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add support for 16bit indices and 3-float vertices (instead of btVector3 which is 4float) in

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in btTriangleMesh container and ColladaConverter.

compile issue with PlatformDefinitions in GDC demo.
This commit is contained in:
ejcoumans
2008-02-18 01:37:30 +00:00
parent a8951e27b3
commit 9aec3255ef
5 changed files with 148 additions and 27 deletions
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71
src/BulletCollision/CollisionShapes/btTriangleMesh.cpp
View File

@@ -18,6 +18,8 @@ subject to the following restrictions:
btTriangleMesh::btTriangleMesh ()
:m_use32bitIndices(true),
m_use4componentVertices(true)
{
}
@@ -25,31 +27,68 @@ btTriangleMesh::btTriangleMesh ()
void btTriangleMesh::getLockedVertexIndexBase(unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart)
{
(void)subpart;
numverts = m_vertices.size();
*vertexbase = (unsigned char*)&m_vertices[0];
type = PHY_FLOAT;
stride = sizeof(btVector3);
if (m_use4componentVertices)
{
numverts = m_4componentVertices.size();
*vertexbase = (unsigned char*)&m_4componentVertices[0];
type = PHY_FLOAT;
stride = sizeof(btVector3);
} else
{
numverts = m_3componentVertices.size();
*vertexbase = (unsigned char*)&m_3componentVertices[0];
type = PHY_FLOAT;
stride = 3*sizeof(btScalar);
}
numfaces = m_indices.size()/3;
*indexbase = (unsigned char*) &m_indices[0];
indicestype = PHY_INTEGER;
indexstride = 3*sizeof(int);
if (m_use32bitIndices)
{
numfaces = m_32bitIndices.size()/3;
*indexbase = (unsigned char*) &m_32bitIndices[0];
indicestype = PHY_INTEGER;
indexstride = 3*sizeof(int);
} else
{
numfaces = m_16bitIndices.size()/3;
*indexbase = (unsigned char*) &m_16bitIndices[0];
indicestype = PHY_SHORT;
indexstride = 3*sizeof(short int);
}
}
void btTriangleMesh::getLockedReadOnlyVertexIndexBase(const unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,const unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart) const
{
(void)subpart;
numverts = m_vertices.size();
*vertexbase = (unsigned char*)&m_vertices[0];
type = PHY_FLOAT;
stride = sizeof(btVector3);
numfaces = m_indices.size()/3;
*indexbase = (unsigned char*) &m_indices[0];
indicestype = PHY_INTEGER;
indexstride = 3*sizeof(int);
if (m_use4componentVertices)
{
numverts = m_4componentVertices.size();
*vertexbase = (unsigned char*)&m_4componentVertices[0];
type = PHY_FLOAT;
stride = sizeof(btVector3);
} else
{
numverts = m_3componentVertices.size();
*vertexbase = (unsigned char*)&m_3componentVertices[0];
type = PHY_FLOAT;
stride = 3*sizeof(btScalar);
}
if (m_use32bitIndices)
{
numfaces = m_32bitIndices.size()/3;
*indexbase = (unsigned char*) &m_32bitIndices[0];
indicestype = PHY_INTEGER;
indexstride = 3*sizeof(int);
} else
{
numfaces = m_16bitIndices.size()/3;
*indexbase = (unsigned char*) &m_16bitIndices[0];
indicestype = PHY_SHORT;
indexstride = 3*sizeof(short int);
}
}

73
src/BulletCollision/CollisionShapes/btTriangleMesh.h
View File

@@ -24,27 +24,80 @@ subject to the following restrictions:
///TriangleMesh provides storage for a concave triangle mesh. It can be used as data for the btTriangleMeshShape.
class btTriangleMesh : public btStridingMeshInterface
{
btAlignedObjectArray<btVector3> m_vertices;
btAlignedObjectArray<int> m_indices;
btAlignedObjectArray<btVector3> m_4componentVertices;
btAlignedObjectArray<float> m_3componentVertices;
btAlignedObjectArray<int> m_32bitIndices;
btAlignedObjectArray<short int> m_16bitIndices;
bool m_use32bitIndices;
bool m_use4componentVertices;
public:
btTriangleMesh ();
void setUse32bitIndices(bool use32bitIndices)
{
m_use32bitIndices = use32bitIndices;
}
bool getUse32bitIndices() const
{
return m_use32bitIndices;
}
void setUse4componentVertices(bool use4componentVertices)
{
m_use4componentVertices = use4componentVertices;
}
bool getUse4componentVertices() const
{
return m_use4componentVertices;
}
void addTriangle(const btVector3& vertex0,const btVector3& vertex1,const btVector3& vertex2)
{
int curIndex = m_indices.size();
m_vertices.push_back(vertex0);
m_vertices.push_back(vertex1);
m_vertices.push_back(vertex2);
if (m_use4componentVertices)
{
m_4componentVertices.push_back(vertex0);
m_4componentVertices.push_back(vertex1);
m_4componentVertices.push_back(vertex2);
} else
{
m_3componentVertices.push_back(vertex0.getX());
m_3componentVertices.push_back(vertex0.getY());
m_3componentVertices.push_back(vertex0.getZ());
m_indices.push_back(curIndex++);
m_indices.push_back(curIndex++);
m_indices.push_back(curIndex++);
m_3componentVertices.push_back(vertex1.getX());
m_3componentVertices.push_back(vertex1.getY());
m_3componentVertices.push_back(vertex1.getZ());
m_3componentVertices.push_back(vertex2.getX());
m_3componentVertices.push_back(vertex2.getY());
m_3componentVertices.push_back(vertex2.getZ());
}
if (m_use32bitIndices)
{
int curIndex = m_32bitIndices.size();
m_32bitIndices.push_back(curIndex++);
m_32bitIndices.push_back(curIndex++);
m_32bitIndices.push_back(curIndex++);
} else
{
int curIndex = m_16bitIndices.size();
m_16bitIndices.push_back(curIndex++);
m_16bitIndices.push_back(curIndex++);
m_16bitIndices.push_back(curIndex++);
}
}
int getNumTriangles() const
{
return m_indices.size() / 3;
if (m_use32bitIndices)
{
return m_32bitIndices.size() / 3;
}
return m_16bitIndices.size() / 3;
}