public override bool Equals(object obj)
{
var other = obj as Material;
return((other != null) &&
(Color.Equals(other.Color)) &&
(Ambient.IsEqual(other.Ambient)) &&
(Diffuse.IsEqual(other.Diffuse)) &&
(Specular.IsEqual(other.Specular)) &&
(Shininess.IsEqual(other.Shininess)) &&
(Reflective.IsEqual(other.Reflective)) &&
(Transparency.IsEqual(other.Transparency)) &&
(RefractiveIndex.IsEqual(other.RefractiveIndex)));
}