OpenVDB: nanovdb/NanoVDB.h Source File

OpenVDB 9.0.0

NanoVDB.h
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1// Copyright Contributors to the OpenVDB Project
2// SPDX-License-Identifier: MPL-2.0
3
4/*!
5 \file NanoVDB.h
6
7 \author Ken Museth
8
9 \date January 8, 2020
10
11 \brief Implements a light-weight self-contained VDB data-structure in a
12 single file! In other words, this is a significantly watered-down
13 version of the OpenVDB implementation, with few dependencies - so
14 a one-stop-shop for a minimalistic VDB data structure that run on
15 most platforms!
16
17 \note It is important to note that NanoVDB (by design) is a read-only
18 sparse GPU (and CPU) friendly data structure intended for applications
19 like rendering and collision detection. As such it obviously lacks
20 a lot of the functionality and features of OpenVDB grids. NanoVDB
21 is essentially a compact linearized (or serialized) representation of
22 an OpenVDB tree with getValue methods only. For best performance use
23 the ReadAccessor::getValue method as opposed to the Tree::getValue
24 method. Note that since a ReadAccessor caches previous access patterns
25 it is by design not thread-safe, so use one instantiation per thread
26 (it is very light-weight). Also, it is not safe to copy accessors between
27 the GPU and CPU! In fact, client code should only interface
28 with the API of the Grid class (all other nodes of the NanoVDB data
29 structure can safely be ignored by most client codes)!
30
31
32 \warning NanoVDB grids can only be constructed via tools like openToNanoVDB
33 or the GridBuilder. This explains why none of the grid nodes defined below
34 have public constructors or destructors.
35
36 \details Please see the following paper for more details on the data structure:
37 K. Museth, “VDB: High-Resolution Sparse Volumes with Dynamic Topology”,
38 ACM Transactions on Graphics 32(3), 2013, which can be found here:
39 http://www.museth.org/Ken/Publications_files/Museth_TOG13.pdf
40
41
42 Overview: This file implements the following fundamental class that when combined
43 forms the backbone of the VDB tree data structure:
44
45 Coord- a signed integer coordinate
46 Vec3 - a 3D vector
47 Vec4 - a 4D vector
48 BBox - a bounding box
49 Mask - a bitmask essential to the non-root tree nodes
50 Map - an affine coordinate transformation
51 Grid - contains a Tree and a map for world<->index transformations. Use
52 this class as the main API with client code!
53 Tree - contains a RootNode and getValue methods that should only be used for debugging
54 RootNode - the top-level node of the VDB data structure
55 InternalNode - the internal nodes of the VDB data structure
56 LeafNode - the lowest level tree nodes that encode voxel values and state
57 ReadAccessor - implements accelerated random access operations
58
59 Semantics: A VDB data structure encodes values and (binary) states associated with
60 signed integer coordinates. Values encoded at the leaf node level are
61 denoted voxel values, and values associated with other tree nodes are referred
62 to as tile values, which by design cover a larger coordinate index domain.
63
64
65 Memory layout:
66
67 GridData is always at the very beginning of the buffer immediately followed by TreeData!
68 The remaining nodes and blind-data are allowed to be scattered thoughout the buffer,
69 though in practice they are arranged as:
70
71 GridData: 672 bytes (e.g. magic, checksum, major, flags, index, count, size, name, map, world bbox, voxel size, class, type, offset, count)
72
73 TreeData: 64 bytes (node counts and byte offsets)
74
75 ... optional padding ...
76
77 RootData: size depends on ValueType (index bbox, voxel count, tile count, min/max/avg/standard deviation)
78
79 Array of: RootData::Tile
80
81 ... optional padding ...
82
83 Array of: Upper InternalNodes of size 32^3: bbox, two bit masks, 32768 tile values, and min/max/avg/standard deviation values
84
85 ... optional padding ...
86
87 Array of: Lower InternalNodes of size 16^3: bbox, two bit masks, 4096 tile values, and min/max/avg/standard deviation values
88
89 ... optional padding ...
90
91 Array of: LeafNodes of size 8^3: bbox, bit masks, 512 voxel values, and min/max/avg/standard deviation values
92
93
94 Example layout: ("---" implies it has a custom offset, "..." implies zero or more)
95 [GridData(672B)][TreeData(64B)]---[RootData][N x Root::Tile]---[NodeData<5>]---[ModeData<4>]---[LeafData<3>]---[BLINDMETA...]---[BLIND0]---[BLIND1]---etc.
96
97*/
98
99#ifndef NANOVDB_NANOVDB_H_HAS_BEEN_INCLUDED
100#define NANOVDB_NANOVDB_H_HAS_BEEN_INCLUDED
101
102#define NANOVDB_MAGIC_NUMBER 0x304244566f6e614eUL // "NanoVDB0" in hex - little endian (uint64_t)
103
104#define NANOVDB_MAJOR_VERSION_NUMBER 32 // reflects changes to the ABI and hence also the file format
105#define NANOVDB_MINOR_VERSION_NUMBER 3 // reflects changes to the API but not ABI
106#define NANOVDB_PATCH_VERSION_NUMBER 3 // reflects changes that does not affect the ABI or API
107
108// This replaces a Coord key at the root level with a single uint64_t
109#define USE_SINGLE_ROOT_KEY
110
111// This replaces three levels of Coord keys in the ReadAccessor with one Coord
112//#define USE_SINGLE_ACCESSOR_KEY
113
114#define NANOVDB_FPN_BRANCHLESS
115
116#define NANOVDB_DATA_ALIGNMENT 32
117
118#if !defined(NANOVDB_ALIGN)
119#define NANOVDB_ALIGN(n) alignas(n)
120#endif // !defined(NANOVDB_ALIGN)
121
122#ifdef __CUDACC_RTC__
123
124typedef signed char int8_t;
125typedef short int16_t;
126typedef int int32_t;
127typedef long long int64_t;
128typedef unsigned char uint8_t;
129typedef unsigned int uint32_t;
130typedef unsigned short uint16_t;
131typedef unsigned long long uint64_t;
132
133#define NANOVDB_ASSERT(x)
134
135#define UINT64_C(x) (x ## ULL)
136
137#else // __CUDACC_RTC__
138
139#include <stdlib.h> // for abs in clang7
140#include <stdint.h> // for types like int32_t etc
141#include <stddef.h> // for size_t type
142#include <cassert> // for assert
143#include <cstdio> // for sprinf
144#include <cmath> // for sqrt and fma
145#include <limits> // for numeric_limits
146
147// All asserts can be disabled here, even for debug builds
148#if 1
149#define NANOVDB_ASSERT(x) assert(x)
150#else
151#define NANOVDB_ASSERT(x)
152#endif
153
154#if defined(NANOVDB_USE_INTRINSICS) && defined(_MSC_VER)
155#include <intrin.h>
156#pragma intrinsic(_BitScanReverse)
157#pragma intrinsic(_BitScanForward)
158#pragma intrinsic(_BitScanReverse64)
159#pragma intrinsic(_BitScanForward64)
160#endif
161
162#endif // __CUDACC_RTC__
163
164#ifdef __CUDACC__
165// Only define __hostdev__ when using NVIDIA CUDA compiler
166#define __hostdev__ __host__ __device__
167#else
168#define __hostdev__
169#endif
170
171// The following macro will suppress annoying warnings when nvcc
172// compiles functions that call (host) intrinsics (which is perfectly valid)
173#if defined(_MSC_VER) && defined(__CUDACC__)
174#define NANOVDB_HOSTDEV_DISABLE_WARNING __pragma("hd_warning_disable")
175#elif defined(__GNUC__) && defined(__CUDACC__)
176#define NANOVDB_HOSTDEV_DISABLE_WARNING _Pragma("hd_warning_disable")
177#else
178#define NANOVDB_HOSTDEV_DISABLE_WARNING
179#endif
180
181// A portable implementation of offsetof - unfortunately it doesn't work with static_assert
182#define NANOVDB_OFFSETOF(CLASS, MEMBER) ((int)(size_t)((char*)&((CLASS*)0)->MEMBER - (char*)0))
183
184 namespace nanovdb {
185
186// --------------------------> Build types <------------------------------------
187
188/// @brief Dummy type for a voxel with a binary mask value, e.g. the active state
189 class ValueMask {};
190
191/// @brief Dummy type for a 16 bit floating point values
192 class Half {};
193
194/// @brief Dummy type for a 4bit quantization of float point values
195 class Fp4 {};
196
197/// @brief Dummy type for a 8bit quantization of float point values
198 class Fp8 {};
199
200/// @brief Dummy type for a 16bit quantization of float point values
201 class Fp16 {};
202
203/// @brief Dummy type for a variable bit quantization of floating point values
204 class FpN {};
205
206// --------------------------> GridType <------------------------------------
207
208/// @brief List of types that are currently supported by NanoVDB
209///
210/// @note To expand on this list do:
211/// 1) Add the new type between Unknown and End in the enum below
212/// 2) Add the new type to OpenToNanoVDB::processGrid that maps OpenVDB types to GridType
213/// 3) Verify that the ConvertTrait in NanoToOpenVDB.h works correctly with the new type
214/// 4) Add the new type to mapToGridType (defined below) that maps NanoVDB types to GridType
215/// 5) Add the new type to toStr (defined below)
216 enum class GridType : uint32_t { Unknown = 0,
217 Float = 1, // single precision floating point value
218 Double = 2,// double precision floating point value
219 Int16 = 3,// half precision signed integer value
220 Int32 = 4,// single precision signed integer value
221 Int64 = 5,// double precision signed integer value
222 Vec3f = 6,// single precision floating 3D vector
223 Vec3d = 7,// double precision floating 3D vector
224 Mask = 8,// no value, just the active state
225 Half = 9,// half precision floating point value
226 UInt32 = 10,// single precision unsigned integer value
227 Boolean = 11,// boolean value, encoded in bit array
228 RGBA8 = 12,// RGBA packed into 32bit word in reverse-order. R in low bits.
229 Fp4 = 13,// 4bit quantization of float point value
230 Fp8 = 14,// 8bit quantization of float point value
231 Fp16 = 15,// 16bit quantization of float point value
232 FpN = 16,// variable bit quantization of floating point value
233 Vec4f = 17,// single precision floating 4D vector
234 Vec4d = 18,// double precision floating 4D vector
235 End = 19 };
236
237#ifndef __CUDACC_RTC__
238/// @brief Retuns a c-string used to describe a GridType
239 inline const char* toStr(GridType gridType)
240{
241 static const char * LUT[] = { "?", "float", "double" , "int16", "int32",
242 "int64", "Vec3f", "Vec3d", "Mask", "Half",
243 "uint32", "bool", "RGBA8", "Float4", "Float8",
244 "Float16", "FloatN", "Vec4f", "Vec4d", "End" };
245 static_assert( sizeof(LUT)/sizeof(char*) - 1 == int(GridType::End), "Unexpected size of LUT" );
246 return LUT[static_cast<int>(gridType)];
247}
248#endif
249
250// --------------------------> GridClass <------------------------------------
251
252/// @brief Classes (defined in OpenVDB) that are currently supported by NanoVDB
253 enum class GridClass : uint32_t { Unknown = 0,
254 LevelSet = 1, // narrow band level set, e.g. SDF
255 FogVolume = 2, // fog volume, e.g. density
256 Staggered = 3, // staggered MAC grid, e.g. velocity
257 PointIndex = 4, // point index grid
258 PointData = 5, // point data grid
259 Topology = 6, // grid with active states only (no values)
260 VoxelVolume = 7, // volume of geometric cubes, e.g. minecraft
261 End = 8 };
262
263#ifndef __CUDACC_RTC__
264/// @brief Retuns a c-string used to describe a GridClass
265 inline const char* toStr(GridClass gridClass)
266{
267 static const char * LUT[] = { "?", "SDF", "FOG" , "MAC", "PNTIDX",
268 "PNTDAT", "TOPO", "VOX", "END" };
269 static_assert( sizeof(LUT)/sizeof(char*) - 1 == int(GridClass::End), "Unexpected size of LUT" );
270 return LUT[static_cast<int>(gridClass)];
271}
272#endif
273
274// --------------------------> GridFlags <------------------------------------
275
276/// @brief Grid flags which indicate what extra information is present in the grid buffer.
277 enum class GridFlags : uint32_t {
278 HasLongGridName = 1 << 0,// grid name is longer than 256 characters
279 HasBBox = 1 << 1,// nodes contain bounding-boxes of active values
280 HasMinMax = 1 << 2,// nodes contain min/max of active values
281 HasAverage = 1 << 3,// nodes contain averages of active values
282 HasStdDeviation = 1 << 4,// nodes contain standard deviations of active values
283 IsBreadthFirst = 1 << 5,// nodes are arranged breadth-first in memory
284 End = 1 << 6,
285};
286
287#ifndef __CUDACC_RTC__
288/// @brief Retuns a c-string used to describe a GridFlags
289 inline const char* toStr(GridFlags gridFlags)
290{
291 static const char * LUT[] = { "has long grid name",
292 "has bbox",
293 "has min/max",
294 "has average",
295 "has standard deviation",
296 "is breadth-first",
297 "end" };
298 static_assert( 1 << (sizeof(LUT)/sizeof(char*) - 1) == int(GridFlags::End), "Unexpected size of LUT" );
299 return LUT[static_cast<int>(gridFlags)];
300}
301#endif
302
303// --------------------------> GridBlindData enums <------------------------------------
304
305/// @brief Blind-data Classes that are currently supported by NanoVDB
306 enum class GridBlindDataClass : uint32_t { Unknown = 0,
307 IndexArray = 1,
308 AttributeArray = 2,
309 GridName = 3,
310 End = 4 };
311
312/// @brief Blind-data Semantics that are currently understood by NanoVDB
313 enum class GridBlindDataSemantic : uint32_t { Unknown = 0,
314 PointPosition = 1,
315 PointColor = 2,
316 PointNormal = 3,
317 PointRadius = 4,
318 PointVelocity = 5,
319 PointId = 6,
320 End = 7 };
321
322// --------------------------> is_same <------------------------------------
323
324/// @brief C++11 implementation of std::is_same
325template<typename T1, typename T2>
326 struct is_same
327{
328 static constexpr bool value = false;
329};
330
331template<typename T>
332 struct is_same<T, T>
333{
334 static constexpr bool value = true;
335};
336
337// --------------------------> enable_if <------------------------------------
338
339/// @brief C++11 implementation of std::enable_if
340template <bool, typename T = void>
341 struct enable_if
342{
343};
344
345template <typename T>
346 struct enable_if<true, T>
347{
348 using type = T;
349};
350
351// --------------------------> is_floating_point <------------------------------------
352
353/// @brief C++11 implementation of std::is_floating_point
354template<typename T>
355 struct is_floating_point
356{
357 static const bool value = is_same<T, float>::value || is_same<T, double>::value;
358};
359
360// --------------------------> is_specialization <------------------------------------
361
362/// @brief Metafunction used to determine if the first template
363/// parameter is a specialization of the class template
364/// given in the second template parameter.
365///
366/// @details is_specialization<Vec3<float>, Vec3>::value == true;
367template<typename AnyType, template<typename...> class TemplateType>
368 struct is_specialization
369{
370 static const bool value = false;
371};
372template<typename... Args, template<typename...> class TemplateType>
373 struct is_specialization<TemplateType<Args...>, TemplateType>
374{
375 static const bool value = true;
376};
377
378// --------------------------> Value Map <------------------------------------
379
380/// @brief Maps one type (e.g. the build types above) to other (actual) types
381template <typename T>
382 struct BuildToValueMap
383{
384 using Type = T;
385 using type = T;
386};
387
388template<>
389 struct BuildToValueMap<ValueMask>
390{
391 using Type = bool;
392 using type = bool;
393};
394
395template<>
396 struct BuildToValueMap<Half>
397{
398 using Type = float;
399 using type = float;
400};
401
402template<>
403 struct BuildToValueMap<Fp4>
404{
405 using Type = float;
406 using type = float;
407};
408
409template<>
410 struct BuildToValueMap<Fp8>
411{
412 using Type = float;
413 using type = float;
414};
415
416template<>
417 struct BuildToValueMap<Fp16>
418{
419 using Type = float;
420 using type = float;
421};
422
423template<>
424 struct BuildToValueMap<FpN>
425{
426 using Type = float;
427 using type = float;
428};
429
430// --------------------------> PtrDiff PtrAdd <------------------------------------
431
432template <typename T1, typename T2>
433 __hostdev__ inline static int64_t PtrDiff(const T1* p, const T2* q)
434{
435 NANOVDB_ASSERT(p && q);
436 return reinterpret_cast<const char*>(p) - reinterpret_cast<const char*>(q);
437}
438
439template <typename DstT, typename SrcT>
440 __hostdev__ inline static DstT* PtrAdd(SrcT *p, int64_t offset)
441{
442 NANOVDB_ASSERT(p);
443 return reinterpret_cast<DstT*>(reinterpret_cast<char*>(p) + offset);
444}
445
446template <typename DstT, typename SrcT>
447 __hostdev__ inline static const DstT* PtrAdd(const SrcT *p, int64_t offset)
448{
449 NANOVDB_ASSERT(p);
450 return reinterpret_cast<const DstT*>(reinterpret_cast<const char*>(p) + offset);
451}
452// --------------------------> Rgba8 <------------------------------------
453
454/// @brief 8-bit red, green, blue, alpha packed into 32 bit unsigned int
455 class Rgba8
456{
457 union {
458 uint8_t c[4];// 4 color channels of red, green, blue and alpha components.
459 uint32_t packed;// 32 bit packed representation
460 } mData;
461public:
462 static const int SIZE = 4;
463 using ValueType = uint8_t;
464
465 Rgba8(const Rgba8&) = default;
466 Rgba8(Rgba8&&) = default;
467 Rgba8& operator=(Rgba8&&) = default;
468 Rgba8& operator=(const Rgba8&) = default;
469 __hostdev__ Rgba8() : mData{0,0,0,0} {static_assert(sizeof(uint32_t) == sizeof(Rgba8),"Unexpected sizeof");}
470 __hostdev__ Rgba8(uint8_t r, uint8_t g, uint8_t b, uint8_t a = 255u) : mData{r, g, b, a} {}
471 explicit __hostdev__ Rgba8(uint8_t v) : Rgba8(v,v,v,v) {}
472 __hostdev__ Rgba8(float r, float g, float b, float a = 1.0f)
473 : mData{(uint8_t(0.5f + r * 255.0f)),// round to nearest
474 (uint8_t(0.5f + g * 255.0f)),// round to nearest
475 (uint8_t(0.5f + b * 255.0f)),// round to nearest
476 (uint8_t(0.5f + a * 255.0f))}// round to nearest
477 {
478 }
479 __hostdev__ bool operator<(const Rgba8& rhs) const { return mData.packed < rhs.mData.packed; }
480 __hostdev__ bool operator==(const Rgba8& rhs) const { return mData.packed == rhs.mData.packed; }
481 __hostdev__ float lengthSqr() const
482 {
483 return 0.0000153787005f*(float(mData.c[0])*mData.c[0] +
484 float(mData.c[1])*mData.c[1] +
485 float(mData.c[2])*mData.c[2]);//1/255^2
486 }
487 __hostdev__ float length() const { return sqrtf(this->lengthSqr() ); }
488 __hostdev__ const uint8_t& operator[](int n) const { return mData.c[n]; }
489 __hostdev__ uint8_t& operator[](int n) { return mData.c[n]; }
490 __hostdev__ const uint32_t& packed() const { return mData.packed; }
491 __hostdev__ uint32_t& packed() { return mData.packed; }
492 __hostdev__ const uint8_t& r() const { return mData.c[0]; }
493 __hostdev__ const uint8_t& g() const { return mData.c[1]; }
494 __hostdev__ const uint8_t& b() const { return mData.c[2]; }
495 __hostdev__ const uint8_t& a() const { return mData.c[3]; }
496 __hostdev__ uint8_t& r() { return mData.c[0]; }
497 __hostdev__ uint8_t& g() { return mData.c[1]; }
498 __hostdev__ uint8_t& b() { return mData.c[2]; }
499 __hostdev__ uint8_t& a() { return mData.c[3]; }
500};// Rgba8
501
502 using PackedRGBA8 = Rgba8;// for backwards compatibility
503
504// --------------------------> isValue(GridType, GridClass) <------------------------------------
505
506/// @brief return true if the GridType maps to a floating point value.
507 __hostdev__ inline bool isFloatingPoint(GridType gridType)
508{
509 return gridType == GridType::Float ||
510 gridType == GridType::Double ||
511 gridType == GridType::Fp4 ||
512 gridType == GridType::Fp8 ||
513 gridType == GridType::Fp16 ||
514 gridType == GridType::FpN;
515}
516
517// --------------------------> isValue(GridType, GridClass) <------------------------------------
518
519/// @brief return true if the combination of GridType and GridClass is valid.
520 __hostdev__ inline bool isValid(GridType gridType, GridClass gridClass)
521{
522 if (gridClass == GridClass::LevelSet || gridClass == GridClass::FogVolume) {
523 return isFloatingPoint(gridType);
524 } else if (gridClass == GridClass::Staggered) {
525 return gridType == GridType::Vec3f || gridType == GridType::Vec3d ||
526 gridType == GridType::Vec4f || gridType == GridType::Vec4d;
527 } else if (gridClass == GridClass::PointIndex || gridClass == GridClass::PointData) {
528 return gridType == GridType::UInt32;
529 } else if (gridClass == GridClass::VoxelVolume) {
530 return gridType == GridType::RGBA8 || gridType == GridType::Float || gridType == GridType::Double || gridType == GridType::Vec3f || gridType == GridType::Vec3d || gridType == GridType::UInt32;
531 }
532 return gridClass < GridClass::End && gridType < GridType::End;// any valid combination
533}
534
535// ----------------------------> Version class <-------------------------------------
536
537/// @brief Bit-compacted representation of all three version numbers
538///
539/// @details major is the top 11 bits, minor is the 11 middle bits and patch is the lower 10 bits
540 class Version
541{
542 uint32_t mData;// 11 + 11 + 10 bit packing of major + minor + patch
543public:
544 __hostdev__ Version() : mData( uint32_t(NANOVDB_MAJOR_VERSION_NUMBER) << 21 |
545 uint32_t(NANOVDB_MINOR_VERSION_NUMBER) << 10 |
546 uint32_t(NANOVDB_PATCH_VERSION_NUMBER) )
547 {
548 }
549 __hostdev__ Version(uint32_t major, uint32_t minor, uint32_t patch)
550 : mData( major << 21 | minor << 10 | patch )
551 {
552 NANOVDB_ASSERT(major < (1u << 11));// max value of major is 2047
553 NANOVDB_ASSERT(minor < (1u << 11));// max value of minor is 2047
554 NANOVDB_ASSERT(patch < (1u << 10));// max value of patch is 1023
555 }
556 __hostdev__ bool operator==(const Version &rhs) const {return mData == rhs.mData;}
557 __hostdev__ bool operator< (const Version &rhs) const {return mData < rhs.mData;}
558 __hostdev__ bool operator<=(const Version &rhs) const {return mData <= rhs.mData;}
559 __hostdev__ bool operator> (const Version &rhs) const {return mData > rhs.mData;}
560 __hostdev__ bool operator>=(const Version &rhs) const {return mData >= rhs.mData;}
561 __hostdev__ uint32_t id() const { return mData; }
562 __hostdev__ uint32_t getMajor() const { return (mData >> 21) & ((1u << 11) - 1);}
563 __hostdev__ uint32_t getMinor() const { return (mData >> 10) & ((1u << 11) - 1);}
564 __hostdev__ uint32_t getPatch() const { return mData & ((1u << 10) - 1);}
565
566#ifndef __CUDACC_RTC__
567 const char* c_str() const
568 {
569 char *buffer = (char*)malloc(4 + 1 + 4 + 1 + 4 + 1);// xxxx.xxxx.xxxx\n
570 sprintf(buffer, "%d.%d.%d", this->getMajor(), this->getMinor(), this->getPatch());
571 return buffer;
572 }
573#endif
574};// Version
575
576// ----------------------------> Various math functions <-------------------------------------
577
578//@{
579/// Tolerance for floating-point comparison
580template<typename T>
581 struct Tolerance;
582template<>
583 struct Tolerance<float>
584{
585 __hostdev__ static float value() { return 1e-8f; }
586};
587template<>
588 struct Tolerance<double>
589{
590 __hostdev__ static double value() { return 1e-15; }
591};
592//@}
593
594//@{
595/// Delta for small floating-point offsets
596template<typename T>
597 struct Delta;
598template<>
599 struct Delta<float>
600{
601 __hostdev__ static float value() { return 1e-5f; }
602};
603template<>
604 struct Delta<double>
605{
606 __hostdev__ static double value() { return 1e-9; }
607};
608//@}
609
610//@{
611/// Maximum floating-point values
612template<typename T>
613struct Maximum;
614#ifdef __CUDA_ARCH__
615template<>
616struct Maximum<int>
617{
618 __hostdev__ static int value() { return 2147483647; }
619};
620template<>
621struct Maximum<uint32_t>
622{
623 __hostdev__ static uint32_t value() { return 4294967295; }
624};
625template<>
626struct Maximum<float>
627{
628 __hostdev__ static float value() { return 1e+38f; }
629};
630template<>
631struct Maximum<double>
632{
633 __hostdev__ static double value() { return 1e+308; }
634};
635#else
636template<typename T>
637 struct Maximum
638{
639 static T value() { return std::numeric_limits<T>::max(); }
640};
641#endif
642//@}
643
644template<typename Type>
645 __hostdev__ inline bool isApproxZero(const Type& x)
646{
647 return !(x > Tolerance<Type>::value()) && !(x < -Tolerance<Type>::value());
648}
649
650template<typename Type>
651 __hostdev__ inline Type Min(Type a, Type b)
652{
653 return (a < b) ? a : b;
654}
655 __hostdev__ inline int32_t Min(int32_t a, int32_t b)
656{
657 return int32_t(fminf(float(a), float(b)));
658}
659 __hostdev__ inline uint32_t Min(uint32_t a, uint32_t b)
660{
661 return uint32_t(fminf(float(a), float(b)));
662}
663 __hostdev__ inline float Min(float a, float b)
664{
665 return fminf(a, b);
666}
667 __hostdev__ inline double Min(double a, double b)
668{
669 return fmin(a, b);
670}
671template<typename Type>
672 __hostdev__ inline Type Max(Type a, Type b)
673{
674 return (a > b) ? a : b;
675}
676
677 __hostdev__ inline int32_t Max(int32_t a, int32_t b)
678{
679 return int32_t(fmaxf(float(a), float(b)));
680}
681 __hostdev__ inline uint32_t Max(uint32_t a, uint32_t b)
682{
683 return uint32_t(fmaxf(float(a), float(b)));
684}
685 __hostdev__ inline float Max(float a, float b)
686{
687 return fmaxf(a, b);
688}
689 __hostdev__ inline double Max(double a, double b)
690{
691 return fmax(a, b);
692}
693 __hostdev__ inline float Clamp(float x, float a, float b)
694{
695 return Max(Min(x, b), a);
696}
697 __hostdev__ inline double Clamp(double x, double a, double b)
698{
699 return Max(Min(x, b), a);
700}
701
702 __hostdev__ inline float Fract(float x)
703{
704 return x - floorf(x);
705}
706 __hostdev__ inline double Fract(double x)
707{
708 return x - floor(x);
709}
710
711 __hostdev__ inline int32_t Floor(float x)
712{
713 return int32_t(floorf(x));
714}
715 __hostdev__ inline int32_t Floor(double x)
716{
717 return int32_t(floor(x));
718}
719
720 __hostdev__ inline int32_t Ceil(float x)
721{
722 return int32_t(ceilf(x));
723}
724 __hostdev__ inline int32_t Ceil(double x)
725{
726 return int32_t(ceil(x));
727}
728
729template<typename T>
730 __hostdev__ inline T Pow2(T x)
731{
732 return x * x;
733}
734
735template<typename T>
736 __hostdev__ inline T Pow3(T x)
737{
738 return x * x * x;
739}
740
741template<typename T>
742 __hostdev__ inline T Pow4(T x)
743{
744 return Pow2(x * x);
745}
746template<typename T>
747 __hostdev__ inline T Abs(T x)
748{
749 return x < 0 ? -x : x;
750}
751
752template<>
753 __hostdev__ inline float Abs(float x)
754{
755 return fabs(x);
756}
757
758template<>
759 __hostdev__ inline double Abs(double x)
760{
761 return fabs(x);
762}
763
764template<>
765 __hostdev__ inline int Abs(int x)
766{
767 return abs(x);
768}
769
770template<typename CoordT, typename RealT, template<typename> class Vec3T>
771 __hostdev__ inline CoordT Round(const Vec3T<RealT>& xyz);
772
773template<typename CoordT, template<typename> class Vec3T>
774 __hostdev__ inline CoordT Round(const Vec3T<float>& xyz)
775{
776 return CoordT(int32_t(rintf(xyz[0])), int32_t(rintf(xyz[1])), int32_t(rintf(xyz[2])));
777 //return CoordT(int32_t(roundf(xyz[0])), int32_t(roundf(xyz[1])), int32_t(roundf(xyz[2])) );
778 //return CoordT(int32_t(floorf(xyz[0] + 0.5f)), int32_t(floorf(xyz[1] + 0.5f)), int32_t(floorf(xyz[2] + 0.5f)));
779}
780
781template<typename CoordT, template<typename> class Vec3T>
782 __hostdev__ inline CoordT Round(const Vec3T<double>& xyz)
783{
784 return CoordT(int32_t(floor(xyz[0] + 0.5)), int32_t(floor(xyz[1] + 0.5)), int32_t(floor(xyz[2] + 0.5)));
785}
786
787template<typename CoordT, typename RealT, template<typename> class Vec3T>
788 __hostdev__ inline CoordT RoundDown(const Vec3T<RealT>& xyz)
789{
790 return CoordT(Floor(xyz[0]), Floor(xyz[1]), Floor(xyz[2]));
791}
792
793//@{
794/// Return the square root of a floating-point value.
795 __hostdev__ inline float Sqrt(float x)
796{
797 return sqrtf(x);
798}
799 __hostdev__ inline double Sqrt(double x)
800{
801 return sqrt(x);
802}
803//@}
804
805/// Return the sign of the given value as an integer (either -1, 0 or 1).
806template <typename T>
807 __hostdev__ inline T Sign(const T &x) { return ((T(0) < x)?T(1):T(0)) - ((x < T(0))?T(1):T(0)); }
808
809template<typename Vec3T>
810 __hostdev__ inline int MinIndex(const Vec3T& v)
811{
812#if 0
813 static const int hashTable[8] = {2, 1, 9, 1, 2, 9, 0, 0}; //9 are dummy values
814 const int hashKey = ((v[0] < v[1]) << 2) + ((v[0] < v[2]) << 1) + (v[1] < v[2]); // ?*4+?*2+?*1
815 return hashTable[hashKey];
816#else
817 if (v[0] < v[1] && v[0] < v[2])
818 return 0;
819 if (v[1] < v[2])
820 return 1;
821 else
822 return 2;
823#endif
824}
825
826template<typename Vec3T>
827 __hostdev__ inline int MaxIndex(const Vec3T& v)
828{
829#if 0
830 static const int hashTable[8] = {2, 1, 9, 1, 2, 9, 0, 0}; //9 are dummy values
831 const int hashKey = ((v[0] > v[1]) << 2) + ((v[0] > v[2]) << 1) + (v[1] > v[2]); // ?*4+?*2+?*1
832 return hashTable[hashKey];
833#else
834 if (v[0] > v[1] && v[0] > v[2])
835 return 0;
836 if (v[1] > v[2])
837 return 1;
838 else
839 return 2;
840#endif
841}
842
843/// @brief round up byteSize to the nearest wordSize, e.g. to align to machine word: AlignUp<sizeof(size_t)(n)
844///
845/// @details both wordSize and byteSize are in byte units
846template<uint64_t wordSize>
847 __hostdev__ inline uint64_t AlignUp(uint64_t byteCount)
848{
849 const uint64_t r = byteCount % wordSize;
850 return r ? byteCount - r + wordSize : byteCount;
851}
852
853// ------------------------------> Coord <--------------------------------------
854
855// forward decleration so we can define Coord::asVec3s and Coord::asVec3d
856template<typename> class Vec3;
857
858/// @brief Signed (i, j, k) 32-bit integer coordinate class, similar to openvdb::math::Coord
859 class Coord
860{
861 int32_t mVec[3]; // private member data - three signed index coordinates
862public:
863 using ValueType = int32_t;
864 using IndexType = uint32_t;
865
866 /// @brief Initialize all coordinates to zero.
867 __hostdev__ Coord()
868 : mVec{0, 0, 0}
869 {
870 }
871
872 /// @brief Initializes all coordinates to the given signed integer.
873 __hostdev__ explicit Coord(ValueType n)
874 : mVec{n, n, n}
875 {
876 }
877
878 /// @brief Initializes coordinate to the given signed integers.
879 __hostdev__ Coord(ValueType i, ValueType j, ValueType k)
880 : mVec{i, j, k}
881 {
882 }
883
884 __hostdev__ Coord(ValueType *ptr)
885 : mVec{ptr[0], ptr[1], ptr[2]}
886 {
887 }
888
889 __hostdev__ int32_t x() const { return mVec[0]; }
890 __hostdev__ int32_t y() const { return mVec[1]; }
891 __hostdev__ int32_t z() const { return mVec[2]; }
892
893 __hostdev__ int32_t& x() { return mVec[0]; }
894 __hostdev__ int32_t& y() { return mVec[1]; }
895 __hostdev__ int32_t& z() { return mVec[2]; }
896
897 __hostdev__ static Coord max() { return Coord(int32_t((1u << 31) - 1)); }
898
899 __hostdev__ static Coord min() { return Coord(-int32_t((1u << 31) - 1) - 1); }
900
901 __hostdev__ static size_t memUsage() { return sizeof(Coord); }
902
903 /// @brief Return a const reference to the given Coord component.
904 /// @warning The argument is assumed to be 0, 1, or 2.
905 __hostdev__ const ValueType& operator[](IndexType i) const { return mVec[i]; }
906
907 /// @brief Return a non-const reference to the given Coord component.
908 /// @warning The argument is assumed to be 0, 1, or 2.
909 __hostdev__ ValueType& operator[](IndexType i) { return mVec[i]; }
910
911 /// @brief Assignment operator that works with openvdb::Coord
912 template <typename CoordT>
913 __hostdev__ Coord& operator=(const CoordT &other)
914 {
915 static_assert(sizeof(Coord) == sizeof(CoordT), "Mis-matched sizeof");
916 mVec[0] = other[0];
917 mVec[1] = other[1];
918 mVec[2] = other[2];
919 return *this;
920 }
921
922 /// @brief Return a new instance with coordinates masked by the given unsigned integer.
923 __hostdev__ Coord operator&(IndexType n) const { return Coord(mVec[0] & n, mVec[1] & n, mVec[2] & n); }
924
925 // @brief Return a new instance with coordinates left-shifted by the given unsigned integer.
926 __hostdev__ Coord operator<<(IndexType n) const { return Coord(mVec[0] << n, mVec[1] << n, mVec[2] << n); }
927
928 // @brief Return a new instance with coordinates right-shifted by the given unsigned integer.
929 __hostdev__ Coord operator>>(IndexType n) const { return Coord(mVec[0] >> n, mVec[1] >> n, mVec[2] >> n); }
930
931 /// @brief Return true if this Coord is lexicographically less than the given Coord.
932 __hostdev__ bool operator<(const Coord& rhs) const
933 {
934 return mVec[0] < rhs[0] ? true : mVec[0] > rhs[0] ? false : mVec[1] < rhs[1] ? true : mVec[1] > rhs[1] ? false : mVec[2] < rhs[2] ? true : false;
935 }
936
937 // @brief Return true if the Coord components are identical.
938 __hostdev__ bool operator==(const Coord& rhs) const { return mVec[0] == rhs[0] && mVec[1] == rhs[1] && mVec[2] == rhs[2]; }
939 __hostdev__ bool operator!=(const Coord& rhs) const { return mVec[0] != rhs[0] || mVec[1] != rhs[1] || mVec[2] != rhs[2]; }
940 __hostdev__ Coord& operator&=(int n)
941 {
942 mVec[0] &= n;
943 mVec[1] &= n;
944 mVec[2] &= n;
945 return *this;
946 }
947 __hostdev__ Coord& operator<<=(uint32_t n)
948 {
949 mVec[0] <<= n;
950 mVec[1] <<= n;
951 mVec[2] <<= n;
952 return *this;
953 }
954 __hostdev__ Coord& operator+=(int n)
955 {
956 mVec[0] += n;
957 mVec[1] += n;
958 mVec[2] += n;
959 return *this;
960 }
961 __hostdev__ Coord operator+(const Coord& rhs) const { return Coord(mVec[0] + rhs[0], mVec[1] + rhs[1], mVec[2] + rhs[2]); }
962 __hostdev__ Coord operator-(const Coord& rhs) const { return Coord(mVec[0] - rhs[0], mVec[1] - rhs[1], mVec[2] - rhs[2]); }
963 __hostdev__ Coord& operator+=(const Coord& rhs)
964 {
965 mVec[0] += rhs[0];
966 mVec[1] += rhs[1];
967 mVec[2] += rhs[2];
968 return *this;
969 }
970 __hostdev__ Coord& operator-=(const Coord& rhs)
971 {
972 mVec[0] -= rhs[0];
973 mVec[1] -= rhs[1];
974 mVec[2] -= rhs[2];
975 return *this;
976 }
977
978 /// @brief Perform a component-wise minimum with the other Coord.
979 __hostdev__ Coord& minComponent(const Coord& other)
980 {
981 if (other[0] < mVec[0])
982 mVec[0] = other[0];
983 if (other[1] < mVec[1])
984 mVec[1] = other[1];
985 if (other[2] < mVec[2])
986 mVec[2] = other[2];
987 return *this;
988 }
989
990 /// @brief Perform a component-wise maximum with the other Coord.
991 __hostdev__ Coord& maxComponent(const Coord& other)
992 {
993 if (other[0] > mVec[0])
994 mVec[0] = other[0];
995 if (other[1] > mVec[1])
996 mVec[1] = other[1];
997 if (other[2] > mVec[2])
998 mVec[2] = other[2];
999 return *this;
1000 }
1001
1002 __hostdev__ Coord offsetBy(ValueType dx, ValueType dy, ValueType dz) const
1003 {
1004 return Coord(mVec[0] + dx, mVec[1] + dy, mVec[2] + dz);
1005 }
1006
1007 __hostdev__ Coord offsetBy(ValueType n) const { return this->offsetBy(n, n, n); }
1008
1009 /// Return true if any of the components of @a a are smaller than the
1010 /// corresponding components of @a b.
1011 __hostdev__ static inline bool lessThan(const Coord& a, const Coord& b)
1012 {
1013 return (a[0] < b[0] || a[1] < b[1] || a[2] < b[2]);
1014 }
1015
1016 /// @brief Return the largest integer coordinates that are not greater
1017 /// than @a xyz (node centered conversion).
1018 template<typename Vec3T>
1019 __hostdev__ static Coord Floor(const Vec3T& xyz) { return Coord(nanovdb::Floor(xyz[0]), nanovdb::Floor(xyz[1]), nanovdb::Floor(xyz[2])); }
1020
1021 /// @brief Return a hash key derived from the existing coordinates.
1022 /// @details For details on this hash function please see the VDB paper.
