| java.lang.Object
 org.vfny.geoserver.wms.responses.palette.CustomPaletteBuilder
| CustomPaletteBuilder | | final public class CustomPaletteBuilder (Code) | | This class implements the octree quantization method as it is described in
the "Graphics Gems" (ISBN 0-12-286166-3, Chapter 4, pages 297-293)
author:
Simone Giannecchini - GeoSolutions |
| Inner Class :protected class ColorNode | |
| Method Summary | |
| public CustomPaletteBuilder | buildPalette()
| | public static boolean | canCreatePalette(ImageTypeSpecifier type)
Returns true if PaletteBuilder is able to create palette
for given image type.
Parameters:
type - an instance of ImageTypeSpecifier to beindexed. | | public static boolean | canCreatePalette(RenderedImage image)
Returns true if PaletteBuilder is able to create palette
for given rendered image.
Parameters:
image - an instance of RenderedImage to be indexed. | | protected int | findColorIndex(ColorNode aNode, int[] rgba, int transpBand)
| | public int | findNearestColorIndex(int[] rgba, int transparentBand)
| | protected int | findPaletteEntry(ColorNode aNode, int index, byte[] red, byte[] green, byte[] blue)
| | protected ColorNode | freeTree(ColorNode aNode)
| | protected int | getBranchIndex(int[] rgba, int aLevel)
| | public IndexColorModel | getIndexColorModel()
| | public RenderedImage | getIndexedImage()
| | protected ColorNode | insertNode(ColorNode aNode, int[] rgba, int aLevel)
| | protected void | reduceTree()
|
| DEFAULT_ALPHA_TH | | final public static int DEFAULT_ALPHA_TH(Code) | | Default value for the threshold to decide whether a pixel is opaque (>=)
or transparent (<). Default is 1 to try to preserve antialising
|
| alphaThreshold | | protected int alphaThreshold(Code) | | |
| currLevel | | protected int currLevel(Code) | | |
| currSize | | protected int currSize(Code) | | |
| maxLevel | | protected int maxLevel(Code) | | maximum of tree depth
|
| maxNodes | | protected int maxNodes(Code) | | |
| numBands | | protected int numBands(Code) | | |
| numNodes | | protected int numNodes(Code) | | |
| palette | | protected ColorNode[] palette(Code) | | |
| reduceList | | protected ColorNode[] reduceList(Code) | | |
| requiredSize | | protected int requiredSize(Code) | | |
| root | | protected ColorNode root(Code) | | |
| src | | protected RenderedImage src(Code) | | |
| subsampleX | | protected int subsampleX(Code) | | |
| subsampley | | protected int subsampley(Code) | | |
| transColor | | protected ColorNode transColor(Code) | | |
| transparency | | protected int transparency(Code) | | |
| CustomPaletteBuilder | | public CustomPaletteBuilder(RenderedImage src)(Code) | | |
| CustomPaletteBuilder | | public CustomPaletteBuilder(RenderedImage src, int size, int subsx, int subsy, int alpha_th)(Code) | | |
| canCreatePalette | | public static boolean canCreatePalette(ImageTypeSpecifier type)(Code) | | Returns true if PaletteBuilder is able to create palette
for given image type.
Parameters:
type - an instance of ImageTypeSpecifier to beindexed. true if the PaletteBuilder islikely to be able to create palette for this image type.
exception:
IllegalArgumentException - if type is null. |
| canCreatePalette | | public static boolean canCreatePalette(RenderedImage image)(Code) | | Returns true if PaletteBuilder is able to create palette
for given rendered image.
Parameters:
image - an instance of RenderedImage to be indexed. true if the PaletteBuilder islikely to be able to create palette for this image type.
exception:
IllegalArgumentException - if image is null. |
| findColorIndex | | protected int findColorIndex(ColorNode aNode, int[] rgba, int transpBand)(Code) | | |
| findNearestColorIndex | | public int findNearestColorIndex(int[] rgba, int transparentBand)(Code) | | |
| findPaletteEntry | | protected int findPaletteEntry(ColorNode aNode, int index, byte[] red, byte[] green, byte[] blue)(Code) | | |
| freeTree | | protected ColorNode freeTree(ColorNode aNode)(Code) | | |
| getBranchIndex | | protected int getBranchIndex(int[] rgba, int aLevel)(Code) | | |
| getIndexedImage | | public RenderedImage getIndexedImage()(Code) | | |
| insertNode | | protected ColorNode insertNode(ColorNode aNode, int[] rgba, int aLevel)(Code) | | |
| reduceTree | | protected void reduceTree()(Code) | | |
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