Bullet Collision Detection & Physics Library
btTriangleIndexVertexArray.cpp
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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 
17 
18 btTriangleIndexVertexArray::btTriangleIndexVertexArray(int numTriangles,int* triangleIndexBase,int triangleIndexStride,int numVertices,btScalar* vertexBase,int vertexStride)
19 : m_hasAabb(0)
20 {
21  btIndexedMesh mesh;
22 
23  mesh.m_numTriangles = numTriangles;
24  mesh.m_triangleIndexBase = (const unsigned char *)triangleIndexBase;
25  mesh.m_triangleIndexStride = triangleIndexStride;
26  mesh.m_numVertices = numVertices;
27  mesh.m_vertexBase = (const unsigned char *)vertexBase;
28  mesh.m_vertexStride = vertexStride;
29 
30  addIndexedMesh(mesh);
31 
32 }
33 
35 {
36 
37 }
38 
39 void btTriangleIndexVertexArray::getLockedVertexIndexBase(unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& vertexStride,unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart)
40 {
41  btAssert(subpart< getNumSubParts() );
42 
43  btIndexedMesh& mesh = m_indexedMeshes[subpart];
44 
45  numverts = mesh.m_numVertices;
46  (*vertexbase) = (unsigned char *) mesh.m_vertexBase;
47 
48  type = mesh.m_vertexType;
49 
50  vertexStride = mesh.m_vertexStride;
51 
52  numfaces = mesh.m_numTriangles;
53 
54  (*indexbase) = (unsigned char *)mesh.m_triangleIndexBase;
55  indexstride = mesh.m_triangleIndexStride;
56  indicestype = mesh.m_indexType;
57 }
58 
59 void btTriangleIndexVertexArray::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) const
60 {
61  const btIndexedMesh& mesh = m_indexedMeshes[subpart];
62 
63  numverts = mesh.m_numVertices;
64  (*vertexbase) = (const unsigned char *)mesh.m_vertexBase;
65 
66  type = mesh.m_vertexType;
67 
68  vertexStride = mesh.m_vertexStride;
69 
70  numfaces = mesh.m_numTriangles;
71  (*indexbase) = (const unsigned char *)mesh.m_triangleIndexBase;
72  indexstride = mesh.m_triangleIndexStride;
73  indicestype = mesh.m_indexType;
74 }
75 
77 {
78  return (m_hasAabb == 1);
79 }
80 
81 
82 void btTriangleIndexVertexArray::setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax ) const
83 {
84  m_aabbMin = aabbMin;
85  m_aabbMax = aabbMax;
86  m_hasAabb = 1; // this is intentionally an int see notes in header
87 }
88 
90 {
91  *aabbMin = m_aabbMin;
92  *aabbMax = m_aabbMax;
93 }
94 
95 
The btIndexedMesh indexes a single vertex and index array.
#define btAssert(x)
Definition: btScalar.h:101
virtual void setPremadeAabb(const btVector3 &aabbMin, const btVector3 &aabbMax) const
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
PHY_ScalarType m_indexType
void addIndexedMesh(const btIndexedMesh &mesh, PHY_ScalarType indexType=PHY_INTEGER)
const unsigned char * m_triangleIndexBase
btVector3 can be used to represent 3D points and vectors.
Definition: btVector3.h:83
virtual int getNumSubParts() const
getNumSubParts returns the number of seperate subparts each subpart has a continuous array of vertice...
virtual void getPremadeAabb(btVector3 *aabbMin, btVector3 *aabbMax) const
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)
get read and write access to a subpart of a triangle mesh this subpart has a continuous array of vert...
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
Definition: btScalar.h:266
PHY_ScalarType m_vertexType
PHY_ScalarType
PHY_ScalarType enumerates possible scalar types.
const unsigned char * m_vertexBase