Package org.bukkit.util.noise

Class SimplexNoiseGenerator

java.lang.Object

org.bukkit.util.noise.NoiseGenerator

org.bukkit.util.noise.PerlinNoiseGenerator

org.bukkit.util.noise.SimplexNoiseGenerator

public class SimplexNoiseGenerator
extends PerlinNoiseGenerator

Generates simplex-based noise.

This is a modified version of the freely published version in the paper by Stefan Gustavson at http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf

Field Summary

Fields

Modifier and Type	Field	Description
protected static final double	F2
protected static final double	F3
protected static final double	F4
protected static final double	G2
protected static final double	G22
protected static final double	G3
protected static final double	G4
protected static final double	G42
protected static final double	G43
protected static final double	G44
protected static final int[][]	grad4
protected double	offsetW
protected static final int[][]	simplex
protected static final double	SQRT_3
protected static final double	SQRT_5

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

grad3

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

offsetX, offsetY, offsetZ, perm

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SimplexNoiseGenerator()
	SimplexNoiseGenerator(long seed)	Creates a seeded simplex noise generator for the given seed
	SimplexNoiseGenerator(Random rand)	Creates a seeded simplex noise generator with the given Random
	SimplexNoiseGenerator(World world)	Creates a seeded simplex noise generator for the given world

Method Summary

Modifier and Type	Method	Description
protected static double	dot(int[] g, double x, double y)
protected static double	dot(int[] g, double x, double y, double z)
protected static double	dot(int[] g, double x, double y, double z, double w)
static SimplexNoiseGenerator	getInstance()	Gets the singleton unseeded instance of this generator
static double	getNoise(double xin)	Computes and returns the 1D unseeded simplex noise for the given coordinates in 1D space
static double	getNoise(double xin, double yin)	Computes and returns the 2D unseeded simplex noise for the given coordinates in 2D space
static double	getNoise(double xin, double yin, double zin)	Computes and returns the 3D unseeded simplex noise for the given coordinates in 3D space
static double	getNoise(double x, double y, double z, double w)	Computes and returns the 4D simplex noise for the given coordinates in 4D space
double	noise(double xin, double yin)	Computes and returns the 2D noise for the given coordinates in 2D space
double	noise(double xin, double yin, double zin)	Computes and returns the 3D noise for the given coordinates in 3D space
double	noise(double x, double y, double z, double w)	Computes and returns the 4D simplex noise for the given coordinates in 4D space

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

getNoise, getNoise, getNoise

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

fade, floor, 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 Details

SQRT_3

protected static final double SQRT_3

SQRT_5

protected static final double SQRT_5

F2

protected static final double F2

G2

protected static final double G2

G22

protected static final double G22

F3

protected static final double F3

See Also:

• Constant Field Values

G3

protected static final double G3

See Also:

• Constant Field Values

F4

protected static final double F4

G4

protected static final double G4

G42

protected static final double G42

G43

protected static final double G43

G44

protected static final double G44

grad4

protected static final int[][] grad4

simplex

protected static final int[][] simplex

offsetW

protected double offsetW

Constructor Details

SimplexNoiseGenerator

protected SimplexNoiseGenerator()

SimplexNoiseGenerator

public SimplexNoiseGenerator(@NotNull
 World world)

Creates a seeded simplex noise generator for the given world

Parameters:

world - World to construct this generator for

SimplexNoiseGenerator

public SimplexNoiseGenerator(long seed)

Creates a seeded simplex noise generator for the given seed

Parameters:

seed - Seed to construct this generator for

SimplexNoiseGenerator

public SimplexNoiseGenerator(@NotNull
 Random rand)

Creates a seeded simplex noise generator with the given Random

Parameters:

rand - Random to construct with

Method Details

dot

protected static double dot(@NotNull
 int[] g,
 double x,
 double y)

dot

protected static double dot(@NotNull
 int[] g,
 double x,
 double y,
 double z)

dot

protected static double dot(@NotNull
 int[] g,
 double x,
 double y,
 double z,
 double w)

getNoise

public static double getNoise(double xin)

Computes and returns the 1D unseeded simplex noise for the given coordinates in 1D space

Parameters:

xin - X coordinate

Returns:

Noise at given location, from range -1 to 1

getNoise

public static double getNoise(double xin,
 double yin)

Computes and returns the 2D unseeded simplex noise for the given coordinates in 2D space

Parameters:

xin - X coordinate

yin - Y coordinate

Returns:

Noise at given location, from range -1 to 1

getNoise

public static double getNoise(double xin,
 double yin,
 double zin)

Computes and returns the 3D unseeded simplex noise for the given coordinates in 3D space

Parameters:

xin - X coordinate

yin - Y coordinate

zin - Z coordinate

Returns:

Noise at given location, from range -1 to 1

getNoise

public static double getNoise(double x,
 double y,
 double z,
 double w)

Computes and returns the 4D simplex noise for the given coordinates in 4D space

Parameters:

x - X coordinate

y - Y coordinate

z - Z coordinate

w - W coordinate

Returns:

Noise at given location, from range -1 to 1

noise

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

Description copied from class: NoiseGenerator

Computes and returns the 3D noise for the given coordinates in 3D space

Overrides:

noise in class PerlinNoiseGenerator

Parameters:

xin - X coordinate

yin - Y coordinate

zin - Z coordinate

Returns:

Noise at given location, from range -1 to 1

noise

public double noise(double xin,
 double yin)

Description copied from class: NoiseGenerator

Computes and returns the 2D noise for the given coordinates in 2D space

Overrides:

noise in class NoiseGenerator

Parameters:

xin - X coordinate

yin - Y coordinate

Returns:

Noise at given location, from range -1 to 1

noise

public double noise(double x,
 double y,
 double z,
 double w)

Computes and returns the 4D simplex noise for the given coordinates in 4D space

Parameters:

x - X coordinate

y - Y coordinate

z - Z coordinate

w - W coordinate

Returns:

Noise at given location, from range -1 to 1

getInstance

@NotNull
public static SimplexNoiseGenerator getInstance()

Gets the singleton unseeded instance of this generator

Returns:

Singleton