Package com.datalogics.PDFL

Class LabColorSpace

java.lang.Object

com.datalogics.PDFL.ColorSpace

com.datalogics.PDFL.LabColorSpace

public class LabColorSpace
extends ColorSpace

A Lab color space is a CIE-based ABC color space with two transformation stages. In this type of space, A, B, and C represent the L*, a*, and b* components of a CIE 1976 L*a*b* space. The range of the first (L*) component is always 0 to 100; the ranges of the second and third (a* and b*) components are defined by the Range.

Field Summary

Fields inherited from class com.datalogics.PDFL.ColorSpace

DEVICE_CMYK, DEVICE_GRAY, DEVICE_RGB, DEVICE_RGBA, LAB, LAB_A

Constructor Summary

Constructors

Constructor	Description
LabColorSpace(List<Double> whitePoint)	Create a Lab color space.
LabColorSpace(List<Double> whitePoint, List<Double> blackPoint, List<Double> range)	Create a Lab color space.

Method Summary

Modifier and Type	Method	Description
void	delete()
List<Double>	getBlackPoint()	An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point.
List<Double>	getRange()	An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space.
List<Double>	getWhitePoint()	An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point.

Methods inherited from class com.datalogics.PDFL.ColorSpace

equals, getName, getNumComponents, getPDFObject, toString

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

LabColorSpace

public LabColorSpace(List<Double> whitePoint,
 List<Double> blackPoint,
 List<Double> range)

Create a Lab color space.

Parameters:

whitePoint - An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

blackPoint - An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point. All three of these numbers must be non-negative.

range - An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space.

LabColorSpace

public LabColorSpace(List<Double> whitePoint)

Create a Lab color space.

The blackPoint defaults to [0.0, 0.0, 0.0].

The range defaults to [-100 100 -100 100]

Parameters:

whitePoint - An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

Method Details

delete

public void delete()

Overrides:

delete in class ColorSpace

getWhitePoint

public List<Double> getWhitePoint()

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

getBlackPoint

public List<Double> getBlackPoint()

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point. All three of these numbers must be non-negative.

getRange

public List<Double> getRange()

An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space.