if(normal.z>0.0)
	{
		
		u = (normal.x / (2.0*(1.0 + normal.z))) + 0.5;
		v = (normal.y / (2.0*(1.0 + normal.z))) + 0.5;

	}
	else
	{
		u = (normal.x / (2.0*(1.0 - normal.z))) + 0.5;
		v = (normal.y / (2.0*(1.0 - normal.z))) + 0.5;
	}