public static Tuple4 GetShadedColor(Tuple4 objectPoint, IMaterial material, Tuple4 white, Tuple4 lightDirection, double intensity, Tuple4 eyeVector, Tuple4 pointOnSurface, Tuple4 surfaceNormal)
{
Tuple4 color = material.GetColor(objectPoint);
Lighting lighting = GetIntensity(material, lightDirection, intensity, eyeVector, pointOnSurface, surfaceNormal);
var shadedColor = Tuple4.Add(
Tuple4.Scale(color, lighting.intensity * lighting.diffuse),
Tuple4.Scale(white, lighting.specular)
);
return(shadedColor);
}
public void Replace_material_color(string id, double ambient)
{
var f = figure[id];
IMaterial m = f.Material;
f.Material = new SolidColorMaterial(
m.GetColor(Tuple4.ZeroPoint),
ambient,
m.Diffuse,
m.Specular,
m.Shininess,
m.Reflective,
m.RefractiveIndex,
m.Transparency);
}
public static Tuple4 GetAmbientColor(Tuple4 objectPoint, IMaterial material)
{
return(Tuple4.Scale(material.GetColor(objectPoint), material.Ambient));
}