1023 template<int Log2N = 3 + 4 + 5>
1024 __hostdev__ uint32_t hash() const { return ((1 << Log2N) - 1) & (mVec[0] * 73856093 ^ mVec[1] * 19349663 ^ mVec[2] * 83492791); }
1025
1026 /// @brief Return the octant of this Coord
1027 //__hostdev__ size_t octant() const { return (uint32_t(mVec[0])>>31) | ((uint32_t(mVec[1])>>31)<<1) | ((uint32_t(mVec[2])>>31)<<2); }
1028 __hostdev__ uint8_t octant() const { return (uint8_t(bool(mVec[0] & (1u << 31)))) |
1029 (uint8_t(bool(mVec[1] & (1u << 31))) << 1) |
1030 (uint8_t(bool(mVec[2] & (1u << 31))) << 2); }
1031
1032 /// @brief Return a single precision floating-point vector of this coordinate
1033 __hostdev__ inline Vec3<float> asVec3s() const;
1034
1035 /// @brief Return a double precision floating-point vector of this coordinate
1036 __hostdev__ inline Vec3<double> asVec3d() const;
1037}; // Coord class
1038
1039// ----------------------------> Vec3 <--------------------------------------
1040
1041/// @brief A simple vector class with three double components, similar to openvdb::math::Vec3
1042template<typename T>
1043 class Vec3
1044{
1045 T mVec[3];
1046
1047public:
1048 static const int SIZE = 3;
1049 using ValueType = T;
1050 Vec3() = default;
1051 __hostdev__ explicit Vec3(T x)
1052 : mVec{x, x, x}
1053 {
1054 }
1055 __hostdev__ Vec3(T x, T y, T z)
1056 : mVec{x, y, z}
1057 {
1058 }
1059 template<typename T2>
1060 __hostdev__ explicit Vec3(const Vec3<T2>& v)
1061 : mVec{T(v[0]), T(v[1]), T(v[2])}
1062 {
1063 }
1064 __hostdev__ explicit Vec3(const Coord& ijk)
1065 : mVec{T(ijk[0]), T(ijk[1]), T(ijk[2])}
1066 {
1067 }
1068 __hostdev__ bool operator==(const Vec3& rhs) const { return mVec[0] == rhs[0] && mVec[1] == rhs[1] && mVec[2] == rhs[2]; }
1069 __hostdev__ bool operator!=(const Vec3& rhs) const { return mVec[0] != rhs[0] || mVec[1] != rhs[1] || mVec[2] != rhs[2]; }
1070 template<typename Vec3T>
1071 __hostdev__ Vec3& operator=(const Vec3T& rhs)
1072 {
1073 mVec[0] = rhs[0];
1074 mVec[1] = rhs[1];
1075 mVec[2] = rhs[2];
1076 return *this;
1077 }
1078 __hostdev__ const T& operator[](int i) const { return mVec[i]; }
1079 __hostdev__ T& operator[](int i) { return mVec[i]; }
1080 template<typename Vec3T>
1081 __hostdev__ T dot(const Vec3T& v) const { return mVec[0] * v[0] + mVec[1] * v[1] + mVec[2] * v[2]; }
1082 template<typename Vec3T>
1083 __hostdev__ Vec3 cross(const Vec3T& v) const
1084 {
1085 return Vec3(mVec[1] * v[2] - mVec[2] * v[1],
1086 mVec[2] * v[0] - mVec[0] * v[2],
1087 mVec[0] * v[1] - mVec[1] * v[0]);
1088 }
1089 __hostdev__ T lengthSqr() const
1090 {
1091 return mVec[0] * mVec[0] + mVec[1] * mVec[1] + mVec[2] * mVec[2]; // 5 flops
1092 }
1093 __hostdev__ T length() const { return Sqrt(this->lengthSqr()); }
1094 __hostdev__ Vec3 operator-() const { return Vec3(-mVec[0], -mVec[1], -mVec[2]); }
1095 __hostdev__ Vec3 operator*(const Vec3& v) const { return Vec3(mVec[0] * v[0], mVec[1] * v[1], mVec[2] * v[2]); }
1096 __hostdev__ Vec3 operator/(const Vec3& v) const { return Vec3(mVec[0] / v[0], mVec[1] / v[1], mVec[2] / v[2]); }
1097 __hostdev__ Vec3 operator+(const Vec3& v) const { return Vec3(mVec[0] + v[0], mVec[1] + v[1], mVec[2] + v[2]); }
1098 __hostdev__ Vec3 operator-(const Vec3& v) const { return Vec3(mVec[0] - v[0], mVec[1] - v[1], mVec[2] - v[2]); }
1099 __hostdev__ Vec3 operator*(const T& s) const { return Vec3(s * mVec[0], s * mVec[1], s * mVec[2]); }
1100 __hostdev__ Vec3 operator/(const T& s) const { return (T(1) / s) * (*this); }
1101 __hostdev__ Vec3& operator+=(const Vec3& v)
1102 {
1103 mVec[0] += v[0];
1104 mVec[1] += v[1];
1105 mVec[2] += v[2];
1106 return *this;
1107 }
1108 __hostdev__ Vec3& operator-=(const Vec3& v)
1109 {
1110 mVec[0] -= v[0];
1111 mVec[1] -= v[1];
1112 mVec[2] -= v[2];
1113 return *this;
1114 }
1115 __hostdev__ Vec3& operator*=(const T& s)
1116 {
1117 mVec[0] *= s;
1118 mVec[1] *= s;
1119 mVec[2] *= s;
1120 return *this;
1121 }
1122 __hostdev__ Vec3& operator/=(const T& s) { return (*this) *= T(1) / s; }
1123 __hostdev__ Vec3& normalize() { return (*this) /= this->length(); }
1124 /// @brief Perform a component-wise minimum with the other Coord.
1125 __hostdev__ Vec3& minComponent(const Vec3& other)
1126 {
1127 if (other[0] < mVec[0])
1128 mVec[0] = other[0];
1129 if (other[1] < mVec[1])
1130 mVec[1] = other[1];
1131 if (other[2] < mVec[2])
1132 mVec[2] = other[2];
1133 return *this;
1134 }
1135
1136 /// @brief Perform a component-wise maximum with the other Coord.
1137 __hostdev__ Vec3& maxComponent(const Vec3& other)
1138 {
1139 if (other[0] > mVec[0])
1140 mVec[0] = other[0];
1141 if (other[1] > mVec[1])
1142 mVec[1] = other[1];
1143 if (other[2] > mVec[2])
1144 mVec[2] = other[2];
1145 return *this;
1146 }
1147 /// @brief Return the smallest vector component
1148 __hostdev__ ValueType min() const
1149 {
1150 return mVec[0] < mVec[1] ? (mVec[0] < mVec[2] ? mVec[0] : mVec[2]) : (mVec[1] < mVec[2] ? mVec[1] : mVec[2]);
1151 }
1152 /// @brief Return the largest vector component
1153 __hostdev__ ValueType max() const
1154 {
1155 return mVec[0] > mVec[1] ? (mVec[0] > mVec[2] ? mVec[0] : mVec[2]) : (mVec[1] > mVec[2] ? mVec[1] : mVec[2]);
1156 }
1157 __hostdev__ Coord floor() const { return Coord(Floor(mVec[0]), Floor(mVec[1]), Floor(mVec[2])); }
1158 __hostdev__ Coord ceil() const { return Coord(Ceil(mVec[0]), Ceil(mVec[1]), Ceil(mVec[2])); }
1159 __hostdev__ Coord round() const { return Coord(Floor(mVec[0] + 0.5), Floor(mVec[1] + 0.5), Floor(mVec[2] + 0.5)); }
1160}; // Vec3<T>
1161
1162template<typename T1, typename T2>
1163 __hostdev__ inline Vec3<T2> operator*(T1 scalar, const Vec3<T2>& vec)
1164{
1165 return Vec3<T2>(scalar * vec[0], scalar * vec[1], scalar * vec[2]);
1166}
1167template<typename T1, typename T2>
1168 __hostdev__ inline Vec3<T2> operator/(T1 scalar, const Vec3<T2>& vec)
1169{
1170 return Vec3<T2>(scalar / vec[0], scalar / vec[1], scalar / vec[2]);
1171}
1172
1173 using Vec3R = Vec3<double>;
1174 using Vec3d = Vec3<double>;
1175 using Vec3f = Vec3<float>;
1176 using Vec3i = Vec3<int>;
1177
1178/// @brief Return a single precision floating-point vector of this coordinate
1179 Vec3f Coord::asVec3s() const { return Vec3f(float(mVec[0]), float(mVec[1]), float(mVec[2])); }
1180
1181/// @brief Return a double precision floating-point vector of this coordinate
1182 Vec3d Coord::asVec3d() const { return Vec3d(double(mVec[0]), double(mVec[1]), double(mVec[2])); }
1183
1184// ----------------------------> Vec4 <--------------------------------------
1185
1186/// @brief A simple vector class with three double components, similar to openvdb::math::Vec4
1187template<typename T>
1188 class Vec4
1189{
1190 T mVec[4];
1191
1192public:
1193 static const int SIZE = 4;
1194 using ValueType = T;
1195 Vec4() = default;
1196 __hostdev__ explicit Vec4(T x)
1197 : mVec{x, x, x, x}
1198 {
1199 }
1200 __hostdev__ Vec4(T x, T y, T z, T w)
1201 : mVec{x, y, z, w}
1202 {
1203 }
1204 template<typename T2>
1205 __hostdev__ explicit Vec4(const Vec4<T2>& v)
1206 : mVec{T(v[0]), T(v[1]), T(v[2]), T(v[3])}
1207 {
1208 }
1209 __hostdev__ bool operator==(const Vec4& rhs) const { return mVec[0] == rhs[0] && mVec[1] == rhs[1] && mVec[2] == rhs[2] && mVec[3] == rhs[3]; }
1210 __hostdev__ bool operator!=(const Vec4& rhs) const { return mVec[0] != rhs[0] || mVec[1] != rhs[1] || mVec[2] != rhs[2] || mVec[3] != rhs[3]; }
1211 template<typename Vec4T>
1212 __hostdev__ Vec4& operator=(const Vec4T& rhs)
1213 {
1214 mVec[0] = rhs[0];
1215 mVec[1] = rhs[1];
1216 mVec[2] = rhs[2];
1217 mVec[3] = rhs[3];
1218 return *this;
1219 }
1220 __hostdev__ const T& operator[](int i) const { return mVec[i]; }
1221 __hostdev__ T& operator[](int i) { return mVec[i]; }
1222 template<typename Vec4T>
1223 __hostdev__ T dot(const Vec4T& v) const { return mVec[0] * v[0] + mVec[1] * v[1] + mVec[2] * v[2] + mVec[3] * v[3]; }
1224 __hostdev__ T lengthSqr() const
1225 {
1226 return mVec[0] * mVec[0] + mVec[1] * mVec[1] + mVec[2] * mVec[2] + mVec[3] * mVec[3]; // 7 flops
1227 }
1228 __hostdev__ T length() const { return Sqrt(this->lengthSqr()); }
1229 __hostdev__ Vec4 operator-() const { return Vec4(-mVec[0], -mVec[1], -mVec[2], -mVec[3]); }
1230 __hostdev__ Vec4 operator*(const Vec4& v) const { return Vec4(mVec[0] * v[0], mVec[1] * v[1], mVec[2] * v[2], mVec[3] * v[3]); }
1231 __hostdev__ Vec4 operator/(const Vec4& v) const { return Vec4(mVec[0] / v[0], mVec[1] / v[1], mVec[2] / v[2], mVec[3] / v[3]); }
1232 __hostdev__ Vec4 operator+(const Vec4& v) const { return Vec4(mVec[0] + v[0], mVec[1] + v[1], mVec[2] + v[2], mVec[3] + v[3]); }
1233 __hostdev__ Vec4 operator-(const Vec4& v) const { return Vec4(mVec[0] - v[0], mVec[1] - v[1], mVec[2] - v[2], mVec[3] - v[3]); }
1234 __hostdev__ Vec4 operator*(const T& s) const { return Vec4(s * mVec[0], s * mVec[1], s * mVec[2], s * mVec[3]); }
1235 __hostdev__ Vec4 operator/(const T& s) const { return (T(1) / s) * (*this); }
1236 __hostdev__ Vec4& operator+=(const Vec4& v)
1237 {
1238 mVec[0] += v[0];
1239 mVec[1] += v[1];
1240 mVec[2] += v[2];
1241 mVec[3] += v[3];
1242 return *this;
1243 }
1244 __hostdev__ Vec4& operator-=(const Vec4& v)
1245 {
1246 mVec[0] -= v[0];
1247 mVec[1] -= v[1];
1248 mVec[2] -= v[2];
1249 mVec[3] -= v[3];
1250 return *this;
1251 }
1252 __hostdev__ Vec4& operator*=(const T& s)
1253 {
1254 mVec[0] *= s;
1255 mVec[1] *= s;
1256 mVec[2] *= s;
1257 mVec[3] *= s;
1258 return *this;
1259 }
1260 __hostdev__ Vec4& operator/=(const T& s) { return (*this) *= T(1) / s; }
1261 __hostdev__ Vec4& normalize() { return (*this) /= this->length(); }
1262 /// @brief Perform a component-wise minimum with the other Coord.
1263 __hostdev__ Vec4& minComponent(const Vec4& other)
1264 {
1265 if (other[0] < mVec[0])
1266 mVec[0] = other[0];
1267 if (other[1] < mVec[1])
1268 mVec[1] = other[1];
1269 if (other[2] < mVec[2])
1270 mVec[2] = other[2];
1271 if (other[3] < mVec[3])
1272 mVec[3] = other[3];
1273 return *this;
1274 }
1275
1276 /// @brief Perform a component-wise maximum with the other Coord.
1277 __hostdev__ Vec4& maxComponent(const Vec4& other)
1278 {
1279 if (other[0] > mVec[0])
1280 mVec[0] = other[0];
1281 if (other[1] > mVec[1])
1282 mVec[1] = other[1];
1283 if (other[2] > mVec[2])
1284 mVec[2] = other[2];
1285 if (other[3] > mVec[3])
1286 mVec[3] = other[3];
1287 return *this;
1288 }
1289}; // Vec4<T>
1290
1291template<typename T1, typename T2>
1292 __hostdev__ inline Vec4<T2> operator*(T1 scalar, const Vec4<T2>& vec)
1293{
1294 return Vec4<T2>(scalar * vec[0], scalar * vec[1], scalar * vec[2], scalar * vec[3]);
1295}
1296template<typename T1, typename T2>
1297 __hostdev__ inline Vec4<T2> operator/(T1 scalar, const Vec3<T2>& vec)
1298{
1299 return Vec4<T2>(scalar / vec[0], scalar / vec[1], scalar / vec[2], scalar / vec[3]);
1300}
1301
1302 using Vec4R = Vec4<double>;
1303 using Vec4d = Vec4<double>;
1304 using Vec4f = Vec4<float>;
1305 using Vec4i = Vec4<int>;
1306
1307// ----------------------------> TensorTraits <--------------------------------------
1308
1309template<typename T, int Rank = (is_specialization<T, Vec3>::value ||
1310 is_specialization<T, Vec4>::value ||
1311 is_same<T, Rgba8>::value) ? 1 : 0>
1312 struct TensorTraits;
1313
1314template<typename T>
1315 struct TensorTraits<T, 0>
1316{
1317 static const int Rank = 0; // i.e. scalar
1318 static const bool IsScalar = true;
1319 static const bool IsVector = false;
1320 static const int Size = 1;
1321 using ElementType = T;
1322 static T scalar(const T& s) { return s; }
1323};
1324
1325template<typename T>
1326 struct TensorTraits<T, 1>
1327{
1328 static const int Rank = 1; // i.e. vector
1329 static const bool IsScalar = false;
1330 static const bool IsVector = true;
1331 static const int Size = T::SIZE;
1332 using ElementType = typename T::ValueType;
1333 static ElementType scalar(const T& v) { return v.length(); }
1334};
1335
1336// ----------------------------> FloatTraits <--------------------------------------
1337
1338template<typename T, int = sizeof(typename TensorTraits<T>::ElementType)>
1339 struct FloatTraits
1340{
1341 using FloatType = float;
1342};
1343
1344template<typename T>
1345 struct FloatTraits<T, 8>
1346{
1347 using FloatType = double;
1348};
1349
1350template<>
1351 struct FloatTraits<bool, 1>
1352{
1353 using FloatType = bool;
1354};
1355
1356template<>
1357 struct FloatTraits<ValueMask, 1>
1358{
1359 using FloatType = bool;
1360};
1361
1362// ----------------------------> mapping ValueType -> GridType <--------------------------------------
1363
1364/// @brief Maps from a templated value type to a GridType enum
1365template<typename BuildT>
1366 __hostdev__ inline GridType mapToGridType()
1367{
1368 if (is_same<BuildT, float>::value) { // resolved at compile-time
1369 return GridType::Float;
1370 } else if (is_same<BuildT, double>::value) {
1371 return GridType::Double;
1372 } else if (is_same<BuildT, int16_t>::value) {
1373 return GridType::Int16;
1374 } else if (is_same<BuildT, int32_t>::value) {
1375 return GridType::Int32;
1376 } else if (is_same<BuildT, int64_t>::value) {
1377 return GridType::Int64;
1378 } else if (is_same<BuildT, Vec3f>::value) {
1379 return GridType::Vec3f;
1380 } else if (is_same<BuildT, Vec3d>::value) {
1381 return GridType::Vec3d;
1382 } else if (is_same<BuildT, uint32_t>::value) {
1383 return GridType::UInt32;
1384 } else if (is_same<BuildT, ValueMask>::value) {
1385 return GridType::Mask;
1386 } else if (is_same<BuildT, bool>::value) {
1387 return GridType::Boolean;
1388 } else if (is_same<BuildT, Rgba8>::value) {
1389 return GridType::RGBA8;
1390 } else if (is_same<BuildT, Fp4>::value) {
1391 return GridType::Fp4;
1392 } else if (is_same<BuildT, Fp8>::value) {
1393 return GridType::Fp8;
1394 } else if (is_same<BuildT, Fp16>::value) {
1395 return GridType::Fp16;
1396 } else if (is_same<BuildT, FpN>::value) {
1397 return GridType::FpN;
1398 } else if (is_same<BuildT, Vec4f>::value) {
1399 return GridType::Vec4f;
1400 } else if (is_same<BuildT, Vec4d>::value) {
1401 return GridType::Vec4d;
1402 }
1403 return GridType::Unknown;
1404}
1405
1406// ----------------------------> matMult <--------------------------------------
1407
1408template<typename Vec3T>
1409 __hostdev__ inline Vec3T matMult(const float* mat, const Vec3T& xyz)
1410{
1411 return Vec3T(fmaf(xyz[0], mat[0], fmaf(xyz[1], mat[1], xyz[2] * mat[2])),
1412 fmaf(xyz[0], mat[3], fmaf(xyz[1], mat[4], xyz[2] * mat[5])),
1413 fmaf(xyz[0], mat[6], fmaf(xyz[1], mat[7], xyz[2] * mat[8]))); // 6 fmaf + 3 mult = 9 flops
1414}
1415
1416template<typename Vec3T>
1417 __hostdev__ inline Vec3T matMult(const double* mat, const Vec3T& xyz)
1418{
1419 return Vec3T(fma(static_cast<double>(xyz[0]), mat[0], fma(static_cast<double>(xyz[1]), mat[1], static_cast<double>(xyz[2]) * mat[2])),
1420 fma(static_cast<double>(xyz[0]), mat[3], fma(static_cast<double>(xyz[1]), mat[4], static_cast<double>(xyz[2]) * mat[5])),
1421 fma(static_cast<double>(xyz[0]), mat[6], fma(static_cast<double>(xyz[1]), mat[7], static_cast<double>(xyz[2]) * mat[8]))); // 6 fmaf + 3 mult = 9 flops
1422}
1423
1424template<typename Vec3T>
1425 __hostdev__ inline Vec3T matMult(const float* mat, const float* vec, const Vec3T& xyz)
1426{
1427 return Vec3T(fmaf(xyz[0], mat[0], fmaf(xyz[1], mat[1], fmaf(xyz[2], mat[2], vec[0]))),
1428 fmaf(xyz[0], mat[3], fmaf(xyz[1], mat[4], fmaf(xyz[2], mat[5], vec[1]))),
1429 fmaf(xyz[0], mat[6], fmaf(xyz[1], mat[7], fmaf(xyz[2], mat[8], vec[2])))); // 9 fmaf = 9 flops
1430}
1431
1432template<typename Vec3T>
1433 __hostdev__ inline Vec3T matMult(const double* mat, const double* vec, const Vec3T& xyz)
1434{
1435 return Vec3T(fma(static_cast<double>(xyz[0]), mat[0], fma(static_cast<double>(xyz[1]), mat[1], fma(static_cast<double>(xyz[2]), mat[2], vec[0]))),
1436 fma(static_cast<double>(xyz[0]), mat[3], fma(static_cast<double>(xyz[1]), mat[4], fma(static_cast<double>(xyz[2]), mat[5], vec[1]))),
1437 fma(static_cast<double>(xyz[0]), mat[6], fma(static_cast<double>(xyz[1]), mat[7], fma(static_cast<double>(xyz[2]), mat[8], vec[2])))); // 9 fma = 9 flops
1438}
1439
1440// matMultT: Multiply with the transpose:
1441
1442template<typename Vec3T>
1443 __hostdev__ inline Vec3T matMultT(const float* mat, const Vec3T& xyz)
1444{
1445 return Vec3T(fmaf(xyz[0], mat[0], fmaf(xyz[1], mat[3], xyz[2] * mat[6])),
1446 fmaf(xyz[0], mat[1], fmaf(xyz[1], mat[4], xyz[2] * mat[7])),
1447 fmaf(xyz[0], mat[2], fmaf(xyz[1], mat[5], xyz[2] * mat[8]))); // 6 fmaf + 3 mult = 9 flops
1448}
1449
1450template<typename Vec3T>
1451 __hostdev__ inline Vec3T matMultT(const double* mat, const Vec3T& xyz)
1452{
1453 return Vec3T(fma(static_cast<double>(xyz[0]), mat[0], fma(static_cast<double>(xyz[1]), mat[3], static_cast<double>(xyz[2]) * mat[6])),
1454 fma(static_cast<double>(xyz[0]), mat[1], fma(static_cast<double>(xyz[1]), mat[4], static_cast<double>(xyz[2]) * mat[7])),
1455 fma(static_cast<double>(xyz[0]), mat[2], fma(static_cast<double>(xyz[1]), mat[5], static_cast<double>(xyz[2]) * mat[8]))); // 6 fmaf + 3 mult = 9 flops
1456}
1457
1458template<typename Vec3T>
1459 __hostdev__ inline Vec3T matMultT(const float* mat, const float* vec, const Vec3T& xyz)
1460{
1461 return Vec3T(fmaf(xyz[0], mat[0], fmaf(xyz[1], mat[3], fmaf(xyz[2], mat[6], vec[0]))),
1462 fmaf(xyz[0], mat[1], fmaf(xyz[1], mat[4], fmaf(xyz[2], mat[7], vec[1]))),
1463 fmaf(xyz[0], mat[2], fmaf(xyz[1], mat[5], fmaf(xyz[2], mat[8], vec[2])))); // 9 fmaf = 9 flops
1464}
1465
1466template<typename Vec3T>
1467 __hostdev__ inline Vec3T matMultT(const double* mat, const double* vec, const Vec3T& xyz)
1468{
1469 return Vec3T(fma(static_cast<double>(xyz[0]), mat[0], fma(static_cast<double>(xyz[1]), mat[3], fma(static_cast<double>(xyz[2]), mat[6], vec[0]))),
1470 fma(static_cast<double>(xyz[0]), mat[1], fma(static_cast<double>(xyz[1]), mat[4], fma(static_cast<double>(xyz[2]), mat[7], vec[1]))),
1471 fma(static_cast<double>(xyz[0]), mat[2], fma(static_cast<double>(xyz[1]), mat[5], fma(static_cast<double>(xyz[2]), mat[8], vec[2])))); // 9 fma = 9 flops
1472}
1473
1474// ----------------------------> BBox <-------------------------------------
1475
1476// Base-class for static polymorphism (cannot be constructed directly)
1477template<typename Vec3T>
1478 struct BaseBBox
1479{
1480 Vec3T mCoord[2];
1481 __hostdev__ bool operator==(const BaseBBox& rhs) const { return mCoord[0] == rhs.mCoord[0] && mCoord[1] == rhs.mCoord[1]; };
1482 __hostdev__ bool operator!=(const BaseBBox& rhs) const { return mCoord[0] != rhs.mCoord[0] || mCoord[1] != rhs.mCoord[1]; };
1483 __hostdev__ const Vec3T& operator[](int i) const { return mCoord[i]; }
1484 __hostdev__ Vec3T& operator[](int i) { return mCoord[i]; }
1485 __hostdev__ Vec3T& min() { return mCoord[0]; }
1486 __hostdev__ Vec3T& max() { return mCoord[1]; }
1487 __hostdev__ const Vec3T& min() const { return mCoord[0]; }
1488 __hostdev__ const Vec3T& max() const { return mCoord[1]; }
1489 __hostdev__ Coord& translate(const Vec3T& xyz)
1490 {
1491 mCoord[0] += xyz;
1492 mCoord[1] += xyz;
1493 return *this;
1494 }
1495 // @brief Expand this bounding box to enclose point (i, j, k).
1496 __hostdev__ BaseBBox& expand(const Vec3T& xyz)
1497 {
1498 mCoord[0].minComponent(xyz);
1499 mCoord[1].maxComponent(xyz);
1500 return *this;
1501 }
1502 //__hostdev__ BaseBBox expandBy(typename Vec3T::ValueType padding) const
1503 //{
1504 // return BaseBBox(mCoord[0].offsetBy(-padding),mCoord[1].offsetBy(padding));
1505 //}
1506 __hostdev__ bool isInside(const Vec3T& xyz)
1507 {
1508 if (xyz[0] < mCoord[0][0] || xyz[1] < mCoord[0][1] || xyz[2] < mCoord[0][2])
1509 return false;
1510 if (xyz[0] > mCoord[1][0] || xyz[1] > mCoord[1][1] || xyz[2] > mCoord[1][2])
1511 return false;
1512 return true;
1513 }
1514
1515protected:
1516 __hostdev__ BaseBBox() {}
1517 __hostdev__ BaseBBox(const Vec3T& min, const Vec3T& max)
1518 : mCoord{min, max}
1519 {
1520 }
1521}; // BaseBBox
1522
1523 template<typename Vec3T, bool = is_floating_point<typename Vec3T::ValueType>::value>
1524 struct BBox;
1525
1526/// @brief Partial template specialization for floating point coordinate types.
1527///
1528/// @note Min is inclusive and max is exclusive. If min = max the dimension of
1529/// the bounding box is zero and therefore it is also empty.
1530template<typename Vec3T>
1531 struct BBox<Vec3T, true> : public BaseBBox<Vec3T>
1532{
1533 using Vec3Type = Vec3T;
1534 using ValueType = typename Vec3T::ValueType;
1535 static_assert(is_floating_point<ValueType>::value, "Expected a floating point coordinate type");
1536 using BaseT = BaseBBox<Vec3T>;
1537 using BaseT::mCoord;
1538 __hostdev__ BBox()
1539 : BaseT(Vec3T( Maximum<typename Vec3T::ValueType>::value()),
1540 Vec3T(-Maximum<typename Vec3T::ValueType>::value()))
1541 {
1542 }
1543 __hostdev__ BBox(const Vec3T& min, const Vec3T& max)
1544 : BaseT(min, max)
1545 {
1546 }
1547 __hostdev__ BBox(const Coord& min, const Coord& max)
1548 : BaseT(Vec3T(ValueType(min[0]), ValueType(min[1]), ValueType(min[2])),
1549 Vec3T(ValueType(max[0] + 1), ValueType(max[1] + 1), ValueType(max[2] + 1)))
1550 {
1551 }
1552 __hostdev__ BBox(const BaseBBox<Coord>& bbox) : BBox(bbox[0], bbox[1]) {}
1553 __hostdev__ bool empty() const { return mCoord[0][0] >= mCoord[1][0] ||
1554 mCoord[0][1] >= mCoord[1][1] ||
1555 mCoord[0][2] >= mCoord[1][2]; }
1556 __hostdev__ Vec3T dim() const { return this->empty() ? Vec3T(0) : this->max() - this->min(); }
1557 __hostdev__ bool isInside(const Vec3T& p) const
1558 {
1559 return p[0] > mCoord[0][0] && p[1] > mCoord[0][1] && p[2] > mCoord[0][2] &&
1560 p[0] < mCoord[1][0] && p[1] < mCoord[1][1] && p[2] < mCoord[1][2];
1561 }
1562};// BBox<Vec3T, true>
1563
1564/// @brief Partial template specialization for integer coordinate types
1565///
1566/// @note Both min and max are INCLUDED in the bbox so dim = max - min + 1. So,
1567/// if min = max the bounding box contains exactly one point and dim = 1!
1568template<typename CoordT>
1569 struct BBox<CoordT, false> : public BaseBBox<CoordT>
1570{
1571 static_assert(is_same<int, typename CoordT::ValueType>::value, "Expected \"int\" coordinate type");
1572 using BaseT = BaseBBox<CoordT>;
1573 using BaseT::mCoord;
1574 /// @brief Iterator over the domain covered by a BBox
1575 /// @details z is the fastest-moving coordinate.
1576 class Iterator
1577 {
1578 const BBox& mBBox;
1579 CoordT mPos;
1580 public:
1581 __hostdev__ Iterator(const BBox& b)
1582 : mBBox(b)
1583 , mPos(b.min())
1584 {
1585 }
1586 __hostdev__ Iterator& operator++()
1587 {
1588 if (mPos[2] < mBBox[1][2]) {// this is the most common case
1589 ++mPos[2];
1590 } else if (mPos[1] < mBBox[1][1]) {
1591 mPos[2] = mBBox[0][2];
1592 ++mPos[1];
1593 } else if (mPos[0] <= mBBox[1][0]) {
1594 mPos[2] = mBBox[0][2];
1595 mPos[1] = mBBox[0][1];
1596 ++mPos[0];
1597 }
1598 return *this;
1599 }
1600 __hostdev__ Iterator operator++(int)
1601 {
1602 auto tmp = *this;
1603 ++(*this);
1604 return tmp;
1605 }
1606 /// @brief Return @c true if the iterator still points to a valid coordinate.
1607 __hostdev__ operator bool() const { return mPos[0] <= mBBox[1][0]; }
1608 __hostdev__ const CoordT& operator*() const { return mPos; }
1609 }; // Iterator
1610 __hostdev__ Iterator begin() const { return Iterator{*this}; }
1611 __hostdev__ BBox()
1612 : BaseT(CoordT::max(), CoordT::min())
1613 {
1614 }
1615 __hostdev__ BBox(const CoordT& min, const CoordT& max)
1616 : BaseT(min, max)
1617 {
1618 }
1619 template<typename SplitT>
1620 __hostdev__ BBox(BBox& other, const SplitT&)
1621 : BaseT(other.mCoord[0], other.mCoord[1])
1622 {
1623 NANOVDB_ASSERT(this->is_divisible());
1624 const int n = MaxIndex(this->dim());
1625 mCoord[1][n] = (mCoord[0][n] + mCoord[1][n]) >> 1;
1626 other.mCoord[0][n] = mCoord[1][n] + 1;
1627 }
1628 __hostdev__ bool is_divisible() const { return mCoord[0][0] < mCoord[1][0] &&
1629 mCoord[0][1] < mCoord[1][1] &&
1630 mCoord[0][2] < mCoord[1][2]; }
1631 /// @brief Return true if this bounding box is empty, i.e. uninitialized
1632 __hostdev__ bool empty() const { return mCoord[0][0] > mCoord[1][0] ||
1633 mCoord[0][1] > mCoord[1][1] ||
1634 mCoord[0][2] > mCoord[1][2]; }
1635 __hostdev__ CoordT dim() const { return this->empty() ? Coord(0) : this->max() - this->min() + Coord(1); }
1636 __hostdev__ uint64_t volume() const { auto d = this->dim(); return uint64_t(d[0])*uint64_t(d[1])*uint64_t(d[2]); }
1637 __hostdev__ bool isInside(const CoordT& p) const { return !(CoordT::lessThan(p, this->min()) || CoordT::lessThan(this->max(), p)); }
1638 __hostdev__ bool isInside(const BBox& b) const
1639 {
1640 return !(CoordT::lessThan(b.min(), this->min()) || CoordT::lessThan(this->max(), b.max()));
1641 }
1642
1643 /// @warning This converts a CoordBBox into a floating-point bounding box which implies that max += 1 !
1644 template<typename RealT>
1645 __hostdev__ BBox<Vec3<RealT>> asReal() const
1646 {
1647 static_assert(is_floating_point<RealT>::value, "CoordBBox::asReal: Expected a floating point coordinate");
1648 return BBox<Vec3<RealT>>(Vec3<RealT>(RealT(mCoord[0][0]), RealT(mCoord[0][1]), RealT(mCoord[0][2])),
1649 Vec3<RealT>(RealT(mCoord[1][0] + 1), RealT(mCoord[1][1] + 1), RealT(mCoord[1][2] + 1)));
1650 }
1651 /// @brief Return a new instance that is expanded by the specified padding.
1652 __hostdev__ BBox expandBy(typename CoordT::ValueType padding) const
1653 {
1654 return BBox(mCoord[0].offsetBy(-padding), mCoord[1].offsetBy(padding));
1655 }
1656};// BBox<CoordT, false>
1657
1658 using CoordBBox = BBox<Coord>;
1659 using BBoxR = BBox<Vec3R>;
1660
1661// -------------------> Find lowest and highest bit in a word <----------------------------
1662
1663/// @brief Returns the index of the lowest, i.e. least significant, on bit in the specified 32 bit word
1664///
1665/// @warning Assumes that at least one bit is set in the word, i.e. @a v != uint32_t(0)!
1666 NANOVDB_HOSTDEV_DISABLE_WARNING
1667 __hostdev__ static inline uint32_t FindLowestOn(uint32_t v)
1668{
1669 NANOVDB_ASSERT(v);
1670#if defined(_MSC_VER) && defined(NANOVDB_USE_INTRINSICS)
1671 unsigned long index;
1672 _BitScanForward(&index, v);
1673 return static_cast<uint32_t>(index);
1674#elif (defined(__GNUC__) || defined(__clang__)) && defined(NANOVDB_USE_INTRINSICS)
1675 return static_cast<uint32_t>(__builtin_ctzl(v));
1676#else
1677 static const unsigned char DeBruijn[32] = {
1678 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8, 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9};
1679// disable unary minus on unsigned warning
1680#if defined(_MSC_VER) && !defined(__NVCC__)
1681#pragma warning(push)
1682#pragma warning(disable : 4146)
1683#endif
1684 return DeBruijn[uint32_t((v & -v) * 0x077CB531U) >> 27];
1685#if defined(_MSC_VER) && !defined(__NVCC__)
1686#pragma warning(pop)
1687#endif
1688
1689#endif
1690}
1691
1692/// @brief Returns the index of the highest, i.e. most significant, on bit in the specified 32 bit word
1693///
1694/// @warning Assumes that at least one bit is set in the word, i.e. @a v != uint32_t(0)!
1695 NANOVDB_HOSTDEV_DISABLE_WARNING
1696 __hostdev__ static inline uint32_t FindHighestOn(uint32_t v)
1697{
1698 NANOVDB_ASSERT(v);
1699#if defined(_MSC_VER) && defined(NANOVDB_USE_INTRINSICS)
1700 unsigned long index;
1701 _BitScanReverse(&index, v);
1702 return static_cast<uint32_t>(index);
1703#elif (defined(__GNUC__) || defined(__clang__)) && defined(NANOVDB_USE_INTRINSICS)
1704 return sizeof(unsigned long) * 8 - 1 - __builtin_clzl(v);
1705
1706#else
1707 static const unsigned char DeBruijn[32] = {
1708 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31};
1709 v |= v >> 1; // first round down to one less than a power of 2
1710 v |= v >> 2;
1711 v |= v >> 4;
1712 v |= v >> 8;
1713 v |= v >> 16;
1714 return DeBruijn[uint32_t(v * 0x07C4ACDDU) >> 27];
1715#endif
1716}
1717
1718/// @brief Returns the index of the lowest, i.e. least significant, on bit in the specified 64 bit word
1719///
1720/// @warning Assumes that at least one bit is set in the word, i.e. @a v != uint32_t(0)!
1721 NANOVDB_HOSTDEV_DISABLE_WARNING
1722 __hostdev__ static inline uint32_t FindLowestOn(uint64_t v)
1723{
1724 NANOVDB_ASSERT(v);
1725#if defined(_MSC_VER) && defined(NANOVDB_USE_INTRINSICS)
1726 unsigned long index;
1727 _BitScanForward64(&index, v);
1728 return static_cast<uint32_t>(index);
1729#elif (defined(__GNUC__) || defined(__clang__)) && defined(NANOVDB_USE_INTRINSICS)
1730 return static_cast<uint32_t>(__builtin_ctzll(v));
1731#else
1732 static const unsigned char DeBruijn[64] = {
1733 0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28,
1734 62, 5, 39, 46, 44, 42, 22, 9, 24, 35, 59, 56, 49, 18, 29, 11,
1735 63, 52, 6, 26, 37, 40, 33, 47, 61, 45, 43, 21, 23, 58, 17, 10,
1736 51, 25, 36, 32, 60, 20, 57, 16, 50, 31, 19, 15, 30, 14, 13, 12,
1737 };
1738// disable unary minus on unsigned warning
1739#if defined(_MSC_VER) && !defined(__NVCC__)
1740#pragma warning(push)
1741#pragma warning(disable : 4146)
1742#endif
1743 return DeBruijn[uint64_t((v & -v) * UINT64_C(0x022FDD63CC95386D)) >> 58];
1744#if defined(_MSC_VER) && !defined(__NVCC__)
1745#pragma warning(pop)
1746#endif
1747
1748#endif
1749}
1750
1751/// @brief Returns the index of the highest, i.e. most significant, on bit in the specified 64 bit word
1752///
1753/// @warning Assumes that at least one bit is set in the word, i.e. @a v != uint32_t(0)!
1754 NANOVDB_HOSTDEV_DISABLE_WARNING
1755 __hostdev__ static inline uint32_t FindHighestOn(uint64_t v)
1756{
1757 NANOVDB_ASSERT(v);
1758#if defined(_MSC_VER) && defined(NANOVDB_USE_INTRINSICS)
1759 unsigned long index;
1760 _BitScanReverse64(&index, v);
1761 return static_cast<uint32_t>(index);
1762#elif (defined(__GNUC__) || defined(__clang__)) && defined(NANOVDB_USE_INTRINSICS)
1763 return sizeof(unsigned long) * 8 - 1 - __builtin_clzll(v);
1764#else
1765 const uint32_t* p = reinterpret_cast<const uint32_t*>(&v);
1766 return p[1] ? 32u + FindHighestOn(p[1]) : FindHighestOn(p[0]);
1767#endif
1768}
1769
1770// ----------------------------> CountOn <--------------------------------------
1771
1772/// @return Number of bits that are on in the specified 64-bit word
1773 NANOVDB_HOSTDEV_DISABLE_WARNING
1774 __hostdev__ inline uint32_t CountOn(uint64_t v)
1775{
1776#if defined(_MSC_VER) && defined(_M_X64)
1777 v = __popcnt64(v);
1778#elif (defined(__GNUC__) || defined(__clang__))
1779 v = __builtin_popcountll(v);
1780#else
1781 // Software Implementation
1782 v = v - ((v >> 1) & uint64_t(0x5555555555555555));
1783 v = (v & uint64_t(0x3333333333333333)) + ((v >> 2) & uint64_t(0x3333333333333333));
1784 v = (((v + (v >> 4)) & uint64_t(0xF0F0F0F0F0F0F0F)) * uint64_t(0x101010101010101)) >> 56;
1785#endif
1786 return static_cast<uint32_t>(v);
1787}
1788
1789// ----------------------------> Mask <--------------------------------------
1790
1791/// @brief Bit-mask to encode active states and facilitate sequential iterators
1792/// and a fast codec for I/O compression.
1793template<uint32_t LOG2DIM>
1794 class Mask
1795{
1796 static constexpr uint32_t SIZE = 1U << (3 * LOG2DIM); // Number of bits in mask
1797 static constexpr uint32_t WORD_COUNT = SIZE >> 6; // Number of 64 bit words
1798 uint64_t mWords[WORD_COUNT];
1799
1800public:
1801 /// @brief Return the memory footprint in bytes of this Mask
1802 __hostdev__ static size_t memUsage() { return sizeof(Mask); }
1803
1804 /// @brief Return the number of bits available in this Mask
1805 __hostdev__ static uint32_t bitCount() { return SIZE; }
1806
1807 /// @brief Return the number of machine words used by this Mask
1808 __hostdev__ static uint32_t wordCount() { return WORD_COUNT; }
1809
1810 __hostdev__ uint32_t countOn() const
1811 {
1812 uint32_t sum = 0, n = WORD_COUNT;
1813 for (const uint64_t* w = mWords; n--; ++w)
1814 sum += CountOn(*w);
1815 return sum;
1816 }
1817
1818 class Iterator
1819 {
1820 public:
1821 __hostdev__ Iterator()
1822 : mPos(Mask::SIZE)
1823 , mParent(nullptr)
1824 {
1825 }
1826 __hostdev__ Iterator(uint32_t pos, const Mask* parent)
1827 : mPos(pos)
1828 , mParent(parent)
1829 {
1830 }
1831 Iterator& operator=(const Iterator&) = default;
1832 __hostdev__ uint32_t operator*() const { return mPos; }
1833 __hostdev__ operator bool() const { return mPos != Mask::SIZE; }
1834 __hostdev__ Iterator& operator++()
1835 {
1836 mPos = mParent->findNextOn(mPos + 1);
1837 return *this;
1838 }
1839
1840 private:
1841 uint32_t mPos;
1842 const Mask* mParent;
1843 }; // Member class MaskIterator
1844
1845 /// @brief Initialize all bits to zero.
1846 __hostdev__ Mask()
1847 {
1848 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1849 mWords[i] = 0;
1850 }
1851 __hostdev__ Mask(bool on)
1852 {
1853 const uint64_t v = on ? ~uint64_t(0) : uint64_t(0);
1854 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1855 mWords[i] = v;
1856 }
1857
1858 /// @brief Copy constructor
1859 __hostdev__ Mask(const Mask& other)
1860 {
1861 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1862 mWords[i] = other.mWords[i];
1863 }
1864
1865 /// @brief Return the <i>n</i>th word of the bit mask, for a word of arbitrary size.
