public Vec3 Value(double u, double v, Vec3 p)
{
double noise = 0.5;
switch (_type)
{
default:
case Type.DEFAULT: noise = _noise.Noise(p * _scale); break;
case Type.TURB: noise = _noise.Turb(p * _scale); break;
case Type.SIN_X: noise = Math.Sin(_scale * p.X + 10 * _noise.Turb(p * _scale)); break;
case Type.SIN_Y: noise = Math.Sin(_scale * p.Y + 10 * _noise.Turb(p * _scale)); break;
case Type.SIN_Z: noise = Math.Sin(_scale * p.Z + 10 * _noise.Turb(p * _scale)); break;
}
return(Vec3.Create(1.0) * (noise * 0.5 + 0.5));
}