public Camera(Point3 at, Point3 lookat, Vector3 up, double flength, ImageSize size)
: this(at, lookat, up, flength, size.Width, size.Height)
{
}
/// <summary>
/// Just return p.GetHashCode()
/// </summary>
/// <param name="p"></param>
/// <returns>function value</returns>
public static double Noise(Point3 p)
{
var r = p.GetHashCode();
return(Math.Abs(r / int.MaxValue));
}
/// <summary>
/// Rectified perlin noise
/// </summary>
/// <param name="p"></param>
/// <returns>function value</returns>
public static double PerlinRidged(Point3 p)
{
var r = ImprovedNoise.noise(p.x, p.y, p.z);
return(Math.Abs(r));
}
/// <summary>
/// Basic perlin noise
/// </summary>
/// <param name="p"></param>
/// <returns>function value</returns>
public static double Perlin(Point3 p)
{
var r = ImprovedNoise.noise(p.x, p.y, p.z);
return(r / 2 + 0.5);
}
/// <summary>
/// Layered onion texture
/// </summary>
/// <param name="p">point</param>
/// <returns>function value</returns>
public static double Onion(Point3 p)
{
var r = Math.Sqrt(p.x * p.x + p.y * p.y + p.z * p.z);
return(r - Math.Floor(r));
}
/// <summary>
/// Good old Perlin noise
/// </summary>
/// <param name="p">point</param>
/// <returns>function value</returns>
public static Vector3 Perlin(Point3 p)
{
return(ImprovedNoise.noiseVector(p.x, p.y, p.z));
}