1866 template<typename WordT>
1867 __hostdev__ WordT getWord(int n) const
1868 {
1869 NANOVDB_ASSERT(n * 8 * sizeof(WordT) < SIZE);
1870 return reinterpret_cast<const WordT*>(mWords)[n];
1871 }
1872
1873 /// @brief Assignment operator that works with openvdb::util::NodeMask
1874 template<typename MaskT>
1875 __hostdev__ Mask& operator=(const MaskT& other)
1876 {
1877 static_assert(sizeof(Mask) == sizeof(MaskT), "Mismatching sizeof");
1878 static_assert(WORD_COUNT == MaskT::WORD_COUNT, "Mismatching word count");
1879 static_assert(LOG2DIM == MaskT::LOG2DIM, "Mismatching LOG2DIM");
1880 auto *src = reinterpret_cast<const uint64_t*>(&other);
1881 uint64_t *dst = mWords;
1882 for (uint32_t i = 0; i < WORD_COUNT; ++i) {
1883 *dst++ = *src++;
1884 }
1885 return *this;
1886 }
1887
1888 __hostdev__ bool operator==(const Mask& other) const
1889 {
1890 for (uint32_t i = 0; i < WORD_COUNT; ++i) {
1891 if (mWords[i] != other.mWords[i]) return false;
1892 }
1893 return true;
1894 }
1895
1896 __hostdev__ bool operator!=(const Mask& other) const { return !((*this) == other); }
1897
1898 __hostdev__ Iterator beginOn() const { return Iterator(this->findFirstOn(), this); }
1899
1900 /// @brief Return true if the given bit is set.
1901 __hostdev__ bool isOn(uint32_t n) const { return 0 != (mWords[n >> 6] & (uint64_t(1) << (n & 63))); }
1902
1903 __hostdev__ bool isOn() const
1904 {
1905 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1906 if (mWords[i] != ~uint64_t(0))
1907 return false;
1908 return true;
1909 }
1910
1911 __hostdev__ bool isOff() const
1912 {
1913 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1914 if (mWords[i] != uint64_t(0))
1915 return false;
1916 return true;
1917 }
1918
1919 /// @brief Set the given bit on.
1920 __hostdev__ void setOn(uint32_t n) { mWords[n >> 6] |= uint64_t(1) << (n & 63); }
1921 __hostdev__ void setOff(uint32_t n) { mWords[n >> 6] &= ~(uint64_t(1) << (n & 63)); }
1922
1923 __hostdev__ void set(uint32_t n, bool On)
1924 {
1925#if 1 // switch between branchless
1926 auto &word = mWords[n >> 6];
1927 n &= 63;
1928 word &= ~(uint64_t(1) << n);
1929 word |= uint64_t(On) << n;
1930#else
1931 On ? this->setOn(n) : this->setOff(n);
1932#endif
1933 }
1934
1935 /// @brief Set all bits on
1936 __hostdev__ void setOn()
1937 {
1938 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1939 mWords[i] = ~uint64_t(0);
1940 }
1941
1942 /// @brief Set all bits off
1943 __hostdev__ void setOff()
1944 {
1945 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1946 mWords[i] = uint64_t(0);
1947 }
1948
1949 /// @brief Set all bits off
1950 __hostdev__ void set(bool on)
1951 {
1952 const uint64_t v = on ? ~uint64_t(0) : uint64_t(0);
1953 for (uint32_t i = 0; i < WORD_COUNT; ++i)
1954 mWords[i] = v;
1955 }
1956 /// brief Toggle the state of all bits in the mask
1957 __hostdev__ void toggle()
1958 {
1959 uint32_t n = WORD_COUNT;
1960 for (auto* w = mWords; n--; ++w)
1961 *w = ~*w;
1962 }
1963 __hostdev__ void toggle(uint32_t n) { mWords[n >> 6] ^= uint64_t(1) << (n & 63); }
1964
1965private:
1966
1967 NANOVDB_HOSTDEV_DISABLE_WARNING
1968 __hostdev__ uint32_t findFirstOn() const
1969 {
1970 uint32_t n = 0;
1971 const uint64_t* w = mWords;
1972 for (; n < WORD_COUNT && !*w; ++w, ++n)
1973 ;
1974 return n == WORD_COUNT ? SIZE : (n << 6) + FindLowestOn(*w);
1975 }
1976
1977 NANOVDB_HOSTDEV_DISABLE_WARNING
1978 __hostdev__ uint32_t findNextOn(uint32_t start) const
1979 {
1980 uint32_t n = start >> 6; // initiate
1981 if (n >= WORD_COUNT)
1982 return SIZE; // check for out of bounds
1983 uint32_t m = start & 63;
1984 uint64_t b = mWords[n];
1985 if (b & (uint64_t(1) << m))
1986 return start; // simple case: start is on
1987 b &= ~uint64_t(0) << m; // mask out lower bits
1988 while (!b && ++n < WORD_COUNT)
1989 b = mWords[n]; // find next non-zero word
1990 return (!b ? SIZE : (n << 6) + FindLowestOn(b)); // catch last word=0
1991 }
1992}; // Mask class
1993
1994// ----------------------------> Map <--------------------------------------
1995
1996/// @brief Defines an affine transform and its inverse represented as a 3x3 matrix and a vec3 translation
1997 struct Map
1998{
1999 float mMatF[9]; // 9*4B <- 3x3 matrix
2000 float mInvMatF[9]; // 9*4B <- 3x3 matrix
2001 float mVecF[3]; // 3*4B <- translation
2002 float mTaperF; // 4B, placeholder for taper value
2003 double mMatD[9]; // 9*8B <- 3x3 matrix
2004 double mInvMatD[9]; // 9*8B <- 3x3 matrix
2005 double mVecD[3]; // 3*8B <- translation
2006 double mTaperD; // 8B, placeholder for taper value
2007
2008 // This method can only be called on the host to initialize the member data
2009 template<typename Mat4T>
2010 __hostdev__ void set(const Mat4T& mat, const Mat4T& invMat, double taper);
2011
2012 template<typename Vec3T>
2013 __hostdev__ Vec3T applyMap(const Vec3T& xyz) const { return matMult(mMatD, mVecD, xyz); }
2014 template<typename Vec3T>
2015 __hostdev__ Vec3T applyMapF(const Vec3T& xyz) const { return matMult(mMatF, mVecF, xyz); }
2016
2017 template<typename Vec3T>
2018 __hostdev__ Vec3T applyJacobian(const Vec3T& xyz) const { return matMult(mMatD, xyz); }
2019 template<typename Vec3T>
2020 __hostdev__ Vec3T applyJacobianF(const Vec3T& xyz) const { return matMult(mMatF, xyz); }
2021
2022 template<typename Vec3T>
2023 __hostdev__ Vec3T applyInverseMap(const Vec3T& xyz) const
2024 {
2025 return matMult(mInvMatD, Vec3T(xyz[0] - mVecD[0], xyz[1] - mVecD[1], xyz[2] - mVecD[2]));
2026 }
2027 template<typename Vec3T>
2028 __hostdev__ Vec3T applyInverseMapF(const Vec3T& xyz) const
2029 {
2030 return matMult(mInvMatF, Vec3T(xyz[0] - mVecF[0], xyz[1] - mVecF[1], xyz[2] - mVecF[2]));
2031 }
2032
2033 template<typename Vec3T>
2034 __hostdev__ Vec3T applyInverseJacobian(const Vec3T& xyz) const { return matMult(mInvMatD, xyz); }
2035 template<typename Vec3T>
2036 __hostdev__ Vec3T applyInverseJacobianF(const Vec3T& xyz) const { return matMult(mInvMatF, xyz); }
2037
2038 template<typename Vec3T>
2039 __hostdev__ Vec3T applyIJT(const Vec3T& xyz) const { return matMultT(mInvMatD, xyz); }
2040 template<typename Vec3T>
2041 __hostdev__ Vec3T applyIJTF(const Vec3T& xyz) const { return matMultT(mInvMatF, xyz); }
2042}; // Map
2043
2044template<typename Mat4T>
2045 void Map::set(const Mat4T& mat, const Mat4T& invMat, double taper)
2046{
2047 float * mf = mMatF, *vf = mVecF;
2048 float* mif = mInvMatF;
2049 double *md = mMatD, *vd = mVecD;
2050 double* mid = mInvMatD;
2051 mTaperF = static_cast<float>(taper);
2052 mTaperD = taper;
2053 for (int i = 0; i < 3; ++i) {
2054 *vd++ = mat[3][i]; //translation
2055 *vf++ = static_cast<float>(mat[3][i]);
2056 for (int j = 0; j < 3; ++j) {
2057 *md++ = mat[j][i]; //transposed
2058 *mid++ = invMat[j][i];
2059 *mf++ = static_cast<float>(mat[j][i]);
2060 *mif++ = static_cast<float>(invMat[j][i]);
2061 }
2062 }
2063}
2064
2065// ----------------------------> GridBlindMetaData <--------------------------------------
2066
2067 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) GridBlindMetaData
2068{
2069 static const int MaxNameSize = 256;// due to NULL termination the maximum length is one less!
2070 int64_t mByteOffset; // byte offset to the blind data, relative to the GridData.
2071 uint64_t mElementCount; // number of elements, e.g. point count
2072 uint32_t mFlags; // flags
2073 GridBlindDataSemantic mSemantic; // semantic meaning of the data.
2074 GridBlindDataClass mDataClass; // 4 bytes
2075 GridType mDataType; // 4 bytes
2076 char mName[MaxNameSize];// note this include the NULL termination
2077
2078 /// @brief return memory usage in bytes for the class (note this computes for all blindMetaData structures.)
2079 __hostdev__ static uint64_t memUsage(uint64_t blindDataCount = 0)
2080 {
2081 return blindDataCount * sizeof(GridBlindMetaData);
2082 }
2083
2084 __hostdev__ void setBlindData(void *ptr) { mByteOffset = PtrDiff(ptr, this); }
2085
2086 template <typename T>
2087 __hostdev__ const T* getBlindData() const { return PtrAdd<T>(this, mByteOffset); }
2088
2089}; // GridBlindMetaData
2090
2091// ----------------------------> NodeTrait <--------------------------------------
2092
2093/// @brief Struct to derive node type from its level in a given
2094/// grid, tree or root while perserving constness
2095template<typename GridOrTreeOrRootT, int LEVEL>
2096 struct NodeTrait;
2097
2098// Partial template specialization of above Node struct
2099template<typename GridOrTreeOrRootT>
2100 struct NodeTrait<GridOrTreeOrRootT, 0>
2101{
2102 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2103 using Type = typename GridOrTreeOrRootT::LeafNodeType;
2104 using type = typename GridOrTreeOrRootT::LeafNodeType;
2105};
2106template<typename GridOrTreeOrRootT>
2107 struct NodeTrait<const GridOrTreeOrRootT, 0>
2108{
2109 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2110 using Type = const typename GridOrTreeOrRootT::LeafNodeType;
2111 using type = const typename GridOrTreeOrRootT::LeafNodeType;
2112};
2113
2114template<typename GridOrTreeOrRootT>
2115 struct NodeTrait<GridOrTreeOrRootT, 1>
2116{
2117 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2118 using Type = typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType;
2119 using type = typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType;
2120};
2121template<typename GridOrTreeOrRootT>
2122 struct NodeTrait<const GridOrTreeOrRootT, 1>
2123{
2124 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2125 using Type = const typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType;
2126 using type = const typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType;
2127};
2128template<typename GridOrTreeOrRootT>
2129 struct NodeTrait<GridOrTreeOrRootT, 2>
2130{
2131 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2132 using Type = typename GridOrTreeOrRootT::RootType::ChildNodeType;
2133 using type = typename GridOrTreeOrRootT::RootType::ChildNodeType;
2134};
2135template<typename GridOrTreeOrRootT>
2136 struct NodeTrait<const GridOrTreeOrRootT, 2>
2137{
2138 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2139 using Type = const typename GridOrTreeOrRootT::RootType::ChildNodeType;
2140 using type = const typename GridOrTreeOrRootT::RootType::ChildNodeType;
2141};
2142template<typename GridOrTreeOrRootT>
2143 struct NodeTrait<GridOrTreeOrRootT, 3>
2144{
2145 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2146 using Type = typename GridOrTreeOrRootT::RootType;
2147 using type = typename GridOrTreeOrRootT::RootType;
2148};
2149
2150template<typename GridOrTreeOrRootT>
2151 struct NodeTrait<const GridOrTreeOrRootT, 3>
2152{
2153 static_assert(GridOrTreeOrRootT::RootType::LEVEL == 3, "Tree depth is not supported");
2154 using Type = const typename GridOrTreeOrRootT::RootType;
2155 using type = const typename GridOrTreeOrRootT::RootType;
2156};
2157
2158// ----------------------------> Grid <--------------------------------------
2159
2160/*
2161 The following class and comment is for internal use only
2162
2163 Memory layout:
2164
2165 Grid -> 39 x double (world bbox and affine transformation)
2166 Tree -> Root 3 x ValueType + int32_t + N x Tiles (background,min,max,tileCount + tileCount x Tiles)
2167
2168 N2 upper InternalNodes each with 2 bit masks, N2 tiles, and min/max values
2169
2170 N1 lower InternalNodes each with 2 bit masks, N1 tiles, and min/max values
2171
2172 N0 LeafNodes each with a bit mask, N0 ValueTypes and min/max
2173
2174 Example layout: ("---" implies it has a custom offset, "..." implies zero or more)
2175 [GridData][TreeData]---[RootData][ROOT TILES...]---[NodeData<5>]---[ModeData<4>]---[LeafData<3>]---[BLINDMETA...]---[BLIND0]---[BLIND1]---etc.
2176*/
2177
2178/// @brief Struct with all the member data of the Grid (useful during serialization of an openvdb grid)
2179///
2180/// @note The transform is assumed to be affine (so linear) and have uniform scale! So frustum transforms
2181/// and non-uniform scaling are not supported (primarily because they complicate ray-tracing in index space)
2182///
2183/// @note No client code should (or can) interface with this struct so it can safely be ignored!
2184 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) GridData
2185{// sizeof(GridData) = 672B
2186 static const int MaxNameSize = 256;// due to NULL termination the maximum length is one less
2187 uint64_t mMagic; // 8B magic to validate it is valid grid data.
2188 uint64_t mChecksum; // 8B. Checksum of grid buffer.
2189 Version mVersion;// 4B major, minor, and patch version numbers
2190 uint32_t mFlags; // 4B. flags for grid.
2191 uint32_t mGridIndex;// 4B. Index of this grid in the buffer
2192 uint32_t mGridCount; // 4B. Total number of grids in the buffer
2193 uint64_t mGridSize; // 8B. byte count of this entire grid occupied in the buffer.
2194 char mGridName[MaxNameSize]; // 256B
2195 Map mMap; // 264B. affine transformation between index and world space in both single and double precision
2196 BBox<Vec3R> mWorldBBox; // 48B. floating-point AABB of active values in WORLD SPACE (2 x 3 doubles)
2197 Vec3R mVoxelSize; // 24B. size of a voxel in world units
2198 GridClass mGridClass; // 4B.
2199 GridType mGridType; // 4B.
2200 int64_t mBlindMetadataOffset; // 8B. offset of GridBlindMetaData structures that follow this grid.
2201 uint32_t mBlindMetadataCount; // 4B. count of GridBlindMetaData structures that follow this grid.
2202
2203
2204 // Set and unset various bit flags
2205 __hostdev__ void setFlagsOff() { mFlags = uint32_t(0); }
2206 __hostdev__ void setMinMaxOn(bool on = true)
2207 {
2208 if (on) {
2209 mFlags |= static_cast<uint32_t>(GridFlags::HasMinMax);
2210 } else {
2211 mFlags &= ~static_cast<uint32_t>(GridFlags::HasMinMax);
2212 }
2213 }
2214 __hostdev__ void setBBoxOn(bool on = true)
2215 {
2216 if (on) {
2217 mFlags |= static_cast<uint32_t>(GridFlags::HasBBox);
2218 } else {
2219 mFlags &= ~static_cast<uint32_t>(GridFlags::HasBBox);
2220 }
2221 }
2222 __hostdev__ void setLongGridNameOn(bool on = true)
2223 {
2224 if (on) {
2225 mFlags |= static_cast<uint32_t>(GridFlags::HasLongGridName);
2226 } else {
2227 mFlags &= ~static_cast<uint32_t>(GridFlags::HasLongGridName);
2228 }
2229 }
2230 __hostdev__ void setAverageOn(bool on = true)
2231 {
2232 if (on) {
2233 mFlags |= static_cast<uint32_t>(GridFlags::HasAverage);
2234 } else {
2235 mFlags &= ~static_cast<uint32_t>(GridFlags::HasAverage);
2236 }
2237 }
2238 __hostdev__ void setStdDeviationOn(bool on = true)
2239 {
2240 if (on) {
2241 mFlags |= static_cast<uint32_t>(GridFlags::HasStdDeviation);
2242 } else {
2243 mFlags &= ~static_cast<uint32_t>(GridFlags::HasStdDeviation);
2244 }
2245 }
2246 __hostdev__ void setBreadthFirstOn(bool on = true)
2247 {
2248 if (on) {
2249 mFlags |= static_cast<uint32_t>(GridFlags::IsBreadthFirst);
2250 } else {
2251 mFlags &= ~static_cast<uint32_t>(GridFlags::IsBreadthFirst);
2252 }
2253 }
2254
2255 // Affine transformations based on double precision
2256 template<typename Vec3T>
2257 __hostdev__ Vec3T applyMap(const Vec3T& xyz) const { return mMap.applyMap(xyz); } // Pos: index -> world
2258 template<typename Vec3T>
2259 __hostdev__ Vec3T applyInverseMap(const Vec3T& xyz) const { return mMap.applyInverseMap(xyz); } // Pos: world -> index
2260 template<typename Vec3T>
2261 __hostdev__ Vec3T applyJacobian(const Vec3T& xyz) const { return mMap.applyJacobian(xyz); } // Dir: index -> world
2262 template<typename Vec3T>
2263 __hostdev__ Vec3T applyInverseJacobian(const Vec3T& xyz) const { return mMap.applyInverseJacobian(xyz); } // Dir: world -> index
2264 template<typename Vec3T>
2265 __hostdev__ Vec3T applyIJT(const Vec3T& xyz) const { return mMap.applyIJT(xyz); }
2266 // Affine transformations based on single precision
2267 template<typename Vec3T>
2268 __hostdev__ Vec3T applyMapF(const Vec3T& xyz) const { return mMap.applyMapF(xyz); } // Pos: index -> world
2269 template<typename Vec3T>
2270 __hostdev__ Vec3T applyInverseMapF(const Vec3T& xyz) const { return mMap.applyInverseMapF(xyz); } // Pos: world -> index
2271 template<typename Vec3T>
2272 __hostdev__ Vec3T applyJacobianF(const Vec3T& xyz) const { return mMap.applyJacobianF(xyz); } // Dir: index -> world
2273 template<typename Vec3T>
2274 __hostdev__ Vec3T applyInverseJacobianF(const Vec3T& xyz) const { return mMap.applyInverseJacobianF(xyz); } // Dir: world -> index
2275 template<typename Vec3T>
2276 __hostdev__ Vec3T applyIJTF(const Vec3T& xyz) const { return mMap.applyIJTF(xyz); }
2277
2278 // @brief Return a non-const void pointer to the tree
2279 __hostdev__ void* treePtr() { return this + 1; }
2280
2281 // @brief Return a const void pointer to the tree
2282 __hostdev__ const void* treePtr() const { return this + 1; }
2283
2284 /// @brief Returns a const reference to the blindMetaData at the specified linear offset.
2285 ///
2286 /// @warning The linear offset is assumed to be in the valid range
2287 __hostdev__ const GridBlindMetaData* blindMetaData(uint32_t n) const
2288 {
2289 NANOVDB_ASSERT(n < mBlindMetadataCount);
2290 return PtrAdd<GridBlindMetaData>(this, mBlindMetadataOffset) + n;
2291 }
2292
2293}; // GridData
2294
2295// Forward declaration of accelerated random access class
2296template <typename BuildT, int LEVEL0 = -1, int LEVEL1 = -1, int LEVEL2 = -1>
2297 class ReadAccessor;
2298
2299template <typename BuildT>
2300 using DefaultReadAccessor = ReadAccessor<BuildT, 0, 1, 2>;
2301
2302/// @brief Highest level of the data structure. Contains a tree and a world->index
2303/// transform (that currently only supports uniform scaling and translation).
2304///
2305/// @note This the API of this class to interface with client code
2306template<typename TreeT>
2307 class Grid : private GridData
2308{
2309public:
2310 using TreeType = TreeT;
2311 using RootType = typename TreeT::RootType;
2312 using DataType = GridData;
2313 using ValueType = typename TreeT::ValueType;
2314 using BuildType = typename TreeT::BuildType;// in rare cases BuildType != ValueType, e.g. then BuildType = ValueMask and ValueType = bool
2315 using CoordType = typename TreeT::CoordType;
2316 using AccessorType = DefaultReadAccessor<BuildType>;
2317
2318 /// @brief Disallow constructions, copy and assignment
2319 ///
2320 /// @note Only a Serializer, defined elsewhere, can instantiate this class
2321 Grid(const Grid&) = delete;
2322 Grid& operator=(const Grid&) = delete;
2323 ~Grid() = delete;
2324
2325 __hostdev__ Version version() const { return DataType::mVersion; }
2326
2327 __hostdev__ DataType* data() { return reinterpret_cast<DataType*>(this); }
2328
2329 __hostdev__ const DataType* data() const { return reinterpret_cast<const DataType*>(this); }
2330
2331 /// @brief Return memory usage in bytes for this class only.
2332 __hostdev__ static uint64_t memUsage() { return sizeof(GridData); }
2333
2334 /// @brief Return the memory footprint of the entire grid, i.e. including all nodes and blind data
2335 __hostdev__ uint64_t gridSize() const { return DataType::mGridSize; }
2336
2337 /// @brief Return index of this grid in the buffer
2338 __hostdev__ uint32_t gridIndex() const { return DataType::mGridIndex; }
2339
2340 /// @brief Return total number of grids in the buffer
2341 __hostdev__ uint32_t gridCount() const { return DataType::mGridCount; }
2342
2343 /// @brief Return a const reference to the tree
2344 __hostdev__ const TreeT& tree() const { return *reinterpret_cast<const TreeT*>(this->treePtr()); }
2345
2346 /// @brief Return a non-const reference to the tree
2347 __hostdev__ TreeT& tree() { return *reinterpret_cast<TreeT*>(this->treePtr()); }
2348
2349 /// @brief Return a new instance of a ReadAccessor used to access values in this grid
2350 __hostdev__ AccessorType getAccessor() const { return AccessorType(this->tree().root()); }
2351
2352 /// @brief Return a const reference to the size of a voxel in world units
2353 __hostdev__ const Vec3R& voxelSize() const { return DataType::mVoxelSize; }
2354
2355 /// @brief Return a const reference to the Map for this grid
2356 __hostdev__ const Map& map() const { return DataType::mMap; }
2357
2358 /// @brief world to index space transformation
2359 template<typename Vec3T>
2360 __hostdev__ Vec3T worldToIndex(const Vec3T& xyz) const { return this->applyInverseMap(xyz); }
2361
2362 /// @brief index to world space transformation
2363 template<typename Vec3T>
2364 __hostdev__ Vec3T indexToWorld(const Vec3T& xyz) const { return this->applyMap(xyz); }
2365
2366 /// @brief transformation from index space direction to world space direction
2367 /// @warning assumes dir to be normalized
2368 template<typename Vec3T>
2369 __hostdev__ Vec3T indexToWorldDir(const Vec3T& dir) const { return this->applyJacobian(dir); }
2370
2371 /// @brief transformation from world space direction to index space direction
2372 /// @warning assumes dir to be normalized
2373 template<typename Vec3T>
2374 __hostdev__ Vec3T worldToIndexDir(const Vec3T& dir) const { return this->applyInverseJacobian(dir); }
2375
2376 /// @brief transform the gradient from index space to world space.
2377 /// @details Applies the inverse jacobian transform map.
2378 template<typename Vec3T>
2379 __hostdev__ Vec3T indexToWorldGrad(const Vec3T& grad) const { return this->applyIJT(grad); }
2380
2381 /// @brief world to index space transformation
2382 template<typename Vec3T>
2383 __hostdev__ Vec3T worldToIndexF(const Vec3T& xyz) const { return this->applyInverseMapF(xyz); }
2384
2385 /// @brief index to world space transformation
2386 template<typename Vec3T>
2387 __hostdev__ Vec3T indexToWorldF(const Vec3T& xyz) const { return this->applyMapF(xyz); }
2388
2389 /// @brief transformation from index space direction to world space direction
2390 /// @warning assumes dir to be normalized
2391 template<typename Vec3T>
2392 __hostdev__ Vec3T indexToWorldDirF(const Vec3T& dir) const { return this->applyJacobianF(dir); }
2393
2394 /// @brief transformation from world space direction to index space direction
2395 /// @warning assumes dir to be normalized
2396 template<typename Vec3T>
2397 __hostdev__ Vec3T worldToIndexDirF(const Vec3T& dir) const { return this->applyInverseJacobianF(dir); }
2398
2399 /// @brief Transforms the gradient from index space to world space.
2400 /// @details Applies the inverse jacobian transform map.
2401 template<typename Vec3T>
2402 __hostdev__ Vec3T indexToWorldGradF(const Vec3T& grad) const { return DataType::applyIJTF(grad); }
2403
2404 /// @brief Computes a AABB of active values in world space
2405 __hostdev__ const BBox<Vec3R>& worldBBox() const { return DataType::mWorldBBox; }
2406
2407 /// @brief Computes a AABB of active values in index space
2408 ///
2409 /// @note This method is returning a floating point bounding box and not a CoordBBox. This makes
2410 /// it more useful for clipping rays.
2411 __hostdev__ const BBox<CoordType>& indexBBox() const { return this->tree().bbox(); }
2412
2413 /// @brief Return the total number of active voxels in this tree.
2414 __hostdev__ uint64_t activeVoxelCount() const { return this->tree().activeVoxelCount(); }
2415
2416 /// @brief Methods related to the classification of this grid
2417 __hostdev__ bool isValid() const { return DataType::mMagic == NANOVDB_MAGIC_NUMBER; }
2418 __hostdev__ const GridType& gridType() const { return DataType::mGridType; }
2419 __hostdev__ const GridClass& gridClass() const { return DataType::mGridClass; }
2420 __hostdev__ bool isLevelSet() const { return DataType::mGridClass == GridClass::LevelSet; }
2421 __hostdev__ bool isFogVolume() const { return DataType::mGridClass == GridClass::FogVolume; }
2422 __hostdev__ bool isStaggered() const { return DataType::mGridClass == GridClass::Staggered; }
2423 __hostdev__ bool isPointIndex() const { return DataType::mGridClass == GridClass::PointIndex; }
2424 __hostdev__ bool isPointData() const { return DataType::mGridClass == GridClass::PointData; }
2425 __hostdev__ bool isMask() const { return DataType::mGridClass == GridClass::Topology; }
2426 __hostdev__ bool isUnknown() const { return DataType::mGridClass == GridClass::Unknown; }
2427 __hostdev__ bool hasMinMax() const { return DataType::mFlags & static_cast<uint32_t>(GridFlags::HasMinMax); }
2428 __hostdev__ bool hasBBox() const { return DataType::mFlags & static_cast<uint32_t>(GridFlags::HasBBox); }
2429 __hostdev__ bool hasLongGridName() const { return DataType::mFlags & static_cast<uint32_t>(GridFlags::HasLongGridName); }
2430 __hostdev__ bool hasAverage() const { return DataType::mFlags & static_cast<uint32_t>(GridFlags::HasAverage); }
2431 __hostdev__ bool hasStdDeviation() const { return DataType::mFlags & static_cast<uint32_t>(GridFlags::HasStdDeviation); }
2432 __hostdev__ bool isBreadthFirst() const { return DataType::mFlags & static_cast<uint32_t>(GridFlags::IsBreadthFirst); }
2433
2434 /// @brief return true if the specified node type is layed out breadth-first in memory and has a fixed size.
2435 /// This allows for sequential access to the nodes.
2436 template <typename NodeT>
2437 __hostdev__ bool isSequential() const { return NodeT::FIXED_SIZE && this->isBreadthFirst(); }
2438
2439 /// @brief return true if the specified node level is layed out breadth-first in memory and has a fixed size.
2440 /// This allows for sequential access to the nodes.
2441 template <int LEVEL>
2442 __hostdev__ bool isSequential() const { return NodeTrait<TreeT,LEVEL>::type::FIXED_SIZE && this->isBreadthFirst(); }
2443
2444 /// @brief Return a c-string with the name of this grid
2445 __hostdev__ const char* gridName() const
2446 {
2447 if (this->hasLongGridName()) {
2448 const auto &metaData = this->blindMetaData(DataType::mBlindMetadataCount-1);// always the last
2449 NANOVDB_ASSERT(metaData.mDataClass == GridBlindDataClass::GridName);
2450 return metaData.template getBlindData<const char>();
2451 }
2452 return DataType::mGridName;
2453 }
2454
2455 /// @brief Return a c-string with the name of this grid, truncated to 255 characters
2456 __hostdev__ const char* shortGridName() const { return DataType::mGridName; }
2457
2458 /// @brief Return checksum of the grid buffer.
2459 __hostdev__ uint64_t checksum() const { return DataType::mChecksum; }
2460
2461 /// @brief Return true if this grid is empty, i.e. contains no values or nodes.
2462 __hostdev__ bool isEmpty() const { return this->tree().isEmpty(); }
2463
2464 /// @brief Return the count of blind-data encoded in this grid
2465 __hostdev__ int blindDataCount() const { return DataType::mBlindMetadataCount; }
2466
2467 /// @brief Return the index of the blind data with specified semantic if found, otherwise -1.
2468 __hostdev__ int findBlindDataForSemantic(GridBlindDataSemantic semantic) const;
2469
2470 /// @brief Returns a const pointer to the blindData at the specified linear offset.
2471 ///
2472 /// @warning Point might be NULL and the linear offset is assumed to be in the valid range
2473 __hostdev__ const void* blindData(uint32_t n) const
2474 {
2475 if (DataType::mBlindMetadataCount == 0) {
2476 return nullptr;
2477 }
2478 NANOVDB_ASSERT(n < DataType::mBlindMetadataCount);
2479 return this->blindMetaData(n).template getBlindData<void>();
2480 }
2481
2482 __hostdev__ const GridBlindMetaData& blindMetaData(int n) const { return *DataType::blindMetaData(n); }
2483
2484private:
2485 static_assert(sizeof(GridData) % NANOVDB_DATA_ALIGNMENT == 0, "sizeof(GridData) is misaligned");
2486}; // Class Grid
2487
2488template<typename TreeT>
2489 int Grid<TreeT>::findBlindDataForSemantic(GridBlindDataSemantic semantic) const
2490{
2491 for (uint32_t i = 0, n = this->blindDataCount(); i < n; ++i)
2492 if (this->blindMetaData(i).mSemantic == semantic)
2493 return int(i);
2494 return -1;
2495}
2496
2497// ----------------------------> Tree <--------------------------------------
2498
2499template<int ROOT_LEVEL = 3>
2500 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) TreeData
2501{// sizeof(TreeData<3>) == 64B
2502 static_assert(ROOT_LEVEL == 3, "Root level is assumed to be three");
2503 uint64_t mNodeOffset[4];//32B, byte offset from this tree to first leaf, lower, upper and root node
2504 uint32_t mNodeCount[3];// 12B, total number of nodes of type: leaf, lower internal, upper internal
2505 uint32_t mTileCount[3];// 12B, total number of tiles of type: leaf, lower internal, upper internal (node, only active tiles!)
2506 uint64_t mVoxelCount;// 8B, total number of active voxels in the root and all its child nodes.
2507
2508 template <typename RootT>
2509 __hostdev__ void setRoot(const RootT* root) { mNodeOffset[3] = PtrDiff(root, this); }
2510 template <typename RootT>
2511 __hostdev__ RootT* getRoot() { return PtrAdd<RootT>(this, mNodeOffset[3]); }
2512 template <typename RootT>
2513 __hostdev__ const RootT* getRoot() const { return PtrAdd<RootT>(this, mNodeOffset[3]); }
2514
2515 template <typename NodeT>
2516 __hostdev__ void setFirstNode(const NodeT* node)
2517 {
2518 mNodeOffset[NodeT::LEVEL] = node ? PtrDiff(node, this) : 0;
2519 }
2520};
2521
2522// ----------------------------> GridTree <--------------------------------------
2523
2524/// @brief defines a tree type from a grid type while perserving constness
2525template<typename GridT>
2526 struct GridTree
2527{
2528 using Type = typename GridT::TreeType;
2529 using type = typename GridT::TreeType;
2530};
2531template<typename GridT>
2532 struct GridTree<const GridT>
2533{
2534 using Type = const typename GridT::TreeType;
2535 using type = const typename GridT::TreeType;
2536};
2537
2538// ----------------------------> Tree <--------------------------------------
2539
2540/// @brief VDB Tree, which is a thin wrapper around a RootNode.
2541template<typename RootT>
2542 class Tree : private TreeData<RootT::LEVEL>
2543{
2544 static_assert(RootT::LEVEL == 3, "Tree depth is not supported");
2545 static_assert(RootT::ChildNodeType::LOG2DIM == 5, "Tree configuration is not supported");
2546 static_assert(RootT::ChildNodeType::ChildNodeType::LOG2DIM == 4, "Tree configuration is not supported");
2547 static_assert(RootT::LeafNodeType::LOG2DIM == 3, "Tree configuration is not supported");
2548
2549public:
2550 using DataType = TreeData<RootT::LEVEL>;
2551 using RootType = RootT;
2552 using LeafNodeType = typename RootT::LeafNodeType;
2553 using ValueType = typename RootT::ValueType;
2554 using BuildType = typename RootT::BuildType;// in rare cases BuildType != ValueType, e.g. then BuildType = ValueMask and ValueType = bool
2555 using CoordType = typename RootT::CoordType;
2556 using AccessorType = DefaultReadAccessor<BuildType>;
2557
2558 using Node3 = RootT;
2559 using Node2 = typename RootT::ChildNodeType;
2560 using Node1 = typename Node2::ChildNodeType;
2561 using Node0 = LeafNodeType;
2562
2563 /// @brief This class cannot be constructed or deleted
2564 Tree() = delete;
2565 Tree(const Tree&) = delete;
2566 Tree& operator=(const Tree&) = delete;
2567 ~Tree() = delete;
2568
2569 __hostdev__ DataType* data() { return reinterpret_cast<DataType*>(this); }
2570
2571 __hostdev__ const DataType* data() const { return reinterpret_cast<const DataType*>(this); }
2572
2573 /// @brief return memory usage in bytes for the class
2574 __hostdev__ static uint64_t memUsage() { return sizeof(DataType); }
2575
2576 __hostdev__ RootT& root() { return *DataType::template getRoot<RootT>(); }
2577
2578 __hostdev__ const RootT& root() const { return *DataType::template getRoot<RootT>(); }
2579
2580 __hostdev__ AccessorType getAccessor() const { return AccessorType(this->root()); }
2581
2582 /// @brief Return the value of the given voxel (regardless of state or location in the tree.)
2583 __hostdev__ ValueType getValue(const CoordType& ijk) const { return this->root().getValue(ijk); }
2584
2585 /// @brief Return the active state of the given voxel (regardless of state or location in the tree.)
2586 __hostdev__ bool isActive(const CoordType& ijk) const { return this->root().isActive(ijk); }
2587
2588 /// @brief Return true if this tree is empty, i.e. contains no values or nodes
2589 __hostdev__ bool isEmpty() const { return this->root().isEmpty(); }
2590
2591 /// @brief Combines the previous two methods in a single call
2592 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const { return this->root().probeValue(ijk, v); }
2593
2594 /// @brief Return a const reference to the background value.
2595 __hostdev__ const ValueType& background() const { return this->root().background(); }
2596
2597 /// @brief Sets the extrema values of all the active values in this tree, i.e. in all nodes of the tree
2598 __hostdev__ void extrema(ValueType& min, ValueType& max) const;
2599
2600 /// @brief Return a const reference to the index bounding box of all the active values in this tree, i.e. in all nodes of the tree
2601 __hostdev__ const BBox<CoordType>& bbox() const { return this->root().bbox(); }
2602
2603 /// @brief Return the total number of active voxels in this tree.
2604 __hostdev__ uint64_t activeVoxelCount() const { return DataType::mVoxelCount; }
2605
2606 /// @brief Return the total number of active tiles at the specified level of the tree.
2607 ///
2608 /// @details n = 0 corresponds to leaf level tiles.
2609 __hostdev__ const uint32_t& activeTileCount(uint32_t n) const
2610 {
2611 NANOVDB_ASSERT(n < 3);
2612 return DataType::mTileCount[n];
2613 }
2614
2615 template<typename NodeT>
2616 __hostdev__ uint32_t nodeCount() const
2617 {
2618 static_assert(NodeT::LEVEL < 3, "Invalid NodeT");
2619 return DataType::mNodeCount[NodeT::LEVEL];
2620 }
2621
2622 __hostdev__ uint32_t nodeCount(int level) const
2623 {
2624 NANOVDB_ASSERT(level < 3);
2625 return DataType::mNodeCount[level];
2626 }
2627
2628 /// @brief return a pointer to the first node of the specified type
2629 ///
2630 /// @warning Note it may return NULL if no nodes exist
2631 template <typename NodeT>
2632 __hostdev__ NodeT* getFirstNode()
2633 {
2634 const uint64_t offset = DataType::mNodeOffset[NodeT::LEVEL];
2635 return offset>0 ? PtrAdd<NodeT>(this, offset) : nullptr;
2636 }
2637
2638 /// @brief return a const pointer to the first node of the specified type
2639 ///
2640 /// @warning Note it may return NULL if no nodes exist
2641 template <typename NodeT>
2642 __hostdev__ const NodeT* getFirstNode() const
2643 {
2644 const uint64_t offset = DataType::mNodeOffset[NodeT::LEVEL];
2645 return offset>0 ? PtrAdd<NodeT>(this, offset) : nullptr;
2646 }
2647
2648 /// @brief return a pointer to the first node at the specified level
2649 ///
2650 /// @warning Note it may return NULL if no nodes exist
2651 template <int LEVEL>
2652 __hostdev__ typename NodeTrait<RootT, LEVEL>::type*
2653 getFirstNode()
2654 {
2655 return this->template getFirstNode<typename NodeTrait<RootT,LEVEL>::type>();
2656 }
2657
2658 /// @brief return a const pointer to the first node of the specified level
2659 ///
2660 /// @warning Note it may return NULL if no nodes exist
2661 template <int LEVEL>
2662 __hostdev__ const typename NodeTrait<RootT, LEVEL>::type*
2663 getFirstNode() const
2664 {
2665 return this->template getFirstNode<typename NodeTrait<RootT,LEVEL>::type>();
2666 }
2667
2668private:
2669 static_assert(sizeof(DataType) % NANOVDB_DATA_ALIGNMENT == 0, "sizeof(TreeData) is misaligned");
2670
2671}; // Tree class
2672
2673template<typename RootT>
2674 void Tree<RootT>::extrema(ValueType& min, ValueType& max) const
2675{
2676 min = this->root().minimum();
2677 max = this->root().maximum();
2678}
2679
2680// --------------------------> RootNode <------------------------------------
2681
2682/// @brief Struct with all the member data of the RootNode (useful during serialization of an openvdb RootNode)
2683///
2684/// @note No client code should (or can) interface with this struct so it can safely be ignored!
2685template<typename ChildT>
2686 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) RootData
2687{
2688 using ValueT = typename ChildT::ValueType;
2689 using BuildT = typename ChildT::BuildType;// in rare cases BuildType != ValueType, e.g. then BuildType = ValueMask and ValueType = bool
2690 using CoordT = typename ChildT::CoordType;
2691 using StatsT = typename ChildT::FloatType;
2692 static constexpr bool FIXED_SIZE = false;
2693
2694 /// @brief Return a key based on the coordinates of a voxel
2695#ifdef USE_SINGLE_ROOT_KEY
2696 using KeyT = uint64_t;
2697 template <typename CoordType>
2698 __hostdev__ static KeyT CoordToKey(const CoordType& ijk)
2699 {
2700 static_assert(sizeof(CoordT) == sizeof(CoordType), "Mismatching sizeof");
2701 static_assert(32 - ChildT::TOTAL <= 21, "Cannot use 64 bit root keys");
2702 return (KeyT(uint32_t(ijk[2]) >> ChildT::TOTAL)) | // z is the lower 21 bits
2703 (KeyT(uint32_t(ijk[1]) >> ChildT::TOTAL) << 21) | // y is the middle 21 bits
2704 (KeyT(uint32_t(ijk[0]) >> ChildT::TOTAL) << 42); // x is the upper 21 bits
2705 }
2706 __hostdev__ static CoordT KeyToCoord(const KeyT& key)
2707 {
2708 static constexpr uint64_t MASK = (1u << 21) - 1;
2709 return CoordT(((key >> 42) & MASK) << ChildT::TOTAL,
2710 ((key >> 21) & MASK) << ChildT::TOTAL,
2711 (key & MASK) << ChildT::TOTAL);
2712 }
2713#else
2714 using KeyT = CoordT;
2715 __hostdev__ static KeyT CoordToKey(const CoordT& ijk) { return ijk & ~ChildT::MASK; }
2716 __hostdev__ static CoordT KeyToCoord(const KeyT& key) { return key; }
2717#endif
2718 BBox<CoordT> mBBox; // 24B. AABB if active values in index space.
2719 uint32_t mTableSize; // 4B. number of tiles and child pointers in the root node
2720
2721 ValueT mBackground; // background value, i.e. value of any unset voxel
2722 ValueT mMinimum; // typically 4B, minmum of all the active values
2723 ValueT mMaximum; // typically 4B, maximum of all the active values
2724 StatsT mAverage; // typically 4B, average of all the active values in this node and its child nodes
2725 StatsT mStdDevi; // typically 4B, standard deviation of all the active values in this node and its child nodes
2726
2727 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) Tile
2728 {
2729 template <typename CoordType>
2730 __hostdev__ void setChild(const CoordType& k, const ChildT *ptr, const RootData *data)
2731 {
2732 key = CoordToKey(k);
2733 child = PtrDiff(ptr, data);
2734 }
2735 template <typename CoordType, typename ValueType>
2736 __hostdev__ void setValue(const CoordType& k, bool s, const ValueType &v)
2737 {
2738 key = CoordToKey(k);
2739 state = s;
2740 value = v;
2741 child = 0;
2742 }
2743 __hostdev__ bool isChild() const { return child; }
2744 __hostdev__ CoordT origin() const { return KeyToCoord(key); }
2745 KeyT key; // USE_SINGLE_ROOT_KEY ? 8B : 12B
2746 int64_t child; // 8B. signed byte offset from this node to the child node. 0 means it is a constant tile, so use value.
