net.returnvoid.color

Class XYZColor

java.lang.Object

net.returnvoid.color.XYZColor

All Implemented Interfaces:

RColor

public class XYZColor
extends java.lang.Object
implements RColor

A model for color in XYZ color space. A XYZColor can be converted to any other color model. To use this in Processing use the getColor() Method:

 fill(myXYZObject.getColor());
 

The difference between multiple color objects can be calculated with the methods of ColorDifference class.

X [0, XYZColor.REFERENCE_X] = [0, 95.047]
Y [0, XYZColor.REFERENCE_Y] = [0, 100]
Z [0, XYZColor.REFERENCE_Z] = [0, 108.883]
A = alpha = transparency [0, 100]

Author:

Diana Lange

Field Summary

Fields

Modifier and Type	Field and Description
static ColorSpace	NAME The ColorSpace of RGB colors.
static float	REFERENCE_X X Value for the specific illuminants and observers (2° [CIE 1931] - D65 - Daylight, sRGB, Adobe-RGB conversion)
static float	REFERENCE_Y Y Value for the specific illuminants and observers (2° [CIE 1931] - D65 - Daylight, sRGB, Adobe-RGB conversion)
static float	REFERENCE_Z Z Value for the specific illuminants and observers (2° [CIE 1931] - D65 - Daylight, sRGB, Adobe-RGB conversion)

Constructor Summary

Constructors

Constructor and Description
XYZColor(float... channels) Creates a new XYZColor object.
XYZColor(java.lang.Float x, java.lang.Float y, java.lang.Float z) Creates a new opaque XYZColor object.
XYZColor(java.lang.Float x, java.lang.Float y, java.lang.Float z, java.lang.Float alpha) Creates a new XYZColor object.

Method Summary

Modifier and Type	Method and Description
XYZColor	copy() Creates a deep copy of the object.
boolean	equals(RColor other) Checks if the input color is equal to this object.
java.lang.Float	getAlpha() Returns the value of alpha / transparency.
int	getColor() Returns a int representation of the current color.
ColorSpace	getColorSpace() Returns the color space of the color.
java.lang.String	getHexString() Returns a String representation of the current color using hexadecimal numbers.
static java.lang.Float	getLoss(RColor rvMean, java.util.ArrayList<RColor> lColors, ColorDifferenceMeasure m) Calculates the loss - the mean distance of all members of colors to rvMean.
static java.lang.Float	getLoss(RColor rvMean, java.util.ArrayList<RColor> lColors, ColorDifferenceMeasure m, int start, int end) Calculates the loss - the mean distance of all members of colors to rvMean.
static java.lang.Float	getLoss(RColor rvMean, RColor[] colors, ColorDifferenceMeasure m) Calculates the loss - the mean distance of all members of colors to rvMean.
static java.lang.Float	getLoss(RColor rvMean, RColor[] colors, ColorDifferenceMeasure m, int start, int end) Calculates the loss - the mean distance of all members of colors to rvMean.
static XYZColor	getMeanColor(java.util.ArrayList<RColor> colors) Calculates the mean color of the input colors
static XYZColor	getMeanColor(int start, int end, java.util.ArrayList<RColor> colors) Calculates the mean color of the input colors.
static XYZColor	getMeanColor(int start, int end, RColor... colors) Calculates the mean color of the input colors.
static XYZColor	getMeanColor(RColor... colors) Calculates the mean color of the input colors
java.lang.String	getName() Returns the name of the color space e.g.
int	getOpColor() Returns a int representation of the current color - but ignoring the alpha value.
java.lang.String	getOpHexString() Returns a String representation of the current color using hexadecimal numbers.
static XYZColor	getRandomXYZ() Creates a new opaque XYZColor with random values.
float[]	getValues() Returns the color values of the current object.
float[]	getValuesNormalized() Returns the normalized color values of the current object.
java.lang.Float	getX() Returns the current value of x of this color.
java.lang.Float	getY() Returns the current value of y of this color.
java.lang.Float	getZ() Returns the current value of z of this color.
static XYZColor	lerpColors(RColor input1, RColor input2, float amt) Lerps the two input colors and creates a new color.
XYZColor	setAlpha(java.lang.Float alpha) Sets the value of alpha / transparency.
XYZColor	setAlpha(int alpha) Sets the value of alpha / transparency.
XYZColor	setX(java.lang.Float x) Sets the x value.
XYZColor	setX(int x) Sets the x value.
XYZColor	setY(java.lang.Float y) Sets the y value.
XYZColor	setY(int y) Sets the y value.
XYZColor	setZ(java.lang.Float z) Sets the z value.
XYZColor	setZ(int z) Sets the z value.
HSBColor	toHSB() Returns a HSBColor representation of the current color.
LabColor	toLab() Returns a LabColor representation of the current color.
LCHColor	toLCH() Returns a LCHColor representation of the current color.
RGBColor	toRGB() Returns a RGBColor representation of the current color.
java.lang.String	toString()
XYZColor	toXYZ() Returns a XYZColor representation of the current color.

