OpenSubdiv: opensubdiv/vtr/componentInterfaces.h Source File

| OpenSubdiv

Loading...
Searching...
No Matches
componentInterfaces.h
Go to the documentation of this file.
1//
2// Copyright 2014 DreamWorks Animation LLC.
3//
4// Licensed under the Apache License, Version 2.0 (the "Apache License")
5// with the following modification; you may not use this file except in
6// compliance with the Apache License and the following modification to it:
7// Section 6. Trademarks. is deleted and replaced with:
8//
9// 6. Trademarks. This License does not grant permission to use the trade
10// names, trademarks, service marks, or product names of the Licensor
11// and its affiliates, except as required to comply with Section 4(c) of
12// the License and to reproduce the content of the NOTICE file.
13//
14// You may obtain a copy of the Apache License at
15//
16// http://www.apache.org/licenses/LICENSE-2.0
17//
18// Unless required by applicable law or agreed to in writing, software
19// distributed under the Apache License with the above modification is
20// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21// KIND, either express or implied. See the Apache License for the specific
22// language governing permissions and limitations under the Apache License.
23//
24#ifndef OPENSUBDIV3_VTR_COMPONENT_INTERFACES_H
25#define OPENSUBDIV3_VTR_COMPONENT_INTERFACES_H
26
27#include "../version.h"
28
29#include "../sdc/types.h"
30#include "../sdc/crease.h"
31#include "../vtr/types.h"
32#include "../vtr/stackBuffer.h"
33
34#include <vector>
35
36
37namespace OpenSubdiv {
38namespace OPENSUBDIV_VERSION {
39
40namespace Vtr {
41namespace internal {
42
43//
44// Simple classes supporting the interfaces required of generic topological
45// types in the Scheme mask queries, e.g. <typename FACE, VERTEX, etc.>
46//
47// These are not used with Vtr but arguably belong with it as the details to
48// write these efficiently depends very much on intimate details of Vtr's
49// implementation, e.g. the use of tag bits, subdivision Rules, etc.
50//
51
52
53//
54// For <typename FACE>, which provides information in the neighborhood of a face:
55//
56class FaceInterface {
57public:
58 FaceInterface() { }
59 FaceInterface(int vertCount) : _vertCount(vertCount) { }
60 ~FaceInterface() { }
61
62public: // Generic interface expected of <typename FACE>:
63 int GetNumVertices() const { return _vertCount; }
64
65private:
66 int _vertCount;
67};
68
69
70//
71// For <typename EDGE>, which provides information in the neighborhood of an edge:
72//
73class EdgeInterface {
74public:
75 EdgeInterface() { }
76 EdgeInterface(Level const& level) : _level(&level) { }
77 ~EdgeInterface() { }
78
79 void SetIndex(int edgeIndex) { _eIndex = edgeIndex; }
80
81public: // Generic interface expected of <typename EDGE>:
82 int GetNumFaces() const { return _level->getEdgeFaces(_eIndex).size(); }
83 float GetSharpness() const { return _level->getEdgeSharpness(_eIndex); }
84
85 void GetChildSharpnesses(Sdc::Crease const&, float s[2]) const {
86 // Need to use the Refinement here to identify the two child edges:
87 s[0] = s[1] = GetSharpness() - 1.0f;
88 }
89
90 void GetNumVerticesPerFace(int vertsPerFace[]) const {
91 ConstIndexArray eFaces = _level->getEdgeFaces(_eIndex);
92 for (int i = 0; i < eFaces.size(); ++i) {
93 vertsPerFace[i] = _level->getFaceVertices(eFaces[i]).size();
94 }
95 }
96
97private:
98 const Level* _level;
99
100 int _eIndex;
101};
102
103
104//
105// For <typename VERTEX>, which provides information in the neighborhood of a vertex:
106//
107class VertexInterface {
108public:
109 VertexInterface() { }
110 VertexInterface(Level const& parent, Level const& child) : _parent(&parent), _child(&child) { }
111 ~VertexInterface() { }
112
113 void SetIndex(int parentIndex, int childIndex) {
114 _pIndex = parentIndex;
115 _cIndex = childIndex;
116 _eCount = _parent->getVertexEdges(_pIndex).size();
117 _fCount = _parent->getVertexFaces(_pIndex).size();
118 }
119
120public: // Generic interface expected of <typename VERT>:
121 int GetNumEdges() const { return _eCount; }
122 int GetNumFaces() const { return _fCount; }
123
124 float GetSharpness() const { return _parent->getVertexSharpness(_pIndex); }
125 float* GetSharpnessPerEdge(float pSharpness[]) const {
126 ConstIndexArray pEdges = _parent->getVertexEdges(_pIndex);
127 for (int i = 0; i < _eCount; ++i) {
128 pSharpness[i] = _parent->getEdgeSharpness(pEdges[i]);
129 }
130 return pSharpness;
131 }
132
133 float GetChildSharpness(Sdc::Crease const&) const { return _child->getVertexSharpness(_cIndex); }
134 float* GetChildSharpnessPerEdge(Sdc::Crease const& crease, float cSharpness[]) const {
135 internal::StackBuffer<float,16> pSharpness(_eCount);
136 GetSharpnessPerEdge(pSharpness);
137 crease.SubdivideEdgeSharpnessesAroundVertex(_eCount, pSharpness, cSharpness);
138 return cSharpness;
139 }
140
141private:
142 const Level* _parent;
143 const Level* _child;
144
145 int _pIndex;
146 int _cIndex;
147 int _eCount;
148 int _fCount;
149};
150
151} // end namespace internal
152} // end namespace Vtr
153
154} // end namespace OPENSUBDIV_VERSION
155using namespace OPENSUBDIV_VERSION;
156} // end namespace OpenSubdiv
157
158#endif /* OPENSUBDIV3_VTR_COMPONENT_INTERFACES_H */
OpenSubdiv
Definition: limits.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::ConstIndexArray
ConstArray< Index > ConstIndexArray
Definition: types.h:80