Package com.twelvemonkeys.image
Class InverseColorMapIndexColorModel
- java.lang.Object
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- java.awt.image.ColorModel
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- java.awt.image.IndexColorModel
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- com.twelvemonkeys.image.InverseColorMapIndexColorModel
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- All Implemented Interfaces:
java.awt.Transparency
public class InverseColorMapIndexColorModel extends java.awt.image.IndexColorModel
A faster implementation ofIndexColorModel
, that is backed by an inverse color-map, for fast look-ups.- Version:
- $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/image/InverseColorMapIndexColorModel.java#1 $
- Author:
- Harald Kuhr, $Author: haku $
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Field Summary
Fields Modifier and Type Field Description protected com.twelvemonkeys.image.InverseColorMap
inverseMap
protected int
mapSize
protected int[]
rgbs
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Constructor Summary
Constructors Constructor Description InverseColorMapIndexColorModel(int pNumBits, int pSize, byte[] pReds, byte[] pGreens, byte[] pBlues)
Creates anInverseColorMapIndexColorModel
from the given arrays of red, green, and blue components.InverseColorMapIndexColorModel(int pNumBits, int pSize, byte[] pReds, byte[] pGreens, byte[] pBlues, int pTransparentIndex)
Creates anInverseColorMapIndexColorModel
from the given arrays of red, green, and blue components, plus one transparent index.InverseColorMapIndexColorModel(int pNumBits, int pSize, int[] pRGBs, int pStart, boolean pAlpha, int pTransparentIndex, int pTransferType)
Creates anInverseColorMapIndexColorModel
from the given array of RGB components, plus one transparent index.InverseColorMapIndexColorModel(java.awt.image.IndexColorModel pColorModel)
Creates anInverseColorMapIndexColorModel
from an existingIndexColorModel
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static java.awt.image.IndexColorModel
create(java.awt.Image pImage, int pNumCols, int pFlags)
Creates anIndexColorModel
optimized for the givenImage
.java.lang.Object
getDataElements(int rgb, java.lang.Object pixel)
Returns a data element array representation of a pixel in this ColorModel, given an integer pixel representation in the default RGB color model.java.lang.String
toString()
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Methods inherited from class java.awt.image.IndexColorModel
convertToIntDiscrete, createCompatibleSampleModel, createCompatibleWritableRaster, equals, finalize, getAlpha, getAlphas, getBlue, getBlues, getComponents, getComponents, getComponentSize, getDataElement, getDataElements, getGreen, getGreens, getMapSize, getRed, getReds, getRGB, getRGBs, getTransparency, getTransparentPixel, getValidPixels, hashCode, isCompatibleRaster, isCompatibleSampleModel, isValid, isValid
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Methods inherited from class java.awt.image.ColorModel
coerceData, getAlpha, getAlphaRaster, getBlue, getColorSpace, getComponentSize, getDataElement, getDataElements, getGreen, getNormalizedComponents, getNormalizedComponents, getNumColorComponents, getNumComponents, getPixelSize, getRed, getRGB, getRGBdefault, getTransferType, getUnnormalizedComponents, hasAlpha, isAlphaPremultiplied
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Constructor Detail
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InverseColorMapIndexColorModel
public InverseColorMapIndexColorModel(java.awt.image.IndexColorModel pColorModel)
Creates anInverseColorMapIndexColorModel
from an existingIndexColorModel
.- Parameters:
pColorModel
- the color model to create from.- Throws:
java.lang.IllegalArgumentException
- ifpColorModel
isnull
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InverseColorMapIndexColorModel
public InverseColorMapIndexColorModel(int pNumBits, int pSize, int[] pRGBs, int pStart, boolean pAlpha, int pTransparentIndex, int pTransferType)
Creates anInverseColorMapIndexColorModel
from the given array of RGB components, plus one transparent index.- Parameters:
pNumBits
- the number of bits each pixel occupiespSize
- the size of the color component arrayspRGBs
- the array of packed RGB color componentspStart
- the starting offset of the first color componentpAlpha
- indicates whether alpha values are contained inpRGBs
pTransparentIndex
- the index of the transparent pixelpTransferType
- the data type of the array used to represent pixels- Throws:
java.lang.IllegalArgumentException
- if bits is less than 1 or greater than 16, or if size is less than 1- See Also:
IndexColorModel(int, int, int[], int, boolean, int, int)
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InverseColorMapIndexColorModel
public InverseColorMapIndexColorModel(int pNumBits, int pSize, byte[] pReds, byte[] pGreens, byte[] pBlues, int pTransparentIndex)
Creates anInverseColorMapIndexColorModel
from the given arrays of red, green, and blue components, plus one transparent index.- Parameters:
pNumBits
- the number of bits each pixel occupiespSize
- the size of the color component arrayspReds
- the array of red color componentspGreens
- the array of green color componentspBlues
- the array of blue color componentspTransparentIndex
- the index of the transparent pixel- Throws:
java.lang.IllegalArgumentException
- if bits is less than 1 or greater than 16, or if size is less than 1- See Also:
IndexColorModel(int, int, byte[], byte[], byte[], int)
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InverseColorMapIndexColorModel
public InverseColorMapIndexColorModel(int pNumBits, int pSize, byte[] pReds, byte[] pGreens, byte[] pBlues)
Creates anInverseColorMapIndexColorModel
from the given arrays of red, green, and blue components.- Parameters:
pNumBits
- the number of bits each pixel occupiespSize
- the size of the color component arrayspReds
- the array of red color componentspGreens
- the array of green color componentspBlues
- the array of blue color components- Throws:
java.lang.IllegalArgumentException
- if bits is less than 1 or greater than 16, or if size is less than 1- See Also:
IndexColorModel(int, int, byte[], byte[], byte[])
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Method Detail
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create
public static java.awt.image.IndexColorModel create(java.awt.Image pImage, int pNumCols, int pFlags)
Creates anIndexColorModel
optimized for the givenImage
.- Parameters:
pImage
- theImage
containing the RGB samplespNumCols
- the maximum number of colors in theIndexColorModel
pFlags
- flags- Returns:
- a new optimized
IndexColorModel
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getDataElements
public java.lang.Object getDataElements(int rgb, java.lang.Object pixel)
Returns a data element array representation of a pixel in this ColorModel, given an integer pixel representation in the default RGB color model. This array can then be passed to thesetDataElements
method of aWritableRaster
object. If the pixel variable isnull
, a new array is allocated. Ifpixel
is notnull
, it must be a primitive array of typetransferType
; otherwise, aClassCastException
is thrown. AnArrayIndexOutOfBoundsException
is thrown ifpixel
is not large enough to hold a pixel value for thisColorModel
. The pixel array is returned.Since
OpaqueIndexColorModel
can be subclassed, subclasses inherit the implementation of this method and if they don't override it then they throw an exception if they use an unsupportedtransferType
. #param rgb the integer pixel representation in the default RGB color model #param pixel the specified pixel #return an array representation of the specified pixel in thisOpaqueIndexColorModel
. #throws ClassCastException ifpixel
is not a primitive array of typetransferType
#throws ArrayIndexOutOfBoundsException ifpixel
is not large enough to hold a pixel value for thisColorModel
#throws UnsupportedOperationException iftransferType
is invalid- Overrides:
getDataElements
in classjava.awt.image.IndexColorModel
- See Also:
WritableRaster.setDataElements(int, int, java.lang.Object)
,SampleModel.setDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer)
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.awt.image.IndexColorModel
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