Bullet Collision Detection & Physics Library: btTriangleIndexVertexArray.h Source File

Bullet Collision Detection & Physics Library

btTriangleIndexVertexArray.h
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1 /*
2 Bullet Continuous Collision Detection and Physics Library
3 Copyright (c) 2003-2009 Erwin Coumans http://bulletphysics.org
4
5 This software is provided 'as-is', without any express or implied warranty.
6 In no event will the authors be held liable for any damages arising from the use of this software.
7 Permission is granted to anyone to use this software for any purpose,
8 including commercial applications, and to alter it and redistribute it freely,
9 subject to the following restrictions:
10
11 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
12 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
13 3. This notice may not be removed or altered from any source distribution.
14 */
15
16 #ifndef BT_TRIANGLE_INDEX_VERTEX_ARRAY_H
17 #define BT_TRIANGLE_INDEX_VERTEX_ARRAY_H
18
19 #include "btStridingMeshInterface.h"
20 #include "LinearMath/btAlignedObjectArray.h"
21 #include "LinearMath/btScalar.h"
22
25 ATTRIBUTE_ALIGNED16(struct)
26 btIndexedMesh
27 {
28 BT_DECLARE_ALIGNED_ALLOCATOR();
29
30 int m_numTriangles;
31 const unsigned char* m_triangleIndexBase;
32 // Size in byte of the indices for one triangle (3*sizeof(index_type) if the indices are tightly packed)
33 int m_triangleIndexStride;
34 int m_numVertices;
35 const unsigned char* m_vertexBase;
36 // Size of a vertex, in bytes
37 int m_vertexStride;
38
39 // The index type is set when adding an indexed mesh to the
40 // btTriangleIndexVertexArray, do not set it manually
41 PHY_ScalarType m_indexType;
42
43 // The vertex type has a default type similar to Bullet's precision mode (float or double)
44 // but can be set manually if you for example run Bullet with double precision but have
45 // mesh data in single precision..
46 PHY_ScalarType m_vertexType;
47
48 btIndexedMesh()
49 : m_indexType(PHY_INTEGER),
50 #ifdef BT_USE_DOUBLE_PRECISION
51 m_vertexType(PHY_DOUBLE)
52 #else // BT_USE_DOUBLE_PRECISION
53 m_vertexType(PHY_FLOAT)
54 #endif // BT_USE_DOUBLE_PRECISION
55 {
56 }
57 };
58
59 typedef btAlignedObjectArray<btIndexedMesh> IndexedMeshArray;
60
65 ATTRIBUTE_ALIGNED16(class)
66 btTriangleIndexVertexArray : public btStridingMeshInterface
67 {
68 protected:
69 IndexedMeshArray m_indexedMeshes;
70 int m_pad[2];
71 mutable int m_hasAabb; // using int instead of bool to maintain alignment
72 mutable btVector3 m_aabbMin;
73 mutable btVector3 m_aabbMax;
74
75 public:
76 BT_DECLARE_ALIGNED_ALLOCATOR();
77
78 btTriangleIndexVertexArray() : m_hasAabb(0)
79 {
80 }
81
82 virtual ~btTriangleIndexVertexArray();
83
84 //just to be backwards compatible
85 btTriangleIndexVertexArray(int numTriangles, int* triangleIndexBase, int triangleIndexStride, int numVertices, btScalar* vertexBase, int vertexStride);
86
87 void addIndexedMesh(const btIndexedMesh& mesh, PHY_ScalarType indexType = PHY_INTEGER)
88 {
89 m_indexedMeshes.push_back(mesh);
90 m_indexedMeshes[m_indexedMeshes.size() - 1].m_indexType = indexType;
91 }
92
93 virtual void getLockedVertexIndexBase(unsigned char** vertexbase, int& numverts, PHY_ScalarType& type, int& vertexStride, unsigned char** indexbase, int& indexstride, int& numfaces, PHY_ScalarType& indicestype, int subpart = 0);
94
95 virtual void getLockedReadOnlyVertexIndexBase(const unsigned char** vertexbase, int& numverts, PHY_ScalarType& type, int& vertexStride, const unsigned char** indexbase, int& indexstride, int& numfaces, PHY_ScalarType& indicestype, int subpart = 0) const;
96
99 virtual void unLockVertexBase(int subpart) { (void)subpart; }
100
101 virtual void unLockReadOnlyVertexBase(int subpart) const { (void)subpart; }
102
105 virtual int getNumSubParts() const
106 {
107 return (int)m_indexedMeshes.size();
108 }
109
110 IndexedMeshArray& getIndexedMeshArray()
111 {
112 return m_indexedMeshes;
113 }
114
115 const IndexedMeshArray& getIndexedMeshArray() const
116 {
117 return m_indexedMeshes;
118 }
119
120 virtual void preallocateVertices(int numverts) { (void)numverts; }
121 virtual void preallocateIndices(int numindices) { (void)numindices; }
122
123 virtual bool hasPremadeAabb() const;
124 virtual void setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax) const;
125 virtual void getPremadeAabb(btVector3 * aabbMin, btVector3 * aabbMax) const;
126 };
127
128 #endif //BT_TRIANGLE_INDEX_VERTEX_ARRAY_H
btAlignedObjectArray.h
PHY_ScalarType
PHY_ScalarType
PHY_ScalarType enumerates possible scalar types.