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final ColorSpace NAME

The ColorSpace of RGB colors.

REFERENCE_X

public static final float REFERENCE_X

X Value for the specific illuminants and observers (2° [CIE 1931] - D65 - Daylight, sRGB, Adobe-RGB conversion)

See Also:

Constant Field Values

REFERENCE_Y

public static final float REFERENCE_Y

Y Value for the specific illuminants and observers (2° [CIE 1931] - D65 - Daylight, sRGB, Adobe-RGB conversion)

See Also:

Constant Field Values

REFERENCE_Z

public static final float REFERENCE_Z

Z Value for the specific illuminants and observers (2° [CIE 1931] - D65 - Daylight, sRGB, Adobe-RGB conversion)

See Also:

Constant Field Values

Constructor Detail

XYZColor

public XYZColor(java.lang.Float x,
                java.lang.Float y,
                java.lang.Float z)

Creates a new opaque XYZColor object. The input values will be constrained to the valid range of XYZ.

Parameters:

x - The x value [0, REFERENCE_X] = [0, 95.047]

y - The y value [0, REFERENCE_Y] = [0, 100]

z - The z value [0, REFERENCE_Z] = [0, 108.883]

XYZColor

public XYZColor(java.lang.Float x,
                java.lang.Float y,
                java.lang.Float z,
                java.lang.Float alpha)

Creates a new XYZColor object. The input values will be constrained to the valid range of XYZ.

Parameters:

x - The x value [0, REFERENCE_X] = [0, 95.047]

y - The y value [0, REFERENCE_Y] = [0, 100]

z - The z value [0, REFERENCE_Z] = [0, 108.883]

alpha - THe alpha value [0, 100]

XYZColor

public XYZColor(float... channels)

Creates a new XYZColor object. The input values will be constrained to the valid range of XYZColor.

Parameters:

channels - Either [x, y, z] or [x, y, z, alpha].

Method Detail

getColor

public int getColor()

Description copied from interface: RColor

Returns a int representation of the current color. The range will be between 0xFFFFFFFF and 0x00000000. Using this, the color object can be used to set the color within Processing. Example:

 HSBColor hsb = new HSBColor(244, 100, 100);
 fill(hsb.getColor());
 

Specified by:

getColor in interface RColor

Returns:

the color value of the object.

setAlpha

public XYZColor setAlpha(java.lang.Float alpha)

Description copied from interface: RColor

Sets the value of alpha / transparency. The range of alpha depends on the model of the color space. For RGB alpha will have a range of [0, 255]. For all other color spaces the range is [0, 100]. Zero always means that the color is completely transparent. The high value means that the color is completely opaque.

Specified by:

setAlpha in interface RColor

Parameters:

alpha - The value of the colors transparency.

