infovis.visualization.color
Class Colors

java.lang.Object
  infovis.visualization.color.Colors

public class Colors
extends Object

Class Colors

Version:

$Revision: 1.5 $

Author:

Jean-Daniel Fekete

Field Summary

static ColorSpace	GRAY
static Colors	instance
static ColorSpace	sRGB
static float	UprimeWhite
static float	VprimeWhite
static float[]	XYZwhite

Constructor Summary

Colors()

Method Summary

static int	comptoRGB(float r, float g, float b)
static int	comptoRGB(int r, int g, int b)
static float	getLuminance(Color c)
static float[]	LabtoLCH(float[] Lab)
static float[]	LabtoXYZ(float[] Lab) Converts from La*b* to XYZ.
static float[]	LCHtoLab(float[] lch) Convert from LCH to La*b* colorspace.
static float[]	LCHtoRGB(float[] comp)
static int	LCHtoRGB(float l, float c, float h)
static float[]	RGBtoXYZ(float[] rgb)
static float[]	XYZtoLab(float[] xyz) Converts from XYZ to La*b*.
static float[]	XYZtoRGB(float[] xyz)

Methods inherited from class java.lang.Object

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

Field Detail

sRGB

public static ColorSpace sRGB

GRAY

public static ColorSpace GRAY

UprimeWhite

public static float UprimeWhite

VprimeWhite

public static float VprimeWhite

instance

public static Colors instance

XYZwhite

public static float[] XYZwhite

Constructor Detail

Colors

public Colors()

Method Detail

RGBtoXYZ

public static float[] RGBtoXYZ(float[] rgb)

XYZtoRGB

public static float[] XYZtoRGB(float[] xyz)

getLuminance

public static float getLuminance(Color c)

LabtoXYZ

public static float[] LabtoXYZ(float[] Lab)

Converts from La*b* to XYZ.

Parameters:

Lab - the La*b* values.

Returns:

the XYZ values. Reuses the array.

XYZtoLab

public static float[] XYZtoLab(float[] xyz)

Converts from XYZ to La*b*.

Parameters:

xyz - the XYZ parameters

Returns:

the La*b* parameters in the passed array.

LCHtoLab

public static float[] LCHtoLab(float[] lch)

Convert from LCH to La*b* colorspace.

Parameters:

lch -

Returns:

the La*b* values from the LCH colorspace.

LabtoLCH

public static float[] LabtoLCH(float[] Lab)

LCHtoRGB

public static float[] LCHtoRGB(float[] comp)

LCHtoRGB

public static int LCHtoRGB(float l,
                           float c,
                           float h)

comptoRGB

public static int comptoRGB(float r,
                            float g,
                            float b)

comptoRGB

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