net.glowstone.util.noise

Class SimplexNoise

java.lang.Object

org.bukkit.util.noise.NoiseGenerator

org.bukkit.util.noise.PerlinNoiseGenerator

net.glowstone.util.noise.PerlinNoise

net.glowstone.util.noise.SimplexNoise

public class SimplexNoise
extends PerlinNoise

A speed-improved simplex noise algorithm.

Based on example code by Stefan Gustavson (stegu@itn.liu.se). Optimisations by Peter Eastman (peastman@drizzle.stanford.edu). Better rank ordering method by Stefan Gustavson in 2012.

This could be sped up even further, but it's useful as is.

Field Summary

Fields

Modifier and Type	Field and Description
protected static double	F2
protected static double	F3
protected static double	G2
protected static double	G22
protected static double	G3
protected static double	G32
protected static double	G33
protected int[]	permMod12
protected static double	SQRT_3

Fields inherited from class org.bukkit.util.noise.NoiseGenerator

offsetX, offsetY, offsetZ, perm

Constructor Summary

Constructors

Constructor and Description
SimplexNoise(Random rand) Creates a simplex noise generator.

Method Summary

Modifier and Type	Method and Description
protected static double	dot(net.glowstone.util.noise.SimplexNoise.Grad g, double x, double y)
protected static double	dot(net.glowstone.util.noise.SimplexNoise.Grad g, double x, double y, double z)
static int	floor(double x)
protected double[]	get2dNoise(double[] noise, double x, double z, int sizeX, int sizeY, double scaleX, double scaleY, double amplitude)
protected double[]	get3dNoise(double[] noise, double x, double y, double z, int sizeX, int sizeY, int sizeZ, double scaleX, double scaleY, double scaleZ, double amplitude)
double	noise(double xin, double yin)
double	noise(double xin, double yin, double zin)

Methods inherited from class net.glowstone.util.noise.PerlinNoise

getNoise

Methods inherited from class org.bukkit.util.noise.PerlinNoiseGenerator

getInstance, getNoise, getNoise, getNoise, getNoise, getNoise, getNoise

Methods inherited from class org.bukkit.util.noise.NoiseGenerator

fade, grad, lerp, noise, noise, noise, noise, noise, noise, noise

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SQRT_3

protected static final double SQRT_3

See Also:

Constant Field Values

F2

protected static final double F2

See Also:

Constant Field Values

G2

protected static final double G2

See Also:

Constant Field Values

G22

protected static final double G22

See Also:

Constant Field Values

F3

protected static final double F3

See Also:

Constant Field Values

G3

protected static final double G3

See Also:

Constant Field Values

G32

protected static final double G32

See Also:

Constant Field Values

G33

protected static final double G33

See Also:

Constant Field Values

permMod12

protected final int[] permMod12

Constructor Detail

SimplexNoise

public SimplexNoise(Random rand)

Creates a simplex noise generator.

Parameters:

rand - the PRNG to use

Method Detail

floor

public static int floor(double x)

dot

protected static double dot(net.glowstone.util.noise.SimplexNoise.Grad g,
                            double x,
                            double y)

dot

protected static double dot(net.glowstone.util.noise.SimplexNoise.Grad g,
                            double x,
                            double y,
                            double z)

get2dNoise

protected double[] get2dNoise(double[] noise,
                              double x,
                              double z,
                              int sizeX,
                              int sizeY,
                              double scaleX,
                              double scaleY,
                              double amplitude)

Overrides:

get2dNoise in class PerlinNoise

get3dNoise

protected double[] get3dNoise(double[] noise,
                              double x,
                              double y,
                              double z,
                              int sizeX,
                              int sizeY,
                              int sizeZ,
                              double scaleX,
                              double scaleY,
                              double scaleZ,
                              double amplitude)

Overrides:

get3dNoise in class PerlinNoise

noise

public double noise(double xin,
                    double yin)

Overrides:

noise in class org.bukkit.util.noise.NoiseGenerator

noise

public double noise(double xin,
                    double yin,
                    double zin)

Overrides:

noise in class org.bukkit.util.noise.PerlinNoiseGenerator