public void CalculatePhongLight(Vect4 light, Vect4 view, float ka, float kd, float ks, float h)
{
//Check if face is visible
if (mr.enabled == true)
{
float Ia = ka * 1;
float Id = kd * normal.DotProduct(normal, light);
//calculate Reflection vector
//dot product of Light * normal
float dp = light.DotProduct(normal, light) * 2;
Vect4 R = new Vect4(normal.x * dp, normal.y * dp, normal.z * dp);
R = R.Substraction(light);
R.Normalize();
float Is = ks * Mathf.Pow(R.DotProduct(R, view), h);
float I = Ia + Id + Is;
mr.material.SetColor("_Color", IndexedFace.Instance.materialColor * I);
}
}
public void CalculateNormal(Vect4 p1, Vect4 p2, Vect4 p3)
{
normal = p1.CrossProduct(p2.Substraction(p1), p3.Substraction(p1));
normal = normal.Normalize();
}