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f51ac89dbe
in btTriangleMesh container and ColladaConverter. btTriangleMesh now derives from btTriangleIndexVertexArray, so it can be used for meshes on SPU
115 lines
4.0 KiB
C++
115 lines
4.0 KiB
C++
/*
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Bullet Continuous Collision Detection and Physics Library
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Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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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.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "btTriangleMesh.h"
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#include <assert.h>
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btTriangleMesh::btTriangleMesh (bool use32bitIndices,bool use4componentVertices)
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:m_use32bitIndices(use32bitIndices),
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m_use4componentVertices(use4componentVertices)
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{
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btIndexedMesh meshIndex;
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meshIndex.m_numTriangles = 0;
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meshIndex.m_numVertices = 0;
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meshIndex.m_indexType = PHY_INTEGER;
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meshIndex.m_triangleIndexBase = 0;
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meshIndex.m_triangleIndexStride = 3*sizeof(int);
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meshIndex.m_vertexBase = 0;
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meshIndex.m_vertexStride = sizeof(btVector3);
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m_indexedMeshes.push_back(meshIndex);
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if (m_use32bitIndices)
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{
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m_indexedMeshes[0].m_numTriangles = m_32bitIndices.size()/3;
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m_indexedMeshes[0].m_triangleIndexBase = (unsigned char*) &m_32bitIndices[0];
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m_indexedMeshes[0].m_indexType = PHY_INTEGER;
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m_indexedMeshes[0].m_triangleIndexStride = 3*sizeof(int);
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} else
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{
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m_indexedMeshes[0].m_numTriangles = m_16bitIndices.size()/3;
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m_indexedMeshes[0].m_triangleIndexBase = (unsigned char*) &m_16bitIndices[0];
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m_indexedMeshes[0].m_indexType = PHY_SHORT;
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m_indexedMeshes[0].m_triangleIndexStride = 3*sizeof(short int);
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}
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if (m_use4componentVertices)
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{
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m_indexedMeshes[0].m_numVertices = m_4componentVertices.size();
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m_indexedMeshes[0].m_vertexBase = (unsigned char*)&m_4componentVertices[0];
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m_indexedMeshes[0].m_vertexStride = sizeof(btVector3);
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} else
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{
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m_indexedMeshes[0].m_numVertices = m_3componentVertices.size()/3;
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m_indexedMeshes[0].m_vertexBase = (unsigned char*)&m_3componentVertices[0];
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m_indexedMeshes[0].m_vertexStride = 3*sizeof(btScalar);
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}
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}
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void btTriangleMesh::addTriangle(const btVector3& vertex0,const btVector3& vertex1,const btVector3& vertex2)
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{
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m_indexedMeshes[0].m_numTriangles++;
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m_indexedMeshes[0].m_numVertices+=3;
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if (m_use4componentVertices)
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{
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m_4componentVertices.push_back(vertex0);
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m_4componentVertices.push_back(vertex1);
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m_4componentVertices.push_back(vertex2);
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m_indexedMeshes[0].m_vertexBase = (unsigned char*)&m_4componentVertices[0];
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} else
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{
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m_3componentVertices.push_back(vertex0.getX());
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m_3componentVertices.push_back(vertex0.getY());
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m_3componentVertices.push_back(vertex0.getZ());
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m_3componentVertices.push_back(vertex1.getX());
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m_3componentVertices.push_back(vertex1.getY());
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m_3componentVertices.push_back(vertex1.getZ());
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m_3componentVertices.push_back(vertex2.getX());
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m_3componentVertices.push_back(vertex2.getY());
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m_3componentVertices.push_back(vertex2.getZ());
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m_indexedMeshes[0].m_vertexBase = (unsigned char*)&m_3componentVertices[0];
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}
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if (m_use32bitIndices)
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{
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int curIndex = m_32bitIndices.size();
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m_32bitIndices.push_back(curIndex++);
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m_32bitIndices.push_back(curIndex++);
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m_32bitIndices.push_back(curIndex++);
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m_indexedMeshes[0].m_triangleIndexBase = (unsigned char*) &m_32bitIndices[0];
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} else
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{
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int curIndex = m_16bitIndices.size();
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m_16bitIndices.push_back(curIndex++);
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m_16bitIndices.push_back(curIndex++);
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m_16bitIndices.push_back(curIndex++);
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m_indexedMeshes[0].m_triangleIndexBase = (unsigned char*) &m_16bitIndices[0];
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}
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}
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int btTriangleMesh::getNumTriangles() const
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{
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if (m_use32bitIndices)
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{
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return m_32bitIndices.size() / 3;
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}
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return m_16bitIndices.size() / 3;
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} |