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
23
26 ATTRIBUTE_ALIGNED16( struct) 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
49 btIndexedMesh()
50 :m_indexType(PHY_INTEGER),
51 #ifdef BT_USE_DOUBLE_PRECISION
52 m_vertexType(PHY_DOUBLE)
53 #else // BT_USE_DOUBLE_PRECISION
54 m_vertexType(PHY_FLOAT)
55 #endif // BT_USE_DOUBLE_PRECISION
56 {
57 }
58 }
59 ;
60
61
62 typedef btAlignedObjectArray<btIndexedMesh> IndexedMeshArray;
63
68 ATTRIBUTE_ALIGNED16( class) btTriangleIndexVertexArray : public btStridingMeshInterface
69 {
70 protected:
71 IndexedMeshArray m_indexedMeshes;
72 int m_pad[2];
73 mutable int m_hasAabb; // using int instead of bool to maintain alignment
74 mutable btVector3 m_aabbMin;
75 mutable btVector3 m_aabbMax;
76
77 public:
78
79 BT_DECLARE_ALIGNED_ALLOCATOR();
80
81 btTriangleIndexVertexArray() : m_hasAabb(0)
82 {
83 }
84
85 virtual ~btTriangleIndexVertexArray();
86
87 //just to be backwards compatible
88 btTriangleIndexVertexArray(int numTriangles,int* triangleIndexBase,int triangleIndexStride,int numVertices,btScalar* vertexBase,int vertexStride);
89
90 void addIndexedMesh(const btIndexedMesh& mesh, PHY_ScalarType indexType = PHY_INTEGER)
91 {
92 m_indexedMeshes.push_back(mesh);
93 m_indexedMeshes[m_indexedMeshes.size()-1].m_indexType = indexType;
94 }
95
96
97 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);
98
99 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;
100
103 virtual void unLockVertexBase(int subpart) {(void)subpart;}
104
105 virtual void unLockReadOnlyVertexBase(int subpart) const {(void)subpart;}
106
109 virtual int getNumSubParts() const {
110 return (int)m_indexedMeshes.size();
111 }
112
113 IndexedMeshArray& getIndexedMeshArray()
114 {
115 return m_indexedMeshes;
116 }
117
118 const IndexedMeshArray& getIndexedMeshArray() const
119 {
120 return m_indexedMeshes;
121 }
122
123 virtual void preallocateVertices(int numverts){(void) numverts;}
124 virtual void preallocateIndices(int numindices){(void) numindices;}
125
126 virtual bool hasPremadeAabb() const;
127 virtual void setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax ) const;
128 virtual void getPremadeAabb(btVector3* aabbMin, btVector3* aabbMax ) const;
129
130 }
131 ;
132
133 #endif //BT_TRIANGLE_INDEX_VERTEX_ARRAY_H
btIndexedMesh::m_numTriangles
int m_numTriangles
Definition: btTriangleIndexVertexArray.h:30
btAlignedObjectArray::push_back
void push_back(const T &_Val)
Definition: btAlignedObjectArray.h:274
btTriangleIndexVertexArray::unLockReadOnlyVertexBase
virtual void unLockReadOnlyVertexBase(int subpart) const
Definition: btTriangleIndexVertexArray.h:105
btIndexedMesh::btIndexedMesh
btIndexedMesh()
Definition: btTriangleIndexVertexArray.h:49
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:103
btIndexedMesh
The btIndexedMesh indexes a single vertex and index array.
