btTriangleIndexVertexArray.cpp

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00001 /*
00002 Bullet Continuous Collision Detection and Physics Library
00003 Copyright (c) 2003-2009 Erwin Coumans  http://bulletphysics.org
00004 
00005 This software is provided 'as-is', without any express or implied warranty.
00006 In no event will the authors be held liable for any damages arising from the use of this software.
00007 Permission is granted to anyone to use this software for any purpose, 
00008 including commercial applications, and to alter it and redistribute it freely, 
00009 subject to the following restrictions:
00010 
00011 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.
00012 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
00013 3. This notice may not be removed or altered from any source distribution.
00014 */
00015 
00016 #include "btTriangleIndexVertexArray.h"
00017 
00018 btTriangleIndexVertexArray::btTriangleIndexVertexArray(int numTriangles,int* triangleIndexBase,int triangleIndexStride,int numVertices,btScalar* vertexBase,int vertexStride)
00019 : m_hasAabb(0)
00020 {
00021         btIndexedMesh mesh;
00022 
00023         mesh.m_numTriangles = numTriangles;
00024         mesh.m_triangleIndexBase = (const unsigned char *)triangleIndexBase;
00025         mesh.m_triangleIndexStride = triangleIndexStride;
00026         mesh.m_numVertices = numVertices;
00027         mesh.m_vertexBase = (const unsigned char *)vertexBase;
00028         mesh.m_vertexStride = vertexStride;
00029 
00030         addIndexedMesh(mesh);
00031 
00032 }
00033 
00034 btTriangleIndexVertexArray::~btTriangleIndexVertexArray()
00035 {
00036 
00037 }
00038 
00039 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)
00040 {
00041         btAssert(subpart< getNumSubParts() );
00042 
00043         btIndexedMesh& mesh = m_indexedMeshes[subpart];
00044 
00045         numverts = mesh.m_numVertices;
00046         (*vertexbase) = (unsigned char *) mesh.m_vertexBase;
00047 
00048    type = mesh.m_vertexType;
00049 
00050         vertexStride = mesh.m_vertexStride;
00051 
00052         numfaces = mesh.m_numTriangles;
00053 
00054         (*indexbase) = (unsigned char *)mesh.m_triangleIndexBase;
00055         indexstride = mesh.m_triangleIndexStride;
00056         indicestype = mesh.m_indexType;
00057 }
00058 
00059 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
00060 {
00061         const btIndexedMesh& mesh = m_indexedMeshes[subpart];
00062 
00063         numverts = mesh.m_numVertices;
00064         (*vertexbase) = (const unsigned char *)mesh.m_vertexBase;
00065 
00066    type = mesh.m_vertexType;
00067    
00068         vertexStride = mesh.m_vertexStride;
00069 
00070         numfaces = mesh.m_numTriangles;
00071         (*indexbase) = (const unsigned char *)mesh.m_triangleIndexBase;
00072         indexstride = mesh.m_triangleIndexStride;
00073         indicestype = mesh.m_indexType;
00074 }
00075 
00076 bool    btTriangleIndexVertexArray::hasPremadeAabb() const
00077 {
00078         return (m_hasAabb == 1);
00079 }
00080 
00081 
00082 void    btTriangleIndexVertexArray::setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax ) const
00083 {
00084         m_aabbMin = aabbMin;
00085         m_aabbMax = aabbMax;
00086         m_hasAabb = 1; // this is intentionally an int see notes in header
00087 }
00088 
00089 void    btTriangleIndexVertexArray::getPremadeAabb(btVector3* aabbMin, btVector3* aabbMax ) const
00090 {
00091         *aabbMin = m_aabbMin;
00092         *aabbMax = m_aabbMax;
00093 }
00094 
00095