Examples of java.awt.image.BandCombineOp.filter()

java.awt.image.BandCombineOp.filter()
Transforms the Raster using the matrix specified in the constructor. An IllegalArgumentException may be thrown if the number of bands in the source or destination is incompatible with the matrix. See the class comments for more details.
If the destination is null, it will be created with a number of bands equalling the number of rows in the matrix. No exception is thrown if the operation causes a data overflow. @param src The Raster to be filtered. @param dst The Raster in which to store the results of the filter operation. @return The filtered Raster. @throws IllegalArgumentException If the number of bands in the source or destination is incompatible with the matrix.

                matrix[4][1] = 1; // Alpha
                break;
            }
            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
            } catch (Throwable t) {
                t.printStackTrace();
            }
            return wr;
        }

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        // System.out.println("src: " + srcBI.getWidth() + "x" +
        //                    srcBI.getHeight());


        ColorConvertOp op = new ColorConvertOp(dstCM.getColorSpace(),
                                               null);
        dstBI = op.filter(srcBI, null);


        // System.out.println("After filter:");


        WritableRaster wr00 = wr.createWritableTranslatedChild(0,0);
        for (int i=0; i<dstCM.getColorSpace().getNumComponents(); i++)

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                break;
            }


            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
        } else {
            ColorModel dstCM = getColorModel();
            BufferedImage dstBI;


            if (!dstCM.hasAlpha()) {

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             * System.out.println("dst: " + dstBI.getWidth() + "x" +
             *                    dstBI.getHeight());
             */


            ColorConvertOp op = new ColorConvertOp(null);
            op.filter(srcBI, dstBI);


            if (dstCM.hasAlpha())
                copyBand(srcWr, srcSM.getNumBands()-1,
                         wr,    getSampleModel().getNumBands()-1);
        }

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    }


    // create the Raster used by the filter
    Raster sourceRaster = im.getRaster();


    WritableRaster destRaster = changeColoursOp.filter(sourceRaster, null);


    // convert the destination Raster into a BufferedImage
    BufferedImage newIm = new BufferedImage(im.getColorModel(),
                                          destRaster, false, null);

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                matrix[3][3] = 1; // Alpha
                break;
            }
            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
        } else {
            ColorModel dstCM = getColorModel();
            if (srcCM.getColorSpace() == dstCM.getColorSpace()) {
                // No transform needed, just reformat data...
                // System.out.println("Bypassing");

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            // System.out.println("src: " + srcBI.getWidth() + "x" + 
            //                    srcBI.getHeight());


            ColorConvertOp op = new ColorConvertOp(dstCM.getColorSpace(), 
                                                   null);
            dstBI = op.filter(srcBI, null);


            // System.out.println("After filter:");
            
            WritableRaster wr00 = wr.createWritableTranslatedChild(0,0);
            for (int i=0; i<dstCM.getColorSpace().getNumComponents(); i++)

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                break;
            }


            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
        } else {
            ColorModel dstCM = getColorModel();
            BufferedImage dstBI;


            if (!dstCM.hasAlpha()) {

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             * System.out.println("dst: " + dstBI.getWidth() + "x" + 
             *                    dstBI.getHeight());
             */


            ColorConvertOp op = new ColorConvertOp(null);
            op.filter(srcBI, dstBI);


            if (dstCM.hasAlpha())
                copyBand(srcWr, srcSM.getNumBands()-1,
                         wr,    getSampleModel().getNumBands()-1);
        }

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                matrix[0][0] = 1;
            }


            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
        } else {
            Raster         srcRas = src.getData(wr.getBounds());
            WritableRaster srcWr  = (WritableRaster)srcRas;


            // Divide out alpha if we have it.  We need to do this since

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