Examples of java.awt.image.ShortLookupTable.lookupPixel()

java.awt.image.ShortLookupTable.lookupPixel()
Returns an array of samples of a pixel, translated with the lookup table. The source and destination array can be the same array. Array dst is returned. @param src the source array. @param dst the destination array. This array must be at least as long as src. If dst is null, a new array will be allocated having the same length as src. @return the array dst, an int array of samples. @exception ArrayIndexOutOfBoundsException if src is longer than dst or if for any element i of src, (src[i]&0xffff)-offset is either less than zero or greater than or equal to the length of the lookup table for any band.

    short[] data = {105, 104, 103, 102, 101, 100};
    ShortLookupTable t = new ShortLookupTable(100, data);
    
    // check 1-band source with 1-band lookup table
    short[] src = new short[] {100};
    short[] dst = t.lookupPixel(src, null);
    harness.check(dst[0], 105);
    
    src = new short[] {101};
    dst = new short[] {0};
    dst = t.lookupPixel(src, dst);

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    short[] dst = t.lookupPixel(src, null);
    harness.check(dst[0], 105);
    
    src = new short[] {101};
    dst = new short[] {0};
    dst = t.lookupPixel(src, dst);
    harness.check(dst[0], 104);


    // check 3-band source with 1-band lookup table
    src = new short[] {100, 101, 102};
    try {

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    harness.check(dst[0], 104);


    // check 3-band source with 1-band lookup table
    src = new short[] {100, 101, 102};
    try {
        dst = t.lookupPixel(src, null);
        harness.check(dst[0], 105);
        harness.check(dst[1], 104);
        harness.check(dst[2], 103);
    }
    catch (Exception e) {      // don't allow a failure to

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      {115, 114, 113, 112, 111, 110},
      {125, 124, 123, 122, 121, 120}
    };
    ShortLookupTable t2 = new ShortLookupTable(100, data2);
    short[] src2 = {100, 101, 102};
    dst = t2.lookupPixel(src2, null);
    harness.check(dst[0], 105);
    harness.check(dst[1], 114);
    harness.check(dst[2], 123);
    
    src2 = new short[] {103, 104, 105};

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    harness.check(dst[1], 114);
    harness.check(dst[2], 123);
    
    src2 = new short[] {103, 104, 105};
    dst = new short[] {0, 0, 0};
    dst = t2.lookupPixel(src2, dst);
    harness.check(dst[0], 102);
    harness.check(dst[1], 111);
    harness.check(dst[2], 120);


    // check 1-band source with 2-band lookup table

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      {105, 104, 103, 102, 101, 100},
      {115, 114, 113, 112, 111, 110},
    };
    ShortLookupTable t3 = new ShortLookupTable(100, data3);
    src = new short[] {100};
    dst = t3.lookupPixel(src, null);
    harness.check(dst[0], 105);
    
    src = new short[] {101};
    dst = new short[1];
    dst = t3.lookupPixel(src, dst);

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    dst = t3.lookupPixel(src, null);
    harness.check(dst[0], 105);
    
    src = new short[] {101};
    dst = new short[1];
    dst = t3.lookupPixel(src, dst);
    harness.check(dst[0], 104);


    // check 3 band source, 2 band lookup table
    try {
        dst = t3.lookupPixel(src2, null);

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    dst = t3.lookupPixel(src, dst);
    harness.check(dst[0], 104);


    // check 3 band source, 2 band lookup table
    try {
        dst = t3.lookupPixel(src2, null);
        harness.check(false);
    }
    catch (ArrayIndexOutOfBoundsException e) {
        harness.check(true);
    }

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        harness.check(true);
    }
   
    dst = new short[3];
    try {
        dst = t3.lookupPixel(src2, dst);
        harness.check(false);
    }
    catch (ArrayIndexOutOfBoundsException e) {
        harness.check(true);
    }

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    ShortLookupTable t = new ShortLookupTable(100, data);
    
    try
    {
      int[] src = new int[] {120};
      t.lookupPixel(src, null);
      harness.check(false);
    }
    catch (ArrayIndexOutOfBoundsException ex)
    {
      harness.check(true);

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