Returns:

The current color object.

setAlpha

public XYZColor setAlpha(int alpha)

Sets the value of alpha / transparency. The range of alpha is [0, 100]. Zero always means that the color is completely transparent. The high value means that the color is completely opaque.

Parameters:

alpha - The value of the colors transparency.

Returns:

The current color object.

getAlpha

public java.lang.Float getAlpha()

Description copied from interface: RColor

Returns the value of alpha / transparency. The range of alpha depends on the model of the color space. For RGB alpah will have a range of [0, 255]. For all other color spaces the range is [0, 100]. Zero always means that the color is completely transparent. The high value means that the color is completely opaque.

Specified by:

getAlpha in interface RColor

Returns:

The value of transparency.

setX

public XYZColor setX(java.lang.Float x)

Sets the x value. The input value will be constrained to the valid range of XYZ.

Parameters:

x - The new x value [0, REFERENCE_X] = [0, 95.047].

Returns:

The current XYZColor object.

setX

public XYZColor setX(int x)

Sets the x value. The input value will be constrained to the valid range of XYZ.

Parameters:

x - The new x value [0, REFERENCE_X] = [0, 95.047].

Returns:

The current XYZColor object.

setY

public XYZColor setY(java.lang.Float y)

Sets the y value. The input value will be constrained to the valid range of XYZ.

Parameters:

y - The new y value [0, REFERENCE_Y] = [0, 100].

Returns:

The current XYZColor object.

setY

public XYZColor setY(int y)

Sets the y value. The input value will be constrained to the valid range of XYZ.

Parameters:

y - The new y value [0, REFERENCE_Y] = [0, 100].

Returns:

The current XYZColor object.

setZ

public XYZColor setZ(java.lang.Float z)

Sets the z value. The input value will be constrained to the valid range of XYZ.

Parameters:

z - The new z value [0, REFERENCE_Z] = [0, 108.883].

Returns:

The current XYZColor object.

setZ

public XYZColor setZ(int z)

Sets the z value. The input value will be constrained to the valid range of XYZ.

Parameters:

z - The new z value [0, REFERENCE_Z] = [0, 108.883].

Returns:

The current XYZColor object.

getX

public java.lang.Float getX()

Returns the current value of x of this color.

Returns:

The x of this color.

getY

public java.lang.Float getY()

Returns the current value of y of this color.

Returns:

The y of this color.

getZ

public java.lang.Float getZ()

Returns the current value of z of this color.

Returns:

The z of this color.

getHexString

public java.lang.String getHexString()

Description copied from interface: RColor

Returns a String representation of the current color using hexadecimal numbers. The range will be between "FFFFFFFF" and "00000000". Example:

 RGBColor rgb = new RGBColor(255, 0, 128, 0);
 rgb.getHexString(); // "00FF0080"
 

Specified by:

getHexString in interface RColor

Returns:

the color value of the object.

getOpColor

public int getOpColor()

Description copied from interface: RColor

Returns a int representation of the current color - but ignoring the alpha value. The output will always be opaque ('Op' in method name stands for Opaque). The range will be between 0xFFFFFFFF and 0xFF000000. Using this, the color object can be used to set the color within Processing. Example:

 HSBColor hsb = new HSBColor(244, 100, 100, 50);
 fill(hsb.getOpColor());
 

Specified by:

getOpColor in interface RColor

Returns:

the color value of the object.

getOpHexString

public java.lang.String getOpHexString()

Description copied from interface: RColor

Returns a String representation of the current color using hexadecimal numbers. The alpha value will be ignored ('Op' in method name stands for Opaque). The range will be between "FFFFFF" and "000000". Example:

 RGBColor rgb = new RGBColor(255, 0, 128, 0);
 rgb.getOpHexString(); // "FF0080"
 

Specified by:

getOpHexString in interface RColor

Returns:

the color value of the object.

getValues

public float[] getValues()

