internal PhongMaterial(IPhongMaterialParameters p, PhongLight light0, bool overrideColor)
 {
     _material      = p;
     _light0        = light0;
     _overrideColor = overrideColor;
 }
 public static IPhongMaterial Create(IPhongMaterialParameters p, PhongLight light0, bool overrideColor = true)
 {
     return(new PhongMaterial(p, light0, overrideColor));
 }