Package com.datalogics.PDFL

Class CalGrayColorSpace

java.lang.Object

com.datalogics.PDFL.ColorSpace

com.datalogics.PDFL.CalGrayColorSpace

public class CalGrayColorSpace
extends ColorSpace

A calibrated gray color space. A CalGray color space is a special case of a single-component CIE-based color space, known as a CIE-based A color space.

This type of space is the one-dimensional (and usually achromatic) analog of CIE-based ABC spaces.

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
CalGrayColorSpace(List<Double> whitePoint)	Create a CalGray color space.
CalGrayColorSpace(List<Double> whitePoint, List<Double> blackPoint, double gamma)	Create a CalGray 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.
double	getGamma()	A number G defining the gamma for the gray component.
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

CalGrayColorSpace

public CalGrayColorSpace(List<Double> whitePoint,
 List<Double> blackPoint,
 double gamma)

Create a CalGray 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.

gamma - A number G defining the gamma for the gray component. G must be positive and is generally greater than or equal to 1.

CalGrayColorSpace

public CalGrayColorSpace(List<Double> whitePoint)

Create a CalGray color space.

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

The gamma defaults to 1

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.

getGamma

public double getGamma()

A number G defining the gamma for the gray component. G must be positive and is generally greater than or equal to 1.