2747 uint32_t state; // 4B. state of tile value
2748 ValueT value; // value of tile (i.e. no child node)
2749 }; // Tile
2750
2751 /// @brief Returns a non-const reference to the tile at the specified linear offset.
2752 ///
2753 /// @warning The linear offset is assumed to be in the valid range
2754 __hostdev__ const Tile* tile(uint32_t n) const
2755 {
2756 NANOVDB_ASSERT(n < mTableSize);
2757 return reinterpret_cast<const Tile*>(this + 1) + n;
2758 }
2759 __hostdev__ Tile* tile(uint32_t n)
2760 {
2761 NANOVDB_ASSERT(n < mTableSize);
2762 return reinterpret_cast<Tile*>(this + 1) + n;
2763 }
2764
2765 /// @brief Returns a const reference to the child node in the specified tile.
2766 ///
2767 /// @warning A child node is assumed to exist in the specified tile
2768 __hostdev__ ChildT* getChild(const Tile* tile)
2769 {
2770 NANOVDB_ASSERT(tile->child);
2771 return PtrAdd<ChildT>(this, tile->child);
2772 }
2773 __hostdev__ const ChildT* getChild(const Tile* tile) const
2774 {
2775 NANOVDB_ASSERT(tile->child);
2776 return PtrAdd<ChildT>(this, tile->child);
2777 }
2778
2779 __hostdev__ const ValueT& getMin() const { return mMinimum; }
2780 __hostdev__ const ValueT& getMax() const { return mMaximum; }
2781 __hostdev__ const StatsT& average() const { return mAverage; }
2782 __hostdev__ const StatsT& stdDeviation() const { return mStdDevi; }
2783
2784 __hostdev__ void setMin(const ValueT& v) { mMinimum = v; }
2785 __hostdev__ void setMax(const ValueT& v) { mMaximum = v; }
2786 __hostdev__ void setAvg(const StatsT& v) { mAverage = v; }
2787 __hostdev__ void setDev(const StatsT& v) { mStdDevi = v; }
2788
2789 /// @brief This class cannot be constructed or deleted
2790 RootData() = delete;
2791 RootData(const RootData&) = delete;
2792 RootData& operator=(const RootData&) = delete;
2793 ~RootData() = delete;
2794}; // RootData
2795
2796/// @brief Top-most node of the VDB tree structure.
2797template<typename ChildT>
2798 class RootNode : private RootData<ChildT>
2799{
2800public:
2801 using DataType = RootData<ChildT>;
2802 using LeafNodeType = typename ChildT::LeafNodeType;
2803 using ChildNodeType = ChildT;
2804 using RootType = RootNode<ChildT>;// this allows RootNode to behave like a Tree
2805
2806 using ValueType = typename DataType::ValueT;
2807 using FloatType = typename DataType::StatsT;
2808 using BuildType = typename DataType::BuildT;// in rare cases BuildType != ValueType, e.g. then BuildType = ValueMask and ValueType = bool
2809
2810 using CoordType = typename ChildT::CoordType;
2811 using AccessorType = DefaultReadAccessor<BuildType>;
2812 using Tile = typename DataType::Tile;
2813 static constexpr bool FIXED_SIZE = DataType::FIXED_SIZE;
2814
2815 static constexpr uint32_t LEVEL = 1 + ChildT::LEVEL; // level 0 = leaf
2816
2817 /// @brief This class cannot be constructed or deleted
2818 RootNode() = delete;
2819 RootNode(const RootNode&) = delete;
2820 RootNode& operator=(const RootNode&) = delete;
2821 ~RootNode() = delete;
2822
2823 __hostdev__ AccessorType getAccessor() const { return AccessorType(*this); }
2824
2825 __hostdev__ DataType* data() { return reinterpret_cast<DataType*>(this); }
2826
2827 __hostdev__ const DataType* data() const { return reinterpret_cast<const DataType*>(this); }
2828
2829 /// @brief Return a const reference to the index bounding box of all the active values in this tree, i.e. in all nodes of the tree
2830 __hostdev__ const BBox<CoordType>& bbox() const { return DataType::mBBox; }
2831
2832 /// @brief Return the total number of active voxels in the root and all its child nodes.
2833
2834 /// @brief Return a const reference to the background value, i.e. the value associated with
2835 /// any coordinate location that has not been set explicitly.
2836 __hostdev__ const ValueType& background() const { return DataType::mBackground; }
2837
2838 /// @brief Return the number of tiles encoded in this root node
2839 __hostdev__ const uint32_t& tileCount() const { return DataType::mTableSize; }
2840
2841 /// @brief Return a const reference to the minimum active value encoded in this root node and any of its child nodes
2842 __hostdev__ const ValueType& minimum() const { return this->getMin(); }
2843
2844 /// @brief Return a const reference to the maximum active value encoded in this root node and any of its child nodes
2845 __hostdev__ const ValueType& maximum() const { return this->getMax(); }
2846
2847 /// @brief Return a const reference to the average of all the active values encoded in this root node and any of its child nodes
2848 __hostdev__ const FloatType& average() const { return DataType::mAverage; }
2849
2850 /// @brief Return the variance of all the active values encoded in this root node and any of its child nodes
2851 __hostdev__ FloatType variance() const { return DataType::mStdDevi * DataType::mStdDevi; }
2852
2853 /// @brief Return a const reference to the standard deviation of all the active values encoded in this root node and any of its child nodes
2854 __hostdev__ const FloatType& stdDeviation() const { return DataType::mStdDevi; }
2855
2856 /// @brief Return the expected memory footprint in bytes with the specified number of tiles
2857 __hostdev__ static uint64_t memUsage(uint32_t tableSize) { return sizeof(RootNode) + tableSize * sizeof(Tile); }
2858
2859 /// @brief Return the actual memory footprint of this root node
2860 __hostdev__ uint64_t memUsage() const { return sizeof(RootNode) + DataType::mTableSize * sizeof(Tile); }
2861
2862 /// @brief Return the value of the given voxel
2863 __hostdev__ ValueType getValue(const CoordType& ijk) const
2864 {
2865 if (const Tile* tile = this->findTile(ijk)) {
2866 return tile->isChild() ? this->getChild(tile)->getValue(ijk) : tile->value;
2867 }
2868 return DataType::mBackground;
2869 }
2870
2871 __hostdev__ bool isActive(const CoordType& ijk) const
2872 {
2873 if (const Tile* tile = this->findTile(ijk)) {
2874 return tile->isChild() ? this->getChild(tile)->isActive(ijk) : tile->state;
2875 }
2876 return false;
2877 }
2878
2879 /// @brief Return true if this RootNode is empty, i.e. contains no values or nodes
2880 __hostdev__ bool isEmpty() const { return DataType::mTableSize == uint32_t(0); }
2881
2882 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const
2883 {
2884 if (const Tile* tile = this->findTile(ijk)) {
2885 if (tile->isChild()) {
2886 const auto *child = this->getChild(tile);
2887 return child->probeValue(ijk, v);
2888 }
2889 v = tile->value;
2890 return tile->state;
2891 }
2892 v = DataType::mBackground;
2893 return false;
2894 }
2895
2896 __hostdev__ const LeafNodeType* probeLeaf(const CoordType& ijk) const
2897 {
2898 const Tile* tile = this->findTile(ijk);
2899 if (tile && tile->isChild()) {
2900 const auto *child = this->getChild(tile);
2901 return child->probeLeaf(ijk);
2902 }
2903 return nullptr;
2904 }
2905
2906private:
2907 static_assert(sizeof(DataType) % NANOVDB_DATA_ALIGNMENT == 0, "sizeof(RootData) is misaligned");
2908 static_assert(sizeof(typename DataType::Tile) % NANOVDB_DATA_ALIGNMENT == 0, "sizeof(RootData::Tile) is misaligned");
2909
2910 template<typename, int, int, int>
2911 friend class ReadAccessor;
2912
2913 template<typename>
2914 friend class Tree;
2915
2916 /// @brief Private method to find a Tile of this root node by means of binary-search. This is obviously
2917 /// much slower then direct lookup into a linear array (as in the other nodes) which is exactly
2918 /// why it is important to use the ReadAccessor which amortizes this overhead by node caching and
2919 /// inverse tree traversal!
2920 __hostdev__ const Tile* findTile(const CoordType& ijk) const
2921 {
2922 const Tile* tiles = reinterpret_cast<const Tile*>(this + 1);
2923 const auto key = DataType::CoordToKey(ijk);
2924#if 1 // switch between linear and binary seach
2925 for (uint32_t i = 0; i < DataType::mTableSize; ++i) {
2926 if (tiles[i].key == key) return &tiles[i];
2927 }
2928#else// do not enable binary search if tiles are not guaranteed to be sorted!!!!!!
2929 // binary-search of pre-sorted elements
2930 int32_t low = 0, high = DataType::mTableSize; // low is inclusive and high is exclusive
2931 while (low != high) {
2932 int mid = low + ((high - low) >> 1);
2933 const Tile* tile = &tiles[mid];
2934 if (tile->key == key) {
2935 return tile;
2936 } else if (tile->key < key) {
2937 low = mid + 1;
2938 } else {
2939 high = mid;
2940 }
2941 }
2942#endif
2943 return nullptr;
2944 }
2945
2946 /// @brief Private method to return node information and update a ReadAccessor
2947 template<typename AccT>
2948 __hostdev__ typename AccT::NodeInfo getNodeInfoAndCache(const CoordType& ijk, const AccT& acc) const
2949 {
2950 using NodeInfoT = typename AccT::NodeInfo;
2951 if (const Tile* tile = this->findTile(ijk)) {
2952 if (tile->isChild()) {
2953 const auto *child = this->getChild(tile);
2954 acc.insert(ijk, child);
2955 return child->getNodeInfoAndCache(ijk, acc);
2956 }
2957 return NodeInfoT{LEVEL, ChildT::dim(), tile->value, tile->value, tile->value,
2958 0, tile->origin(), tile->origin() + CoordType(ChildT::DIM)};
2959 }
2960 return NodeInfoT{LEVEL, ChildT::dim(), this->minimum(), this->maximum(),
2961 this->average(), this->stdDeviation(), this->bbox()[0], this->bbox()[1]};
2962 }
2963
2964 /// @brief Private method to return a voxel value and update a ReadAccessor
2965 template<typename AccT>
2966 __hostdev__ ValueType getValueAndCache(const CoordType& ijk, const AccT& acc) const
2967 {
2968 if (const Tile* tile = this->findTile(ijk)) {
2969 if (tile->isChild()) {
2970 const auto *child = this->getChild(tile);
2971 acc.insert(ijk, child);
2972 return child->getValueAndCache(ijk, acc);
2973 }
2974 return tile->value;
2975 }
2976 return DataType::mBackground;
2977 }
2978
2979 template<typename AccT>
2980 __hostdev__ bool isActiveAndCache(const CoordType& ijk, const AccT& acc) const
2981 {
2982 const Tile* tile = this->findTile(ijk);
2983 if (tile && tile->isChild()) {
2984 const auto *child = this->getChild(tile);
2985 acc.insert(ijk, child);
2986 return child->isActiveAndCache(ijk, acc);
2987 }
2988 return false;
2989 }
2990
2991 template<typename AccT>
2992 __hostdev__ bool probeValueAndCache(const CoordType& ijk, ValueType& v, const AccT& acc) const
2993 {
2994 if (const Tile* tile = this->findTile(ijk)) {
2995 if (tile->isChild()) {
2996 const auto *child = this->getChild(tile);
2997 acc.insert(ijk, child);
2998 return child->probeValueAndCache(ijk, v, acc);
2999 }
3000 v = tile->value;
3001 return tile->state;
3002 }
3003 v = DataType::mBackground;
3004 return false;
3005 }
3006
3007 template<typename AccT>
3008 __hostdev__ const LeafNodeType* probeLeafAndCache(const CoordType& ijk, const AccT& acc) const
3009 {
3010 const Tile* tile = this->findTile(ijk);
3011 if (tile && tile->isChild()) {
3012 const auto *child = this->getChild(tile);
3013 acc.insert(ijk, child);
3014 return child->probeLeafAndCache(ijk, acc);
3015 }
3016 return nullptr;
3017 }
3018
3019 template<typename RayT, typename AccT>
3020 __hostdev__ uint32_t getDimAndCache(const CoordType& ijk, const RayT& ray, const AccT& acc) const
3021 {
3022 if (const Tile* tile = this->findTile(ijk)) {
3023 if (tile->isChild()) {
3024 const auto *child = this->getChild(tile);
3025 acc.insert(ijk, child);
3026 return child->getDimAndCache(ijk, ray, acc);
3027 }
3028 return 1 << ChildT::TOTAL; //tile value
3029 }
3030 return ChildNodeType::dim(); // background
3031 }
3032}; // RootNode class
3033
3034// After the RootNode the memory layout is assumed to be the sorted Tiles
3035
3036// --------------------------> InternalNode <------------------------------------
3037
3038/// @brief Struct with all the member data of the InternalNode (useful during serialization of an openvdb InternalNode)
3039///
3040/// @note No client code should (or can) interface with this struct so it can safely be ignored!
3041template<typename ChildT, uint32_t LOG2DIM>
3042 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) InternalData
3043{
3044 using ValueT = typename ChildT::ValueType;
3045 using BuildT = typename ChildT::BuildType;// in rare cases BuildType != ValueType, e.g. then BuildType = ValueMask and ValueType = bool
3046 using StatsT = typename ChildT::FloatType;
3047 using CoordT = typename ChildT::CoordType;
3048 using MaskT = typename ChildT::template MaskType<LOG2DIM>;
3049 static constexpr bool FIXED_SIZE = true;
3050
3051 union Tile
3052 {
3053 ValueT value;
3054 int64_t child;//signed 64 bit byte offset relative to the InternalData!!
3055 /// @brief This class cannot be constructed or deleted
3056 Tile() = delete;
3057 Tile(const Tile&) = delete;
3058 Tile& operator=(const Tile&) = delete;
3059 ~Tile() = delete;
3060 };
3061
3062 BBox<CoordT> mBBox; // 24B. node bounding box. |
3063 uint64_t mFlags; // 8B. node flags. | 32B aligned
3064 MaskT mValueMask; // LOG2DIM(5): 4096B, LOG2DIM(4): 512B | 32B aligned
3065 MaskT mChildMask; // LOG2DIM(5): 4096B, LOG2DIM(4): 512B | 32B aligned
3066
3067 ValueT mMinimum; // typically 4B
3068 ValueT mMaximum; // typically 4B
3069 StatsT mAverage; // typically 4B, average of all the active values in this node and its child nodes
3070 StatsT mStdDevi; // typically 4B, standard deviation of all the active values in this node and its child nodes
3071 alignas(32) Tile mTable[1u << (3 * LOG2DIM)]; // sizeof(ValueT) x (16*16*16 or 32*32*32)
3072
3073 __hostdev__ void setChild(uint32_t n, const void *ptr)
3074 {
3075 NANOVDB_ASSERT(mChildMask.isOn(n));
3076 mTable[n].child = PtrDiff(ptr, this);
3077 }
3078
3079 template <typename ValueT>
3080 __hostdev__ void setValue(uint32_t n, const ValueT &v)
3081 {
3082 NANOVDB_ASSERT(!mChildMask.isOn(n));
3083 mTable[n].value = v;
3084 }
3085
3086 /// @brief Returns a pointer to the child node at the specifed linear offset.
3087 __hostdev__ ChildT* getChild(uint32_t n)
3088 {
3089 NANOVDB_ASSERT(mChildMask.isOn(n));
3090 return PtrAdd<ChildT>(this, mTable[n].child);
3091 }
3092 __hostdev__ const ChildT* getChild(uint32_t n) const
3093 {
3094 NANOVDB_ASSERT(mChildMask.isOn(n));
3095 return PtrAdd<ChildT>(this, mTable[n].child);
3096 }
3097
3098 template <typename T>
3099 __hostdev__ void setOrigin(const T& ijk) { mBBox[0] = ijk; }
3100
3101 __hostdev__ const ValueT& getMin() const { return mMinimum; }
3102 __hostdev__ const ValueT& getMax() const { return mMaximum; }
3103 __hostdev__ const StatsT& average() const { return mAverage; }
3104 __hostdev__ const StatsT& stdDeviation() const { return mStdDevi; }
3105
3106 __hostdev__ void setMin(const ValueT& v) { mMinimum = v; }
3107 __hostdev__ void setMax(const ValueT& v) { mMaximum = v; }
3108 __hostdev__ void setAvg(const StatsT& v) { mAverage = v; }
3109 __hostdev__ void setDev(const StatsT& v) { mStdDevi = v; }
3110
3111 /// @brief This class cannot be constructed or deleted
3112 InternalData() = delete;
3113 InternalData(const InternalData&) = delete;
3114 InternalData& operator=(const InternalData&) = delete;
3115 ~InternalData() = delete;
3116}; // InternalData
3117
3118/// @brief Internal nodes of a VDB treedim(),
3119template<typename ChildT, uint32_t Log2Dim = ChildT::LOG2DIM + 1>
3120 class InternalNode : private InternalData<ChildT, Log2Dim>
3121{
3122public:
3123 using DataType = InternalData<ChildT, Log2Dim>;
3124 using ValueType = typename DataType::ValueT;
3125 using FloatType = typename DataType::StatsT;
3126 using BuildType = typename DataType::BuildT; // in rare cases BuildType != ValueType, e.g. then BuildType = ValueMask and ValueType = bool
3127 using LeafNodeType = typename ChildT::LeafNodeType;
3128 using ChildNodeType = ChildT;
3129 using CoordType = typename ChildT::CoordType;
3130 static constexpr bool FIXED_SIZE = DataType::FIXED_SIZE;
3131 template<uint32_t LOG2>
3132 using MaskType = typename ChildT::template MaskType<LOG2>;
3133
3134 static constexpr uint32_t LOG2DIM = Log2Dim;
3135 static constexpr uint32_t TOTAL = LOG2DIM + ChildT::TOTAL; // dimension in index space
3136 static constexpr uint32_t DIM = 1u << TOTAL; // number of voxels along each axis of this node
3137 static constexpr uint32_t SIZE = 1u << (3 * LOG2DIM); // number of tile values (or child pointers)
3138 static constexpr uint32_t MASK = (1u << TOTAL) - 1u;
3139 static constexpr uint32_t LEVEL = 1 + ChildT::LEVEL; // level 0 = leaf
3140 static constexpr uint64_t NUM_VALUES = uint64_t(1) << (3 * TOTAL); // total voxel count represented by this node
3141
3142 /// @brief This class cannot be constructed or deleted
3143 InternalNode() = delete;
3144 InternalNode(const InternalNode&) = delete;
3145 InternalNode& operator=(const InternalNode&) = delete;
3146 ~InternalNode() = delete;
3147
3148 __hostdev__ DataType* data() { return reinterpret_cast<DataType*>(this); }
3149
3150 __hostdev__ const DataType* data() const { return reinterpret_cast<const DataType*>(this); }
3151
3152 /// @brief Return the dimension, in voxel units, of this internal node (typically 8*16 or 8*16*32)
3153 __hostdev__ static uint32_t dim() { return 1u << TOTAL; }
3154
3155 /// @brief Return memory usage in bytes for the class
3156 __hostdev__ static size_t memUsage() { return sizeof(DataType); }
3157
3158 /// @brief Return a const reference to the bit mask of active voxels in this internal node
3159 __hostdev__ const MaskType<LOG2DIM>& valueMask() const { return DataType::mValueMask; }
3160
3161 /// @brief Return a const reference to the bit mask of child nodes in this internal node
3162 __hostdev__ const MaskType<LOG2DIM>& childMask() const { return DataType::mChildMask; }
3163
3164 /// @brief Return the origin in index space of this leaf node
3165 __hostdev__ CoordType origin() const { return DataType::mBBox.min() & ~MASK; }
3166
3167 /// @brief Return a const reference to the minimum active value encoded in this internal node and any of its child nodes
3168 __hostdev__ const ValueType& minimum() const { return this->getMin(); }
3169
3170 /// @brief Return a const reference to the maximum active value encoded in this internal node and any of its child nodes
3171 __hostdev__ const ValueType& maximum() const { return this->getMax(); }
3172
3173 /// @brief Return a const reference to the average of all the active values encoded in this internal node and any of its child nodes
3174 __hostdev__ const FloatType& average() const { return DataType::mAverage; }
3175
3176 /// @brief Return the variance of all the active values encoded in this internal node and any of its child nodes
3177 __hostdev__ FloatType variance() const { return DataType::mStdDevi*DataType::mStdDevi; }
3178
3179 /// @brief Return a const reference to the standard deviation of all the active values encoded in this internal node and any of its child nodes
3180 __hostdev__ const FloatType& stdDeviation() const { return DataType::mStdDevi; }
3181
3182 /// @brief Return a const reference to the bounding box in index space of active values in this internal node and any of its child nodes
3183 __hostdev__ const BBox<CoordType>& bbox() const { return DataType::mBBox; }
3184
3185 /// @brief Return the value of the given voxel
3186 __hostdev__ ValueType getValue(const CoordType& ijk) const
3187 {
3188 const uint32_t n = CoordToOffset(ijk);
3189 return DataType::mChildMask.isOn(n) ? this->getChild(n)->getValue(ijk) : DataType::mTable[n].value;
3190 }
3191
3192 __hostdev__ bool isActive(const CoordType& ijk) const
3193 {
3194 const uint32_t n = CoordToOffset(ijk);
3195 return DataType::mChildMask.isOn(n) ? this->getChild(n)->isActive(ijk) : DataType::mValueMask.isOn(n);
3196 }
3197
3198 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const
3199 {
3200 const uint32_t n = CoordToOffset(ijk);
3201 if (DataType::mChildMask.isOn(n))
3202 return this->getChild(n)->probeValue(ijk, v);
3203 v = DataType::mTable[n].value;
3204 return DataType::mValueMask.isOn(n);
3205 }
3206
3207 __hostdev__ const LeafNodeType* probeLeaf(const CoordType& ijk) const
3208 {
3209 const uint32_t n = CoordToOffset(ijk);
3210 if (DataType::mChildMask.isOn(n))
3211 return this->getChild(n)->probeLeaf(ijk);
3212 return nullptr;
3213 }
3214
3215 /// @brief Return the linear offset corresponding to the given coordinate
3216 __hostdev__ static uint32_t CoordToOffset(const CoordType& ijk)
3217 {
3218#if 0
3219 return (((ijk[0] & MASK) >> ChildT::TOTAL) << (2 * LOG2DIM)) +
3220 (((ijk[1] & MASK) >> ChildT::TOTAL) << (LOG2DIM)) +
3221 ((ijk[2] & MASK) >> ChildT::TOTAL);
3222#else
3223 return (((ijk[0] & MASK) >> ChildT::TOTAL) << (2 * LOG2DIM)) |
3224 (((ijk[1] & MASK) >> ChildT::TOTAL) << (LOG2DIM)) |
3225 ((ijk[2] & MASK) >> ChildT::TOTAL);
3226#endif
3227 }
3228
3229 /// @return the local coordinate of the n'th tile or child node
3230 __hostdev__ static Coord OffsetToLocalCoord(uint32_t n)
3231 {
3232 NANOVDB_ASSERT(n < SIZE);
3233 const uint32_t m = n & ((1 << 2 * LOG2DIM) - 1);
3234 return Coord(n >> 2 * LOG2DIM, m >> LOG2DIM, m & ((1 << LOG2DIM) - 1));
3235 }
3236
3237 /// @brief modifies local coordinates to global coordinates of a tile or child node
3238 __hostdev__ void localToGlobalCoord(Coord& ijk) const
3239 {
3240 ijk <<= ChildT::TOTAL;
3241 ijk += this->origin();
3242 }
3243
3244 __hostdev__ Coord offsetToGlobalCoord(uint32_t n) const
3245 {
3246 Coord ijk = InternalNode::OffsetToLocalCoord(n);
3247 this->localToGlobalCoord(ijk);
3248 return ijk;
3249 }
3250
3251 /// @brief Retrun true if this node or any of its child nodes contain active values
3252 __hostdev__ bool isActive() const
3253 {
3254 return DataType::mFlags & uint32_t(2);
3255 }
3256
3257private:
3258 static_assert(sizeof(DataType) % NANOVDB_DATA_ALIGNMENT == 0, "sizeof(InternalData) is misaligned");
3259 //static_assert(offsetof(DataType, mTable) % 32 == 0, "InternalData::mTable is misaligned");
3260
3261 template<typename, int, int, int>
3262 friend class ReadAccessor;
3263
3264 template<typename>
3265 friend class RootNode;
3266 template<typename, uint32_t>
3267 friend class InternalNode;
3268
3269 /// @brief Private read access method used by the ReadAccessor
3270 template<typename AccT>
3271 __hostdev__ ValueType getValueAndCache(const CoordType& ijk, const AccT& acc) const
3272 {
3273 const uint32_t n = CoordToOffset(ijk);
3274 if (!DataType::mChildMask.isOn(n))
3275 return DataType::mTable[n].value;
3276 const ChildT* child = this->getChild(n);
3277 acc.insert(ijk, child);
3278 return child->getValueAndCache(ijk, acc);
3279 }
3280
3281 template<typename AccT>
3282 __hostdev__ typename AccT::NodeInfo getNodeInfoAndCache(const CoordType& ijk, const AccT& acc) const
3283 {
3284 using NodeInfoT = typename AccT::NodeInfo;
3285 const uint32_t n = CoordToOffset(ijk);
3286 if (!DataType::mChildMask.isOn(n)) {
3287 return NodeInfoT{LEVEL, this->dim(), this->minimum(), this->maximum(), this->average(),
3288 this->stdDeviation(), this->bbox()[0], this->bbox()[1]};
3289 }
3290 const ChildT* child = this->getChild(n);
3291 acc.insert(ijk, child);
3292 return child->getNodeInfoAndCache(ijk, acc);
3293 }
3294
3295 template<typename AccT>
3296 __hostdev__ bool isActiveAndCache(const CoordType& ijk, const AccT& acc) const
3297 {
3298 const uint32_t n = CoordToOffset(ijk);
3299 if (!DataType::mChildMask.isOn(n))
3300 return DataType::mValueMask.isOn(n);
3301 const ChildT* child = this->getChild(n);
3302 acc.insert(ijk, child);
3303 return child->isActiveAndCache(ijk, acc);
3304 }
3305
3306 template<typename AccT>
3307 __hostdev__ bool probeValueAndCache(const CoordType& ijk, ValueType& v, const AccT& acc) const
3308 {
3309 const uint32_t n = CoordToOffset(ijk);
3310 if (!DataType::mChildMask.isOn(n)) {
3311 v = DataType::mTable[n].value;
3312 return DataType::mValueMask.isOn(n);
3313 }
3314 const ChildT* child = this->getChild(n);
3315 acc.insert(ijk, child);
3316 return child->probeValueAndCache(ijk, v, acc);
3317 }
3318
3319 template<typename AccT>
3320 __hostdev__ const LeafNodeType* probeLeafAndCache(const CoordType& ijk, const AccT& acc) const
3321 {
3322 const uint32_t n = CoordToOffset(ijk);
3323 if (!DataType::mChildMask.isOn(n))
3324 return nullptr;
3325 const ChildT* child = this->getChild(n);
3326 acc.insert(ijk, child);
3327 return child->probeLeafAndCache(ijk, acc);
3328 }
3329
3330 template<typename RayT, typename AccT>
3331 __hostdev__ uint32_t getDimAndCache(const CoordType& ijk, const RayT& ray, const AccT& acc) const
3332 {
3333 if (DataType::mFlags & uint32_t(1))
3334 this->dim(); //ship this node if first bit is set
3335 //if (!ray.intersects( this->bbox() )) return 1<<TOTAL;
3336
3337 const uint32_t n = CoordToOffset(ijk);
3338 if (DataType::mChildMask.isOn(n)) {
3339 const ChildT* child = this->getChild(n);
3340 acc.insert(ijk, child);
3341 return child->getDimAndCache(ijk, ray, acc);
3342 }
3343 return ChildNodeType::dim(); // tile value
3344 }
3345
3346}; // InternalNode class
3347
3348// --------------------------> LeafNode <------------------------------------
3349
3350/// @brief Stuct with all the member data of the LeafNode (useful during serialization of an openvdb LeafNode)
3351///
3352/// @note No client code should (or can) interface with this struct so it can safely be ignored!
3353template<typename ValueT, typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3354 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData
3355{
3356 static_assert(sizeof(CoordT) == sizeof(Coord), "Mismatching sizeof");
3357 static_assert(sizeof(MaskT<LOG2DIM>) == sizeof(Mask<LOG2DIM>), "Mismatching sizeof");
3358 using ValueType = ValueT;
3359 using BuildType = ValueT;
3360 using FloatType = typename FloatTraits<ValueT>::FloatType;
3361 using ArrayType = ValueT;// type used for the internal mValue array
3362 static constexpr bool FIXED_SIZE = true;
3363
3364 CoordT mBBoxMin; // 12B.
3365 uint8_t mBBoxDif[3]; // 3B.
3366 uint8_t mFlags; // 1B.
3367 MaskT<LOG2DIM> mValueMask; // LOG2DIM(3): 64B.
3368
3369 ValueType mMinimum; // typically 4B
3370 ValueType mMaximum; // typically 4B
3371 FloatType mAverage; // typically 4B, average of all the active values in this node and its child nodes
3372 FloatType mStdDevi; // typically 4B, standard deviation of all the active values in this node and its child nodes
3373 alignas(32) ValueType mValues[1u << 3 * LOG2DIM];
3374
3375 //__hostdev__ const ValueType* values() const { return mValues; }
3376 __hostdev__ ValueType getValue(uint32_t i) const { return mValues[i]; }
3377 __hostdev__ void setValueOnly(uint32_t offset, const ValueType& value) { mValues[offset] = value; }
3378 __hostdev__ void setValue(uint32_t offset, const ValueType& value)
3379 {
3380 mValueMask.setOn(offset);
3381 mValues[offset] = value;
3382 }
3383
3384 __hostdev__ ValueType getMin() const { return mMinimum; }
3385 __hostdev__ ValueType getMax() const { return mMaximum; }
3386 __hostdev__ FloatType getAvg() const { return mAverage; }
3387 __hostdev__ FloatType getDev() const { return mStdDevi; }
3388
3389 __hostdev__ void setMin(const ValueType& v) { mMinimum = v; }
3390 __hostdev__ void setMax(const ValueType& v) { mMaximum = v; }
3391 __hostdev__ void setAvg(const FloatType& v) { mAverage = v; }
3392 __hostdev__ void setDev(const FloatType& v) { mStdDevi = v; }
3393
3394 template <typename T>
3395 __hostdev__ void setOrigin(const T& ijk) { mBBoxMin = ijk; }
3396
3397 /// @brief This class cannot be constructed or deleted
3398 LeafData() = delete;
3399 LeafData(const LeafData&) = delete;
3400 LeafData& operator=(const LeafData&) = delete;
3401 ~LeafData() = delete;
3402}; // LeafData<ValueT>
3403
3404/// @brief Base-class for quantized float leaf nodes
3405template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3406 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafFnBase
3407{
3408 static_assert(sizeof(CoordT) == sizeof(Coord), "Mismatching sizeof");
3409 static_assert(sizeof(MaskT<LOG2DIM>) == sizeof(Mask<LOG2DIM>), "Mismatching sizeof");
3410 using ValueType = float;
3411 using FloatType = float;
3412
3413 CoordT mBBoxMin; // 12B.
3414 uint8_t mBBoxDif[3]; // 3B.
3415 uint8_t mFlags; // 1B.
3416 MaskT<LOG2DIM> mValueMask; // LOG2DIM(3): 64B.
3417
3418 float mMinimum; // 4B - minimum of ALL values in this node
3419 float mQuantum; // = (max - min)/15 4B
3420 uint16_t mMin, mMax, mAvg, mDev;// quantized representations of statistics of active values
3421
3422 void init(float min, float max, uint8_t bitWidth)
3423 {
3424 mMinimum = min;
3425 mQuantum = (max - min)/float((1 << bitWidth)-1);
3426 }
3427
3428 /// @brief return the quantized minimum of the active values in this node
3429 __hostdev__ float getMin() const { return mMin*mQuantum + mMinimum; }
3430
3431 /// @brief return the quantized maximum of the active values in this node
3432 __hostdev__ float getMax() const { return mMax*mQuantum + mMinimum; }
3433
3434 /// @brief return the quantized average of the active values in this node
3435 __hostdev__ float getAvg() const { return mAvg*mQuantum + mMinimum; }
3436 /// @brief return the quantized standard deviation of the active values in this node
3437
3438 /// @note 0 <= StdDev <= max-min or 0 <= StdDev/(max-min) <= 1
3439 __hostdev__ float getDev() const { return mDev*mQuantum; }
3440
3441 /// @note min <= X <= max or 0 <= (X-min)/(min-max) <= 1
3442 __hostdev__ void setMin(float min) { mMin = uint16_t((min - mMinimum)/mQuantum + 0.5f); }
3443
3444 /// @note min <= X <= max or 0 <= (X-min)/(min-max) <= 1
3445 __hostdev__ void setMax(float max) { mMax = uint16_t((max - mMinimum)/mQuantum + 0.5f); }
3446
3447 /// @note min <= avg <= max or 0 <= (avg-min)/(min-max) <= 1
3448 __hostdev__ void setAvg(float avg) { mAvg = uint16_t((avg - mMinimum)/mQuantum + 0.5f); }
3449
3450 /// @note 0 <= StdDev <= max-min or 0 <= StdDev/(max-min) <= 1
3451 __hostdev__ void setDev(float dev) { mDev = uint16_t(dev/mQuantum + 0.5f); }
3452
3453 template <typename T>
3454 __hostdev__ void setOrigin(const T& ijk) { mBBoxMin = ijk; }
3455};// LeafFnBase
3456
3457/// @brief Stuct with all the member data of the LeafNode (useful during serialization of an openvdb LeafNode)
3458///
3459/// @note No client code should (or can) interface with this struct so it can safely be ignored!
3460template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3461 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData<Fp4, CoordT, MaskT, LOG2DIM>
3462 : public LeafFnBase<CoordT, MaskT, LOG2DIM>
3463{
3464 using BaseT = LeafFnBase<CoordT, MaskT, LOG2DIM>;
3465 using BuildType = Fp4;
3466 using ArrayType = uint8_t;// type used for the internal mValue array
3467 static constexpr bool FIXED_SIZE = true;
3468 alignas(32) uint8_t mCode[1u << (3 * LOG2DIM - 1)];
3469
3470 __hostdev__ static constexpr uint8_t bitWidth() { return 4u; }
3471 __hostdev__ float getValue(uint32_t i) const
3472 {
3473#if 0
3474 const uint8_t c = mCode[i>>1];
3475 return ( (i&1) ? c >> 4 : c & uint8_t(15) )*BaseT::mQuantum + BaseT::mMinimum;
3476#else
3477 return ((mCode[i>>1] >> ((i&1)<<2)) & uint8_t(15))*BaseT::mQuantum + BaseT::mMinimum;
3478#endif
3479 }
3480
3481 /// @brief This class cannot be constructed or deleted
3482 LeafData() = delete;
3483 LeafData(const LeafData&) = delete;
3484 LeafData& operator=(const LeafData&) = delete;
3485 ~LeafData() = delete;
3486}; // LeafData<Fp4>
3487
3488template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3489 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData<Fp8, CoordT, MaskT, LOG2DIM>
3490 : public LeafFnBase<CoordT, MaskT, LOG2DIM>
3491{
3492 using BaseT = LeafFnBase<CoordT, MaskT, LOG2DIM>;
3493 using BuildType = Fp8;
3494 using ArrayType = uint8_t;// type used for the internal mValue array
3495 static constexpr bool FIXED_SIZE = true;
3496 alignas(32) uint8_t mCode[1u << 3 * LOG2DIM];
3497
3498 __hostdev__ static constexpr uint8_t bitWidth() { return 8u; }
3499 __hostdev__ float getValue(uint32_t i) const
3500 {
3501 return mCode[i]*BaseT::mQuantum + BaseT::mMinimum;// code * (max-min)/255 + min
3502 }
3503 /// @brief This class cannot be constructed or deleted
3504 LeafData() = delete;
3505 LeafData(const LeafData&) = delete;
3506 LeafData& operator=(const LeafData&) = delete;
3507 ~LeafData() = delete;
3508}; // LeafData<Fp8>
3509
3510template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3511 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData<Fp16, CoordT, MaskT, LOG2DIM>
3512 : public LeafFnBase<CoordT, MaskT, LOG2DIM>
3513{
3514 using BaseT = LeafFnBase<CoordT, MaskT, LOG2DIM>;
3515 using BuildType = Fp16;
3516 using ArrayType = uint16_t;// type used for the internal mValue array
3517 static constexpr bool FIXED_SIZE = true;
3518 alignas(32) uint16_t mCode[1u << 3 * LOG2DIM];
3519
3520 __hostdev__ static constexpr uint8_t bitWidth() { return 16u; }
3521 __hostdev__ float getValue(uint32_t i) const
3522 {
3523 return mCode[i]*BaseT::mQuantum + BaseT::mMinimum;// code * (max-min)/65535 + min
3524 }
3525
3526 /// @brief This class cannot be constructed or deleted
3527 LeafData() = delete;
3528 LeafData(const LeafData&) = delete;
3529 LeafData& operator=(const LeafData&) = delete;
3530 ~LeafData() = delete;
3531}; // LeafData<Fp16>
3532
3533template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3534 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData<FpN, CoordT, MaskT, LOG2DIM>
3535 : public LeafFnBase<CoordT, MaskT, LOG2DIM>
3536{
3537 using BaseT = LeafFnBase<CoordT, MaskT, LOG2DIM>;
3538 using BuildType = FpN;
3539 static constexpr bool FIXED_SIZE = false;
3540
3541 __hostdev__ uint8_t bitWidth() const { return 1 << (BaseT::mFlags >> 5); }// 4,8,16,32 = 2^(2,3,4,5)
3542 __hostdev__ size_t memUsage() const { return sizeof(*this) + this->bitWidth()*64; }
3543 __hostdev__ static size_t memUsage(uint32_t bitWidth) { return 96u + bitWidth*64; }
3544 __hostdev__ float getValue(uint32_t i) const
3545 {
3546#ifdef NANOVDB_FPN_BRANCHLESS// faster
3547 const int b = BaseT::mFlags >> 5;// b = 0, 1, 2, 3, 4 corresponding to 1, 2, 4, 8, 16 bits
3548#if 0// use LUT
3549 uint16_t code = reinterpret_cast<const uint16_t*>(this + 1)[i >> (4 - b)];
3550 const static uint8_t shift[5] = {15, 7, 3, 1, 0};
3551 const static uint16_t mask[5] = {1, 3, 15, 255, 65535};
3552 code >>= (i & shift[b]) << b;
3553 code &= mask[b];
3554#else// no LUT
3555 uint32_t code = reinterpret_cast<const uint32_t*>(this + 1)[i >> (5 - b)];
3556 //code >>= (i & ((16 >> b) - 1)) << b;
3557 code >>= (i & ((32 >> b) - 1)) << b;
3558 code &= (1 << (1 << b)) - 1;
3559#endif
3560#else// use branched version (slow)
3561 float code;
3562 auto *values = reinterpret_cast<const uint8_t*>(this+1);
3563 switch (BaseT::mFlags >> 5) {
3564 case 0u:// 1 bit float
3565 code = float((values[i>>3] >> (i&7) ) & uint8_t(1));
3566 break;
3567 case 1u:// 2 bits float
3568 code = float((values[i>>2] >> ((i&3)<<1)) & uint8_t(3));
3569 break;
3570 case 2u:// 4 bits float
3571 code = float((values[i>>1] >> ((i&1)<<2)) & uint8_t(15));
3572 break;
3573 case 3u:// 8 bits float
3574 code = float(values[i]);
3575 break;
3576 default:// 16 bits float
3577 code = float(reinterpret_cast<const uint16_t*>(values)[i]);
3578 }
3579#endif
3580 return float(code) * BaseT::mQuantum + BaseT::mMinimum;// code * (max-min)/UNITS + min
3581 }
3582
3583 /// @brief This class cannot be constructed or deleted
3584 LeafData() = delete;
3585 LeafData(const LeafData&) = delete;
3586 LeafData& operator=(const LeafData&) = delete;
3587 ~LeafData() = delete;
3588}; // LeafData<FpN>
3589
3590// Partial template specialization of LeafData with bool
3591template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3592 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData<bool, CoordT, MaskT, LOG2DIM>
3593{
3594 static_assert(sizeof(CoordT) == sizeof(Coord), "Mismatching sizeof");
3595 static_assert(sizeof(MaskT<LOG2DIM>) == sizeof(Mask<LOG2DIM>), "Mismatching sizeof");
3596 using ValueType = bool;
3597 using BuildType = bool;
3598 using FloatType = bool;// dummy value type
3599 using ArrayType = MaskT<LOG2DIM>;// type used for the internal mValue array
3600 static constexpr bool FIXED_SIZE = true;
3601
3602 CoordT mBBoxMin; // 12B.
3603 uint8_t mBBoxDif[3]; // 3B.
