protected virtual void ReadSubMeshBoneAssignment( BinaryReader reader, SubMesh sub )
{
VertexBoneAssignment assignment = new VertexBoneAssignment();
// read the data from the file
assignment.vertexIndex = ReadInt( reader );
assignment.boneIndex = ReadUShort( reader );
assignment.weight = ReadFloat( reader );
// add the assignment to the mesh
sub.AddBoneAssignment( assignment );
}