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 double F2  
    protected static double F3  
    protected static double F4  
    protected static double G2  
    protected static double G22  
    protected static double G3  
    protected static double G4  
    protected static double G42  
    protected static double G43  
    protected static double G44  
    protected static int[][] grad4  
    protected double offsetW  
    protected static int[][] simplex  
    protected static double SQRT_3  
    protected static 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