public class PDFDeviceCMYK
extends java.awt.color.ColorSpace
The cmyk->rgb conversion is trivial. rgb->cmyk, however, can be arbitrarily complex as custom black-generation and undercolor-removal functions can be specified in the graphics state.
The spec defines the rgb->cmyk conversion like this : UCR(x) = undercolor-removal function BG(x) = black-generation function k = min(1-red, 1-green, 1-blue) cyan = min(1, max(0, 1-red-UCR(k))) magenta = min(1, max(0, 1-green-UCR(k))) yellow = min(1, max(0, 1-blue-UCR(k))) black = min(1, max(0, BG(k)))
CS_CIEXYZ, CS_GRAY, CS_LINEAR_RGB, CS_PYCC, CS_sRGB, TYPE_2CLR, TYPE_3CLR, TYPE_4CLR, TYPE_5CLR, TYPE_6CLR, TYPE_7CLR, TYPE_8CLR, TYPE_9CLR, TYPE_ACLR, TYPE_BCLR, TYPE_CCLR, TYPE_CMY, TYPE_CMYK, TYPE_DCLR, TYPE_ECLR, TYPE_FCLR, TYPE_GRAY, TYPE_HLS, TYPE_HSV, TYPE_Lab, TYPE_Luv, TYPE_RGB, TYPE_XYZ, TYPE_YCbCr, TYPE_Yxy
Constructor and Description |
---|
PDFDeviceCMYK() |
PDFDeviceCMYK(int type,
int numcomponents) |
Modifier and Type | Method and Description |
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float[] |
fromCIEXYZ(float[] colorvalue) |
float[] |
fromRGB(float[] rgbvalue) |
float[] |
toCIEXYZ(float[] colorvalue) |
float[] |
toRGB(float[] colorvalue) |
public PDFDeviceCMYK()
public PDFDeviceCMYK(int type, int numcomponents)
public float[] toRGB(float[] colorvalue)
toRGB
in class java.awt.color.ColorSpace
public float[] fromRGB(float[] rgbvalue)
fromRGB
in class java.awt.color.ColorSpace
public float[] toCIEXYZ(float[] colorvalue)
toCIEXYZ
in class java.awt.color.ColorSpace
public float[] fromCIEXYZ(float[] colorvalue)
fromCIEXYZ
in class java.awt.color.ColorSpace