Description copied from interface: RColor

Returns the color values of the current object. Depending on the color space these are:
[0] = red [1] = green [2] = blue [3] = alpha
[0] = hue [1] = saturation [2] = brightness [3] = alpha
[0] = x [1] = y [2] = z [3] = alpha
[0] = L [1] = a [2] = b [3] = alpha
[0] = L [1] = C [2] = Hue [3] = alpha

Specified by:

getValues in interface RColor

Returns:

the colors.

getValuesNormalized

public float[] getValuesNormalized()

Description copied from interface: RColor

Returns the normalized color values of the current object. The ranges of all values will be between [0,1]. Depending on the color space the values are:
[0] = red [1] = green [2] = blue [3] = alpha
[0] = hue [1] = saturation [2] = brightness [3] = alpha
[0] = x [1] = y [2] = z [3] = alpha
[0] = L [1] = a [2] = b [3] = alpha
[0] = L [1] = C [2] = Hue [3] = alpha

Specified by:

getValuesNormalized in interface RColor

Returns:

the colors.

getName

public java.lang.String getName()

Description copied from interface: RColor

Returns the name of the color space e.g. "RGBColor"

Specified by:

getName in interface RColor

Returns:

The name of the color space.

getColorSpace

public ColorSpace getColorSpace()

Description copied from interface: RColor

Returns the color space of the color.

Specified by:

getColorSpace in interface RColor

Returns:

The color space.

copy

public XYZColor copy()

Description copied from interface: RColor

Creates a deep copy of the object.

Specified by:

copy in interface RColor

Returns:

The copied object.

equals

public boolean equals(RColor other)

Checks if the input color is equal to this object. Two colors are equal if they are member of the same color space and all channel values are equal.

Specified by:

equals in interface RColor

Parameters:

other - The other color

Returns:

True if both colors are considered the same;

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getMeanColor

public static XYZColor getMeanColor(RColor... colors)

Calculates the mean color of the input colors

Parameters:

colors - Colors (1 or more).

Returns:

The new XYZColor object that represents the mean color.

getMeanColor

public static XYZColor getMeanColor(java.util.ArrayList<RColor> colors)

Calculates the mean color of the input colors

Parameters:

colors - Colors.

Returns:

The new XYZColor object that represents the mean color.

getMeanColor

public static XYZColor getMeanColor(int start,
                                    int end,
                                    RColor... colors)

Calculates the mean color of the input colors. With start and end a subset is defined. Just this subset will be used to calculate the mean.

Parameters:

start - Start index of the subset of the input colors (start < end). start will be member of the subset.

end - End index of the subset of the input colors (start < end). end will not be member of the subset.

colors - Colors (1 or more).

Returns:

The new XYZColor object that represents the mean color.

getMeanColor

public static XYZColor getMeanColor(int start,
                                    int end,
                                    java.util.ArrayList<RColor> colors)

Calculates the mean color of the input colors. With start and end a subset is defined. Just this subset will be used to calculate the mean.

Parameters:

start - Start index of the subset of the input colors (start < end). start will be member of the subset.

end - End index of the subset of the input colors (start < end). end will not be member of the subset.

colors - Colors.

Returns:

The new XYZColor object that represents the mean color.

getLoss

public static java.lang.Float getLoss(RColor rvMean,
                                      RColor[] colors,
                                      ColorDifferenceMeasure m)

Calculates the loss - the mean distance of all members of colors to rvMean.

Parameters:

rvMean - A base color which will be used to calculate the distance to.

colors - Colors.

m - The measure which defines how the loss is calculated and which color model will be used. This should be an RGB color difference measure.

Returns:

The mean loss value.

getLoss

public static java.lang.Float getLoss(RColor rvMean,
                                      RColor[] colors,
                                      ColorDifferenceMeasure m,
                                      int start,
                                      int end)

Calculates the loss - the mean distance of all members of colors to rvMean. With start and end a subset is defined. Just this subset will be used to calculate the loss. start and end should be in the array range; otherwise this will produce an ArrayIndexOutOfBounds Exception.