3604 uint8_t mFlags; // 1B.
3605 MaskT<LOG2DIM> mValueMask; // LOG2DIM(3): 64B.
3606 MaskT<LOG2DIM> mValues; // LOG2DIM(3): 64B.
3607
3608 //__hostdev__ const ValueType* values() const { return nullptr; }
3609 __hostdev__ bool getValue(uint32_t i) const { return mValues.isOn(i); }
3610 __hostdev__ bool getMin() const { return false; }// dummy
3611 __hostdev__ bool getMax() const { return false; }// dummy
3612 __hostdev__ bool getAvg() const { return false; }// dummy
3613 __hostdev__ bool getDev() const { return false; }// dummy
3614 __hostdev__ void setValue(uint32_t offset, bool v)
3615 {
3616 mValueMask.setOn(offset);
3617 mValues.set(offset, v);
3618 }
3619
3620 __hostdev__ void setMin(const bool&) {}// no-op
3621 __hostdev__ void setMax(const bool&) {}// no-op
3622 __hostdev__ void setAvg(const bool&) {}// no-op
3623 __hostdev__ void setDev(const bool&) {}// no-op
3624
3625 template <typename T>
3626 __hostdev__ void setOrigin(const T& ijk) { mBBoxMin = ijk; }
3627
3628 /// @brief This class cannot be constructed or deleted
3629 LeafData() = delete;
3630 LeafData(const LeafData&) = delete;
3631 LeafData& operator=(const LeafData&) = delete;
3632 ~LeafData() = delete;
3633}; // LeafData<bool>
3634
3635// Partial template specialization of LeafData with ValueMask
3636template<typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3637 struct NANOVDB_ALIGN(NANOVDB_DATA_ALIGNMENT) LeafData<ValueMask, CoordT, MaskT, LOG2DIM>
3638{
3639 static_assert(sizeof(CoordT) == sizeof(Coord), "Mismatching sizeof");
3640 static_assert(sizeof(MaskT<LOG2DIM>) == sizeof(Mask<LOG2DIM>), "Mismatching sizeof");
3641 using ValueType = bool;
3642 using BuildType = ValueMask;
3643 using FloatType = bool;// dummy value type
3644 using ArrayType = void;// type used for the internal mValue array - void means missing
3645 static constexpr bool FIXED_SIZE = true;
3646
3647 CoordT mBBoxMin; // 12B.
3648 uint8_t mBBoxDif[3]; // 3B.
3649 uint8_t mFlags; // 1B.
3650 MaskT<LOG2DIM> mValueMask; // LOG2DIM(3): 64B.
3651
3652 //__hostdev__ const ValueType* values() const { return nullptr; }
3653 __hostdev__ bool getValue(uint32_t i) const { return mValueMask.isOn(i); }
3654 __hostdev__ bool getMin() const { return false; }// dummy
3655 __hostdev__ bool getMax() const { return false; }// dummy
3656 __hostdev__ bool getAvg() const { return false; }// dummy
3657 __hostdev__ bool getDev() const { return false; }// dummy
3658 __hostdev__ void setValue(uint32_t offset, bool)
3659 {
3660 mValueMask.setOn(offset);
3661 }
3662
3663 __hostdev__ void setMin(const ValueType&) {}// no-op
3664 __hostdev__ void setMax(const ValueType&) {}// no-op
3665 __hostdev__ void setAvg(const FloatType&) {}// no-op
3666 __hostdev__ void setDev(const FloatType&) {}// no-op
3667
3668 template <typename T>
3669 __hostdev__ void setOrigin(const T& ijk) { mBBoxMin = ijk; }
3670
3671 /// @brief This class cannot be constructed or deleted
3672 LeafData() = delete;
3673 LeafData(const LeafData&) = delete;
3674 LeafData& operator=(const LeafData&) = delete;
3675 ~LeafData() = delete;
3676}; // LeafData<ValueMask>
3677
3678/// @brief Leaf nodes of the VDB tree. (defaults to 8x8x8 = 512 voxels)
3679template<typename BuildT,
3680 typename CoordT = Coord,
3681 template<uint32_t> class MaskT = Mask,
3682 uint32_t Log2Dim = 3>
3683 class LeafNode : private LeafData<BuildT, CoordT, MaskT, Log2Dim>
3684{
3685public:
3686 struct ChildNodeType
3687 {
3688 __hostdev__ static uint32_t dim() { return 1u; }
3689 }; // Voxel
3690 using LeafNodeType = LeafNode<BuildT, CoordT, MaskT, Log2Dim>;
3691 using DataType = LeafData<BuildT, CoordT, MaskT, Log2Dim>;
3692 using ValueType = typename DataType::ValueType;
3693 using FloatType = typename DataType::FloatType;
3694 using BuildType = typename DataType::BuildType;
3695 using CoordType = CoordT;
3696 static constexpr bool FIXED_SIZE = DataType::FIXED_SIZE;
3697 template<uint32_t LOG2>
3698 using MaskType = MaskT<LOG2>;
3699
3700 static_assert(is_same<ValueType,typename BuildToValueMap<BuildType>::Type>::value, "Mismatching BuildType");
3701 static constexpr uint32_t LOG2DIM = Log2Dim;
3702 static constexpr uint32_t TOTAL = LOG2DIM; // needed by parent nodes
3703 static constexpr uint32_t DIM = 1u << TOTAL; // number of voxels along each axis of this node
3704 static constexpr uint32_t SIZE = 1u << 3 * LOG2DIM; // total number of voxels represented by this node
3705 static constexpr uint32_t MASK = (1u << LOG2DIM) - 1u; // mask for bit operations
3706 static constexpr uint32_t LEVEL = 0; // level 0 = leaf
3707 static constexpr uint64_t NUM_VALUES = uint64_t(1) << (3 * TOTAL); // total voxel count represented by this node
3708
3709 __hostdev__ DataType* data() { return reinterpret_cast<DataType*>(this); }
3710
3711 __hostdev__ const DataType* data() const { return reinterpret_cast<const DataType*>(this); }
3712
3713 /// @brief Return a const reference to the bit mask of active voxels in this leaf node
3714 __hostdev__ const MaskType<LOG2DIM>& valueMask() const { return DataType::mValueMask; }
3715
3716 /// @brief Return a const reference to the minimum active value encoded in this leaf node
3717 __hostdev__ ValueType minimum() const { return this->getMin(); }
3718
3719 /// @brief Return a const reference to the maximum active value encoded in this leaf node
3720 __hostdev__ ValueType maximum() const { return this->getMax(); }
3721
3722 /// @brief Return a const reference to the average of all the active values encoded in this leaf node
3723 __hostdev__ FloatType average() const { return DataType::getAvg(); }
3724
3725 /// @brief Return the variance of all the active values encoded in this leaf node
3726 __hostdev__ FloatType variance() const { return DataType::getDev()*DataType::getDev(); }
3727
3728 /// @brief Return a const reference to the standard deviation of all the active values encoded in this leaf node
3729 __hostdev__ FloatType stdDeviation() const { return DataType::getDev(); }
3730
3731 __hostdev__ uint8_t flags() const { return DataType::mFlags; }
3732
3733 /// @brief Return the origin in index space of this leaf node
3734 __hostdev__ CoordT origin() const { return DataType::mBBoxMin & ~MASK; }
3735
3736 __hostdev__ static CoordT OffsetToLocalCoord(uint32_t n)
3737 {
3738 NANOVDB_ASSERT(n < SIZE);
3739 const uint32_t m = n & ((1 << 2 * LOG2DIM) - 1);
3740 return CoordT(n >> 2 * LOG2DIM, m >> LOG2DIM, m & MASK);
3741 }
3742
3743 /// @brief Converts (in place) a local index coordinate to a global index coordinate
3744 __hostdev__ void localToGlobalCoord(Coord& ijk) const { ijk += this->origin(); }
3745
3746 __hostdev__ CoordT offsetToGlobalCoord(uint32_t n) const
3747 {
3748 return OffsetToLocalCoord(n) + this->origin();
3749 }
3750
3751 /// @brief Return the dimension, in index space, of this leaf node (typically 8 as for openvdb leaf nodes!)
3752 __hostdev__ static uint32_t dim() { return 1u << LOG2DIM; }
3753
3754 /// @brief Return the bounding box in index space of active values in this leaf node
3755 __hostdev__ BBox<CoordT> bbox() const
3756 {
3757 BBox<CoordT> bbox(DataType::mBBoxMin, DataType::mBBoxMin);
3758 if ( this->isActive() ) {
3759 bbox.max()[0] += DataType::mBBoxDif[0];
3760 bbox.max()[1] += DataType::mBBoxDif[1];
3761 bbox.max()[2] += DataType::mBBoxDif[2];
3762 } else {// very rare case
3763 bbox = BBox<CoordT>();// invalid
3764 }
3765 return bbox;
3766 }
3767
3768 /// @brief Return the total number of voxels (e.g. values) encoded in this leaf node
3769 __hostdev__ static uint32_t voxelCount() { return 1u << (3 * LOG2DIM); }
3770
3771 /// @brief return memory usage in bytes for the class
3772 __hostdev__ static uint64_t memUsage() { return sizeof(LeafNodeType); }
3773
3774 /// @brief This class cannot be constructed or deleted
3775 LeafNode() = delete;
3776 LeafNode(const LeafNode&) = delete;
3777 LeafNode& operator=(const LeafNode&) = delete;
3778 ~LeafNode() = delete;
3779
3780 /// @brief Return the voxel value at the given offset.
3781 __hostdev__ ValueType getValue(uint32_t offset) const { return DataType::getValue(offset); }
3782
3783 /// @brief Return the voxel value at the given coordinate.
3784 __hostdev__ ValueType getValue(const CoordT& ijk) const { return DataType::getValue(CoordToOffset(ijk)); }
3785
3786 /// @brief Sets the value at the specified location and activate its state.
3787 ///
3788 /// @note This is safe since it does not change the topology of the tree (unlike setValue methods on the other nodes)
3789 __hostdev__ void setValue(const CoordT& ijk, const ValueType& v) { DataType::setValue(CoordToOffset(ijk), v); }
3790
3791 /// @brief Sets the value at the specified location but leaves its state unchanged.
3792 ///
3793 /// @note This is safe since it does not change the topology of the tree (unlike setValue methods on the other nodes)
3794 __hostdev__ void setValueOnly(uint32_t offset, const ValueType& v) { DataType::setValueOnly(offset, v); }
3795 __hostdev__ void setValueOnly(const CoordT& ijk, const ValueType& v) { DataType::setValueOnly(CoordToOffset(ijk), v); }
3796
3797 /// @brief Return @c true if the voxel value at the given coordinate is active.
3798 __hostdev__ bool isActive(const CoordT& ijk) const { return DataType::mValueMask.isOn(CoordToOffset(ijk)); }
3799 __hostdev__ bool isActive(uint32_t n) const { return DataType::mValueMask.isOn(n); }
3800
3801 /// @brief Return @c true if any of the voxel value are active in this leaf node.
3802 __hostdev__ bool isActive() const
3803 {
3804 NANOVDB_ASSERT( bool(DataType::mFlags & uint8_t(2)) != DataType::mValueMask.isOff() );
3805 return DataType::mFlags & uint8_t(2);
3806 }
3807
3808
3809 /// @brief Return @c true if the voxel value at the given coordinate is active and updates @c v with the value.
3810 __hostdev__ bool probeValue(const CoordT& ijk, ValueType& v) const
3811 {
3812 const uint32_t n = CoordToOffset(ijk);
3813 v = DataType::getValue(n);
3814 return DataType::mValueMask.isOn(n);
3815 }
3816
3817 __hostdev__ const LeafNode* probeLeaf(const CoordT&) const { return this; }
3818
3819 /// @brief Return the linear offset corresponding to the given coordinate
3820 __hostdev__ static uint32_t CoordToOffset(const CoordT& ijk)
3821 {
3822 #if 0
3823 return ((ijk[0] & MASK) << (2 * LOG2DIM)) + ((ijk[1] & MASK) << LOG2DIM) + (ijk[2] & MASK);
3824 #else
3825 return ((ijk[0] & MASK) << (2 * LOG2DIM)) | ((ijk[1] & MASK) << LOG2DIM) | (ijk[2] & MASK);
3826 #endif
3827 }
3828
3829 /// @brief Updates the local bounding box of active voxels in this node.
3830 ///
3831 /// @warning It assumes that the origin and value mask have already been set.
3832 ///
3833 /// @details This method is based on few (intrinsic) bit operations and hence is relatively fast.
3834 /// However, it should only only be called of either the value mask has changed or if the
3835 /// active bounding box is still undefined. e.g. during constrution of this node.
3836 __hostdev__ void updateBBox();
3837
3838private:
3839 static_assert(sizeof(DataType) % NANOVDB_DATA_ALIGNMENT == 0, "sizeof(LeafData) is misaligned");
3840 //static_assert(offsetof(DataType, mValues) % 32 == 0, "LeafData::mValues is misaligned");
3841
3842 template<typename, int, int, int>
3843 friend class ReadAccessor;
3844
3845 template<typename>
3846 friend class RootNode;
3847 template<typename, uint32_t>
3848 friend class InternalNode;
3849
3850 /// @brief Private method to return a voxel value and update a (dummy) ReadAccessor
3851 template<typename AccT>
3852 __hostdev__ ValueType getValueAndCache(const CoordT& ijk, const AccT&) const { return this->getValue(ijk); }
3853
3854 /// @brief Return the node information.
3855 template<typename AccT>
3856 __hostdev__ typename AccT::NodeInfo getNodeInfoAndCache(const CoordType& /*ijk*/, const AccT& /*acc*/) const {
3857 using NodeInfoT = typename AccT::NodeInfo;
3858 return NodeInfoT{LEVEL, this->dim(), this->minimum(), this->maximum(),
3859 this->average(), this->stdDeviation(), this->bbox()[0], this->bbox()[1]};
3860 }
3861
3862 template<typename AccT>
3863 __hostdev__ bool isActiveAndCache(const CoordT& ijk, const AccT&) const { return this->isActive(ijk); }
3864
3865 template<typename AccT>
3866 __hostdev__ bool probeValueAndCache(const CoordT& ijk, ValueType& v, const AccT&) const { return this->probeValue(ijk, v); }
3867
3868 template<typename AccT>
3869 __hostdev__ const LeafNode* probeLeafAndCache(const CoordT&, const AccT&) const { return this; }
3870
3871 template<typename RayT, typename AccT>
3872 __hostdev__ uint32_t getDimAndCache(const CoordT&, const RayT& /*ray*/, const AccT&) const
3873 {
3874 if (DataType::mFlags & uint8_t(1))
3875 return this->dim(); // skip this node if first bit is set
3876 //if (!ray.intersects( this->bbox() )) return 1 << LOG2DIM;
3877 return ChildNodeType::dim();
3878 }
3879
3880}; // LeafNode class
3881
3882template<typename ValueT, typename CoordT, template<uint32_t> class MaskT, uint32_t LOG2DIM>
3883 inline void LeafNode<ValueT, CoordT, MaskT, LOG2DIM>::updateBBox()
3884{
3885 static_assert(LOG2DIM == 3, "LeafNode::updateBBox: only supports LOGDIM = 3!");
3886 if (!this->isActive()) return;
3887 auto update = [&](uint32_t min, uint32_t max, int axis) {
3888 NANOVDB_ASSERT(min <= max && max < 8);
3889 DataType::mBBoxMin[axis] = (DataType::mBBoxMin[axis] & ~MASK) + int(min);
3890 DataType::mBBoxDif[axis] = uint8_t(max - min);
3891 };
3892 uint64_t word64 = DataType::mValueMask.template getWord<uint64_t>(0);
3893 uint32_t Xmin = word64 ? 0u : 8u;
3894 uint32_t Xmax = Xmin;
3895 for (int i = 1; i < 8; ++i) { // last loop over 8 64 words
3896 if (uint64_t w = DataType::mValueMask.template getWord<uint64_t>(i)) { // skip if word has no set bits
3897 word64 |= w; // union 8 x 64 bits words into one 64 bit word
3898 if (Xmin == 8) {
3899 Xmin = i; // only set once
3900 }
3901 Xmax = i;
3902 }
3903 }
3904 NANOVDB_ASSERT(word64);
3905 update(Xmin, Xmax, 0);
3906 update(FindLowestOn(word64) >> 3, FindHighestOn(word64) >> 3, 1);
3907 const uint32_t *p = reinterpret_cast<const uint32_t*>(&word64), word32 = p[0] | p[1];
3908 const uint16_t *q = reinterpret_cast<const uint16_t*>(&word32), word16 = q[0] | q[1];
3909 const uint8_t *b = reinterpret_cast<const uint8_t* >(&word16), byte = b[0] | b[1];
3910 NANOVDB_ASSERT(byte);
3911 update(FindLowestOn(static_cast<uint32_t>(byte)), FindHighestOn(static_cast<uint32_t>(byte)), 2);
3912} // LeafNode::updateBBox
3913
3914// --------------------------> Template specializations and traits <------------------------------------
3915
3916/// @brief Template specializations to the default configuration used in OpenVDB:
3917/// Root -> 32^3 -> 16^3 -> 8^3
3918template<typename BuildT>
3919 using NanoLeaf = LeafNode<BuildT, Coord, Mask, 3>;
3920template<typename BuildT>
3921 using NanoLower = InternalNode<NanoLeaf<BuildT>, 4>;
3922template<typename BuildT>
3923 using NanoUpper = InternalNode<NanoLower<BuildT>, 5>;
3924template<typename BuildT>
3925 using NanoRoot = RootNode<NanoUpper<BuildT>>;
3926template<typename BuildT>
3927 using NanoTree = Tree<NanoRoot<BuildT>>;
3928template<typename BuildT>
3929 using NanoGrid = Grid<NanoTree<BuildT>>;
3930
3931/// @brief Trait to map from LEVEL to node type
3932template<typename BuildT, int LEVEL>
3933 struct NanoNode;
3934
3935// Partial template specialization of above Node struct
3936template<typename BuildT>
3937 struct NanoNode<BuildT, 0>
3938{
3939 using Type = NanoLeaf<BuildT>;
3940 using type = NanoLeaf<BuildT>;
3941};
3942template<typename BuildT>
3943 struct NanoNode<BuildT, 1>
3944{
3945 using Type = NanoLower<BuildT>;
3946 using type = NanoLower<BuildT>;
3947};
3948template<typename BuildT>
3949 struct NanoNode<BuildT, 2>
3950{
3951 using Type = NanoUpper<BuildT>;
3952 using type = NanoUpper<BuildT>;
3953};
3954template<typename BuildT>
3955 struct NanoNode<BuildT, 3>
3956{
3957 using Type = NanoRoot<BuildT>;
3958 using type = NanoRoot<BuildT>;
3959};
3960
3961 using FloatTree = NanoTree<float>;
3962 using DoubleTree = NanoTree<double>;
3963 using Int32Tree = NanoTree<int32_t>;
3964 using UInt32Tree = NanoTree<uint32_t>;
3965 using Int64Tree = NanoTree<int64_t>;
3966 using Vec3fTree = NanoTree<Vec3f>;
3967 using Vec3dTree = NanoTree<Vec3d>;
3968 using Vec4fTree = NanoTree<Vec4f>;
3969 using Vec4dTree = NanoTree<Vec4d>;
3970 using Vec3ITree = NanoTree<Vec3i>;
3971 using MaskTree = NanoTree<ValueMask>;
3972 using BoolTree = NanoTree<bool>;
3973
3974 using FloatGrid = Grid<FloatTree>;
3975 using DoubleGrid = Grid<DoubleTree>;
3976 using Int32Grid = Grid<Int32Tree>;
3977 using UInt32Grid = Grid<UInt32Tree>;
3978 using Int64Grid = Grid<Int64Tree>;
3979 using Vec3fGrid = Grid<Vec3fTree>;
3980 using Vec3dGrid = Grid<Vec3dTree>;
3981 using Vec4fGrid = Grid<Vec4fTree>;
3982 using Vec4dGrid = Grid<Vec4dTree>;
3983 using Vec3IGrid = Grid<Vec3ITree>;
3984 using MaskGrid = Grid<MaskTree>;
3985 using BoolGrid = Grid<BoolTree>;
3986
3987// --------------------------> ReadAccessor <------------------------------------
3988
3989/// @brief A read-only value accessor with three levels of node caching. This allows for
3990/// inverse tree traversal during lookup, which is on average significantly faster
3991/// than calling the equivalent method on the tree (i.e. top-down traversal).
3992///
3993/// @note By virtue of the fact that a value accessor accelerates random access operations
3994/// by re-using cached access patterns, this access should be reused for multiple access
3995/// operations. In other words, never create an instance of this accessor for a single
3996/// acccess only. In general avoid single access operations with this accessor, and
3997/// if that is not possible call the corresponding method on the tree instead.
3998///
3999/// @warning Since this ReadAccessor internally caches raw pointers to the nodes of the tree
4000/// structure, it is not safe to copy between host and device, or even to share among
4001/// multiple threads on the same host or device. However, it is light-weight so simple
4002/// instantiate one per thread (on the host and/or device).
4003///
4004/// @details Used to accelerated random access into a VDB tree. Provides on average
4005/// O(1) random access operations by means of inverse tree traversal,
4006/// which amortizes the non-const time complexity of the root node.
4007
4008template <typename BuildT>
4009 class ReadAccessor<BuildT, -1, -1, -1>
4010{
4011 using RootT = NanoRoot<BuildT>; // root node
4012 using LeafT = NanoLeaf<BuildT>; // Leaf node
4013 using FloatType = typename RootT::FloatType;
4014 using CoordValueType = typename RootT::CoordType::ValueType;
4015
4016 mutable const RootT* mRoot; // 8 bytes (mutable to allow for access methods to be const)
4017public:
4018 using ValueType = typename RootT::ValueType;
4019 using CoordType = typename RootT::CoordType;
4020
4021 static const int CacheLevels = 0;
4022
4023 struct NodeInfo {
4024 uint32_t mLevel; // 4B
4025 uint32_t mDim; // 4B
4026 ValueType mMinimum; // typically 4B
4027 ValueType mMaximum; // typically 4B
4028 FloatType mAverage; // typically 4B
4029 FloatType mStdDevi; // typically 4B
4030 CoordType mBBoxMin; // 3*4B
4031 CoordType mBBoxMax; // 3*4B
4032 };
4033
4034 /// @brief Constructor from a root node
4035 __hostdev__ ReadAccessor(const RootT& root) : mRoot{&root} {}
4036
4037 __hostdev__ const RootT& root() const { return *mRoot; }
4038
4039 /// @brief Defaults constructors
4040 ReadAccessor(const ReadAccessor&) = default;
4041 ~ReadAccessor() = default;
4042 ReadAccessor& operator=(const ReadAccessor&) = default;
4043
4044 __hostdev__ ValueType getValue(const CoordType& ijk) const
4045 {
4046 return mRoot->getValueAndCache(ijk, *this);
4047 }
4048
4049 __hostdev__ NodeInfo getNodeInfo(const CoordType& ijk) const
4050 {
4051 return mRoot->getNodeInfoAndCache(ijk, *this);
4052 }
4053
4054 __hostdev__ bool isActive(const CoordType& ijk) const
4055 {
4056 return mRoot->isActiveAndCache(ijk, *this);
4057 }
4058
4059 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const
4060 {
4061 return mRoot->probeValueAndCache(ijk, v, *this);
4062 }
4063
4064 __hostdev__ const LeafT* probeLeaf(const CoordType& ijk) const
4065 {
4066 return mRoot->probeLeafAndCache(ijk, *this);
4067 }
4068
4069 template<typename RayT>
4070 __hostdev__ uint32_t getDim(const CoordType& ijk, const RayT& ray) const
4071 {
4072 return mRoot->getDimAndCache(ijk, ray, *this);
4073 }
4074
4075private:
4076 /// @brief Allow nodes to insert themselves into the cache.
4077 template<typename>
4078 friend class RootNode;
4079 template<typename, uint32_t>
4080 friend class InternalNode;
4081 template<typename, typename, template<uint32_t> class, uint32_t>
4082 friend class LeafNode;
4083
4084 /// @brief No-op
4085 template<typename NodeT>
4086 __hostdev__ void insert(const CoordType&, const NodeT*) const {}
4087}; // ReadAccessor<ValueT, -1, -1, -1> class
4088
4089/// @brief Node caching at a single tree level
4090template <typename BuildT, int LEVEL0>
4091 class ReadAccessor<BuildT, LEVEL0, -1, -1>//e.g. 0, 1, 2
4092{
4093 static_assert(LEVEL0 >= 0 && LEVEL0 <= 2, "LEVEL0 should be 0, 1, or 2");
4094
4095 using TreeT = NanoTree<BuildT>;
4096 using RootT = NanoRoot<BuildT>; // root node
4097 using LeafT = NanoLeaf<BuildT>; // Leaf node
4098 using NodeT = typename NodeTrait<TreeT, LEVEL0>::type;
4099 using CoordT = typename RootT::CoordType;
4100 using ValueT = typename RootT::ValueType;
4101
4102 using FloatType = typename RootT::FloatType;
4103 using CoordValueType = typename RootT::CoordT::ValueType;
4104
4105 // All member data are mutable to allow for access methods to be const
4106 mutable CoordT mKey; // 3*4 = 12 bytes
4107 mutable const RootT* mRoot; // 8 bytes
4108 mutable const NodeT* mNode; // 8 bytes
4109
4110public:
4111 using ValueType = ValueT;
4112 using CoordType = CoordT;
4113
4114 static const int CacheLevels = 1;
4115
4116 using NodeInfo = typename ReadAccessor<ValueT, -1, -1, -1>::NodeInfo;
4117
4118 /// @brief Constructor from a root node
4119 __hostdev__ ReadAccessor(const RootT& root)
4120 : mKey(CoordType::max())
4121 , mRoot(&root)
4122 , mNode(nullptr)
4123 {
4124 }
4125
4126 __hostdev__ const RootT& root() const { return *mRoot; }
4127
4128 /// @brief Defaults constructors
4129 ReadAccessor(const ReadAccessor&) = default;
4130 ~ReadAccessor() = default;
4131 ReadAccessor& operator=(const ReadAccessor&) = default;
4132
4133 __hostdev__ bool isCached(const CoordType& ijk) const
4134 {
4135 return (ijk[0] & int32_t(~NodeT::MASK)) == mKey[0] &&
4136 (ijk[1] & int32_t(~NodeT::MASK)) == mKey[1] &&
4137 (ijk[2] & int32_t(~NodeT::MASK)) == mKey[2];
4138 }
4139
4140 __hostdev__ ValueType getValue(const CoordType& ijk) const
4141 {
4142 if (this->isCached(ijk)) {
4143 return mNode->getValueAndCache(ijk, *this);
4144 }
4145 return mRoot->getValueAndCache(ijk, *this);
4146 }
4147
4148 __hostdev__ NodeInfo getNodeInfo(const CoordType& ijk) const
4149 {
4150 if (this->isCached(ijk)) {
4151 return mNode->getNodeInfoAndCache(ijk, *this);
4152 }
4153 return mRoot->getNodeInfoAndCache(ijk, *this);
4154 }
4155
4156 __hostdev__ bool isActive(const CoordType& ijk) const
4157 {
4158 if (this->isCached(ijk)) {
4159 return mNode->isActiveAndCache(ijk, *this);
4160 }
4161 return mRoot->isActiveAndCache(ijk, *this);
4162 }
4163
4164 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const
4165 {
4166 if (this->isCached(ijk)) {
4167 return mNode->probeValueAndCache(ijk, v, *this);
4168 }
4169 return mRoot->probeValueAndCache(ijk, v, *this);
4170 }
4171
4172 __hostdev__ const LeafT* probeLeaf(const CoordType& ijk) const
4173 {
4174 if (this->isCached(ijk)) {
4175 return mNode->probeLeafAndCache(ijk, *this);
4176 }
4177 return mRoot->probeLeafAndCache(ijk, *this);
4178 }
4179
4180 template<typename RayT>
4181 __hostdev__ uint32_t getDim(const CoordType& ijk, const RayT& ray) const
4182 {
4183 if (this->isCached(ijk)) {
4184 return mNode->getDimAndCache(ijk, ray, *this);
4185 }
4186 return mRoot->getDimAndCache(ijk, ray, *this);
4187 }
4188
4189private:
4190 /// @brief Allow nodes to insert themselves into the cache.
4191 template<typename>
4192 friend class RootNode;
4193 template<typename, uint32_t>
4194 friend class InternalNode;
4195 template<typename, typename, template<uint32_t> class, uint32_t>
4196 friend class LeafNode;
4197
4198 /// @brief Inserts a leaf node and key pair into this ReadAccessor
4199 __hostdev__ void insert(const CoordType& ijk, const NodeT* node) const
4200 {
4201 mKey = ijk & ~NodeT::MASK;
4202 mNode = node;
4203 }
4204
4205 // no-op
4206 template<typename OtherNodeT>
4207 __hostdev__ void insert(const CoordType&, const OtherNodeT*) const {}
4208
4209}; // ReadAccessor<ValueT, LEVEL0>
4210
4211template <typename BuildT, int LEVEL0, int LEVEL1>
4212 class ReadAccessor<BuildT, LEVEL0, LEVEL1, -1>//e.g. (0,1), (1,2), (0,2)
4213{
4214 static_assert(LEVEL0 >= 0 && LEVEL0 <= 2, "LEVEL0 must be 0, 1, 2");
4215 static_assert(LEVEL1 >= 0 && LEVEL1 <= 2, "LEVEL1 must be 0, 1, 2");
4216 static_assert(LEVEL0 < LEVEL1, "Level 0 must be lower than level 1");
4217 using TreeT = NanoTree<BuildT>;
4218 using RootT = NanoRoot<BuildT>;
4219 using LeafT = NanoLeaf<BuildT>;
4220 using Node1T = typename NodeTrait<TreeT, LEVEL0>::type;
4221 using Node2T = typename NodeTrait<TreeT, LEVEL1>::type;
4222 using CoordT = typename RootT::CoordType;
4223 using ValueT = typename RootT::ValueType;
4224 using FloatType = typename RootT::FloatType;
4225 using CoordValueType = typename RootT::CoordT::ValueType;
4226
4227 // All member data are mutable to allow for access methods to be const
4228#ifdef USE_SINGLE_ACCESSOR_KEY // 44 bytes total
4229 mutable CoordT mKey; // 3*4 = 12 bytes
4230#else // 68 bytes total
4231 mutable CoordT mKeys[2]; // 2*3*4 = 24 bytes
4232#endif
4233 mutable const RootT* mRoot;
4234 mutable const Node1T* mNode1;
4235 mutable const Node2T* mNode2;
4236
4237public:
4238 using ValueType = ValueT;
4239 using CoordType = CoordT;
4240
4241 static const int CacheLevels = 2;
4242
4243 using NodeInfo = typename ReadAccessor<ValueT,-1,-1,-1>::NodeInfo;
4244
4245 /// @brief Constructor from a root node
4246 __hostdev__ ReadAccessor(const RootT& root)
4247#ifdef USE_SINGLE_ACCESSOR_KEY
4248 : mKey(CoordType::max())
4249#else
4250 : mKeys{CoordType::max(), CoordType::max()}
4251#endif
4252 , mRoot(&root)
4253 , mNode1(nullptr)
4254 , mNode2(nullptr)
4255 {
4256 }
4257
4258 __hostdev__ const RootT& root() const { return *mRoot; }
4259
4260 /// @brief Defaults constructors
4261 ReadAccessor(const ReadAccessor&) = default;
4262 ~ReadAccessor() = default;
4263 ReadAccessor& operator=(const ReadAccessor&) = default;
4264
4265#ifdef USE_SINGLE_ACCESSOR_KEY
4266 __hostdev__ bool isCached1(CoordValueType dirty) const
4267 {
4268 if (!mNode1)
4269 return false;
4270 if (dirty & int32_t(~Node1T::MASK)) {
4271 mNode1 = nullptr;
4272 return false;
4273 }
4274 return true;
4275 }
4276 __hostdev__ bool isCached2(CoordValueType dirty) const
4277 {
4278 if (!mNode2)
4279 return false;
4280 if (dirty & int32_t(~Node2T::MASK)) {
4281 mNode2 = nullptr;
4282 return false;
4283 }
4284 return true;
4285 }
4286 __hostdev__ CoordValueType computeDirty(const CoordType& ijk) const
4287 {
4288 return (ijk[0] ^ mKey[0]) | (ijk[1] ^ mKey[1]) | (ijk[2] ^ mKey[2]);
4289 }
4290#else
4291 __hostdev__ bool isCached1(const CoordType& ijk) const
4292 {
4293 return (ijk[0] & int32_t(~Node1T::MASK)) == mKeys[0][0] &&
4294 (ijk[1] & int32_t(~Node1T::MASK)) == mKeys[0][1] &&
4295 (ijk[2] & int32_t(~Node1T::MASK)) == mKeys[0][2];
4296 }
4297 __hostdev__ bool isCached2(const CoordType& ijk) const
4298 {
4299 return (ijk[0] & int32_t(~Node2T::MASK)) == mKeys[1][0] &&
4300 (ijk[1] & int32_t(~Node2T::MASK)) == mKeys[1][1] &&
4301 (ijk[2] & int32_t(~Node2T::MASK)) == mKeys[1][2];
4302 }
4303#endif
4304
4305 __hostdev__ ValueType getValue(const CoordType& ijk) const
4306 {
4307#ifdef USE_SINGLE_ACCESSOR_KEY
4308 const CoordValueType dirty = this->computeDirty(ijk);
4309#else
4310 auto&& dirty = ijk;
4311#endif
4312 if (this->isCached1(dirty)) {
4313 return mNode1->getValueAndCache(ijk, *this);
4314 } else if (this->isCached2(dirty)) {
4315 return mNode2->getValueAndCache(ijk, *this);
4316 }
4317 return mRoot->getValueAndCache(ijk, *this);
4318 }
4319
4320 __hostdev__ NodeInfo getNodeInfo(const CoordType& ijk) const
4321 {
4322#ifdef USE_SINGLE_ACCESSOR_KEY
4323 const CoordValueType dirty = this->computeDirty(ijk);
4324#else
4325 auto&& dirty = ijk;
4326#endif
4327 if (this->isCached1(dirty)) {
4328 return mNode1->getNodeInfoAndCache(ijk, *this);
4329 } else if (this->isCached2(dirty)) {
4330 return mNode2->getNodeInfoAndCache(ijk, *this);
4331 }
4332 return mRoot->getNodeInfoAndCache(ijk, *this);
4333 }
4334
4335 __hostdev__ bool isActive(const CoordType& ijk) const
4336 {
4337#ifdef USE_SINGLE_ACCESSOR_KEY
4338 const CoordValueType dirty = this->computeDirty(ijk);
4339#else
4340 auto&& dirty = ijk;
4341#endif
4342 if (this->isCached1(dirty)) {
4343 return mNode1->isActiveAndCache(ijk, *this);
4344 } else if (this->isCached2(dirty)) {
4345 return mNode2->isActiveAndCache(ijk, *this);
4346 }
4347 return mRoot->isActiveAndCache(ijk, *this);
4348 }
4349
4350 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const
4351 {
4352#ifdef USE_SINGLE_ACCESSOR_KEY
4353 const CoordValueType dirty = this->computeDirty(ijk);
4354#else
4355 auto&& dirty = ijk;
4356#endif
4357 if (this->isCached1(dirty)) {
4358 return mNode1->probeValueAndCache(ijk, v, *this);
4359 } else if (this->isCached2(dirty)) {
4360 return mNode2->probeValueAndCache(ijk, v, *this);
4361 }
4362 return mRoot->probeValueAndCache(ijk, v, *this);
4363 }
4364
4365 __hostdev__ const LeafT* probeLeaf(const CoordType& ijk) const
4366 {
4367#ifdef USE_SINGLE_ACCESSOR_KEY
4368 const CoordValueType dirty = this->computeDirty(ijk);
4369#else
4370 auto&& dirty = ijk;
4371#endif
4372 if (this->isCached1(dirty)) {
4373 return mNode1->probeLeafAndCache(ijk, *this);
4374 } else if (this->isCached2(dirty)) {
4375 return mNode2->probeLeafAndCache(ijk, *this);
4376 }
4377 return mRoot->probeLeafAndCache(ijk, *this);
4378 }
4379
4380 template<typename RayT>
4381 __hostdev__ uint32_t getDim(const CoordType& ijk, const RayT& ray) const
4382 {
4383#ifdef USE_SINGLE_ACCESSOR_KEY
4384 const CoordValueType dirty = this->computeDirty(ijk);
4385#else
4386 auto&& dirty = ijk;
4387#endif
4388 if (this->isCached1(dirty)) {
4389 return mNode1->getDimAndCache(ijk, ray, *this);
4390 } else if (this->isCached2(dirty)) {
4391 return mNode2->getDimAndCache(ijk, ray, *this);
4392 }
4393 return mRoot->getDimAndCache(ijk, ray, *this);
4394 }
4395
4396private:
4397 /// @brief Allow nodes to insert themselves into the cache.
4398 template<typename>
4399 friend class RootNode;
4400 template<typename, uint32_t>
4401 friend class InternalNode;
4402 template<typename, typename, template<uint32_t> class, uint32_t>
4403 friend class LeafNode;
4404
4405 /// @brief Inserts a leaf node and key pair into this ReadAccessor
4406 __hostdev__ void insert(const CoordType& ijk, const Node1T* node) const
4407 {
4408#ifdef USE_SINGLE_ACCESSOR_KEY
4409 mKey = ijk;
4410#else
4411 mKeys[0] = ijk & ~Node1T::MASK;
4412#endif
4413 mNode1 = node;
4414 }
4415 __hostdev__ void insert(const CoordType& ijk, const Node2T* node) const
4416 {
4417#ifdef USE_SINGLE_ACCESSOR_KEY
4418 mKey = ijk;
4419#else
4420 mKeys[1] = ijk & ~Node2T::MASK;
4421#endif
4422 mNode2 = node;
4423 }
4424 template <typename OtherNodeT>
4425 __hostdev__ void insert(const CoordType&, const OtherNodeT*) const {}
4426}; // ReadAccessor<BuildT, LEVEL0, LEVEL1>
4427
4428
4429/// @brief Node caching at all (three) tree levels
4430template <typename BuildT>
4431 class ReadAccessor<BuildT, 0, 1, 2>
4432{
4433 using TreeT = NanoTree<BuildT>;
4434 using RootT = NanoRoot<BuildT>; // root node
4435 using NodeT2 = NanoUpper<BuildT>; // upper internal node
4436 using NodeT1 = NanoLower<BuildT>; // lower internal node
4437 using LeafT = NanoLeaf< BuildT>; // Leaf node
4438 using CoordT = typename RootT::CoordType;
4439 using ValueT = typename RootT::ValueType;
4440
4441 using FloatType = typename RootT::FloatType;
4442 using CoordValueType = typename RootT::CoordT::ValueType;
4443
4444 // All member data are mutable to allow for access methods to be const
4445#ifdef USE_SINGLE_ACCESSOR_KEY // 44 bytes total
4446 mutable CoordT mKey; // 3*4 = 12 bytes
4447#else // 68 bytes total
4448 mutable CoordT mKeys[3]; // 3*3*4 = 36 bytes
4449#endif
4450 mutable const RootT* mRoot;
4451 mutable const void* mNode[3]; // 4*8 = 32 bytes
4452
4453public:
4454 using ValueType = ValueT;
4455 using CoordType = CoordT;
4456
4457 static const int CacheLevels = 3;
4458
4459 using NodeInfo = typename ReadAccessor<ValueT, -1, -1, -1>::NodeInfo;
4460
4461 /// @brief Constructor from a root node
4462 __hostdev__ ReadAccessor(const RootT& root)
4463#ifdef USE_SINGLE_ACCESSOR_KEY
4464 : mKey(CoordType::max())
4465#else
4466 : mKeys{CoordType::max(), CoordType::max(), CoordType::max()}
4467#endif
4468 , mRoot(&root)
4469 , mNode{nullptr, nullptr, nullptr}
4470 {
4471 }
4472
4473 __hostdev__ const RootT& root() const { return *mRoot; }
4474
4475 /// @brief Defaults constructors
4476 ReadAccessor(const ReadAccessor&) = default;
4477 ~ReadAccessor() = default;
4478 ReadAccessor& operator=(const ReadAccessor&) = default;
4479
4480 /// @brief Return a const point to the cached node of the specified type
4481 ///
4482 /// @warning The return value could be NULL.
