Class ColorUtil

java.lang.Object

com.github.weisj.jsvg.util.ColorUtil

public final class ColorUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final int[]	LinearRGBtoSRGB
private static final int[][]	LinearRGBtoSRGBPre
private static final int[]	SRGBtoLinearRGB
private static final int[][]	SRGBtoLinearRGBPre	Color space conversion lookup tables.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ColorUtil()

Method Summary

Modifier and Type	Method	Description
static int	clampColor(int v)
static int	computeLuminance(int r, int g, int b)
private static int	convertLinearRGBtoSRGB(int color, float alpha)	Helper function to convert a color component in linear RGB space to SRGB space.
private static int	convertSRGBtoLinearRGB(int color, float alpha)	Helper function to convert a color component in sRGB space to linear RGB space.
static int	div255(int x)
static void	HSLtoRGB(float h, float s, float l, int @NotNull [] rgb)
private static float	hue2RGB(float v1, float v2, float vH)
static int	linearRGBtoSRGB(int argb)
static int	linearRGBtoSRGBBand(int value)
static void	linearRGBtoSRGBinPlace(int @NotNull [] argb)
static void	linearRGBtoSRGBPreInPlace(int @NotNull [] argb)
static void	RGBPretoHSL(int r, int g, int b, int a, float @NotNull [] hsl)
static int	sRGBtoLinearRGB(int argb)
static int	sRGBtoLinearRGBBand(int value)
static void	sRGBtoLinearRGBinPlace(int @NotNull [] argb)
static void	sRGBtoLinearRGBPreInPlace(int @NotNull [] argb)
static int	toRgbRange(double value)
static String	toString(@Nullable Color c)
static Color	withAlpha(@NotNull Color c, float alpha)

Methods inherited from class Object

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

Field Details

SRGBtoLinearRGBPre

private static final int[][] SRGBtoLinearRGBPre

Color space conversion lookup tables.

SRGBtoLinearRGB

private static final int[] SRGBtoLinearRGB

LinearRGBtoSRGBPre

private static final int[][] LinearRGBtoSRGBPre

LinearRGBtoSRGB

private static final int[] LinearRGBtoSRGB

Constructor Details

ColorUtil

private ColorUtil()

Method Details

div255

public static int div255(int x)

computeLuminance

public static int computeLuminance(int r,
 int g,
 int b)

toRgbRange

public static int toRgbRange(double value)

withAlpha

public static Color withAlpha(@NotNull
 @NotNull Color c,
 float alpha)

toString

public static String toString(@Nullable
 @Nullable Color c)

RGBPretoHSL

public static void RGBPretoHSL(int r,
 int g,
 int b,
 int a,
 float @NotNull [] hsl)

HSLtoRGB

public static void HSLtoRGB(float h,
 float s,
 float l,
 int @NotNull [] rgb)

hue2RGB

private static float hue2RGB(float v1,
 float v2,
 float vH)

sRGBtoLinearRGBinPlace

public static void sRGBtoLinearRGBinPlace(int @NotNull [] argb)

linearRGBtoSRGBinPlace

public static void linearRGBtoSRGBinPlace(int @NotNull [] argb)

sRGBtoLinearRGBPreInPlace

public static void sRGBtoLinearRGBPreInPlace(int @NotNull [] argb)

linearRGBtoSRGBPreInPlace

public static void linearRGBtoSRGBPreInPlace(int @NotNull [] argb)

sRGBtoLinearRGBBand

public static int sRGBtoLinearRGBBand(int value)

sRGBtoLinearRGB

public static int sRGBtoLinearRGB(int argb)

linearRGBtoSRGBBand

public static int linearRGBtoSRGBBand(int value)

linearRGBtoSRGB

public static int linearRGBtoSRGB(int argb)

convertSRGBtoLinearRGB

private static int convertSRGBtoLinearRGB(int color,
 float alpha)

Helper function to convert a color component in sRGB space to linear RGB space. Used to build a static lookup table.

convertLinearRGBtoSRGB

private static int convertLinearRGBtoSRGB(int color,
 float alpha)

Helper function to convert a color component in linear RGB space to SRGB space. Used to build a static lookup table.

clampColor

public static int clampColor(int v)