internal static extern void dGeomTriMeshSetData(dGeomID g, dTriMeshDataID Data);
internal static extern void dGeomTriMeshDataUpdate(dTriMeshDataID g);
internal static extern void dGeomTriMeshDataSetBuffer(dTriMeshDataID g, IntPtr buf);
internal static extern dGeomID dCreateTriMesh(dSpaceID space, dTriMeshDataID Data, dTriCallback Callback, dTriArrayCallback ArrayCallback, dTriRayCallback RayCallback);
internal static extern void dGeomTriMeshDataPreprocess(dTriMeshDataID g);
internal static extern void dGeomTriMeshDataGetBuffer(dTriMeshDataID g, out IntPtr buf, out int bufLen);
internal static extern void dGeomTriMeshDataBuildSimple1( dTriMeshDataID g, DataHandle Vertices, int VertexCount, DataHandle Indices, int IndexCount, DataHandle Normals);
internal static extern void dGeomTriMeshDataBuildDouble1( dTriMeshDataID g, DataHandle Vertices, int VertexStride, int VertexCount, DataHandle Indices, int IndexCount, int TriStride, DataHandle Normals);
internal static extern void dGeomTriMeshDataBuildSingle( dTriMeshDataID g, DataHandle Vertices, int VertexStride, int VertexCount, DataHandle Indices, int IndexCount, int TriStride);
internal static extern IntPtr dGeomTriMeshDataGet(dTriMeshDataID g, dTriMeshDataType data_id);
internal static extern void dGeomTriMeshDataSet(dTriMeshDataID g, dTriMeshDataType data_id, IntPtr in_data);