Extension Name E57_EXT_surface_normals XML namespace NOR xmlns:nor="http://www.libe57.org/E57_EXT_surface_normals.txt" Contact Stan Coleby, Intelisum (scoleby @ intelisum.com) Contributors none. Ve......extension adds a surface normal vector to each point to indicate the...component of a surface normal vector. "nor:normalY" Float/ScaledInteger...