Package squidpony.squidmath

Class MitchellNoise

java.lang.Object

squidpony.squidmath.MitchellNoise

public class MitchellNoise
extends Object

An arbitrary-dimensional noise generator; it's not suitable for real-time use, but could be very useful when used with unconventional axes, particularly during level generation. It produces smooth, non-artifact-prone gradient noise with lots of rounded "raindrops on a window" shapes. It is very biased toward central results (near 0.0) and only rarely returns results near -1.0 or 1.0, the extremes of its range.
Sample of 2D MitchellNoise.
Created by Tommy Ettinger on 11/6/2019 using code by Donald Mitchell.

See Also:

PhantomNoise also produces arbitrary-dimensional noise, is faster, and is less centrally-biased

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MitchellNoise.Vec4

Field Summary

Fields

Modifier and Type	Field	Description
MitchellNoise.Vec4[]	coef
int[]	floors
int	MAX_DIM
long	seed

Constructor Summary

Constructors

Constructor	Description
MitchellNoise()
MitchellNoise(long seed, int maxDimension)

Method Summary

Modifier and Type	Method	Description
double	arbitraryNoise(long seed, double... points)
static long	latticeValue(long lat)
double	spline(int dim, long lattice)

Methods inherited from class java.lang.Object

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

Field Details

MAX_DIM

public final int MAX_DIM

coef

public final MitchellNoise.Vec4[] coef

floors

public final int[] floors

seed

public long seed

Constructor Details

MitchellNoise

public MitchellNoise()

MitchellNoise

public MitchellNoise(long seed, int maxDimension)

Method Details

latticeValue

public static long latticeValue(long lat)

spline

public double spline(int dim, long lattice)

arbitraryNoise

public double arbitraryNoise(long seed, double... points)