Definition: btTriangleIndexVertexArray.h:26
btAlignedObjectArray< btIndexedMesh >
btTriangleIndexVertexArray::m_aabbMin
btVector3 m_aabbMin
Definition: btTriangleIndexVertexArray.h:74
btTriangleIndexVertexArray::preallocateVertices
virtual void preallocateVertices(int numverts)
Definition: btTriangleIndexVertexArray.h:123
btStridingMeshInterface.h
btTriangleIndexVertexArray::btTriangleIndexVertexArray
btTriangleIndexVertexArray()
Definition: btTriangleIndexVertexArray.h:81
btTriangleIndexVertexArray::getIndexedMeshArray
const IndexedMeshArray & getIndexedMeshArray() const
Definition: btTriangleIndexVertexArray.h:118
btIndexedMesh::m_indexType
PHY_ScalarType m_indexType
Definition: btTriangleIndexVertexArray.h:41
btTriangleIndexVertexArray::m_hasAabb
int m_hasAabb
Definition: btTriangleIndexVertexArray.h:73
btTriangleIndexVertexArray
The btTriangleIndexVertexArray allows to access multiple triangle meshes, by indexing into existing t...
Definition: btTriangleIndexVertexArray.h:68
btTriangleIndexVertexArray::m_indexedMeshes
IndexedMeshArray m_indexedMeshes
Definition: btTriangleIndexVertexArray.h:71
btTriangleIndexVertexArray::m_aabbMax
btVector3 m_aabbMax
Definition: btTriangleIndexVertexArray.h:75
btTriangleIndexVertexArray::addIndexedMesh
void addIndexedMesh(const btIndexedMesh &mesh, PHY_ScalarType indexType=PHY_INTEGER)
Definition: btTriangleIndexVertexArray.h:90
btIndexedMesh::m_triangleIndexStride
int m_triangleIndexStride
Definition: btTriangleIndexVertexArray.h:33
PHY_DOUBLE
Definition: btConcaveShape.h:27
btTriangleIndexVertexArray::getIndexedMeshArray
IndexedMeshArray & getIndexedMeshArray()
Definition: btTriangleIndexVertexArray.h:113
btIndexedMesh::m_triangleIndexBase
const unsigned char * m_triangleIndexBase
Definition: btTriangleIndexVertexArray.h:31
btVector3
btVector3 can be used to represent 3D points and vectors.
Definition: btVector3.h:83
ATTRIBUTE_ALIGNED16
#define ATTRIBUTE_ALIGNED16(a)
Definition: btScalar.h:65
btAlignedObjectArray::size
int size() const
return the number of elements in the array
Definition: btAlignedObjectArray.h:155
btStridingMeshInterface
The btStridingMeshInterface is the interface class for high performance generic access to triangle me...
Definition: btStridingMeshInterface.h:30
PHY_INTEGER
Definition: btConcaveShape.h:28
btTriangleIndexVertexArray::getNumSubParts
virtual int getNumSubParts() const
getNumSubParts returns the number of seperate subparts each subpart has a continuous array of vertice...
Definition: btTriangleIndexVertexArray.h:109
IndexedMeshArray
btAlignedObjectArray< btIndexedMesh > IndexedMeshArray
Definition: btTriangleIndexVertexArray.h:62
btTriangleIndexVertexArray::preallocateIndices
virtual void preallocateIndices(int numindices)
Definition: btTriangleIndexVertexArray.h:124
BT_DECLARE_ALIGNED_ALLOCATOR
#define BT_DECLARE_ALIGNED_ALLOCATOR()
Definition: btScalar.h:389
btIndexedMesh::m_numVertices
int m_numVertices
Definition: btTriangleIndexVertexArray.h:34
btAlignedObjectArray.h
btIndexedMesh::m_vertexStride
int m_vertexStride
Definition: btTriangleIndexVertexArray.h:37
btScalar
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
Definition: btScalar.h:279
btIndexedMesh::m_vertexType
PHY_ScalarType m_vertexType
Definition: btTriangleIndexVertexArray.h:46
PHY_ScalarType
PHY_ScalarType
PHY_ScalarType enumerates possible scalar types.
Definition: btConcaveShape.h:25
PHY_FLOAT
Definition: btConcaveShape.h:26
btIndexedMesh::m_vertexBase
const unsigned char * m_vertexBase
Definition: btTriangleIndexVertexArray.h:35
btScalar.h