function vertex(in_pos, in_nrm, in_diff, in_spec, in_tex)
{
	this.pos=in_pos;
	this.nrm=in_nrm;
	this.diff=in_diff;
	this.spec=in_spec;
	this.tex=in_tex;
}

vertex.prototype.clone = function()
{
	return new vertex(this.pos.clone(), this.nrm.clone(), this.diff.clone(), this.spec.clone(), this.tex.clone());
}