Class PerlinTurbulence

java.lang.Object

com.github.weisj.jsvg.geometry.noise.PerlinTurbulence

public final class PerlinTurbulence
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	PerlinTurbulence.StitchInfo

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	BM
private static final int	BSize
private final double[]	fGradient
private final int	numOctaves
private static final double	PerlinN
private static final int	RAND_a
private static final int	RAND_m
private static final int	RAND_q
private static final int	RAND_r
private final int[]	uLatticeSelector
private final double	xFrequency
private final double	yFrequency

Constructor Summary

Constructors

Constructor	Description
PerlinTurbulence(int seed, int numOctaves, double xFrequency, double yFrequency)

Method Summary

Modifier and Type	Method	Description
private double	adjustFrequency(double frequency, double tileSize)
private static double	curve(double t)
private void	init(int seed)
private static double	lerp(double t, double a, double b)
private void	noise2(double[] noiseChannels, double vec0, double vec1, @Nullable PerlinTurbulence.StitchInfo stitchInfo)
private static int	random(int seed)
private static int	setupSeed(int seed)
void	turbulence(double[] turbulenceChannels, double pointX, double pointY, boolean fractalSum, @Nullable PerlinTurbulence.StitchInfo stitchInfo, Rectangle2D.Double tile)

Methods inherited from class Object

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

Field Details

RAND_m

private static final int RAND_m

See Also:

• Constant Field Values

RAND_a

private static final int RAND_a

See Also:

• Constant Field Values

RAND_q

private static final int RAND_q

See Also:

• Constant Field Values

RAND_r

private static final int RAND_r

See Also:

• Constant Field Values

BSize

private static final int BSize

See Also:

• Constant Field Values

BM

private static final int BM

See Also:

• Constant Field Values

PerlinN

private static final double PerlinN

See Also:

• Constant Field Values

uLatticeSelector

private final int[] uLatticeSelector

fGradient

private final double[] fGradient

numOctaves

private final int numOctaves

xFrequency

private final double xFrequency

yFrequency

private final double yFrequency

Constructor Details

PerlinTurbulence

public PerlinTurbulence(int seed,
 int numOctaves,
 double xFrequency,
 double yFrequency)

Method Details

setupSeed

private static int setupSeed(int seed)

random

private static int random(int seed)

init

private void init(int seed)

curve

private static double curve(double t)

lerp

private static double lerp(double t,
 double a,
 double b)

noise2

private void noise2(double[] noiseChannels,
 double vec0,
 double vec1,
 @Nullable
 @Nullable PerlinTurbulence.StitchInfo stitchInfo)

turbulence

public void turbulence(double[] turbulenceChannels,
 double pointX,
 double pointY,
 boolean fractalSum,
 @Nullable
 @Nullable PerlinTurbulence.StitchInfo stitchInfo,
 @Nullable
 Rectangle2D.Double tile)

adjustFrequency

private double adjustFrequency(double frequency,
 double tileSize)