4483 template<typename NodeT>
4484 __hostdev__ const NodeT* getNode() const
4485 {
4486 using T = typename NodeTrait<TreeT, NodeT::LEVEL>::type;
4487 static_assert(is_same<T, NodeT>::value, "ReadAccessor::getNode: Invalid node type");
4488 return reinterpret_cast<const T*>(mNode[NodeT::LEVEL]);
4489 }
4490
4491#ifdef USE_SINGLE_ACCESSOR_KEY
4492 template<typename NodeT>
4493 __hostdev__ bool isCached(CoordValueType dirty) const
4494 {
4495 if (!mNode[NodeT::LEVEL])
4496 return false;
4497 if (dirty & int32_t(~NodeT::MASK)) {
4498 mNode[NodeT::LEVEL] = nullptr;
4499 return false;
4500 }
4501 return true;
4502 }
4503
4504 __hostdev__ CoordValueType computeDirty(const CoordType& ijk) const
4505 {
4506 return (ijk[0] ^ mKey[0]) | (ijk[1] ^ mKey[1]) | (ijk[2] ^ mKey[2]);
4507 }
4508#else
4509 template<typename NodeT>
4510 __hostdev__ bool isCached(const CoordType& ijk) const
4511 {
4512 return (ijk[0] & int32_t(~NodeT::MASK)) == mKeys[NodeT::LEVEL][0] && (ijk[1] & int32_t(~NodeT::MASK)) == mKeys[NodeT::LEVEL][1] && (ijk[2] & int32_t(~NodeT::MASK)) == mKeys[NodeT::LEVEL][2];
4513 }
4514#endif
4515
4516 __hostdev__ ValueType getValue(const CoordType& ijk) const
4517 {
4518#ifdef USE_SINGLE_ACCESSOR_KEY
4519 const CoordValueType dirty = this->computeDirty(ijk);
4520#else
4521 auto&& dirty = ijk;
4522#endif
4523 if (this->isCached<LeafT>(dirty)) {
4524 return ((LeafT*)mNode[0])->getValue(ijk);
4525 } else if (this->isCached<NodeT1>(dirty)) {
4526 return ((NodeT1*)mNode[1])->getValueAndCache(ijk, *this);
4527 } else if (this->isCached<NodeT2>(dirty)) {
4528 return ((NodeT2*)mNode[2])->getValueAndCache(ijk, *this);
4529 }
4530 return mRoot->getValueAndCache(ijk, *this);
4531 }
4532
4533 __hostdev__ NodeInfo getNodeInfo(const CoordType& ijk) const
4534 {
4535#ifdef USE_SINGLE_ACCESSOR_KEY
4536 const CoordValueType dirty = this->computeDirty(ijk);
4537#else
4538 auto&& dirty = ijk;
4539#endif
4540 if (this->isCached<LeafT>(dirty)) {
4541 return ((LeafT*)mNode[0])->getNodeInfoAndCache(ijk, *this);
4542 } else if (this->isCached<NodeT1>(dirty)) {
4543 return ((NodeT1*)mNode[1])->getNodeInfoAndCache(ijk, *this);
4544 } else if (this->isCached<NodeT2>(dirty)) {
4545 return ((NodeT2*)mNode[2])->getNodeInfoAndCache(ijk, *this);
4546 }
4547 return mRoot->getNodeInfoAndCache(ijk, *this);
4548 }
4549
4550 __hostdev__ bool isActive(const CoordType& ijk) const
4551 {
4552#ifdef USE_SINGLE_ACCESSOR_KEY
4553 const CoordValueType dirty = this->computeDirty(ijk);
4554#else
4555 auto&& dirty = ijk;
4556#endif
4557 if (this->isCached<LeafT>(dirty)) {
4558 return ((LeafT*)mNode[0])->isActive(ijk);
4559 } else if (this->isCached<NodeT1>(dirty)) {
4560 return ((NodeT1*)mNode[1])->isActiveAndCache(ijk, *this);
4561 } else if (this->isCached<NodeT2>(dirty)) {
4562 return ((NodeT2*)mNode[2])->isActiveAndCache(ijk, *this);
4563 }
4564 return mRoot->isActiveAndCache(ijk, *this);
4565 }
4566
4567 __hostdev__ bool probeValue(const CoordType& ijk, ValueType& v) const
4568 {
4569#ifdef USE_SINGLE_ACCESSOR_KEY
4570 const CoordValueType dirty = this->computeDirty(ijk);
4571#else
4572 auto&& dirty = ijk;
4573#endif
4574 if (this->isCached<LeafT>(dirty)) {
4575 return ((LeafT*)mNode[0])->probeValue(ijk, v);
4576 } else if (this->isCached<NodeT1>(dirty)) {
4577 return ((NodeT1*)mNode[1])->probeValueAndCache(ijk, v, *this);
4578 } else if (this->isCached<NodeT2>(dirty)) {
4579 return ((NodeT2*)mNode[2])->probeValueAndCache(ijk, v, *this);
4580 }
4581 return mRoot->probeValueAndCache(ijk, v, *this);
4582 }
4583
4584 __hostdev__ const LeafT* probeLeaf(const CoordType& ijk) const
4585 {
4586#ifdef USE_SINGLE_ACCESSOR_KEY
4587 const CoordValueType dirty = this->computeDirty(ijk);
4588#else
4589 auto&& dirty = ijk;
4590#endif
4591 if (this->isCached<LeafT>(dirty)) {
4592 return ((LeafT*)mNode[0]);
4593 } else if (this->isCached<NodeT1>(dirty)) {
4594 return ((NodeT1*)mNode[1])->probeLeafAndCache(ijk, *this);
4595 } else if (this->isCached<NodeT2>(dirty)) {
4596 return ((NodeT2*)mNode[2])->probeLeafAndCache(ijk, *this);
4597 }
4598 return mRoot->probeLeafAndCache(ijk, *this);
4599 }
4600
4601 template<typename RayT>
4602 __hostdev__ uint32_t getDim(const CoordType& ijk, const RayT& ray) const
4603 {
4604#ifdef USE_SINGLE_ACCESSOR_KEY
4605 const CoordValueType dirty = this->computeDirty(ijk);
4606#else
4607 auto&& dirty = ijk;
4608#endif
4609 if (this->isCached<LeafT>(dirty)) {
4610 return ((LeafT*)mNode[0])->getDimAndCache(ijk, ray, *this);
4611 } else if (this->isCached<NodeT1>(dirty)) {
4612 return ((NodeT1*)mNode[1])->getDimAndCache(ijk, ray, *this);
4613 } else if (this->isCached<NodeT2>(dirty)) {
4614 return ((NodeT2*)mNode[2])->getDimAndCache(ijk, ray, *this);
4615 }
4616 return mRoot->getDimAndCache(ijk, ray, *this);
4617 }
4618
4619private:
4620 /// @brief Allow nodes to insert themselves into the cache.
4621 template<typename>
4622 friend class RootNode;
4623 template<typename, uint32_t>
4624 friend class InternalNode;
4625 template<typename, typename, template<uint32_t> class, uint32_t>
4626 friend class LeafNode;
4627
4628 /// @brief Inserts a leaf node and key pair into this ReadAccessor
4629 template<typename NodeT>
4630 __hostdev__ void insert(const CoordType& ijk, const NodeT* node) const
4631 {
4632#ifdef USE_SINGLE_ACCESSOR_KEY
4633 mKey = ijk;
4634#else
4635 mKeys[NodeT::LEVEL] = ijk & ~NodeT::MASK;
4636#endif
4637 mNode[NodeT::LEVEL] = node;
4638 }
4639}; // ReadAccessor<BuildT, 0, 1, 2>
4640
4641//////////////////////////////////////////////////
4642
4643/// @brief Free-standing function for convenient creation of a ReadAccessor with
4644/// optional and customizable node caching.
4645///
4646/// @details createAccessor<>(grid): No caching of nodes and hence it's thread-safe but slow
4647/// createAccessor<0>(grid): Caching of leaf nodes only
4648/// createAccessor<1>(grid): Caching of lower internal nodes only
4649/// createAccessor<2>(grid): Caching of upper internal nodes only
4650/// createAccessor<0,1>(grid): Caching of leaf and lower internal nodes
4651/// createAccessor<0,2>(grid): Caching of leaf and upper internal nodes
4652/// createAccessor<1,2>(grid): Caching of lower and upper internal nodes
4653/// createAccessor<0,1,2>(grid): Caching of all nodes at all tree levels
4654
4655template <int LEVEL0 = -1, int LEVEL1 = -1, int LEVEL2 = -1, typename ValueT = float>
4656 ReadAccessor<ValueT, LEVEL0, LEVEL1, LEVEL2> createAccessor(const NanoGrid<ValueT> &grid)
4657{
4658 return ReadAccessor<ValueT, LEVEL0, LEVEL1, LEVEL2>(grid.tree().root());
4659}
4660
4661template <int LEVEL0 = -1, int LEVEL1 = -1, int LEVEL2 = -1, typename ValueT = float>
4662 ReadAccessor<ValueT, LEVEL0, LEVEL1, LEVEL2> createAccessor(const NanoTree<ValueT> &tree)
4663{
4664 return ReadAccessor<ValueT, LEVEL0, LEVEL1, LEVEL2>(tree().root());
4665}
4666
4667template <int LEVEL0 = -1, int LEVEL1 = -1, int LEVEL2 = -1, typename ValueT = float>
4668 ReadAccessor<ValueT, LEVEL0, LEVEL1, LEVEL2> createAccessor(const NanoRoot<ValueT> &root)
4669{
4670 return ReadAccessor<ValueT, LEVEL0, LEVEL1, LEVEL2>(root);
4671}
4672
4673//////////////////////////////////////////////////
4674
4675/// @brief This is a convenient class that allows for access to grid meta-data
4676/// that are independent of the value type of a grid. That is, this class
4677/// can be used to get information about a grid without actually knowing
4678/// its ValueType.
4679 class GridMetaData
4680{
4681 // We cast to a grid templated on a dummy ValueType which is safe because we are very
4682 // careful only to call certain methods which are known to be invariant to the ValueType!
4683 // In other words, don't use this technique unless you are intimately familiar with the
4684 // memory-layout of the data structure and the reasons why certain methods are safe
4685 // to call and others are not!
4686 using GridT = NanoGrid<int>;
4687 __hostdev__ const GridT& grid() const { return *reinterpret_cast<const GridT*>(this); }
4688
4689public:
4690 __hostdev__ bool isValid() const { return this->grid().isValid(); }
4691 __hostdev__ uint64_t gridSize() const { return this->grid().gridSize(); }
4692 __hostdev__ uint32_t gridIndex() const { return this->grid().gridIndex(); }
4693 __hostdev__ uint32_t gridCount() const { return this->grid().gridCount(); }
4694 __hostdev__ const char* shortGridName() const { return this->grid().shortGridName(); }
4695 __hostdev__ GridType gridType() const { return this->grid().gridType(); }
4696 __hostdev__ GridClass gridClass() const { return this->grid().gridClass(); }
4697 __hostdev__ bool isLevelSet() const { return this->grid().isLevelSet(); }
4698 __hostdev__ bool isFogVolume() const { return this->grid().isFogVolume(); }
4699 __hostdev__ bool isPointIndex() const { return this->grid().isPointIndex(); }
4700 __hostdev__ bool isPointData() const { return this->grid().isPointData(); }
4701 __hostdev__ bool isMask() const { return this->grid().isMask(); }
4702 __hostdev__ bool isStaggered() const { return this->grid().isStaggered(); }
4703 __hostdev__ bool isUnknown() const { return this->grid().isUnknown(); }
4704 __hostdev__ const Map& map() const { return this->grid().map(); }
4705 __hostdev__ const BBox<Vec3R>& worldBBox() const { return this->grid().worldBBox(); }
4706 __hostdev__ const BBox<Coord>& indexBBox() const { return this->grid().indexBBox(); }
4707 __hostdev__ Vec3R voxelSize() const { return this->grid().voxelSize(); }
4708 __hostdev__ int blindDataCount() const { return this->grid().blindDataCount(); }
4709 __hostdev__ const GridBlindMetaData& blindMetaData(int n) const { return this->grid().blindMetaData(n); }
4710 __hostdev__ uint64_t activeVoxelCount() const { return this->grid().activeVoxelCount(); }
4711 __hostdev__ uint32_t activeTileCount(uint32_t n) const { return this->grid().tree().activeTileCount(n); }
4712 __hostdev__ uint32_t nodeCount(uint32_t level) const { return this->grid().tree().nodeCount(level); }
4713 __hostdev__ uint64_t checksum() const { return this->grid().checksum(); }
4714 __hostdev__ bool isEmpty() const { return this->grid().isEmpty(); }
4715 __hostdev__ Version version() const { return this->grid().version(); }
4716}; // GridMetaData
4717
4718/// @brief Class to access points at a specific voxel location
4719template<typename AttT>
4720 class PointAccessor : public DefaultReadAccessor<uint32_t>
4721{
4722 using AccT = DefaultReadAccessor<uint32_t>;
4723 const UInt32Grid* mGrid;
4724 const AttT* mData;
4725
4726public:
4727 using LeafNodeType = typename NanoRoot<uint32_t>::LeafNodeType;
4728
4729 PointAccessor(const UInt32Grid& grid)
4730 : AccT(grid.tree().root())
4731 , mGrid(&grid)
4732 , mData(reinterpret_cast<const AttT*>(grid.blindData(0)))
4733 {
4734 NANOVDB_ASSERT(grid.gridType() == GridType::UInt32);
4735 NANOVDB_ASSERT((grid.gridClass() == GridClass::PointIndex && is_same<uint32_t, AttT>::value) ||
4736 (grid.gridClass() == GridClass::PointData && is_same<Vec3f, AttT>::value));
4737 NANOVDB_ASSERT(grid.blindDataCount() >= 1);
4738 }
4739 /// @brief Return the total number of point in the grid and set the
4740 /// iterators to the complete range of points.
4741 __hostdev__ uint64_t gridPoints(const AttT*& begin, const AttT*& end) const
4742 {
4743 const uint64_t count = mGrid->blindMetaData(0).mElementCount;
4744 begin = mData;
4745 end = begin + count;
4746 return count;
4747 }
4748 /// @brief Return the number of points in the leaf node containing the coordinate @a ijk.
4749 /// If this return value is larger than zero then the iterators @a begin and @a end
4750 /// will point to all the attributes contained within that leaf node.
4751 __hostdev__ uint64_t leafPoints(const Coord& ijk, const AttT*& begin, const AttT*& end) const
4752 {
4753 auto* leaf = this->probeLeaf(ijk);
4754 if (leaf == nullptr) {
4755 return 0;
4756 }
4757 begin = mData + leaf->minimum();
4758 end = begin + leaf->maximum();
4759 return leaf->maximum();
4760 }
4761
4762 /// @brief get iterators over offsets to points at a specific voxel location
4763 __hostdev__ uint64_t voxelPoints(const Coord& ijk, const AttT*& begin, const AttT*& end) const
4764 {
4765 auto* leaf = this->probeLeaf(ijk);
4766 if (leaf == nullptr)
4767 return 0;
4768 const uint32_t offset = LeafNodeType::CoordToOffset(ijk);
4769 if (leaf->isActive(offset)) {
4770 auto* p = mData + leaf->minimum();
4771 begin = p + (offset == 0 ? 0 : leaf->getValue(offset - 1));
4772 end = p + leaf->getValue(offset);
4773 return end - begin;
4774 }
4775 return 0;
4776 }
4777}; // PointAccessor
4778
4779} // namespace nanovdb
4780
4781#endif // end of NANOVDB_NANOVDB_H_HAS_BEEN_INCLUDED
ROOT_LEVEL
#define ROOT_LEVEL
Definition: CNanoVDB.h:53
value
ValueT value
Definition: GridBuilder.h:1287
child
ChildT * child
Definition: GridBuilder.h:1286
NANOVDB_HOSTDEV_DISABLE_WARNING
#define NANOVDB_HOSTDEV_DISABLE_WARNING
Definition: NanoVDB.h:178
NANOVDB_MINOR_VERSION_NUMBER
#define NANOVDB_MINOR_VERSION_NUMBER
Definition: NanoVDB.h:105
NANOVDB_DATA_ALIGNMENT
#define NANOVDB_DATA_ALIGNMENT
Definition: NanoVDB.h:116
__hostdev__
#define __hostdev__
Definition: NanoVDB.h:168
NANOVDB_MAJOR_VERSION_NUMBER
#define NANOVDB_MAJOR_VERSION_NUMBER
Definition: NanoVDB.h:104
NANOVDB_ASSERT
#define NANOVDB_ASSERT(x)
Definition: NanoVDB.h:149
NANOVDB_MAGIC_NUMBER
#define NANOVDB_MAGIC_NUMBER
Definition: NanoVDB.h:102
NANOVDB_PATCH_VERSION_NUMBER
#define NANOVDB_PATCH_VERSION_NUMBER
Definition: NanoVDB.h:106
nanovdb::BBox< CoordT, false >::Iterator::operator*
const CoordT & operator*() const
Definition: NanoVDB.h:1608
nanovdb::BBox< CoordT, false >::Iterator::Iterator
Iterator(const BBox &b)
Definition: NanoVDB.h:1581
nanovdb::BBox< CoordT, false >::Iterator::operator++
Iterator operator++(int)
Definition: NanoVDB.h:1600
nanovdb::BBox< CoordT, false >::Iterator::operator++
Iterator & operator++()
Definition: NanoVDB.h:1586
nanovdb::Coord
Signed (i, j, k) 32-bit integer coordinate class, similar to openvdb::math::Coord.
Definition: NanoVDB.h:860
nanovdb::Coord::operator&=
Coord & operator&=(int n)
Definition: NanoVDB.h:940
nanovdb::Coord::operator-
Coord operator-(const Coord &rhs) const
Definition: NanoVDB.h:962
nanovdb::Coord::asVec3d
Vec3< double > asVec3d() const
Return a double precision floating-point vector of this coordinate.
Definition: NanoVDB.h:1182
nanovdb::Coord::IndexType
uint32_t IndexType
Definition: NanoVDB.h:864
nanovdb::Coord::operator<<
Coord operator<<(IndexType n) const
Definition: NanoVDB.h:926
nanovdb::Coord::Floor
static Coord Floor(const Vec3T &xyz)
Return the largest integer coordinates that are not greater than xyz (node centered conversion).
Definition: NanoVDB.h:1019
nanovdb::Coord::Coord
Coord(ValueType n)
Initializes all coordinates to the given signed integer.
Definition: NanoVDB.h:873
nanovdb::Coord::operator-=
Coord & operator-=(const Coord &rhs)
Definition: NanoVDB.h:970
nanovdb::Coord::minComponent
Coord & minComponent(const Coord &other)
Perform a component-wise minimum with the other Coord.
Definition: NanoVDB.h:979
nanovdb::Coord::operator+
Coord operator+(const Coord &rhs) const
Definition: NanoVDB.h:961
nanovdb::Coord::memUsage
static size_t memUsage()
Definition: NanoVDB.h:901
nanovdb::Coord::operator<
bool operator<(const Coord &rhs) const
Return true if this Coord is lexicographically less than the given Coord.
Definition: NanoVDB.h:932
nanovdb::Coord::operator+=
Coord & operator+=(const Coord &rhs)
Definition: NanoVDB.h:963
nanovdb::Coord::operator=
Coord & operator=(const CoordT &other)
Assignment operator that works with openvdb::Coord.
Definition: NanoVDB.h:913
nanovdb::Coord::y
int32_t y() const
Definition: NanoVDB.h:890
nanovdb::Coord::maxComponent
Coord & maxComponent(const Coord &other)
Perform a component-wise maximum with the other Coord.
Definition: NanoVDB.h:991
nanovdb::Coord::operator&
Coord operator&(IndexType n) const
Return a new instance with coordinates masked by the given unsigned integer.
Definition: NanoVDB.h:923
nanovdb::Coord::Coord
Coord()
Initialize all coordinates to zero.
Definition: NanoVDB.h:867
nanovdb::Coord::octant
uint8_t octant() const
Return the octant of this Coord.
Definition: NanoVDB.h:1028
nanovdb::Coord::operator[]
const ValueType & operator[](IndexType i) const
Return a const reference to the given Coord component.
Definition: NanoVDB.h:905
nanovdb::Coord::z
int32_t z() const
Definition: NanoVDB.h:891
nanovdb::Coord::operator<<=
Coord & operator<<=(uint32_t n)
Definition: NanoVDB.h:947
nanovdb::Coord::x
int32_t x() const
Definition: NanoVDB.h:889
nanovdb::Coord::Coord
Coord(ValueType i, ValueType j, ValueType k)
Initializes coordinate to the given signed integers.
Definition: NanoVDB.h:879
nanovdb::Coord::y
int32_t & y()
Definition: NanoVDB.h:894
nanovdb::Coord::offsetBy
Coord offsetBy(ValueType n) const
Definition: NanoVDB.h:1007
nanovdb::Coord::x
int32_t & x()
Definition: NanoVDB.h:893
nanovdb::Coord::Coord
Coord(ValueType *ptr)
Definition: NanoVDB.h:884
nanovdb::Coord::operator!=
bool operator!=(const Coord &rhs) const
Definition: NanoVDB.h:939
nanovdb::Coord::min
static Coord min()
Definition: NanoVDB.h:899
nanovdb::Coord::operator[]
ValueType & operator[](IndexType i)
Return a non-const reference to the given Coord component.
Definition: NanoVDB.h:909
nanovdb::Coord::operator==
bool operator==(const Coord &rhs) const
Definition: NanoVDB.h:938
nanovdb::Coord::asVec3s
Vec3< float > asVec3s() const
Return a single precision floating-point vector of this coordinate.
Definition: NanoVDB.h:1179
nanovdb::Coord::offsetBy
Coord offsetBy(ValueType dx, ValueType dy, ValueType dz) const
Definition: NanoVDB.h:1002
nanovdb::Coord::max
static Coord max()
Definition: NanoVDB.h:897
nanovdb::Coord::z
int32_t & z()
Definition: NanoVDB.h:895
nanovdb::Coord::lessThan
static bool lessThan(const Coord &a, const Coord &b)
Definition: NanoVDB.h:1011
nanovdb::Coord::operator>>
Coord operator>>(IndexType n) const
Definition: NanoVDB.h:929
nanovdb::Coord::hash
uint32_t hash() const
Return a hash key derived from the existing coordinates.
Definition: NanoVDB.h:1024
nanovdb::Coord::ValueType
int32_t ValueType
Definition: NanoVDB.h:863
nanovdb::Coord::operator+=
Coord & operator+=(int n)
Definition: NanoVDB.h:954
nanovdb::Fp16
Dummy type for a 16bit quantization of float point values.
Definition: NanoVDB.h:201
nanovdb::Fp4
Dummy type for a 4bit quantization of float point values.
Definition: NanoVDB.h:195
nanovdb::Fp8
Dummy type for a 8bit quantization of float point values.
Definition: NanoVDB.h:198
nanovdb::FpN
Dummy type for a variable bit quantization of floating point values.
Definition: NanoVDB.h:204
nanovdb::GridMetaData
This is a convenient class that allows for access to grid meta-data that are independent of the value...
Definition: NanoVDB.h:4680
nanovdb::GridMetaData::blindMetaData
const GridBlindMetaData & blindMetaData(int n) const
Definition: NanoVDB.h:4709
nanovdb::GridMetaData::isPointData
bool isPointData() const
Definition: NanoVDB.h:4700
nanovdb::GridMetaData::gridIndex
uint32_t gridIndex() const
Definition: NanoVDB.h:4692
nanovdb::GridMetaData::shortGridName
const char * shortGridName() const
Definition: NanoVDB.h:4694
nanovdb::GridMetaData::activeVoxelCount
uint64_t activeVoxelCount() const
Definition: NanoVDB.h:4710
nanovdb::GridMetaData::isStaggered
bool isStaggered() const
Definition: NanoVDB.h:4702
nanovdb::GridMetaData::isValid
bool isValid() const
Definition: NanoVDB.h:4690
nanovdb::GridMetaData::worldBBox
const BBox< Vec3R > & worldBBox() const
Definition: NanoVDB.h:4705
nanovdb::GridMetaData::gridType
GridType gridType() const
Definition: NanoVDB.h:4695
nanovdb::GridMetaData::gridSize
uint64_t gridSize() const
Definition: NanoVDB.h:4691
nanovdb::GridMetaData::blindDataCount
int blindDataCount() const
Definition: NanoVDB.h:4708
nanovdb::GridMetaData::checksum
uint64_t checksum() const
Definition: NanoVDB.h:4713
nanovdb::GridMetaData::isFogVolume
bool isFogVolume() const
Definition: NanoVDB.h:4698
nanovdb::GridMetaData::activeTileCount
uint32_t activeTileCount(uint32_t n) const
Definition: NanoVDB.h:4711
nanovdb::GridMetaData::isMask
bool isMask() const
Definition: NanoVDB.h:4701
nanovdb::GridMetaData::gridCount
uint32_t gridCount() const
Definition: NanoVDB.h:4693
nanovdb::GridMetaData::gridClass
GridClass gridClass() const
Definition: NanoVDB.h:4696
nanovdb::GridMetaData::version
Version version() const
Definition: NanoVDB.h:4715
nanovdb::GridMetaData::isEmpty
bool isEmpty() const
Definition: NanoVDB.h:4714
nanovdb::GridMetaData::voxelSize
Vec3R voxelSize() const
Definition: NanoVDB.h:4707
nanovdb::GridMetaData::indexBBox
const BBox< Coord > & indexBBox() const
Definition: NanoVDB.h:4706
nanovdb::GridMetaData::map
const Map & map() const
Definition: NanoVDB.h:4704
nanovdb::GridMetaData::isLevelSet
bool isLevelSet() const
Definition: NanoVDB.h:4697
nanovdb::GridMetaData::nodeCount
uint32_t nodeCount(uint32_t level) const
Definition: NanoVDB.h:4712
nanovdb::GridMetaData::isPointIndex
bool isPointIndex() const
Definition: NanoVDB.h:4699
nanovdb::GridMetaData::isUnknown
bool isUnknown() const
Definition: NanoVDB.h:4703
nanovdb::Grid
Highest level of the data structure. Contains a tree and a world->index transform (that currently onl...
Definition: NanoVDB.h:2308
nanovdb::Grid::indexToWorld
Vec3T indexToWorld(const Vec3T &xyz) const
index to world space transformation
Definition: NanoVDB.h:2364
nanovdb::Grid::blindMetaData
const GridBlindMetaData & blindMetaData(int n) const
Definition: NanoVDB.h:2482
nanovdb::Grid::indexToWorldF
Vec3T indexToWorldF(const Vec3T &xyz) const
index to world space transformation
Definition: NanoVDB.h:2387
nanovdb::Grid::gridType
const GridType & gridType() const
Definition: NanoVDB.h:2418
nanovdb::Grid::ValueType
typename TreeT::ValueType ValueType
Definition: NanoVDB.h:2313
nanovdb::Grid::findBlindDataForSemantic
int findBlindDataForSemantic(GridBlindDataSemantic semantic) const
Return the index of the blind data with specified semantic if found, otherwise -1.
Definition: NanoVDB.h:2489
nanovdb::Grid::RootType
typename TreeT::RootType RootType
Definition: NanoVDB.h:2311
nanovdb::Grid::isSequential
bool isSequential() const
return true if the specified node type is layed out breadth-first in memory and has a fixed size....
Definition: NanoVDB.h:2437
nanovdb::Grid::~Grid
~Grid()=delete
nanovdb::Grid::isPointData
bool isPointData() const
Definition: NanoVDB.h:2424
nanovdb::Grid::gridIndex
uint32_t gridIndex() const
Return index of this grid in the buffer.
Definition: NanoVDB.h:2338
nanovdb::Grid::shortGridName
const char * shortGridName() const
Return a c-string with the name of this grid, truncated to 255 characters.
Definition: NanoVDB.h:2456
nanovdb::Grid::isBreadthFirst
bool isBreadthFirst() const
Definition: NanoVDB.h:2432
nanovdb::Grid::activeVoxelCount
uint64_t activeVoxelCount() const
Return the total number of active voxels in this tree.
Definition: NanoVDB.h:2414
nanovdb::Grid::indexToWorldDirF
Vec3T indexToWorldDirF(const Vec3T &dir) const
transformation from index space direction to world space direction
Definition: NanoVDB.h:2392
nanovdb::Grid::CoordType
typename TreeT::CoordType CoordType
Definition: NanoVDB.h:2315
nanovdb::Grid::worldToIndexF
Vec3T worldToIndexF(const Vec3T &xyz) const
world to index space transformation
Definition: NanoVDB.h:2383
nanovdb::Grid::worldToIndexDirF
Vec3T worldToIndexDirF(const Vec3T &dir) const
transformation from world space direction to index space direction
Definition: NanoVDB.h:2397
nanovdb::Grid::voxelSize
const Vec3R & voxelSize() const
Return a const reference to the size of a voxel in world units.
Definition: NanoVDB.h:2353
nanovdb::Grid::isStaggered
bool isStaggered() const
Definition: NanoVDB.h:2422
nanovdb::Grid::gridClass
const GridClass & gridClass() const
Definition: NanoVDB.h:2419
nanovdb::Grid::isValid
bool isValid() const
Methods related to the classification of this grid.
Definition: NanoVDB.h:2417
nanovdb::Grid::data
DataType * data()
Definition: NanoVDB.h:2327
nanovdb::Grid::hasAverage
bool hasAverage() const
Definition: NanoVDB.h:2430
nanovdb::Grid::hasMinMax
bool hasMinMax() const
Definition: NanoVDB.h:2427
nanovdb::Grid::gridName
const char * gridName() const
Return a c-string with the name of this grid.
Definition: NanoVDB.h:2445
nanovdb::Grid::worldBBox
const BBox< Vec3R > & worldBBox() const
Computes a AABB of active values in world space.
Definition: NanoVDB.h:2405
nanovdb::Grid::getAccessor
AccessorType getAccessor() const
Return a new instance of a ReadAccessor used to access values in this grid.
Definition: NanoVDB.h:2350
nanovdb::Grid::gridSize
uint64_t gridSize() const
Return the memory footprint of the entire grid, i.e. including all nodes and blind data.
Definition: NanoVDB.h:2335
nanovdb::Grid::indexToWorldDir
Vec3T indexToWorldDir(const Vec3T &dir) const
transformation from index space direction to world space direction
Definition: NanoVDB.h:2369
nanovdb::Grid::blindDataCount
int blindDataCount() const
Return the count of blind-data encoded in this grid.
Definition: NanoVDB.h:2465
nanovdb::Grid::indexToWorldGradF
Vec3T indexToWorldGradF(const Vec3T &grad) const
Transforms the gradient from index space to world space.
Definition: NanoVDB.h:2402
nanovdb::Grid::checksum
uint64_t checksum() const
Return checksum of the grid buffer.
Definition: NanoVDB.h:2459
nanovdb::Grid::isFogVolume
bool isFogVolume() const
Definition: NanoVDB.h:2421
nanovdb::Grid::tree
const TreeT & tree() const
Return a const reference to the tree.
Definition: NanoVDB.h:2344
nanovdb::Grid::isMask
bool isMask() const
Definition: NanoVDB.h:2425
nanovdb::Grid::indexBBox
const BBox< CoordType > & indexBBox() const
Computes a AABB of active values in index space.
Definition: NanoVDB.h:2411
nanovdb::Grid::hasLongGridName
bool hasLongGridName() const
Definition: NanoVDB.h:2429
nanovdb::Grid::blindData
const void * blindData(uint32_t n) const
Returns a const pointer to the blindData at the specified linear offset.
Definition: NanoVDB.h:2473
nanovdb::Grid::memUsage
static uint64_t memUsage()
Return memory usage in bytes for this class only.
Definition: NanoVDB.h:2332
nanovdb::Grid::tree
TreeT & tree()
Return a non-const reference to the tree.
Definition: NanoVDB.h:2347
nanovdb::Grid::worldToIndex
Vec3T worldToIndex(const Vec3T &xyz) const
world to index space transformation
Definition: NanoVDB.h:2360
nanovdb::Grid::gridCount
uint32_t gridCount() const
Return total number of grids in the buffer.
Definition: NanoVDB.h:2341
nanovdb::Grid::worldToIndexDir
Vec3T worldToIndexDir(const Vec3T &dir) const
transformation from world space direction to index space direction
Definition: NanoVDB.h:2374
nanovdb::Grid::version
Version version() const
Definition: NanoVDB.h:2325
nanovdb::Grid::isEmpty
bool isEmpty() const
Return true if this grid is empty, i.e. contains no values or nodes.
Definition: NanoVDB.h:2462
nanovdb::Grid::map
const Map & map() const
Return a const reference to the Map for this grid.
Definition: NanoVDB.h:2356
nanovdb::Grid::hasStdDeviation
bool hasStdDeviation() const
Definition: NanoVDB.h:2431
nanovdb::Grid::hasBBox
bool hasBBox() const
Definition: NanoVDB.h:2428
nanovdb::Grid::isLevelSet
bool isLevelSet() const
Definition: NanoVDB.h:2420
nanovdb::Grid::TreeType
TreeT TreeType
Definition: NanoVDB.h:2310
nanovdb::Grid::Grid
Grid(const Grid &)=delete
Disallow constructions, copy and assignment.
nanovdb::Grid::BuildType
typename TreeT::BuildType BuildType
Definition: NanoVDB.h:2314
nanovdb::Grid::operator=
Grid & operator=(const Grid &)=delete
nanovdb::Grid::indexToWorldGrad
Vec3T indexToWorldGrad(const Vec3T &grad) const
transform the gradient from index space to world space.
Definition: NanoVDB.h:2379
nanovdb::Grid::data
const DataType * data() const
Definition: NanoVDB.h:2329
nanovdb::Grid::isPointIndex
bool isPointIndex() const
Definition: NanoVDB.h:2423
nanovdb::Grid::isUnknown
bool isUnknown() const
Definition: NanoVDB.h:2426
nanovdb::Half
Dummy type for a 16 bit floating point values.
Definition: NanoVDB.h:192
nanovdb::InternalNode
Internal nodes of a VDB treedim(),.
Definition: NanoVDB.h:3121
nanovdb::InternalNode::~InternalNode
~InternalNode()=delete
nanovdb::InternalNode::offsetToGlobalCoord
Coord offsetToGlobalCoord(uint32_t n) const
Definition: NanoVDB.h:3244
nanovdb::InternalNode::valueMask
const MaskType< LOG2DIM > & valueMask() const
Return a const reference to the bit mask of active voxels in this internal node.
Definition: NanoVDB.h:3159
nanovdb::InternalNode::isActive
bool isActive() const
Retrun true if this node or any of its child nodes contain active values.
Definition: NanoVDB.h:3252
nanovdb::InternalNode::dim
static uint32_t dim()
Return the dimension, in voxel units, of this internal node (typically 8*16 or 8*16*32)
Definition: NanoVDB.h:3153
nanovdb::InternalNode::memUsage
static size_t memUsage()
Return memory usage in bytes for the class.
Definition: NanoVDB.h:3156
nanovdb::InternalNode::origin
CoordType origin() const
Return the origin in index space of this leaf node.
Definition: NanoVDB.h:3165
nanovdb::InternalNode::CoordType
typename ChildT::CoordType CoordType
Definition: NanoVDB.h:3129
nanovdb::InternalNode::bbox
const BBox< CoordType > & bbox() const
Return a const reference to the bounding box in index space of active values in this internal node an...
Definition: NanoVDB.h:3183
nanovdb::InternalNode::variance
FloatType variance() const
Return the variance of all the active values encoded in this internal node and any of its child nodes...
Definition: NanoVDB.h:3177
nanovdb::InternalNode::childMask
const MaskType< LOG2DIM > & childMask() const
Return a const reference to the bit mask of child nodes in this internal node.
Definition: NanoVDB.h:3162
nanovdb::InternalNode::average
const FloatType & average() const
Return a const reference to the average of all the active values encoded in this internal node and an...
Definition: NanoVDB.h:3174
nanovdb::InternalNode::data
DataType * data()
Definition: NanoVDB.h:3148
nanovdb::InternalNode::localToGlobalCoord
void localToGlobalCoord(Coord &ijk) const
modifies local coordinates to global coordinates of a tile or child node
Definition: NanoVDB.h:3238
nanovdb::InternalNode::BuildType
typename DataType::BuildT BuildType
Definition: NanoVDB.h:3126
nanovdb::InternalNode::ChildNodeType
ChildT ChildNodeType
Definition: NanoVDB.h:3128
nanovdb::InternalNode::probeLeaf
const LeafNodeType * probeLeaf(const CoordType &ijk) const
Definition: NanoVDB.h:3207
nanovdb::InternalNode::isActive
bool isActive(const CoordType &ijk) const
Definition: NanoVDB.h:3192
nanovdb::InternalNode::ValueType
typename DataType::ValueT ValueType
Definition: NanoVDB.h:3124
nanovdb::InternalNode::CoordToOffset
static uint32_t CoordToOffset(const CoordType &ijk)
Return the linear offset corresponding to the given coordinate.
Definition: NanoVDB.h:3216
nanovdb::InternalNode::FloatType
typename DataType::StatsT FloatType
Definition: NanoVDB.h:3125
nanovdb::InternalNode::OffsetToLocalCoord
static Coord OffsetToLocalCoord(uint32_t n)
Definition: NanoVDB.h:3230
nanovdb::InternalNode::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Definition: NanoVDB.h:3198
nanovdb::InternalNode::LeafNodeType
typename ChildT::LeafNodeType LeafNodeType
Definition: NanoVDB.h:3127
nanovdb::InternalNode::stdDeviation
const FloatType & stdDeviation() const
Return a const reference to the standard deviation of all the active values encoded in this internal ...
Definition: NanoVDB.h:3180
nanovdb::InternalNode::maximum
const ValueType & maximum() const
Return a const reference to the maximum active value encoded in this internal node and any of its chi...
Definition: NanoVDB.h:3171
nanovdb::InternalNode::InternalNode
InternalNode()=delete
This class cannot be constructed or deleted.
nanovdb::InternalNode::getValue
ValueType getValue(const CoordType &ijk) const
Return the value of the given voxel.
Definition: NanoVDB.h:3186
nanovdb::InternalNode::MaskType
typename ChildT::template MaskType< LOG2 > MaskType
Definition: NanoVDB.h:3132
nanovdb::InternalNode::minimum
const ValueType & minimum() const
Return a const reference to the minimum active value encoded in this internal node and any of its chi...
Definition: NanoVDB.h:3168
nanovdb::InternalNode::data
const DataType * data() const
Definition: NanoVDB.h:3150
nanovdb::InternalNode::operator=
InternalNode & operator=(const InternalNode &)=delete
nanovdb::InternalNode::InternalNode
InternalNode(const InternalNode &)=delete
nanovdb::LeafNode
Leaf nodes of the VDB tree. (defaults to 8x8x8 = 512 voxels)
Definition: NanoVDB.h:3684
nanovdb::LeafNode::setValue
void setValue(const CoordT &ijk, const ValueType &v)
Sets the value at the specified location and activate its state.
Definition: NanoVDB.h:3789
nanovdb::LeafNode::setValueOnly
void setValueOnly(uint32_t offset, const ValueType &v)
Sets the value at the specified location but leaves its state unchanged.
Definition: NanoVDB.h:3794
nanovdb::LeafNode::isActive
bool isActive(const CoordT &ijk) const
Return true if the voxel value at the given coordinate is active.
Definition: NanoVDB.h:3798
nanovdb::LeafNode::BuildType
typename DataType::BuildType BuildType
Definition: NanoVDB.h:3694
nanovdb::LeafNode::valueMask
const MaskType< LOG2DIM > & valueMask() const
Return a const reference to the bit mask of active voxels in this leaf node.
Definition: NanoVDB.h:3714
nanovdb::LeafNode::isActive
bool isActive() const
Return true if any of the voxel value are active in this leaf node.
Definition: NanoVDB.h:3802
nanovdb::LeafNode::CoordType
CoordT CoordType
Definition: NanoVDB.h:3695
nanovdb::LeafNode::dim
static uint32_t dim()
Return the dimension, in index space, of this leaf node (typically 8 as for openvdb leaf nodes!...
Definition: NanoVDB.h:3752
nanovdb::LeafNode::updateBBox
void updateBBox()
Updates the local bounding box of active voxels in this node.
Definition: NanoVDB.h:3883
nanovdb::LeafNode::probeValue
bool probeValue(const CoordT &ijk, ValueType &v) const
Return true if the voxel value at the given coordinate is active and updates v with the value.
Definition: NanoVDB.h:3810
nanovdb::LeafNode::variance
FloatType variance() const
Return the variance of all the active values encoded in this leaf node.
Definition: NanoVDB.h:3726
nanovdb::LeafNode::operator=
LeafNode & operator=(const LeafNode &)=delete
nanovdb::LeafNode::isActive
bool isActive(uint32_t n) const
Definition: NanoVDB.h:3799
nanovdb::LeafNode::data
DataType * data()
Definition: NanoVDB.h:3709
nanovdb::LeafNode::flags
uint8_t flags() const
Definition: NanoVDB.h:3731
nanovdb::LeafNode::localToGlobalCoord
void localToGlobalCoord(Coord &ijk) const
Converts (in place) a local index coordinate to a global index coordinate.