Definition: btConcaveShape.h:26
PHY_FLOAT
@ PHY_FLOAT
Definition: btConcaveShape.h:27
PHY_DOUBLE
@ PHY_DOUBLE
Definition: btConcaveShape.h:28
PHY_INTEGER
@ PHY_INTEGER
Definition: btConcaveShape.h:29
btScalar.h
btScalar
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
Definition: btScalar.h:314
ATTRIBUTE_ALIGNED16
#define ATTRIBUTE_ALIGNED16(a)
Definition: btScalar.h:99
btStridingMeshInterface.h
IndexedMeshArray
btAlignedObjectArray< btIndexedMesh > IndexedMeshArray
Definition: btTriangleIndexVertexArray.h:59
btAlignedObjectArray< btIndexedMesh >
btAlignedObjectArray::size
int size() const
return the number of elements in the array
Definition: btAlignedObjectArray.h:142
btAlignedObjectArray::push_back
void push_back(const T &_Val)
Definition: btAlignedObjectArray.h:257
btStridingMeshInterface
The btStridingMeshInterface is the interface class for high performance generic access to triangle me...
Definition: btStridingMeshInterface.h:28
btTriangleIndexVertexArray
The btTriangleIndexVertexArray allows to access multiple triangle meshes, by indexing into existing t...
Definition: btTriangleIndexVertexArray.h:67
btTriangleIndexVertexArray::unLockVertexBase
virtual void unLockVertexBase(int subpart)
unLockVertexBase finishes the access to a subpart of the triangle mesh make a call to unLockVertexBas...
Definition: btTriangleIndexVertexArray.h:99
btTriangleIndexVertexArray::addIndexedMesh
void addIndexedMesh(const btIndexedMesh &mesh, PHY_ScalarType indexType=PHY_INTEGER)
Definition: btTriangleIndexVertexArray.h:87
btTriangleIndexVertexArray::unLockReadOnlyVertexBase
virtual void unLockReadOnlyVertexBase(int subpart) const
Definition: btTriangleIndexVertexArray.h:101
btTriangleIndexVertexArray::m_hasAabb
int m_hasAabb
Definition: btTriangleIndexVertexArray.h:71
btTriangleIndexVertexArray::m_aabbMax
btVector3 m_aabbMax
Definition: btTriangleIndexVertexArray.h:73
btTriangleIndexVertexArray::getNumSubParts
virtual int getNumSubParts() const
getNumSubParts returns the number of separate subparts each subpart has a continuous array of vertice...
Definition: btTriangleIndexVertexArray.h:105
btTriangleIndexVertexArray::m_aabbMin
btVector3 m_aabbMin
Definition: btTriangleIndexVertexArray.h:72
btTriangleIndexVertexArray::preallocateIndices
virtual void preallocateIndices(int numindices)
Definition: btTriangleIndexVertexArray.h:121
btTriangleIndexVertexArray::getIndexedMeshArray
const IndexedMeshArray & getIndexedMeshArray() const
Definition: btTriangleIndexVertexArray.h:115
btTriangleIndexVertexArray::m_indexedMeshes
IndexedMeshArray m_indexedMeshes
Definition: btTriangleIndexVertexArray.h:69
btTriangleIndexVertexArray::getIndexedMeshArray
IndexedMeshArray & getIndexedMeshArray()
Definition: btTriangleIndexVertexArray.h:110
btTriangleIndexVertexArray::BT_DECLARE_ALIGNED_ALLOCATOR
BT_DECLARE_ALIGNED_ALLOCATOR()
btTriangleIndexVertexArray::preallocateVertices
virtual void preallocateVertices(int numverts)
Definition: btTriangleIndexVertexArray.h:120
btTriangleIndexVertexArray::btTriangleIndexVertexArray
btTriangleIndexVertexArray()
Definition: btTriangleIndexVertexArray.h:78
btVector3
btVector3 can be used to represent 3D points and vectors.
Definition: btVector3.h:82
btIndexedMesh
The btIndexedMesh indexes a single vertex and index array.
Definition: btTriangleIndexVertexArray.h:27
btIndexedMesh::m_indexType
PHY_ScalarType m_indexType
Definition: btTriangleIndexVertexArray.h:41
btIndexedMesh::m_numVertices
int m_numVertices
Definition: btTriangleIndexVertexArray.h:34
btIndexedMesh::m_numTriangles
int m_numTriangles
Definition: btTriangleIndexVertexArray.h:30
btIndexedMesh::btIndexedMesh
btIndexedMesh()
Definition: btTriangleIndexVertexArray.h:48
btIndexedMesh::m_triangleIndexStride
int m_triangleIndexStride
Definition: btTriangleIndexVertexArray.h:33
btIndexedMesh::m_vertexBase
const unsigned char * m_vertexBase
Definition: btTriangleIndexVertexArray.h:35
btIndexedMesh::m_vertexStride
int m_vertexStride
Definition: btTriangleIndexVertexArray.h:37
btIndexedMesh::BT_DECLARE_ALIGNED_ALLOCATOR
BT_DECLARE_ALIGNED_ALLOCATOR()
btIndexedMesh::m_triangleIndexBase
const unsigned char * m_triangleIndexBase
Definition: btTriangleIndexVertexArray.h:31
btIndexedMesh::m_vertexType
PHY_ScalarType m_vertexType
Definition: btTriangleIndexVertexArray.h:46