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

Bullet Collision Detection & Physics Library

btTriangleIndexVertexArray.h
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1/*
2Bullet Continuous Collision Detection and Physics Library
3Copyright (c) 2003-2009 Erwin Coumans http://bulletphysics.org
4
5This software is provided 'as-is', without any express or implied warranty.
6In no event will the authors be held liable for any damages arising from the use of this software.
7Permission is granted to anyone to use this software for any purpose,
8including commercial applications, and to alter it and redistribute it freely,
9subject to the following restrictions:
10
111. 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.
122. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
133. 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{
68protected:
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
75public:
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
The btAlignedObjectArray template class uses a subset of the stl::vector interface for its methods It...
Definition btAlignedObjectArray.h:46
btStridingMeshInterface::btStridingMeshInterface
btStridingMeshInterface()
Definition btStridingMeshInterface.h:35
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::getIndexedMeshArray
IndexedMeshArray & getIndexedMeshArray()
Definition btTriangleIndexVertexArray.h:110
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::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
btTriangleIndexVertexArray::m_pad
int m_pad[2]
Definition btTriangleIndexVertexArray.h:70
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