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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » com.sun.media.jai.opimage 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


javax.media.jai.ColormapOpImage
   com.sun.media.jai.opimage.MultiplyConstOpImage

MultiplyConstOpImage
final class MultiplyConstOpImage extends ColormapOpImage (Code)
An OpImage implementing the "MultiplyConst" operation.

This OpImage multiplies a set of constants, one for each band of the source image, to the pixels of a rendered image. The destination pixel values are calculated as:

 for (int h = 0; h < dstHeight; h++) {
 for (int w = 0; w < dstWidth; w++) {
 for (int b = 0; b < dstNumBands; b++) {
 if (constants.length < dstNumBands) {
 dst[h][w][b] = srcs[h][w][b] * constants[0];
 } else {
 dst[h][w][b] = srcs[h][w][b] * constants[b];
 }
 }
 }
 }
 

See Also:   javax.media.jai.operator.MultiplyConstDescriptor
See Also:   MultiplyConstCRIF
since:
   EA2


Field Summary
protected  double[]constants
     The constants to be multiplied, one for each band.

Constructor Summary
public  MultiplyConstOpImage(RenderedImage source, Map config, ImageLayout layout, double[] constants)
     Constructor.

Method Summary
protected  voidcomputeRect(Raster[] sources, WritableRaster dest, Rectangle destRect)
     Multiplies a constant to the pixel values within a specified rectangle.
protected  voidtransformColormap(byte[][] colormap)
     Transform the colormap according to the rescaling parameters.

Field Detail
constants
protected double[] constants(Code)
The constants to be multiplied, one for each band.




Constructor Detail
MultiplyConstOpImage
public MultiplyConstOpImage(RenderedImage source, Map config, ImageLayout layout, double[] constants)(Code)
Constructor.
Parameters:
  source - The source image.
Parameters:
  layout - The destination image layout.
Parameters:
  constants - The constants to be multiplied, stored as reference.




Method Detail
computeRect
protected void computeRect(Raster[] sources, WritableRaster dest, Rectangle destRect)(Code)
Multiplies a constant to the pixel values within a specified rectangle.
Parameters:
  sources - Cobbled sources, guaranteed to provide all thesource data necessary for computing the rectangle.
Parameters:
  dest - The tile containing the rectangle to be computed.
Parameters:
  destRect - The rectangle within the tile to be computed.



transformColormap
protected void transformColormap(byte[][] colormap)(Code)
Transform the colormap according to the rescaling parameters.



Methods inherited from javax.media.jai.ColormapOpImage
final protected void initializeColormapOperation()(Code)(Java Doc)
final protected boolean isColormapOperation()(Code)(Java Doc)
abstract protected void transformColormap(byte[][] colormap)(Code)(Java Doc)

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