Definition: NanoVDB.h:3744
nanovdb::LeafNode::maximum
ValueType maximum() const
Return a const reference to the maximum active value encoded in this leaf node.
Definition: NanoVDB.h:3720
nanovdb::LeafNode::FloatType
typename DataType::FloatType FloatType
Definition: NanoVDB.h:3693
nanovdb::LeafNode::origin
CoordT origin() const
Return the origin in index space of this leaf node.
Definition: NanoVDB.h:3734
nanovdb::LeafNode::~LeafNode
~LeafNode()=delete
nanovdb::LeafNode::CoordToOffset
static uint32_t CoordToOffset(const CoordT &ijk)
Return the linear offset corresponding to the given coordinate.
Definition: NanoVDB.h:3820
nanovdb::LeafNode::offsetToGlobalCoord
CoordT offsetToGlobalCoord(uint32_t n) const
Definition: NanoVDB.h:3746
nanovdb::LeafNode::setValueOnly
void setValueOnly(const CoordT &ijk, const ValueType &v)
Definition: NanoVDB.h:3795
nanovdb::LeafNode::getValue
ValueType getValue(uint32_t offset) const
Return the voxel value at the given offset.
Definition: NanoVDB.h:3781
nanovdb::LeafNode::average
FloatType average() const
Return a const reference to the average of all the active values encoded in this leaf node.
Definition: NanoVDB.h:3723
nanovdb::LeafNode::probeLeaf
const LeafNode * probeLeaf(const CoordT &) const
Definition: NanoVDB.h:3817
nanovdb::LeafNode::getValue
ValueType getValue(const CoordT &ijk) const
Return the voxel value at the given coordinate.
Definition: NanoVDB.h:3784
nanovdb::LeafNode::MaskType
MaskT< LOG2 > MaskType
Definition: NanoVDB.h:3698
nanovdb::LeafNode::voxelCount
static uint32_t voxelCount()
Return the total number of voxels (e.g. values) encoded in this leaf node.
Definition: NanoVDB.h:3769
nanovdb::LeafNode::LeafNode
LeafNode(const LeafNode &)=delete
nanovdb::LeafNode::memUsage
static uint64_t memUsage()
return memory usage in bytes for the class
Definition: NanoVDB.h:3772
nanovdb::LeafNode::bbox
BBox< CoordT > bbox() const
Return the bounding box in index space of active values in this leaf node.
Definition: NanoVDB.h:3755
nanovdb::LeafNode::LeafNode
LeafNode()=delete
This class cannot be constructed or deleted.
nanovdb::LeafNode::minimum
ValueType minimum() const
Return a const reference to the minimum active value encoded in this leaf node.
Definition: NanoVDB.h:3717
nanovdb::LeafNode::ValueType
typename DataType::ValueType ValueType
Definition: NanoVDB.h:3692
nanovdb::LeafNode::OffsetToLocalCoord
static CoordT OffsetToLocalCoord(uint32_t n)
Definition: NanoVDB.h:3736
nanovdb::LeafNode::data
const DataType * data() const
Definition: NanoVDB.h:3711
nanovdb::LeafNode::stdDeviation
FloatType stdDeviation() const
Return a const reference to the standard deviation of all the active values encoded in this leaf node...
Definition: NanoVDB.h:3729
nanovdb::Mask::Iterator
Definition: NanoVDB.h:1819
nanovdb::Mask::Iterator::Iterator
Iterator()
Definition: NanoVDB.h:1821
nanovdb::Mask::Iterator::operator=
Iterator & operator=(const Iterator &)=default
nanovdb::Mask::Iterator::operator*
uint32_t operator*() const
Definition: NanoVDB.h:1832
nanovdb::Mask::Iterator::Iterator
Iterator(uint32_t pos, const Mask *parent)
Definition: NanoVDB.h:1826
nanovdb::Mask::Iterator::operator++
Iterator & operator++()
Definition: NanoVDB.h:1834
nanovdb::Mask
Bit-mask to encode active states and facilitate sequential iterators and a fast codec for I/O compres...
Definition: NanoVDB.h:1795
nanovdb::Mask::beginOn
Iterator beginOn() const
Definition: NanoVDB.h:1898
nanovdb::Mask::set
void set(uint32_t n, bool On)
Definition: NanoVDB.h:1923
nanovdb::Mask::operator==
bool operator==(const Mask &other) const
Definition: NanoVDB.h:1888
nanovdb::Mask::memUsage
static size_t memUsage()
Return the memory footprint in bytes of this Mask.
Definition: NanoVDB.h:1802
nanovdb::Mask::setOn
void setOn()
Set all bits on.
Definition: NanoVDB.h:1936
nanovdb::Mask::toggle
void toggle(uint32_t n)
Definition: NanoVDB.h:1963
nanovdb::Mask::countOn
uint32_t countOn() const
Definition: NanoVDB.h:1810
nanovdb::Mask::setOff
void setOff(uint32_t n)
Definition: NanoVDB.h:1921
nanovdb::Mask::Mask
Mask(const Mask &other)
Copy constructor.
Definition: NanoVDB.h:1859
nanovdb::Mask::Mask
Mask(bool on)
Definition: NanoVDB.h:1851
nanovdb::Mask::operator=
Mask & operator=(const MaskT &other)
Assignment operator that works with openvdb::util::NodeMask.
Definition: NanoVDB.h:1875
nanovdb::Mask::isOn
bool isOn(uint32_t n) const
Return true if the given bit is set.
Definition: NanoVDB.h:1901
nanovdb::Mask::set
void set(bool on)
Set all bits off.
Definition: NanoVDB.h:1950
nanovdb::Mask::setOff
void setOff()
Set all bits off.
Definition: NanoVDB.h:1943
nanovdb::Mask::bitCount
static uint32_t bitCount()
Return the number of bits available in this Mask.
Definition: NanoVDB.h:1805
nanovdb::Mask::isOff
bool isOff() const
Definition: NanoVDB.h:1911
nanovdb::Mask::operator!=
bool operator!=(const Mask &other) const
Definition: NanoVDB.h:1896
nanovdb::Mask::toggle
void toggle()
brief Toggle the state of all bits in the mask
Definition: NanoVDB.h:1957
nanovdb::Mask::wordCount
static uint32_t wordCount()
Return the number of machine words used by this Mask.
Definition: NanoVDB.h:1808
nanovdb::Mask::getWord
WordT getWord(int n) const
Return the nth word of the bit mask, for a word of arbitrary size.
Definition: NanoVDB.h:1867
nanovdb::Mask::isOn
bool isOn() const
Definition: NanoVDB.h:1903
nanovdb::Mask::Mask
Mask()
Initialize all bits to zero.
Definition: NanoVDB.h:1846
nanovdb::Mask::setOn
void setOn(uint32_t n)
Set the given bit on.
Definition: NanoVDB.h:1920
nanovdb::PointAccessor
Class to access points at a specific voxel location.
Definition: NanoVDB.h:4721
nanovdb::PointAccessor::gridPoints
uint64_t gridPoints(const AttT *&begin, const AttT *&end) const
Return the total number of point in the grid and set the iterators to the complete range of points.
Definition: NanoVDB.h:4741
nanovdb::PointAccessor::LeafNodeType
typename NanoRoot< uint32_t >::LeafNodeType LeafNodeType
Definition: NanoVDB.h:4727
nanovdb::PointAccessor::leafPoints
uint64_t leafPoints(const Coord &ijk, const AttT *&begin, const AttT *&end) const
Return the number of points in the leaf node containing the coordinate ijk. If this return value is l...
Definition: NanoVDB.h:4751
nanovdb::PointAccessor::PointAccessor
PointAccessor(const UInt32Grid &grid)
Definition: NanoVDB.h:4729
nanovdb::PointAccessor::voxelPoints
uint64_t voxelPoints(const Coord &ijk, const AttT *&begin, const AttT *&end) const
get iterators over offsets to points at a specific voxel location
Definition: NanoVDB.h:4763
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::operator=
ReadAccessor & operator=(const ReadAccessor &)=default
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::~ReadAccessor
~ReadAccessor()=default
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::getNodeInfo
NodeInfo getNodeInfo(const CoordType &ijk) const
Definition: NanoVDB.h:4049
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::isActive
bool isActive(const CoordType &ijk) const
Definition: NanoVDB.h:4054
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Definition: NanoVDB.h:4059
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::CoordType
typename RootT::CoordType CoordType
Definition: NanoVDB.h:4019
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::ReadAccessor
ReadAccessor(const ReadAccessor &)=default
Defaults constructors.
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::root
const RootT & root() const
Definition: NanoVDB.h:4037
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::getValue
ValueType getValue(const CoordType &ijk) const
Definition: NanoVDB.h:4044
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::ValueType
typename RootT::ValueType ValueType
Definition: NanoVDB.h:4018
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::probeLeaf
const LeafT * probeLeaf(const CoordType &ijk) const
Definition: NanoVDB.h:4064
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::getDim
uint32_t getDim(const CoordType &ijk, const RayT &ray) const
Definition: NanoVDB.h:4070
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::ReadAccessor
ReadAccessor(const RootT &root)
Constructor from a root node.
Definition: NanoVDB.h:4035
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >
Node caching at all (three) tree levels.
Definition: NanoVDB.h:4432
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::operator=
ReadAccessor & operator=(const ReadAccessor &)=default
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::NodeInfo
typename ReadAccessor< ValueT, -1, -1, -1 >::NodeInfo NodeInfo
Definition: NanoVDB.h:4459
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::CoordType
CoordT CoordType
Definition: NanoVDB.h:4455
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::~ReadAccessor
~ReadAccessor()=default
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::getNodeInfo
NodeInfo getNodeInfo(const CoordType &ijk) const
Definition: NanoVDB.h:4533
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::ValueType
ValueT ValueType
Definition: NanoVDB.h:4454
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::isActive
bool isActive(const CoordType &ijk) const
Definition: NanoVDB.h:4550
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::getNode
const NodeT * getNode() const
Return a const point to the cached node of the specified type.
Definition: NanoVDB.h:4484
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Definition: NanoVDB.h:4567
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::ReadAccessor
ReadAccessor(const ReadAccessor &)=default
Defaults constructors.
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::root
const RootT & root() const
Definition: NanoVDB.h:4473
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::getValue
ValueType getValue(const CoordType &ijk) const
Definition: NanoVDB.h:4516
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::isCached
bool isCached(const CoordType &ijk) const
Definition: NanoVDB.h:4510
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::probeLeaf
const LeafT * probeLeaf(const CoordType &ijk) const
Definition: NanoVDB.h:4584
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::getDim
uint32_t getDim(const CoordType &ijk, const RayT &ray) const
Definition: NanoVDB.h:4602
nanovdb::ReadAccessor< BuildT, 0, 1, 2 >::ReadAccessor
ReadAccessor(const RootT &root)
Constructor from a root node.
Definition: NanoVDB.h:4462
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::operator=
ReadAccessor & operator=(const ReadAccessor &)=default
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::NodeInfo
typename ReadAccessor< ValueT, -1, -1, -1 >::NodeInfo NodeInfo
Definition: NanoVDB.h:4116
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::CoordType
CoordT CoordType
Definition: NanoVDB.h:4112
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::~ReadAccessor
~ReadAccessor()=default
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::isCached
bool isCached(const CoordType &ijk) const
Definition: NanoVDB.h:4133
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::getNodeInfo
NodeInfo getNodeInfo(const CoordType &ijk) const
Definition: NanoVDB.h:4148
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::ValueType
ValueT ValueType
Definition: NanoVDB.h:4111
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::isActive
bool isActive(const CoordType &ijk) const
Definition: NanoVDB.h:4156
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Definition: NanoVDB.h:4164
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::ReadAccessor
ReadAccessor(const ReadAccessor &)=default
Defaults constructors.
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::root
const RootT & root() const
Definition: NanoVDB.h:4126
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::getValue
ValueType getValue(const CoordType &ijk) const
Definition: NanoVDB.h:4140
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::probeLeaf
const LeafT * probeLeaf(const CoordType &ijk) const
Definition: NanoVDB.h:4172
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::getDim
uint32_t getDim(const CoordType &ijk, const RayT &ray) const
Definition: NanoVDB.h:4181
nanovdb::ReadAccessor< BuildT, LEVEL0, -1, -1 >::ReadAccessor
ReadAccessor(const RootT &root)
Constructor from a root node.
Definition: NanoVDB.h:4119
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::operator=
ReadAccessor & operator=(const ReadAccessor &)=default
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::CoordType
CoordT CoordType
Definition: NanoVDB.h:4239
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::~ReadAccessor
~ReadAccessor()=default
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::getNodeInfo
NodeInfo getNodeInfo(const CoordType &ijk) const
Definition: NanoVDB.h:4320
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::ValueType
ValueT ValueType
Definition: NanoVDB.h:4238
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::isActive
bool isActive(const CoordType &ijk) const
Definition: NanoVDB.h:4335
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Definition: NanoVDB.h:4350
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::NodeInfo
typename ReadAccessor< ValueT,-1,-1,-1 >::NodeInfo NodeInfo
Definition: NanoVDB.h:4243
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::isCached1
bool isCached1(const CoordType &ijk) const
Definition: NanoVDB.h:4291
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::ReadAccessor
ReadAccessor(const ReadAccessor &)=default
Defaults constructors.
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::root
const RootT & root() const
Definition: NanoVDB.h:4258
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::getValue
ValueType getValue(const CoordType &ijk) const
Definition: NanoVDB.h:4305
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::isCached2
bool isCached2(const CoordType &ijk) const
Definition: NanoVDB.h:4297
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::probeLeaf
const LeafT * probeLeaf(const CoordType &ijk) const
Definition: NanoVDB.h:4365
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::getDim
uint32_t getDim(const CoordType &ijk, const RayT &ray) const
Definition: NanoVDB.h:4381
nanovdb::ReadAccessor< BuildT, LEVEL0, LEVEL1, -1 >::ReadAccessor
ReadAccessor(const RootT &root)
Constructor from a root node.
Definition: NanoVDB.h:4246
nanovdb::ReadAccessor
Definition: NanoVDB.h:2297
nanovdb::Rgba8
8-bit red, green, blue, alpha packed into 32 bit unsigned int
Definition: NanoVDB.h:456
nanovdb::Rgba8::packed
const uint32_t & packed() const
Definition: NanoVDB.h:490
nanovdb::Rgba8::Rgba8
Rgba8(uint8_t r, uint8_t g, uint8_t b, uint8_t a=255u)
Definition: NanoVDB.h:470
nanovdb::Rgba8::operator=
Rgba8 & operator=(const Rgba8 &)=default
nanovdb::Rgba8::g
const uint8_t & g() const
Definition: NanoVDB.h:493
nanovdb::Rgba8::g
uint8_t & g()
Definition: NanoVDB.h:497
nanovdb::Rgba8::Rgba8
Rgba8(float r, float g, float b, float a=1.0f)
Definition: NanoVDB.h:472
nanovdb::Rgba8::packed
uint32_t packed
Definition: NanoVDB.h:459
nanovdb::Rgba8::a
const uint8_t & a() const
Definition: NanoVDB.h:495
nanovdb::Rgba8::operator<
bool operator<(const Rgba8 &rhs) const
Definition: NanoVDB.h:479
nanovdb::Rgba8::Rgba8
Rgba8(Rgba8 &&)=default
nanovdb::Rgba8::r
const uint8_t & r() const
Definition: NanoVDB.h:492
nanovdb::Rgba8::Rgba8
Rgba8()
Definition: NanoVDB.h:469
nanovdb::Rgba8::Rgba8
Rgba8(uint8_t v)
Definition: NanoVDB.h:471
nanovdb::Rgba8::lengthSqr
float lengthSqr() const
Definition: NanoVDB.h:481
nanovdb::Rgba8::operator=
Rgba8 & operator=(Rgba8 &&)=default
nanovdb::Rgba8::b
const uint8_t & b() const
Definition: NanoVDB.h:494
nanovdb::Rgba8::packed
uint32_t & packed()
Definition: NanoVDB.h:491
nanovdb::Rgba8::r
uint8_t & r()
Definition: NanoVDB.h:496
nanovdb::Rgba8::operator[]
uint8_t & operator[](int n)
Definition: NanoVDB.h:489
nanovdb::Rgba8::length
float length() const
Definition: NanoVDB.h:487
nanovdb::Rgba8::operator[]
const uint8_t & operator[](int n) const
Definition: NanoVDB.h:488
nanovdb::Rgba8::operator==
bool operator==(const Rgba8 &rhs) const
Definition: NanoVDB.h:480
nanovdb::Rgba8::ValueType
uint8_t ValueType
Definition: NanoVDB.h:463
nanovdb::Rgba8::Rgba8
Rgba8(const Rgba8 &)=default
nanovdb::Rgba8::b
uint8_t & b()
Definition: NanoVDB.h:498
nanovdb::Rgba8::c
uint8_t c[4]
Definition: NanoVDB.h:458
nanovdb::Rgba8::a
uint8_t & a()
Definition: NanoVDB.h:499
nanovdb::Rgba8::SIZE
static const int SIZE
Definition: NanoVDB.h:462
nanovdb::RootNode
Top-most node of the VDB tree structure.
Definition: NanoVDB.h:2799
nanovdb::RootNode::tileCount
const uint32_t & tileCount() const
Return the number of tiles encoded in this root node.
Definition: NanoVDB.h:2839
nanovdb::RootNode::memUsage
static uint64_t memUsage(uint32_t tableSize)
Return the expected memory footprint in bytes with the specified number of tiles.
Definition: NanoVDB.h:2857
nanovdb::RootNode::CoordType
typename ChildT::CoordType CoordType
Definition: NanoVDB.h:2810
nanovdb::RootNode::bbox
const BBox< CoordType > & bbox() const
Return a const reference to the index bounding box of all the active values in this tree,...
Definition: NanoVDB.h:2830
nanovdb::RootNode::variance
FloatType variance() const
Return the variance of all the active values encoded in this root node and any of its child nodes.
Definition: NanoVDB.h:2851
nanovdb::RootNode::average
const FloatType & average() const
Return a const reference to the average of all the active values encoded in this root node and any of...
Definition: NanoVDB.h:2848
nanovdb::RootNode::operator=
RootNode & operator=(const RootNode &)=delete
nanovdb::RootNode::data
DataType * data()
Definition: NanoVDB.h:2825
nanovdb::RootNode::getAccessor
AccessorType getAccessor() const
Definition: NanoVDB.h:2823
nanovdb::RootNode::BuildType
typename DataType::BuildT BuildType
Definition: NanoVDB.h:2808
nanovdb::RootNode::RootNode
RootNode(const RootNode &)=delete
nanovdb::RootNode::ChildNodeType
ChildT ChildNodeType
Definition: NanoVDB.h:2803
nanovdb::RootNode::probeLeaf
const LeafNodeType * probeLeaf(const CoordType &ijk) const
Definition: NanoVDB.h:2896
nanovdb::RootNode::isActive
bool isActive(const CoordType &ijk) const
Definition: NanoVDB.h:2871
nanovdb::RootNode::ValueType
typename DataType::ValueT ValueType
Definition: NanoVDB.h:2806
nanovdb::RootNode::FloatType
typename DataType::StatsT FloatType
Definition: NanoVDB.h:2807
nanovdb::RootNode::memUsage
uint64_t memUsage() const
Return the actual memory footprint of this root node.
Definition: NanoVDB.h:2860
nanovdb::RootNode::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Definition: NanoVDB.h:2882
nanovdb::RootNode::LeafNodeType
typename ChildT::LeafNodeType LeafNodeType
Definition: NanoVDB.h:2802
nanovdb::RootNode::stdDeviation
const FloatType & stdDeviation() const
Return a const reference to the standard deviation of all the active values encoded in this root node...
Definition: NanoVDB.h:2854
nanovdb::RootNode::maximum
const ValueType & maximum() const
Return a const reference to the maximum active value encoded in this root node and any of its child n...
Definition: NanoVDB.h:2845
nanovdb::RootNode::Tile
typename DataType::Tile Tile
Definition: NanoVDB.h:2812
nanovdb::RootNode::getValue
ValueType getValue(const CoordType &ijk) const
Return the value of the given voxel.
Definition: NanoVDB.h:2863
nanovdb::RootNode::background
const ValueType & background() const
Return the total number of active voxels in the root and all its child nodes.
Definition: NanoVDB.h:2836
nanovdb::RootNode::isEmpty
bool isEmpty() const
Return true if this RootNode is empty, i.e. contains no values or nodes.
Definition: NanoVDB.h:2880
nanovdb::RootNode::~RootNode
~RootNode()=delete
nanovdb::RootNode::RootNode
RootNode()=delete
This class cannot be constructed or deleted.
nanovdb::RootNode::minimum
const ValueType & minimum() const
Return a const reference to the minimum active value encoded in this root node and any of its child n...
Definition: NanoVDB.h:2842
nanovdb::RootNode::data
const DataType * data() const
Definition: NanoVDB.h:2827
nanovdb::Tree
VDB Tree, which is a thin wrapper around a RootNode.
Definition: NanoVDB.h:2543
nanovdb::Tree::Node2
typename RootT::ChildNodeType Node2
Definition: NanoVDB.h:2559
nanovdb::Tree::Node3
RootT Node3
Definition: NanoVDB.h:2558
nanovdb::Tree::getFirstNode
const NodeT * getFirstNode() const
return a const pointer to the first node of the specified type
Definition: NanoVDB.h:2642
nanovdb::Tree::activeVoxelCount
uint64_t activeVoxelCount() const
Return the total number of active voxels in this tree.
Definition: NanoVDB.h:2604
nanovdb::Tree::LeafNodeType
typename RootT::LeafNodeType LeafNodeType
Definition: NanoVDB.h:2552
nanovdb::Tree::bbox
const BBox< CoordType > & bbox() const
Return a const reference to the index bounding box of all the active values in this tree,...
Definition: NanoVDB.h:2601
nanovdb::Tree::data
DataType * data()
Definition: NanoVDB.h:2569
nanovdb::Tree::nodeCount
uint32_t nodeCount() const
Definition: NanoVDB.h:2616
nanovdb::Tree::Tree
Tree()=delete
This class cannot be constructed or deleted.
nanovdb::Tree::getAccessor
AccessorType getAccessor() const
Definition: NanoVDB.h:2580
nanovdb::Tree::isActive
bool isActive(const CoordType &ijk) const
Return the active state of the given voxel (regardless of state or location in the tree....
Definition: NanoVDB.h:2586
nanovdb::Tree::getFirstNode
NodeTrait< RootT, LEVEL >::type * getFirstNode()
return a pointer to the first node at the specified level
Definition: NanoVDB.h:2653
nanovdb::Tree::~Tree
~Tree()=delete
nanovdb::Tree::extrema
void extrema(ValueType &min, ValueType &max) const
Sets the extrema values of all the active values in this tree, i.e. in all nodes of the tree.
Definition: NanoVDB.h:2674
nanovdb::Tree::activeTileCount
const uint32_t & activeTileCount(uint32_t n) const
Return the total number of active tiles at the specified level of the tree.
Definition: NanoVDB.h:2609
nanovdb::Tree::probeValue
bool probeValue(const CoordType &ijk, ValueType &v) const
Combines the previous two methods in a single call.
Definition: NanoVDB.h:2592
nanovdb::Tree::CoordType
typename RootT::CoordType CoordType
Definition: NanoVDB.h:2555
nanovdb::Tree::root
RootT & root()
Definition: NanoVDB.h:2576
nanovdb::Tree::Tree
Tree(const Tree &)=delete
nanovdb::Tree::memUsage
static uint64_t memUsage()
return memory usage in bytes for the class
Definition: NanoVDB.h:2574
nanovdb::Tree::Node0
LeafNodeType Node0
Definition: NanoVDB.h:2561
nanovdb::Tree::getFirstNode
NodeT * getFirstNode()
return a pointer to the first node of the specified type
Definition: NanoVDB.h:2632
nanovdb::Tree::nodeCount
uint32_t nodeCount(int level) const
Definition: NanoVDB.h:2622
nanovdb::Tree::Node1
typename Node2::ChildNodeType Node1
Definition: NanoVDB.h:2560
nanovdb::Tree::getFirstNode
const NodeTrait< RootT, LEVEL >::type * getFirstNode() const
return a const pointer to the first node of the specified level
Definition: NanoVDB.h:2663
nanovdb::Tree::root
const RootT & root() const
Definition: NanoVDB.h:2578
nanovdb::Tree::getValue
ValueType getValue(const CoordType &ijk) const
Return the value of the given voxel (regardless of state or location in the tree.)
Definition: NanoVDB.h:2583
nanovdb::Tree::RootType
RootT RootType
Definition: NanoVDB.h:2551
nanovdb::Tree::background
const ValueType & background() const
Return a const reference to the background value.
Definition: NanoVDB.h:2595
nanovdb::Tree::isEmpty
bool isEmpty() const
Return true if this tree is empty, i.e. contains no values or nodes.
Definition: NanoVDB.h:2589
nanovdb::Tree::operator=
Tree & operator=(const Tree &)=delete
nanovdb::Tree::ValueType
typename RootT::ValueType ValueType
Definition: NanoVDB.h:2553
nanovdb::Tree::data
const DataType * data() const
Definition: NanoVDB.h:2571
nanovdb::Tree::BuildType
typename RootT::BuildType BuildType
Definition: NanoVDB.h:2554
nanovdb::ValueMask
Dummy type for a voxel with a binary mask value, e.g. the active state.
Definition: NanoVDB.h:189
nanovdb::Vec3< float >
nanovdb::Vec3::Vec3
Vec3(const Vec3< T2 > &v)
Definition: NanoVDB.h:1060
nanovdb::Vec3::round
Coord round() const
Definition: NanoVDB.h:1159
nanovdb::Vec3::Vec3
Vec3(T x)
Definition: NanoVDB.h:1051
nanovdb::Vec3::min
ValueType min() const
Return the smallest vector component.
Definition: NanoVDB.h:1148
nanovdb::Vec3::minComponent
Vec3 & minComponent(const Vec3 &other)
Perform a component-wise minimum with the other Coord.
Definition: NanoVDB.h:1125
nanovdb::Vec3::Vec3
Vec3(const Coord &ijk)
Definition: NanoVDB.h:1064
nanovdb::Vec3::operator==
bool operator==(const Vec3 &rhs) const
Definition: NanoVDB.h:1068
nanovdb::Vec3::operator-
Vec3 operator-() const
Definition: NanoVDB.h:1094
nanovdb::Vec3::length
T length() const
Definition: NanoVDB.h:1093
nanovdb::Vec3::operator*
Vec3 operator*(const Vec3 &v) const
Definition: NanoVDB.h:1095
nanovdb::Vec3::maxComponent
Vec3 & maxComponent(const Vec3 &other)
Perform a component-wise maximum with the other Coord.
Definition: NanoVDB.h:1137
nanovdb::Vec3::operator-=
Vec3 & operator-=(const Vec3 &v)
Definition: NanoVDB.h:1108
nanovdb::Vec3::floor
Coord floor() const
Definition: NanoVDB.h:1157
nanovdb::Vec3::operator*
Vec3 operator*(const T &s) const
Definition: NanoVDB.h:1099
nanovdb::Vec3::Vec3
Vec3(T x, T y, T z)
Definition: NanoVDB.h:1055
nanovdb::Vec3::operator/
Vec3 operator/(const Vec3 &v) const
Definition: NanoVDB.h:1096
nanovdb::Vec3::dot
T dot(const Vec3T &v) const
Definition: NanoVDB.h:1081
nanovdb::Vec3::operator=
Vec3 & operator=(const Vec3T &rhs)
Definition: NanoVDB.h:1071
nanovdb::Vec3::operator*=
Vec3 & operator*=(const T &s)
Definition: NanoVDB.h:1115
nanovdb::Vec3::normalize
Vec3 & normalize()
Definition: NanoVDB.h:1123
nanovdb::Vec3::lengthSqr
T lengthSqr() const
Definition: NanoVDB.h:1089
nanovdb::Vec3::operator+=
Vec3 & operator+=(const Vec3 &v)
Definition: NanoVDB.h:1101
nanovdb::Vec3::ceil
Coord ceil() const
Definition: NanoVDB.h:1158
nanovdb::Vec3::Vec3
Vec3()=default
nanovdb::Vec3::operator[]
const T & operator[](int i) const
Definition: NanoVDB.h:1078
nanovdb::Vec3::cross
Vec3 cross(const Vec3T &v) const
Definition: NanoVDB.h:1083
nanovdb::Vec3::operator/
Vec3 operator/(const T &s) const
Definition: NanoVDB.h:1100
nanovdb::Vec3::operator!=
bool operator!=(const Vec3 &rhs) const
Definition: NanoVDB.h:1069
nanovdb::Vec3::operator+
Vec3 operator+(const Vec3 &v) const
Definition: NanoVDB.h:1097
nanovdb::Vec3::operator[]
T & operator[](int i)
Definition: NanoVDB.h:1079
nanovdb::Vec3::operator-
Vec3 operator-(const Vec3 &v) const
Definition: NanoVDB.h:1098
nanovdb::Vec3::max
ValueType max() const
Return the largest vector component.
Definition: NanoVDB.h:1153
nanovdb::Vec3::operator/=
Vec3 & operator/=(const T &s)
Definition: NanoVDB.h:1122
nanovdb::Vec3::ValueType
T ValueType
Definition: NanoVDB.h:1049
nanovdb::Vec3::SIZE
static const int SIZE
Definition: NanoVDB.h:1048
nanovdb::Vec4
A simple vector class with three double components, similar to openvdb::math::Vec4.
Definition: NanoVDB.h:1189
nanovdb::Vec4::normalize
Vec4 & normalize()
Definition: NanoVDB.h:1261
nanovdb::Vec4::operator/=
Vec4 & operator/=(const T &s)
Definition: NanoVDB.h:1260
nanovdb::Vec4::operator/
Vec4 operator/(const Vec4 &v) const
Definition: NanoVDB.h:1231
nanovdb::Vec4::operator+=
Vec4 & operator+=(const Vec4 &v)
Definition: NanoVDB.h:1236
nanovdb::Vec4::operator*
Vec4 operator*(const T &s) const
Definition: NanoVDB.h:1234
nanovdb::Vec4::length
T length() const
Definition: NanoVDB.h:1228
nanovdb::Vec4::operator-
Vec4 operator-(const Vec4 &v) const
Definition: NanoVDB.h:1233
nanovdb::Vec4::operator*=
Vec4 & operator*=(const T &s)
Definition: NanoVDB.h:1252
nanovdb::Vec4::operator*
Vec4 operator*(const Vec4 &v) const
Definition: NanoVDB.h:1230
nanovdb::Vec4::Vec4
Vec4(T x, T y, T z, T w)
Definition: NanoVDB.h:1200
nanovdb::Vec4::operator!=
bool operator!=(const Vec4 &rhs) const
Definition: NanoVDB.h:1210
nanovdb::Vec4::maxComponent
Vec4 & maxComponent(const Vec4 &other)
Perform a component-wise maximum with the other Coord.
Definition: NanoVDB.h:1277
nanovdb::Vec4::Vec4
Vec4(const Vec4< T2 > &v)
Definition: NanoVDB.h:1205
nanovdb::Vec4::lengthSqr
T lengthSqr() const
Definition: NanoVDB.h:1224
nanovdb::Vec4::operator[]
const T & operator[](int i) const
Definition: NanoVDB.h:1220
nanovdb::Vec4::operator=
Vec4 & operator=(const Vec4T &rhs)
Definition: NanoVDB.h:1212
nanovdb::Vec4::operator-=
Vec4 & operator-=(const Vec4 &v)
Definition: NanoVDB.h:1244
nanovdb::Vec4::Vec4
Vec4()=default
nanovdb::Vec4::operator==
bool operator==(const Vec4 &rhs) const
Definition: NanoVDB.h:1209
nanovdb::Vec4::minComponent
Vec4 & minComponent(const Vec4 &other)
Perform a component-wise minimum with the other Coord.
Definition: NanoVDB.h:1263
nanovdb::Vec4::operator[]
T & operator[](int i)
Definition: NanoVDB.h:1221
nanovdb::Vec4::operator-
Vec4 operator-() const
Definition: NanoVDB.h:1229
nanovdb::Vec4::operator/
Vec4 operator/(const T &s) const
Definition: NanoVDB.h:1235
nanovdb::Vec4::dot
T dot(const Vec4T &v) const
Definition: NanoVDB.h:1223
nanovdb::Vec4::ValueType
T ValueType
Definition: NanoVDB.h:1194
nanovdb::Vec4::Vec4
Vec4(T x)
Definition: NanoVDB.h:1196
nanovdb::Vec4::SIZE
static const int SIZE
Definition: NanoVDB.h:1193
nanovdb::Vec4::operator+
Vec4 operator+(const Vec4 &v) const
Definition: NanoVDB.h:1232
nanovdb::Version
Bit-compacted representation of all three version numbers.
Definition: NanoVDB.h:541
nanovdb::Version::c_str
const char * c_str() const
Definition: NanoVDB.h:567
nanovdb::Version::operator<
bool operator<(const Version &rhs) const
Definition: NanoVDB.h:557
nanovdb::Version::getPatch
uint32_t getPatch() const
Definition: NanoVDB.h:564
nanovdb::Version::operator<=
bool operator<=(const Version &rhs) const
Definition: NanoVDB.h:558
nanovdb::Version::Version
Version()
Definition: NanoVDB.h:544
nanovdb::Version::operator==
bool operator==(const Version &rhs) const
Definition: NanoVDB.h:556
nanovdb::Version::Version
Version(uint32_t major, uint32_t minor, uint32_t patch)
Definition: NanoVDB.h:549
nanovdb::Version::getMajor
uint32_t getMajor() const
Definition: NanoVDB.h:562
nanovdb::Version::operator>=
bool operator>=(const Version &rhs) const
Definition: NanoVDB.h:560
nanovdb::Version::getMinor
uint32_t getMinor() const
Definition: NanoVDB.h:563
nanovdb::Version::id
uint32_t id() const
Definition: NanoVDB.h:561
nanovdb::Version::operator>
bool operator>(const Version &rhs) const
Definition: NanoVDB.h:559
nanovdb
Definition: NanoVDB.h:184
nanovdb::isValid
bool isValid(GridType gridType, GridClass gridClass)
return true if the combination of GridType and GridClass is valid.
Definition: NanoVDB.h:520
nanovdb::Pow4
T Pow4(T x)
Definition: NanoVDB.h:742
nanovdb::mapToGridType
GridType mapToGridType()
Maps from a templated value type to a GridType enum.
Definition: NanoVDB.h:1366
nanovdb::createAccessor
ReadAccessor< ValueT, LEVEL0, LEVEL1, LEVEL2 > createAccessor(const NanoGrid< ValueT > &grid)
Free-standing function for convenient creation of a ReadAccessor with optional and customizable node ...
Definition: NanoVDB.h:4656
nanovdb::PtrAdd
static DstT * PtrAdd(SrcT *p, int64_t offset)
Definition: NanoVDB.h:440
nanovdb::Clamp
float Clamp(float x, float a, float b)
Definition: NanoVDB.h:693
nanovdb::Floor
int32_t Floor(float x)
Definition: NanoVDB.h:711
nanovdb::MinIndex
int MinIndex(const Vec3T &v)
Definition: NanoVDB.h:810
nanovdb::Vec3f
Vec3< float > Vec3f
Definition: NanoVDB.h:1175
nanovdb::RoundDown
CoordT RoundDown(const Vec3T< RealT > &xyz)
Definition: NanoVDB.h:788
nanovdb::GridClass
GridClass
Classes (defined in OpenVDB) that are currently supported by NanoVDB.
Definition: NanoVDB.h:253
nanovdb::GridClass::FogVolume
@ FogVolume
nanovdb::GridClass::VoxelVolume
@ VoxelVolume
nanovdb::GridClass::End
@ End
nanovdb::GridClass::Unknown
@ Unknown
nanovdb::GridClass::Topology
@ Topology
nanovdb::GridClass::PointIndex
@ PointIndex
nanovdb::GridClass::PointData
@ PointData
nanovdb::GridClass::Staggered
@ Staggered
nanovdb::GridClass::LevelSet
@ LevelSet
nanovdb::GridType
GridType
List of types that are currently supported by NanoVDB.
Definition: NanoVDB.h:216
nanovdb::GridType::Float
@ Float
nanovdb::GridType::Boolean
@ Boolean
nanovdb::GridType::Vec4f
@ Vec4f
nanovdb::GridType::Int16
@ Int16
nanovdb::GridType::Fp4
@ Fp4
nanovdb::GridType::Mask
@ Mask
nanovdb::GridType::Vec4d
@ Vec4d
nanovdb::GridType::Fp8
@ Fp8
nanovdb::GridType::End
@ End
nanovdb::GridType::Unknown
@ Unknown
nanovdb::GridType::FpN
@ FpN
nanovdb::GridType::RGBA8
@ RGBA8
nanovdb::GridType::Int32
@ Int32
nanovdb::GridType::Vec3d
@ Vec3d
nanovdb::GridType::Double
@ Double
nanovdb::GridType::UInt32
@ UInt32
nanovdb::GridType::Vec3f
@ Vec3f
nanovdb::GridType::Int64
@ Int64
nanovdb::GridType::Fp16
@ Fp16
nanovdb::CountOn
uint32_t CountOn(uint64_t v)
Definition: NanoVDB.h:1774
nanovdb::matMult
Vec3T matMult(const float *mat, const Vec3T &xyz)
Definition: NanoVDB.h:1409
nanovdb::Min
Type Min(Type a, Type b)
Definition: NanoVDB.h:651
nanovdb::GridFlags
GridFlags
Grid flags which indicate what extra information is present in the grid buffer.
Definition: NanoVDB.h:277
nanovdb::GridFlags::HasAverage
@ HasAverage
nanovdb::GridFlags::HasStdDeviation
@ HasStdDeviation
nanovdb::GridFlags::HasLongGridName
@ HasLongGridName
nanovdb::GridFlags::HasMinMax
@ HasMinMax
nanovdb::GridFlags::End
@ End
nanovdb::GridFlags::HasBBox
@ HasBBox
nanovdb::GridFlags::IsBreadthFirst
@ IsBreadthFirst
nanovdb::FindHighestOn
static uint32_t FindHighestOn(uint32_t v)
Returns the index of the highest, i.e. most significant, on bit in the specified 32 bit word.
Definition: NanoVDB.h:1696
nanovdb::Sqrt
float Sqrt(float x)
Return the square root of a floating-point value.
Definition: NanoVDB.h:795
nanovdb::operator*
Vec3< T2 > operator*(T1 scalar, const Vec3< T2 > &vec)
Definition: NanoVDB.h:1163
nanovdb::Pow3
T Pow3(T x)
Definition: NanoVDB.h:736
nanovdb::GridBlindDataClass
GridBlindDataClass
Blind-data Classes that are currently supported by NanoVDB.
Definition: NanoVDB.h:306
nanovdb::GridBlindDataClass::AttributeArray
@ AttributeArray
nanovdb::GridBlindDataClass::GridName
@ GridName
nanovdb::Fract
float Fract(float x)
Definition: NanoVDB.h:702
nanovdb::matMultT
Vec3T matMultT(const float *mat, const Vec3T &xyz)
Definition: NanoVDB.h:1443
nanovdb::Vec3d
Vec3< double > Vec3d
Definition: NanoVDB.h:1174
nanovdb::operator/
Vec3< T2 > operator/(T1 scalar, const Vec3< T2 > &vec)
Definition: NanoVDB.h:1168
nanovdb::toStr
const char * toStr(GridType gridType)
Retuns a c-string used to describe a GridType.
Definition: NanoVDB.h:239
nanovdb::PtrDiff
static int64_t PtrDiff(const T1 *p, const T2 *q)
Definition: NanoVDB.h:433
nanovdb::Sign
T Sign(const T &x)
Return the sign of the given value as an integer (either -1, 0 or 1).
Definition: NanoVDB.h:807
nanovdb::Max
Type Max(Type a, Type b)
Definition: NanoVDB.h:672
nanovdb::Abs
T Abs(T x)
Definition: NanoVDB.h:747
nanovdb::GridBlindDataSemantic
GridBlindDataSemantic
Blind-data Semantics that are currently understood by NanoVDB.
Definition: NanoVDB.h:313
nanovdb::GridBlindDataSemantic::PointRadius
@ PointRadius
nanovdb::GridBlindDataSemantic::PointPosition
@ PointPosition
nanovdb::GridBlindDataSemantic::PointColor
@ PointColor
nanovdb::GridBlindDataSemantic::PointVelocity
@ PointVelocity
nanovdb::GridBlindDataSemantic::PointNormal
@ PointNormal
nanovdb::GridBlindDataSemantic::PointId
@ PointId
nanovdb::Round
CoordT Round(const Vec3T< RealT > &xyz)
nanovdb::isFloatingPoint
bool isFloatingPoint(GridType gridType)
return true if the GridType maps to a floating point value.
Definition: NanoVDB.h:507
nanovdb::Ceil
int32_t Ceil(float x)
Definition: NanoVDB.h:720
nanovdb::isApproxZero
bool isApproxZero(const Type &x)
Definition: NanoVDB.h:645
nanovdb::MaxIndex
int MaxIndex(const Vec3T &v)
Definition: NanoVDB.h:827
nanovdb::Pow2
T Pow2(T x)
Definition: NanoVDB.h:730
nanovdb::AlignUp
uint64_t AlignUp(uint64_t byteCount)
round up byteSize to the nearest wordSize, e.g. to align to machine word: AlignUp<sizeof(size_t)(n)
Definition: NanoVDB.h:847
nanovdb::FindLowestOn
static uint32_t FindLowestOn(uint32_t v)
Returns the index of the lowest, i.e. least significant, on bit in the specified 32 bit word.
