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Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, 
including commercial applications, and to alter it and redistribute it freely, 
subject to the following restrictions:

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.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.


#include "BulletCollision/CollisionShapes/btStridingMeshInterface.h"
#include <LinearMath/btVector3.h>
#include "LinearMath/btAlignedObjectArray.h"
struct btMyTriangle
      btVector3   m_vert0;
      btVector3   m_vert1;
      btVector3   m_vert2;

///TriangleMesh provides storage for a concave triangle mesh. It can be used as data for the btTriangleMeshShape.
00031 class btTriangleMesh : public btStridingMeshInterface
      btAlignedObjectArray<btMyTriangle>  m_triangles;

            btTriangleMesh ();

            void  addTriangle(const btVector3& vertex0,const btVector3& vertex1,const btVector3& vertex2)
                  btMyTriangle tri;
                  tri.m_vert0 = vertex0;
                  tri.m_vert1 = vertex1;
                  tri.m_vert2 = vertex2;

            int getNumTriangles() const
                  return m_triangles.size();

            const btMyTriangle&     getTriangle(int index) const
                  return m_triangles[index];

//StridingMeshInterface interface implementation

            virtual void      getLockedVertexIndexBase(unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0);

            virtual void      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=0) const;

            /// unLockVertexBase finishes the access to a subpart of the triangle mesh
            /// make a call to unLockVertexBase when the read and write access (using getLockedVertexIndexBase) is finished
00065             virtual void      unLockVertexBase(int subpart) {}

            virtual void      unLockReadOnlyVertexBase(int subpart) const {}

            /// getNumSubParts returns the number of seperate subparts
            /// each subpart has a continuous array of vertices and indices
            virtual int       getNumSubParts() const;
            virtual void      preallocateVertices(int numverts){}
            virtual void      preallocateIndices(int numindices){}



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