/* Shader description goes here */
surface
PN_outputs(float Kd = 1;
	output varying point P_world = 0;
	output varying point P_object = 0;
	output varying vector N_world = 0;
	output varying vector N_object = 0;
)

{
color	surfcolor = 1;
normal	n = normalize(N);
normal	nf = faceforward(n, I);




P_world = transform("world",P);
P_object = transform("object",P);

N_world = ntransform("world",N);
N_object = ntransform("object",N);

Oi = Os;


color	diffusecolor = Kd * diffuse(nf);
Ci = Oi * Cs * surfcolor * diffusecolor;
}