Definition: NanoVDB.h:1667
openvdb::v9_0::tools::composite::max
const std::enable_if<!VecTraits< T >::IsVec, T >::type & max(const T &a, const T &b)
Definition: Composite.h:107
openvdb::v9_0::tools::composite::min
const std::enable_if<!VecTraits< T >::IsVec, T >::type & min(const T &a, const T &b)
Definition: Composite.h:103
openvdb::v9_0::tools::extrema
math::Extrema extrema(const IterT &iter, bool threaded=true)
Iterate over a scalar grid and compute extrema (min/max) of the values of the voxels that are visited...
Definition: Statistics.h:354
nanovdb::BBox< CoordT, false >::begin
Iterator begin() const
Definition: NanoVDB.h:1610
nanovdb::BBox< CoordT, false >::BBox
BBox()
Definition: NanoVDB.h:1611
nanovdb::BBox< CoordT, false >::is_divisible
bool is_divisible() const
Definition: NanoVDB.h:1628
nanovdb::BBox< CoordT, false >::BBox
BBox(const CoordT &min, const CoordT &max)
Definition: NanoVDB.h:1615
nanovdb::BBox< CoordT, false >::dim
CoordT dim() const
Definition: NanoVDB.h:1635
nanovdb::BBox< CoordT, false >::empty
bool empty() const
Return true if this bounding box is empty, i.e. uninitialized.
Definition: NanoVDB.h:1632
nanovdb::BBox< CoordT, false >::expandBy
BBox expandBy(typename CoordT::ValueType padding) const
Return a new instance that is expanded by the specified padding.
Definition: NanoVDB.h:1652
nanovdb::BBox< CoordT, false >::isInside
bool isInside(const BBox &b) const
Definition: NanoVDB.h:1638
nanovdb::BBox< CoordT, false >::volume
uint64_t volume() const
Definition: NanoVDB.h:1636
nanovdb::BBox< CoordT, false >::BBox
BBox(BBox &other, const SplitT &)
Definition: NanoVDB.h:1620
nanovdb::BBox< CoordT, false >::asReal
BBox< Vec3< RealT > > asReal() const
Definition: NanoVDB.h:1645
nanovdb::BBox< CoordT, false >::isInside
bool isInside(const CoordT &p) const
Definition: NanoVDB.h:1637
nanovdb::BBox< Vec3T, true >::dim
Vec3T dim() const
Definition: NanoVDB.h:1556
nanovdb::BBox< Vec3T, true >::isInside
bool isInside(const Vec3T &p) const
Definition: NanoVDB.h:1557
nanovdb::BBox< Vec3T, true >::BBox
BBox()
Definition: NanoVDB.h:1538
nanovdb::BBox< Vec3T, true >::BBox
BBox(const Coord &min, const Coord &max)
Definition: NanoVDB.h:1547
nanovdb::BBox< Vec3T, true >::empty
bool empty() const
Definition: NanoVDB.h:1553
nanovdb::BBox< Vec3T, true >::BBox
BBox(const Vec3T &min, const Vec3T &max)
Definition: NanoVDB.h:1543
nanovdb::BBox< Vec3T, true >::Vec3Type
Vec3T Vec3Type
Definition: NanoVDB.h:1533
nanovdb::BBox< Vec3T, true >::ValueType
typename Vec3T::ValueType ValueType
Definition: NanoVDB.h:1534
nanovdb::BBox< Vec3T, true >::BBox
BBox(const BaseBBox< Coord > &bbox)
Definition: NanoVDB.h:1552
nanovdb::BBox
Definition: NanoVDB.h:1524
nanovdb::BaseBBox
Definition: NanoVDB.h:1479
nanovdb::BaseBBox::mCoord
Vec3T mCoord[2]
Definition: NanoVDB.h:1480
nanovdb::BaseBBox::BaseBBox
BaseBBox()
Definition: NanoVDB.h:1516
nanovdb::BaseBBox::max
const Vec3T & max() const
Definition: NanoVDB.h:1488
nanovdb::BaseBBox::translate
Coord & translate(const Vec3T &xyz)
Definition: NanoVDB.h:1489
nanovdb::BaseBBox::expand
BaseBBox & expand(const Vec3T &xyz)
Definition: NanoVDB.h:1496
nanovdb::BaseBBox::operator!=
bool operator!=(const BaseBBox &rhs) const
Definition: NanoVDB.h:1482
nanovdb::BaseBBox::operator[]
const Vec3T & operator[](int i) const
Definition: NanoVDB.h:1483
nanovdb::BaseBBox::operator[]
Vec3T & operator[](int i)
Definition: NanoVDB.h:1484
nanovdb::BaseBBox::isInside
bool isInside(const Vec3T &xyz)
Definition: NanoVDB.h:1506
nanovdb::BaseBBox::min
const Vec3T & min() const
Definition: NanoVDB.h:1487
nanovdb::BaseBBox::BaseBBox
BaseBBox(const Vec3T &min, const Vec3T &max)
Definition: NanoVDB.h:1517
nanovdb::BaseBBox::min
Vec3T & min()
Definition: NanoVDB.h:1485
nanovdb::BaseBBox::operator==
bool operator==(const BaseBBox &rhs) const
Definition: NanoVDB.h:1481
nanovdb::BaseBBox::max
Vec3T & max()
Definition: NanoVDB.h:1486
nanovdb::BuildToValueMap< Fp16 >::type
float type
Definition: NanoVDB.h:420
nanovdb::BuildToValueMap< Fp16 >::Type
float Type
Definition: NanoVDB.h:419
nanovdb::BuildToValueMap< Fp4 >::type
float type
Definition: NanoVDB.h:406
nanovdb::BuildToValueMap< Fp4 >::Type
float Type
Definition: NanoVDB.h:405
nanovdb::BuildToValueMap< Fp8 >::type
float type
Definition: NanoVDB.h:413
nanovdb::BuildToValueMap< Fp8 >::Type
float Type
Definition: NanoVDB.h:412
nanovdb::BuildToValueMap< FpN >::type
float type
Definition: NanoVDB.h:427
nanovdb::BuildToValueMap< FpN >::Type
float Type
Definition: NanoVDB.h:426
nanovdb::BuildToValueMap< Half >::type
float type
Definition: NanoVDB.h:399
nanovdb::BuildToValueMap< Half >::Type
float Type
Definition: NanoVDB.h:398
nanovdb::BuildToValueMap< ValueMask >::Type
bool Type
Definition: NanoVDB.h:391
nanovdb::BuildToValueMap< ValueMask >::type
bool type
Definition: NanoVDB.h:392
nanovdb::BuildToValueMap
Maps one type (e.g. the build types above) to other (actual) types.
Definition: NanoVDB.h:383
nanovdb::BuildToValueMap::Type
T Type
Definition: NanoVDB.h:384
nanovdb::BuildToValueMap::type
T type
Definition: NanoVDB.h:385
nanovdb::Delta< double >::value
static double value()
Definition: NanoVDB.h:606
nanovdb::Delta< float >::value
static float value()
Definition: NanoVDB.h:601
nanovdb::Delta
Delta for small floating-point offsets.
Definition: NanoVDB.h:597
nanovdb::FloatTraits< T, 8 >::FloatType
double FloatType
Definition: NanoVDB.h:1347
nanovdb::FloatTraits< ValueMask, 1 >::FloatType
bool FloatType
Definition: NanoVDB.h:1359
nanovdb::FloatTraits< bool, 1 >::FloatType
bool FloatType
Definition: NanoVDB.h:1353
nanovdb::FloatTraits
Definition: NanoVDB.h:1340
nanovdb::FloatTraits::FloatType
float FloatType
Definition: NanoVDB.h:1341
nanovdb::GridBlindMetaData
Definition: NanoVDB.h:2068
nanovdb::GridBlindMetaData::mFlags
uint32_t mFlags
Definition: NanoVDB.h:2072
nanovdb::GridBlindMetaData::memUsage
static uint64_t memUsage(uint64_t blindDataCount=0)
return memory usage in bytes for the class (note this computes for all blindMetaData structures....
Definition: NanoVDB.h:2079
nanovdb::GridBlindMetaData::setBlindData
void setBlindData(void *ptr)
Definition: NanoVDB.h:2084
nanovdb::GridBlindMetaData::mDataType
GridType mDataType
Definition: NanoVDB.h:2075
nanovdb::GridBlindMetaData::mSemantic
GridBlindDataSemantic mSemantic
Definition: NanoVDB.h:2073
nanovdb::GridBlindMetaData::mByteOffset
int64_t mByteOffset
Definition: NanoVDB.h:2070
nanovdb::GridBlindMetaData::mDataClass
GridBlindDataClass mDataClass
Definition: NanoVDB.h:2074
nanovdb::GridBlindMetaData::mElementCount
uint64_t mElementCount
Definition: NanoVDB.h:2071
nanovdb::GridBlindMetaData::getBlindData
const T * getBlindData() const
Definition: NanoVDB.h:2087
nanovdb::GridData
Struct with all the member data of the Grid (useful during serialization of an openvdb grid)
Definition: NanoVDB.h:2185
nanovdb::GridData::mFlags
uint32_t mFlags
Definition: NanoVDB.h:2190
nanovdb::GridData::treePtr
const void * treePtr() const
Definition: NanoVDB.h:2282
nanovdb::GridData::setMinMaxOn
void setMinMaxOn(bool on=true)
Definition: NanoVDB.h:2206
nanovdb::GridData::setAverageOn
void setAverageOn(bool on=true)
Definition: NanoVDB.h:2230
nanovdb::GridData::applyInverseJacobianF
Vec3T applyInverseJacobianF(const Vec3T &xyz) const
Definition: NanoVDB.h:2274
nanovdb::GridData::applyIJTF
Vec3T applyIJTF(const Vec3T &xyz) const
Definition: NanoVDB.h:2276
nanovdb::GridData::mBlindMetadataCount
uint32_t mBlindMetadataCount
Definition: NanoVDB.h:2201
nanovdb::GridData::mVersion
Version mVersion
Definition: NanoVDB.h:2189
nanovdb::GridData::mGridType
GridType mGridType
Definition: NanoVDB.h:2199
nanovdb::GridData::mMagic
uint64_t mMagic
Definition: NanoVDB.h:2187
nanovdb::GridData::setStdDeviationOn
void setStdDeviationOn(bool on=true)
Definition: NanoVDB.h:2238
nanovdb::GridData::applyIJT
Vec3T applyIJT(const Vec3T &xyz) const
Definition: NanoVDB.h:2265
nanovdb::GridData::mGridClass
GridClass mGridClass
Definition: NanoVDB.h:2198
nanovdb::GridData::setBBoxOn
void setBBoxOn(bool on=true)
Definition: NanoVDB.h:2214
nanovdb::GridData::setLongGridNameOn
void setLongGridNameOn(bool on=true)
Definition: NanoVDB.h:2222
nanovdb::GridData::applyJacobianF
Vec3T applyJacobianF(const Vec3T &xyz) const
Definition: NanoVDB.h:2272
nanovdb::GridData::mGridSize
uint64_t mGridSize
Definition: NanoVDB.h:2193
nanovdb::GridData::mWorldBBox
BBox< Vec3R > mWorldBBox
Definition: NanoVDB.h:2196
nanovdb::GridData::applyInverseJacobian
Vec3T applyInverseJacobian(const Vec3T &xyz) const
Definition: NanoVDB.h:2263
nanovdb::GridData::treePtr
void * treePtr()
Definition: NanoVDB.h:2279
nanovdb::GridData::blindMetaData
const GridBlindMetaData * blindMetaData(uint32_t n) const
Returns a const reference to the blindMetaData at the specified linear offset.
Definition: NanoVDB.h:2287
nanovdb::GridData::setBreadthFirstOn
void setBreadthFirstOn(bool on=true)
Definition: NanoVDB.h:2246
nanovdb::GridData::mChecksum
uint64_t mChecksum
Definition: NanoVDB.h:2188
nanovdb::GridData::applyMapF
Vec3T applyMapF(const Vec3T &xyz) const
Definition: NanoVDB.h:2268
nanovdb::GridData::mGridCount
uint32_t mGridCount
Definition: NanoVDB.h:2192
nanovdb::GridData::mVoxelSize
Vec3R mVoxelSize
Definition: NanoVDB.h:2197
nanovdb::GridData::applyInverseMap
Vec3T applyInverseMap(const Vec3T &xyz) const
Definition: NanoVDB.h:2259
nanovdb::GridData::mMap
Map mMap
Definition: NanoVDB.h:2195
nanovdb::GridData::applyJacobian
Vec3T applyJacobian(const Vec3T &xyz) const
Definition: NanoVDB.h:2261
nanovdb::GridData::setFlagsOff
void setFlagsOff()
Definition: NanoVDB.h:2205
nanovdb::GridData::mBlindMetadataOffset
int64_t mBlindMetadataOffset
Definition: NanoVDB.h:2200
nanovdb::GridData::mGridIndex
uint32_t mGridIndex
Definition: NanoVDB.h:2191
nanovdb::GridData::applyMap
Vec3T applyMap(const Vec3T &xyz) const
Definition: NanoVDB.h:2257
nanovdb::GridData::applyInverseMapF
Vec3T applyInverseMapF(const Vec3T &xyz) const
Definition: NanoVDB.h:2270
nanovdb::GridTree< const GridT >::Type
const typename GridT::TreeType Type
Definition: NanoVDB.h:2534
nanovdb::GridTree< const GridT >::type
const typename GridT::TreeType type
Definition: NanoVDB.h:2535
nanovdb::GridTree
defines a tree type from a grid type while perserving constness
Definition: NanoVDB.h:2527
nanovdb::GridTree::Type
typename GridT::TreeType Type
Definition: NanoVDB.h:2528
nanovdb::GridTree::type
typename GridT::TreeType type
Definition: NanoVDB.h:2529
nanovdb::InternalData
Struct with all the member data of the InternalNode (useful during serialization of an openvdb Intern...
Definition: NanoVDB.h:3043
nanovdb::InternalData::setOrigin
void setOrigin(const T &ijk)
Definition: NanoVDB.h:3099
nanovdb::InternalData::mAverage
StatsT mAverage
Definition: NanoVDB.h:3069
nanovdb::InternalData::CoordT
typename ChildT::CoordType CoordT
Definition: NanoVDB.h:3047
nanovdb::InternalData::setChild
void setChild(uint32_t n, const void *ptr)
Definition: NanoVDB.h:3073
nanovdb::InternalData::~InternalData
~InternalData()=delete
nanovdb::InternalData::mChildMask
MaskT mChildMask
Definition: NanoVDB.h:3065
nanovdb::InternalData::setValue
void setValue(uint32_t n, const ValueT &v)
Definition: NanoVDB.h:3080
nanovdb::InternalData::InternalData
InternalData(const InternalData &)=delete
nanovdb::InternalData::getMax
const ValueT & getMax() const
Definition: NanoVDB.h:3102
nanovdb::InternalData::setDev
void setDev(const StatsT &v)
Definition: NanoVDB.h:3109
nanovdb::InternalData::getChild
const ChildT * getChild(uint32_t n) const
Definition: NanoVDB.h:3092
nanovdb::InternalData::setMin
void setMin(const ValueT &v)
Definition: NanoVDB.h:3106
nanovdb::InternalData::StatsT
typename ChildT::FloatType StatsT
Definition: NanoVDB.h:3046
nanovdb::InternalData::BuildT
typename ChildT::BuildType BuildT
Definition: NanoVDB.h:3045
nanovdb::InternalData::getMin
const ValueT & getMin() const
Definition: NanoVDB.h:3101
nanovdb::InternalData::setMax
void setMax(const ValueT &v)
Definition: NanoVDB.h:3107
nanovdb::InternalData::mStdDevi
StatsT mStdDevi
Definition: NanoVDB.h:3070
nanovdb::InternalData::mBBox
BBox< CoordT > mBBox
Definition: NanoVDB.h:3062
nanovdb::InternalData::getChild
ChildT * getChild(uint32_t n)
Returns a pointer to the child node at the specifed linear offset.
Definition: NanoVDB.h:3087
nanovdb::InternalData::mMaximum
ValueT mMaximum
Definition: NanoVDB.h:3068
nanovdb::InternalData::stdDeviation
const StatsT & stdDeviation() const
Definition: NanoVDB.h:3104
nanovdb::InternalData::average
const StatsT & average() const
Definition: NanoVDB.h:3103
nanovdb::InternalData::mValueMask
MaskT mValueMask
Definition: NanoVDB.h:3064
nanovdb::InternalData::MaskT
typename ChildT::template MaskType< LOG2DIM > MaskT
Definition: NanoVDB.h:3048
nanovdb::InternalData::operator=
InternalData & operator=(const InternalData &)=delete
nanovdb::InternalData::setAvg
void setAvg(const StatsT &v)
Definition: NanoVDB.h:3108
nanovdb::InternalData::ValueT
typename ChildT::ValueType ValueT
Definition: NanoVDB.h:3044
nanovdb::InternalData::mMinimum
ValueT mMinimum
Definition: NanoVDB.h:3067
nanovdb::InternalData::InternalData
InternalData()=delete
This class cannot be constructed or deleted.
nanovdb::InternalData::mFlags
uint64_t mFlags
Definition: NanoVDB.h:3063
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::bitWidth
static constexpr uint8_t bitWidth()
Definition: NanoVDB.h:3520
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::~LeafData
~LeafData()=delete
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::getValue
float getValue(uint32_t i) const
Definition: NanoVDB.h:3521
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::ArrayType
uint16_t ArrayType
Definition: NanoVDB.h:3516
nanovdb::LeafData< Fp16, CoordT, MaskT, LOG2DIM >::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::bitWidth
static constexpr uint8_t bitWidth()
Definition: NanoVDB.h:3470
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::~LeafData
~LeafData()=delete
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::getValue
float getValue(uint32_t i) const
Definition: NanoVDB.h:3471
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData< Fp4, CoordT, MaskT, LOG2DIM >::ArrayType
uint8_t ArrayType
Definition: NanoVDB.h:3466
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::bitWidth
static constexpr uint8_t bitWidth()
Definition: NanoVDB.h:3498
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::~LeafData
~LeafData()=delete
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::getValue
float getValue(uint32_t i) const
Definition: NanoVDB.h:3499
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData< Fp8, CoordT, MaskT, LOG2DIM >::ArrayType
uint8_t ArrayType
Definition: NanoVDB.h:3494
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::memUsage
size_t memUsage() const
Definition: NanoVDB.h:3542
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::~LeafData
~LeafData()=delete
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::getValue
float getValue(uint32_t i) const
Definition: NanoVDB.h:3544
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::bitWidth
uint8_t bitWidth() const
Definition: NanoVDB.h:3541
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData< FpN, CoordT, MaskT, LOG2DIM >::memUsage
static size_t memUsage(uint32_t bitWidth)
Definition: NanoVDB.h:3543
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::setOrigin
void setOrigin(const T &ijk)
Definition: NanoVDB.h:3669
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::getDev
bool getDev() const
Definition: NanoVDB.h:3657
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::getMin
bool getMin() const
Definition: NanoVDB.h:3654
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::~LeafData
~LeafData()=delete
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::setMax
void setMax(const ValueType &)
Definition: NanoVDB.h:3664
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::getValue
bool getValue(uint32_t i) const
Definition: NanoVDB.h:3653
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::mFlags
uint8_t mFlags
Definition: NanoVDB.h:3649
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::getMax
bool getMax() const
Definition: NanoVDB.h:3655
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::setDev
void setDev(const FloatType &)
Definition: NanoVDB.h:3666
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::getAvg
bool getAvg() const
Definition: NanoVDB.h:3656
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::mValueMask
MaskT< LOG2DIM > mValueMask
Definition: NanoVDB.h:3650
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::setValue
void setValue(uint32_t offset, bool)
Definition: NanoVDB.h:3658
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::mBBoxMin
CoordT mBBoxMin
Definition: NanoVDB.h:3647
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::ValueType
bool ValueType
Definition: NanoVDB.h:3641
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::setAvg
void setAvg(const FloatType &)
Definition: NanoVDB.h:3665
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::setMin
void setMin(const ValueType &)
Definition: NanoVDB.h:3663
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::FloatType
bool FloatType
Definition: NanoVDB.h:3643
nanovdb::LeafData< ValueMask, CoordT, MaskT, LOG2DIM >::ArrayType
void ArrayType
Definition: NanoVDB.h:3644
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::setOrigin
void setOrigin(const T &ijk)
Definition: NanoVDB.h:3626
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::getDev
bool getDev() const
Definition: NanoVDB.h:3613
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::BuildType
bool BuildType
Definition: NanoVDB.h:3597
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::setMin
void setMin(const bool &)
Definition: NanoVDB.h:3620
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::getMin
bool getMin() const
Definition: NanoVDB.h:3610
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::setMax
void setMax(const bool &)
Definition: NanoVDB.h:3621
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::~LeafData
~LeafData()=delete
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::setValue
void setValue(uint32_t offset, bool v)
Definition: NanoVDB.h:3614
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::getValue
bool getValue(uint32_t i) const
Definition: NanoVDB.h:3609
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::mFlags
uint8_t mFlags
Definition: NanoVDB.h:3604
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::getMax
bool getMax() const
Definition: NanoVDB.h:3611
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::ArrayType
MaskT< LOG2DIM > ArrayType
Definition: NanoVDB.h:3599
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::getAvg
bool getAvg() const
Definition: NanoVDB.h:3612
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::mValueMask
MaskT< LOG2DIM > mValueMask
Definition: NanoVDB.h:3605
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::mValues
MaskT< LOG2DIM > mValues
Definition: NanoVDB.h:3606
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::mBBoxMin
CoordT mBBoxMin
Definition: NanoVDB.h:3602
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::ValueType
bool ValueType
Definition: NanoVDB.h:3596
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::setDev
void setDev(const bool &)
Definition: NanoVDB.h:3623
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::setAvg
void setAvg(const bool &)
Definition: NanoVDB.h:3622
nanovdb::LeafData< bool, CoordT, MaskT, LOG2DIM >::FloatType
bool FloatType
Definition: NanoVDB.h:3598
nanovdb::LeafData
Stuct with all the member data of the LeafNode (useful during serialization of an openvdb LeafNode)
Definition: NanoVDB.h:3355
nanovdb::LeafData::setOrigin
void setOrigin(const T &ijk)
Definition: NanoVDB.h:3395
nanovdb::LeafData::mMaximum
ValueType mMaximum
Definition: NanoVDB.h:3370
nanovdb::LeafData::getDev
FloatType getDev() const
Definition: NanoVDB.h:3387
nanovdb::LeafData::FloatType
typename FloatTraits< ValueT >::FloatType FloatType
Definition: NanoVDB.h:3360
nanovdb::LeafData::~LeafData
~LeafData()=delete
nanovdb::LeafData::setMin
void setMin(const ValueType &v)
Definition: NanoVDB.h:3389
nanovdb::LeafData::setMax
void setMax(const ValueType &v)
Definition: NanoVDB.h:3390
nanovdb::LeafData::mAverage
FloatType mAverage
Definition: NanoVDB.h:3371
nanovdb::LeafData::setDev
void setDev(const FloatType &v)
Definition: NanoVDB.h:3392
nanovdb::LeafData::mFlags
uint8_t mFlags
Definition: NanoVDB.h:3366
nanovdb::LeafData::operator=
LeafData & operator=(const LeafData &)=delete
nanovdb::LeafData::LeafData
LeafData(const LeafData &)=delete
nanovdb::LeafData::getMin
ValueType getMin() const
Definition: NanoVDB.h:3384
nanovdb::LeafData::getValue
ValueType getValue(uint32_t i) const
Definition: NanoVDB.h:3376
nanovdb::LeafData::setValue
void setValue(uint32_t offset, const ValueType &value)
Definition: NanoVDB.h:3378
nanovdb::LeafData::ValueType
ValueT ValueType
Definition: NanoVDB.h:3358
nanovdb::LeafData::mValueMask
MaskT< LOG2DIM > mValueMask
Definition: NanoVDB.h:3367
nanovdb::LeafData::setValueOnly
void setValueOnly(uint32_t offset, const ValueType &value)
Definition: NanoVDB.h:3377
nanovdb::LeafData::mBBoxMin
CoordT mBBoxMin
Definition: NanoVDB.h:3364
nanovdb::LeafData::getMax
ValueType getMax() const
Definition: NanoVDB.h:3385
nanovdb::LeafData::LeafData
LeafData()=delete
This class cannot be constructed or deleted.
nanovdb::LeafData::ArrayType
ValueT ArrayType
Definition: NanoVDB.h:3361
nanovdb::LeafData::getAvg
FloatType getAvg() const
Definition: NanoVDB.h:3386
nanovdb::LeafData::mMinimum
ValueType mMinimum
Definition: NanoVDB.h:3369
nanovdb::LeafData::setAvg
void setAvg(const FloatType &v)
Definition: NanoVDB.h:3391
nanovdb::LeafData::BuildType
ValueT BuildType
Definition: NanoVDB.h:3359
nanovdb::LeafData::mStdDevi
FloatType mStdDevi
Definition: NanoVDB.h:3372
nanovdb::LeafFnBase
Base-class for quantized float leaf nodes.
Definition: NanoVDB.h:3407
nanovdb::LeafFnBase::setOrigin
void setOrigin(const T &ijk)
Definition: NanoVDB.h:3454
nanovdb::LeafFnBase::ValueType
float ValueType
Definition: NanoVDB.h:3410
nanovdb::LeafFnBase::getMin
float getMin() const
return the quantized minimum of the active values in this node
Definition: NanoVDB.h:3429
nanovdb::LeafFnBase::setDev
void setDev(float dev)
Definition: NanoVDB.h:3451
nanovdb::LeafFnBase::setMin
void setMin(float min)
Definition: NanoVDB.h:3442
nanovdb::LeafFnBase::getAvg
float getAvg() const
return the quantized average of the active values in this node
Definition: NanoVDB.h:3435
nanovdb::LeafFnBase::mFlags
uint8_t mFlags
Definition: NanoVDB.h:3415
nanovdb::LeafFnBase::mQuantum
float mQuantum
Definition: NanoVDB.h:3419
nanovdb::LeafFnBase::mValueMask
MaskT< LOG2DIM > mValueMask
Definition: NanoVDB.h:3416
nanovdb::LeafFnBase::init
void init(float min, float max, uint8_t bitWidth)
Definition: NanoVDB.h:3422
nanovdb::LeafFnBase::mAvg
uint16_t mAvg
Definition: NanoVDB.h:3420
nanovdb::LeafFnBase::mBBoxMin
CoordT mBBoxMin
Definition: NanoVDB.h:3413
nanovdb::LeafFnBase::mMinimum
float mMinimum
Definition: NanoVDB.h:3418
nanovdb::LeafFnBase::FloatType
float FloatType
Definition: NanoVDB.h:3411
nanovdb::LeafFnBase::setMax
void setMax(float max)
Definition: NanoVDB.h:3445
nanovdb::LeafFnBase::setAvg
void setAvg(float avg)
Definition: NanoVDB.h:3448
nanovdb::LeafFnBase::getDev
float getDev() const
return the quantized standard deviation of the active values in this node
Definition: NanoVDB.h:3439
nanovdb::LeafFnBase::getMax
float getMax() const
return the quantized maximum of the active values in this node
Definition: NanoVDB.h:3432
nanovdb::LeafNode::ChildNodeType
Definition: NanoVDB.h:3687
nanovdb::LeafNode::ChildNodeType::dim
static uint32_t dim()
Definition: NanoVDB.h:3688
nanovdb::Map
Defines an affine transform and its inverse represented as a 3x3 matrix and a vec3 translation.
Definition: NanoVDB.h:1998
nanovdb::Map::mTaperD
double mTaperD
Definition: NanoVDB.h:2006
nanovdb::Map::applyInverseJacobianF
Vec3T applyInverseJacobianF(const Vec3T &xyz) const
Definition: NanoVDB.h:2036
nanovdb::Map::applyIJTF
Vec3T applyIJTF(const Vec3T &xyz) const
Definition: NanoVDB.h:2041
nanovdb::Map::mVecD
double mVecD[3]
Definition: NanoVDB.h:2005
nanovdb::Map::mInvMatF
float mInvMatF[9]
Definition: NanoVDB.h:2000
nanovdb::Map::applyIJT
Vec3T applyIJT(const Vec3T &xyz) const
Definition: NanoVDB.h:2039
nanovdb::Map::applyJacobianF
Vec3T applyJacobianF(const Vec3T &xyz) const
Definition: NanoVDB.h:2020
nanovdb::Map::applyInverseJacobian
Vec3T applyInverseJacobian(const Vec3T &xyz) const
Definition: NanoVDB.h:2034
nanovdb::Map::set
void set(const Mat4T &mat, const Mat4T &invMat, double taper)
Definition: NanoVDB.h:2045
nanovdb::Map::mInvMatD
double mInvMatD[9]
Definition: NanoVDB.h:2004
nanovdb::Map::applyMapF
Vec3T applyMapF(const Vec3T &xyz) const
Definition: NanoVDB.h:2015
nanovdb::Map::mMatF
float mMatF[9]
Definition: NanoVDB.h:1999
nanovdb::Map::applyInverseMap
Vec3T applyInverseMap(const Vec3T &xyz) const
Definition: NanoVDB.h:2023
nanovdb::Map::mMatD
double mMatD[9]
Definition: NanoVDB.h:2003
nanovdb::Map::applyJacobian
Vec3T applyJacobian(const Vec3T &xyz) const
Definition: NanoVDB.h:2018
nanovdb::Map::applyMap
Vec3T applyMap(const Vec3T &xyz) const
Definition: NanoVDB.h:2013
nanovdb::Map::applyInverseMapF
Vec3T applyInverseMapF(const Vec3T &xyz) const
Definition: NanoVDB.h:2028
nanovdb::Map::mTaperF
float mTaperF
Definition: NanoVDB.h:2002
nanovdb::Map::mVecF
float mVecF[3]
Definition: NanoVDB.h:2001
nanovdb::Maximum
Maximum floating-point values.
Definition: NanoVDB.h:638
nanovdb::Maximum::value
static T value()
Definition: NanoVDB.h:639
nanovdb::NanoNode
Trait to map from LEVEL to node type.
Definition: NanoVDB.h:3933
nanovdb::NodeTrait< GridOrTreeOrRootT, 0 >::type
typename GridOrTreeOrRootT::LeafNodeType type
Definition: NanoVDB.h:2104
nanovdb::NodeTrait< GridOrTreeOrRootT, 0 >::Type
typename GridOrTreeOrRootT::LeafNodeType Type
Definition: NanoVDB.h:2103
nanovdb::NodeTrait< GridOrTreeOrRootT, 1 >::Type
typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType Type
Definition: NanoVDB.h:2118
nanovdb::NodeTrait< GridOrTreeOrRootT, 1 >::type
typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType type
Definition: NanoVDB.h:2119
nanovdb::NodeTrait< GridOrTreeOrRootT, 2 >::Type
typename GridOrTreeOrRootT::RootType::ChildNodeType Type
Definition: NanoVDB.h:2132
nanovdb::NodeTrait< GridOrTreeOrRootT, 2 >::type
typename GridOrTreeOrRootT::RootType::ChildNodeType type
Definition: NanoVDB.h:2133
nanovdb::NodeTrait< GridOrTreeOrRootT, 3 >::type
typename GridOrTreeOrRootT::RootType type
Definition: NanoVDB.h:2147
nanovdb::NodeTrait< GridOrTreeOrRootT, 3 >::Type
typename GridOrTreeOrRootT::RootType Type
Definition: NanoVDB.h:2146
nanovdb::NodeTrait< const GridOrTreeOrRootT, 0 >::Type
const typename GridOrTreeOrRootT::LeafNodeType Type
Definition: NanoVDB.h:2110
nanovdb::NodeTrait< const GridOrTreeOrRootT, 0 >::type
const typename GridOrTreeOrRootT::LeafNodeType type
Definition: NanoVDB.h:2111
nanovdb::NodeTrait< const GridOrTreeOrRootT, 1 >::Type
const typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType Type
Definition: NanoVDB.h:2125
nanovdb::NodeTrait< const GridOrTreeOrRootT, 1 >::type
const typename GridOrTreeOrRootT::RootType::ChildNodeType::ChildNodeType type
Definition: NanoVDB.h:2126
nanovdb::NodeTrait< const GridOrTreeOrRootT, 2 >::type
const typename GridOrTreeOrRootT::RootType::ChildNodeType type
Definition: NanoVDB.h:2140
nanovdb::NodeTrait< const GridOrTreeOrRootT, 2 >::Type
const typename GridOrTreeOrRootT::RootType::ChildNodeType Type
Definition: NanoVDB.h:2139
nanovdb::NodeTrait< const GridOrTreeOrRootT, 3 >::type
const typename GridOrTreeOrRootT::RootType type
Definition: NanoVDB.h:2155
nanovdb::NodeTrait< const GridOrTreeOrRootT, 3 >::Type
const typename GridOrTreeOrRootT::RootType Type
Definition: NanoVDB.h:2154
nanovdb::NodeTrait
Struct to derive node type from its level in a given grid, tree or root while perserving constness.
Definition: NanoVDB.h:2096
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mLevel
uint32_t mLevel
Definition: NanoVDB.h:4024
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mMaximum
ValueType mMaximum
Definition: NanoVDB.h:4027
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mDim
uint32_t mDim
Definition: NanoVDB.h:4025
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mAverage
FloatType mAverage
Definition: NanoVDB.h:4028
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mBBoxMax
CoordType mBBoxMax
Definition: NanoVDB.h:4031
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mMinimum
ValueType mMinimum
Definition: NanoVDB.h:4026
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mBBoxMin
CoordType mBBoxMin
Definition: NanoVDB.h:4030
nanovdb::ReadAccessor< BuildT, -1, -1, -1 >::NodeInfo::mStdDevi
FloatType mStdDevi
Definition: NanoVDB.h:4029
nanovdb::RootData::Tile
Definition: NanoVDB.h:2728
nanovdb::RootData::Tile::value
ValueT value
Definition: NanoVDB.h:2748
nanovdb::RootData::Tile::setChild
void setChild(const CoordType &k, const ChildT *ptr, const RootData *data)
Definition: NanoVDB.h:2730
nanovdb::RootData::Tile::state
uint32_t state
Definition: NanoVDB.h:2747
nanovdb::RootData::Tile::key
KeyT key
Definition: NanoVDB.h:2745
nanovdb::RootData::Tile::setValue
void setValue(const CoordType &k, bool s, const ValueType &v)
Definition: NanoVDB.h:2736
nanovdb::RootData::Tile::origin
CoordT origin() const
Definition: NanoVDB.h:2744
nanovdb::RootData::Tile::isChild
bool isChild() const
Definition: NanoVDB.h:2743
nanovdb::RootData::Tile::child
int64_t child
Definition: NanoVDB.h:2746
nanovdb::RootData
Struct with all the member data of the RootNode (useful during serialization of an openvdb RootNode)
Definition: NanoVDB.h:2687
nanovdb::RootData::mAverage
StatsT mAverage
Definition: NanoVDB.h:2724
nanovdb::RootData::CoordT
typename ChildT::CoordType CoordT
Definition: NanoVDB.h:2690
nanovdb::RootData::KeyToCoord
static CoordT KeyToCoord(const KeyT &key)
Definition: NanoVDB.h:2706
nanovdb::RootData::getChild
const ChildT * getChild(const Tile *tile) const
Definition: NanoVDB.h:2773
nanovdb::RootData::RootData
RootData()=delete
This class cannot be constructed or deleted.
nanovdb::RootData::mBackground
ValueT mBackground
Definition: NanoVDB.h:2721
nanovdb::RootData::tile
Tile * tile(uint32_t n)
Definition: NanoVDB.h:2759
nanovdb::RootData::tile
const Tile * tile(uint32_t n) const
Returns a non-const reference to the tile at the specified linear offset.
Definition: NanoVDB.h:2754
nanovdb::RootData::mTableSize
uint32_t mTableSize
Definition: NanoVDB.h:2719
nanovdb::RootData::getMax
const ValueT & getMax() const
Definition: NanoVDB.h:2780
nanovdb::RootData::setDev
void setDev(const StatsT &v)
Definition: NanoVDB.h:2787
nanovdb::RootData::KeyT
uint64_t KeyT
Return a key based on the coordinates of a voxel.
Definition: NanoVDB.h:2696
nanovdb::RootData::setMin
void setMin(const ValueT &v)
Definition: NanoVDB.h:2784
nanovdb::RootData::StatsT
typename ChildT::FloatType StatsT
Definition: NanoVDB.h:2691
nanovdb::RootData::BuildT
typename ChildT::BuildType BuildT
Definition: NanoVDB.h:2689
nanovdb::RootData::getChild
ChildT * getChild(const Tile *tile)
Returns a const reference to the child node in the specified tile.
Definition: NanoVDB.h:2768
nanovdb::RootData::~RootData
~RootData()=delete
nanovdb::RootData::getMin
const ValueT & getMin() const
Definition: NanoVDB.h:2779
nanovdb::RootData::setMax
void setMax(const ValueT &v)
Definition: NanoVDB.h:2785
nanovdb::RootData::mStdDevi
StatsT mStdDevi
Definition: NanoVDB.h:2725
nanovdb::RootData::RootData
RootData(const RootData &)=delete
nanovdb::RootData::CoordToKey
static KeyT CoordToKey(const CoordType &ijk)
Definition: NanoVDB.h:2698
nanovdb::RootData::operator=
RootData & operator=(const RootData &)=delete
nanovdb::RootData::mBBox
BBox< CoordT > mBBox
Definition: NanoVDB.h:2718
nanovdb::RootData::mMaximum
ValueT mMaximum
Definition: NanoVDB.h:2723
nanovdb::RootData::stdDeviation
const StatsT & stdDeviation() const
Definition: NanoVDB.h:2782
nanovdb::RootData::average
const StatsT & average() const
Definition: NanoVDB.h:2781
nanovdb::RootData::setAvg
void setAvg(const StatsT &v)
Definition: NanoVDB.h:2786
nanovdb::RootData::ValueT
typename ChildT::ValueType ValueT
Definition: NanoVDB.h:2688
nanovdb::RootData::mMinimum
ValueT mMinimum
Definition: NanoVDB.h:2722
nanovdb::TensorTraits< T, 0 >::ElementType
T ElementType
Definition: NanoVDB.h:1321
nanovdb::TensorTraits< T, 0 >::scalar
static T scalar(const T &s)
Definition: NanoVDB.h:1322
nanovdb::TensorTraits< T, 1 >::scalar
static ElementType scalar(const T &v)
Definition: NanoVDB.h:1333
nanovdb::TensorTraits< T, 1 >::ElementType
typename T::ValueType ElementType
Definition: NanoVDB.h:1332
nanovdb::TensorTraits
Definition: NanoVDB.h:1312
nanovdb::Tolerance< double >::value
static double value()
Definition: NanoVDB.h:590
nanovdb::Tolerance< float >::value
static float value()
Definition: NanoVDB.h:585
nanovdb::Tolerance
Tolerance for floating-point comparison.
Definition: NanoVDB.h:581
nanovdb::TreeData
Definition: NanoVDB.h:2501
nanovdb::TreeData::getRoot
const RootT * getRoot() const
Definition: NanoVDB.h:2513
nanovdb::TreeData::setFirstNode
void setFirstNode(const NodeT *node)
Definition: NanoVDB.h:2516
nanovdb::TreeData::getRoot
RootT * getRoot()
Definition: NanoVDB.h:2511
nanovdb::TreeData::setRoot
void setRoot(const RootT *root)
Definition: NanoVDB.h:2509
nanovdb::TreeData::mVoxelCount
uint64_t mVoxelCount
Definition: NanoVDB.h:2506
nanovdb::enable_if< true, T >::type
T type
Definition: NanoVDB.h:348
nanovdb::enable_if
C++11 implementation of std::enable_if.
Definition: NanoVDB.h:342
nanovdb::is_floating_point
C++11 implementation of std::is_floating_point.
Definition: NanoVDB.h:356
nanovdb::is_floating_point::value
static const bool value
Definition: NanoVDB.h:357
nanovdb::is_same
C++11 implementation of std::is_same.
Definition: NanoVDB.h:327
nanovdb::is_same::value
static constexpr bool value
Definition: NanoVDB.h:328
nanovdb::is_specialization
Metafunction used to determine if the first template parameter is a specialization of the class templ...
Definition: NanoVDB.h:369
nanovdb::is_specialization::value
static const bool value
Definition: NanoVDB.h:370
nanovdb::InternalData::Tile
Definition: NanoVDB.h:3052
nanovdb::InternalData::Tile::value
ValueT value
Definition: NanoVDB.h:3053
nanovdb::InternalData::Tile::Tile
Tile(const Tile &)=delete
nanovdb::InternalData::Tile::operator=
Tile & operator=(const Tile &)=delete
nanovdb::InternalData::Tile::~Tile
~Tile()=delete
nanovdb::InternalData::Tile::Tile
Tile()=delete
This class cannot be constructed or deleted.
nanovdb::InternalData::Tile::child
int64_t child
Definition: NanoVDB.h:3054