private ColorVector GetLightingColor(PosVector point, PosVector normal)
{
var lightColor = new ColorVector();
foreach (var light in Scene.Lights)
{
// if not shaded
if (IsViewable(light.Position, point))
{
var lightVector = light.Position - point;
lightColor = lightColor + (light.Color * Math.Abs(PosVector.CosVectors(normal, lightVector)));
}
}
return(lightColor);
}
private ColorVector GetSpecularColor(Ray ray, double p)
{
var lightColor = new ColorVector();
foreach (var light in Scene.Lights)
{
// if not shaded
if (IsViewable(light.Position, ray.Position))
{
var lightSourceVector = light.Position - ray.Position;
var cosLightSource = PosVector.CosVectors(ray.Direction, lightSourceVector);
if (cosLightSource > double.Epsilon)
{
lightColor = lightColor * p; // + (light.Color * Math.Pow(cosLightSource, p));
}
}
}
return(lightColor);
}