Parameters:

rvMean - A base color which will be used to calculate the distance to.

colors - Colors.

m - The measure which defines how the loss is calculated and which color model will be used. This should be an RGB color difference measure.

start - Start index of the subset of the input colors (start < end). start will be member of the subset.

end - End index of the subset of the input colors (start < end). end will not be member of the subset.

Returns:

The mean loss value.

getLoss

public static java.lang.Float getLoss(RColor rvMean,
                                      java.util.ArrayList<RColor> lColors,
                                      ColorDifferenceMeasure m)

Calculates the loss - the mean distance of all members of colors to rvMean.

Parameters:

rvMean - A base color which will be used to calculate the distance to.

lColors - Colors.

m - The measure which defines how the loss is calculated and which color model will be used. This should be an RGB color difference measure.

Returns:

The mean loss value.

getLoss

public static java.lang.Float getLoss(RColor rvMean,
                                      java.util.ArrayList<RColor> lColors,
                                      ColorDifferenceMeasure m,
                                      int start,
                                      int end)

Calculates the loss - the mean distance of all members of colors to rvMean. With start and end a subset is defined. Just this subset will be used to calculate the loss. start and end should be in the array range; otherwise this will produce an ArrayIndexOutOfBounds Exception.

Parameters:

rvMean - A base color which will be used to calculate the distance to.

lColors - Colors.

m - The measure which defines how the loss is calculated and which color model will be used. This should be an RGB color difference measure.

start - Start index of the subset of the input colors (start < end). start will be member of the subset.

end - End index of the subset of the input colors (start < end). end will not be member of the subset.

Returns:

The mean loss value.

lerpColors

public static XYZColor lerpColors(RColor input1,
                                  RColor input2,
                                  float amt)

Lerps the two input colors and creates a new color. The values of the colors will be interpolated linear. The interpolation is defined by the amt parameter. For amt=0 the outcome will be input1, for amt=1 the outcome will be input2.

Parameters:

input1 - The first color.

input2 - The second color.

amt - The lerping value [0, 1].

Returns:

A new 'mixed' color.

getRandomXYZ

public static XYZColor getRandomXYZ()

Creates a new opaque XYZColor with random values.

Returns:

The new color.

toRGB

public RGBColor toRGB()

Description copied from interface: RColor

Returns a RGBColor representation of the current color. If the color is already a RGBColor, the original object will be return otherwise a new object will be created with converted color values. The resulting color referes to sRGB.

Specified by:

toRGB in interface RColor

Returns:

The RGBColor of the object.

toHSB

public HSBColor toHSB()

Description copied from interface: RColor

Returns a HSBColor representation of the current color. If the color is already a HSBColor, the original object will be return otherwise a new object will be created with converted color values.

Specified by:

toHSB in interface RColor

Returns:

The HSBColor of the object.

toXYZ

public XYZColor toXYZ()

Description copied from interface: RColor

Returns a XYZColor representation of the current color. If the color is already a XYZColor, the original object will be return otherwise a new object will be created with converted color values. The XYZColor refers to a D65/2° standard illuminant.

Specified by:

toXYZ in interface RColor

Returns:

The XYZColor of the object.

toLab

public LabColor toLab()

Description copied from interface: RColor

Returns a LabColor representation of the current color. If the color is already a LabColor, the original object will be return otherwise a new object will be created with converted color values. The conversion is done using the XYZColor.REFERENCE_X,Y and Z values as specific illuminants and observers.

Specified by:

toLab in interface RColor

Returns:

The LabColor of the object.

toLCH

public LCHColor toLCH()

Description copied from interface: RColor

Returns a LCHColor representation of the current color. If the color is already a LCHColor, the original object will be return otherwise a new object will be created with converted color values.

Specified by:

toLCH in interface RColor

Returns:

The LCHColor of the object.