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

java.awt.image.LookupOp.filter()
Performs a lookup operation on a BufferedImage. If the color model in the source image is not the same as that in the destination image, the pixels will be converted in the destination. If the destination image is null, a BufferedImage will be created with an appropriate ColorModel. An IllegalArgumentException might be thrown if the number of arrays in the LookupTable does not meet the restrictions stated in the class comment above, or if the source image has an IndexColorModel. @param src the BufferedImage to be filtered @param dst the BufferedImage in which to store the results of the filter operation @return the filtered BufferedImage. @throws IllegalArgumentException if the number of arrays in theLookupTable does not meet the restrictions described in the class comments, or if the source image has an IndexColorModel.

        BufferedImage localBufferedImage = getImage(5069, 19);


        // filter(BI,BI) non-equal widths
        BufferedImage localBufferedImage1 = getImage(6, 19);
        try {
            localLookupOp.filter(localBufferedImage, localBufferedImage1);
            fail("IllegalArgumentException expected!");
        } catch (IllegalArgumentException e) {
            // expected
        }

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        }


        // filter(R,WR) non-equal widths


        try {
            localLookupOp.filter(localBufferedImage.getRaster(),
                    localBufferedImage1.getRaster());
            fail("IllegalArgumentException expected!");
        } catch (IllegalArgumentException e) {
            // expected
        }

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        // filter(BI,BI) non-equal heights


        localBufferedImage1 = getImage(5069, 5);
        try {
            localLookupOp.filter(localBufferedImage, localBufferedImage1);
            fail("IllegalArgumentException expected!");
        } catch (IllegalArgumentException e) {
            // expected
        }

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            // expected
        }


        // filter(R, WR) non-equal heights
        try {
            localLookupOp.filter(localBufferedImage.getRaster(),
                    localBufferedImage1.getRaster());
            fail("IllegalArgumentException expected!");
        } catch (IllegalArgumentException e) {
            // expected
        }

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    byte[] bytes = new byte[] {(byte) 0xAA, (byte) 0xBB};
    ByteLookupTable t = new ByteLookupTable(0, bytes);
    LookupOp op = new LookupOp(t, null);
    
    dest = op.filter(src, dest);
    harness.check(dest.getSample(0, 0, 0), 1);
    harness.check(dest.getSample(1, 0, 0), 2);
    harness.check(dest.getSample(2, 0, 0), 3);
    harness.check(dest.getSample(3, 0, 0), 4);
    harness.check(dest.getSample(4, 0, 0), 5);

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    WritableRaster dest = src.createCompatibleWritableRaster();
    
    byte[] bytes = new byte[] {(byte) 0xAA, (byte) 0xBB};
    ByteLookupTable t = new ByteLookupTable(0, bytes);
    LookupOp op = new LookupOp(t, null);
    dest = op.filter(src, dest);
    
    harness.check(dest.getSample(0, 0, 0), 0);
    harness.check(dest.getSample(1, 0, 0), 0);
    harness.check(dest.getSample(2, 0, 0), 0);
    harness.check(dest.getSample(3, 0, 0), 0);

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    byte[] bytes = new byte[] {(byte) 0xAA, (byte) 0xBB};
    ByteLookupTable t = new ByteLookupTable(0, bytes);
    LookupOp op = new LookupOp(t, null);
    
    dest = op.filter(src, dest);
    harness.check(dest.getSample(0, 0, 0), 1);
    harness.check(dest.getSample(1, 0, 0), 2);
    harness.check(dest.getSample(2, 0, 0), 3);
    harness.check(dest.getSample(3, 0, 0), 4);
    harness.check(dest.getSample(4, 0, 0), 5);

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    byte[] bytes = new byte[] {(byte) 0xAA, (byte) 0xBB};
    ByteLookupTable t = new ByteLookupTable(0, bytes);
    LookupOp op = new LookupOp(t, null);
    
    // Simple tests
    BufferedImage dst = op.filter(img, null);
    harness.check(dst.getType(), op.createCompatibleDestImage(img, null).getType());
    
    dst = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
    try
    {

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    harness.check(dst.getType(), op.createCompatibleDestImage(img, null).getType());
    
    dst = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
    try
    {
      dst = op.filter(img, dst);
      harness.check(true);
    }
    catch (IllegalArgumentException ex)
    {
      harness.check(false);

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    }
    
    // Src and dst images can be the same
    try
    {
      op.filter(img, img);
      harness.check(true);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);

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