public void Add(byte[] mesh, short productTypeId, int productLabel, int geometryLabel, XbimMatrix3D? transform = null, short modelId = 0,
ITextureMapping textureMappingMethod = null)
{
var frag = new XbimMeshFragment(PositionCount, TriangleIndexCount, productTypeId, productLabel, geometryLabel, modelId);
Read(mesh, transform);
if (textureMappingMethod != null)
{
AddTextureMapping(textureMappingMethod.GetTextureMap(this._unfrozenPositions, this._unfrozenNormals, this._unfrozenTriangleIndices));
}
frag.EndPosition = PositionCount - 1;
frag.EndTriangleIndex = TriangleIndexCount - 1;
_meshes.Add(frag);
}
