public static RealColor Average(RealColor[] values)
{
RealColor col = Black.Copy();
for (int x = 0; x < values.Length; x++)
{
col.Add(values[x]);
}
col.Multiply(1f / (float)values.Length);
return(col);
}
public static RealColor Average(IEnumerable <RealColor> values)
{
RealColor col = Black.Copy();
foreach (RealColor val in values)
{
col.Add(val);
}
col.Multiply(1f / (float)values.Count());
return(col);
}
/// <summary>
/// Lambertian shades a base color.
/// </summary>
/// <param name="baseColor"></param>
/// <param name="surfaceNormal"></param>
/// <param name="incomingColor"></param>
/// <param name="direction"></param>
/// <returns>base * ambient * Dot(normal, direction)</returns>
public static RealColor LambertianShade(RealColor baseColor, Vector3 surfaceNormal, RealColor incomingColor, Vector3 direction, RealColor ambient)
{
float u = Vector3.Dot(surfaceNormal, direction);
if (u < 0f)
{
return(baseColor.Copy());
}
RealColor diffuse = baseColor.Copy().Multiply(ambient).Multiply(u);
diffuse.Add(baseColor);
//diffuse.Clamp();
return(diffuse);
}
