Examples of java.awt.image.BandedSampleModel

java.awt.image.BandedSampleModel
This class represents image data which is stored in a band interleaved fashion and for which each sample of a pixel occupies one data element of the DataBuffer. It subclasses ComponentSampleModel but provides a more efficent implementation for accessing band interleaved image data than is provided by ComponentSampleModel. This class should typically be used when working with images which store sample data for each band in a different bank of the DataBuffer. Accessor methods are provided so that image data can be manipulated directly. Pixel stride is the number of data array elements between two samples for the same band on the same scanline. The pixel stride for a BandedSampleModel is one. Scanline stride is the number of data array elements between a given sample and the corresponding sample in the same column of the next scanline. Band offsets denote the number of data array elements from the first data array element of the bank of the DataBuffer holding each band to the first sample of the band. The bands are numbered from 0 to N-1. Bank indices denote the correspondence between a bank of the data buffer and a band of image data. This class supports {@link DataBuffer#TYPE_BYTE TYPE_BYTE}, {@link DataBuffer#TYPE_USHORT TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT TYPE_SHORT}, {@link DataBuffer#TYPE_INT TYPE_INT}, {@link DataBuffer#TYPE_FLOAT TYPE_FLOAT}, and {@link DataBuffer#TYPE_DOUBLE TYPE_DOUBLE} datatypes

                                          int tileWidth,
                                          int tileHeight,
                                          int[] bankIndices,
                                          int[] bandOffsets) {
        SampleModel sm =
            new BandedSampleModel(dataType,
                                  tileWidth, tileHeight,
                                  tileWidth,
                                  bankIndices,
                                  bandOffsets);
        return new TiledImage(minX, minY, width, height,

View Full Code Here

  
  public void testConstructor1(TestHarness harness)
  {
    harness.checkPoint("(int, int, int, int)");
    
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_SHORT, 10, 20, 2);
    harness.check(m.getDataType(), DataBuffer.TYPE_SHORT);
    harness.check(m.getWidth(), 10);
    harness.check(m.getHeight(), 20);
    harness.check(m.getNumBands(), 2);
    harness.check(m.getNumDataElements(), 2);
    harness.check(m.getScanlineStride(), 10);
    harness.check(m.getPixelStride(), 1);
    int[] bankIndices = m.getBankIndices();
    harness.check(bankIndices[0], 0);
    harness.check(bankIndices[1], 1);
   
    // check bad type
    boolean pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_UNDEFINED, 10, 20, 2);
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }
    harness.check(pass);
    
    // check zero width 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 0, 20, 2);
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // check zero height 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 0, 2);
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // check zero bands 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 20, 0);
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }

View Full Code Here


  public void testConstructor2(TestHarness harness)
  {
    harness.checkPoint("(int, int, int, int, int[], int[])");
    
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_SHORT, 10, 20, 10, new int[] {3, 2, 1}, new int[] {0, 0, 0});
    harness.check(m.getDataType(), DataBuffer.TYPE_SHORT);
    harness.check(m.getWidth(), 10);
    harness.check(m.getHeight(), 20);
    harness.check(m.getScanlineStride(), 10);
    harness.check(m.getPixelStride(), 1);
    harness.check(m.getNumBands(), 3);
    harness.check(m.getBankIndices()[0], 3);
    harness.check(m.getBankIndices()[1], 2);
    harness.check(m.getBankIndices()[2], 1);
    harness.check(m.getBandOffsets()[0], 0);
    harness.check(m.getBandOffsets()[1], 0);
    harness.check(m.getBandOffsets()[2], 0);
    
    // check bad type
    boolean pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_UNDEFINED, 10, 20, 10, new int[] {3, 2, 1}, new int[] {0, 0, 0});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // check zero width 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 0, 20, 10, new int[] {3, 2, 1}, new int[] {0, 0, 0});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // check zero height 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 0, 10, new int[] {3, 2, 1}, new int[] {0, 0, 0});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }
    harness.check(pass);
        
    // check null indices 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 20, 10, null, new int[] {0, 0, 0});
    }
    catch (NullPointerException e)
    {
      pass = true;   
    }
    harness.check(pass);
    
    // check null offsets 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 20, 10, new int[] {3, 2, 1}, null);
    }
    catch (NullPointerException e)
    {
      pass = true;   
    }
    harness.check(pass);
    
    // check number of bands (inferred from array lengths) conflicting 
    pass = false;
    try
    {
      m = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 20, 0, new int[] {2, 1}, new int[] {0, 0, 0});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;   
    }

View Full Code Here

   * 
   * @param harness  the test harness (<code>null</code> not permitted). 
   */
  public void test(TestHarness harness)        
  {
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    b.setElem(0, 0, 0xA0);
    b.setElem(0, 1, 0xA1);
    b.setElem(0, 2, 0xA2);
    b.setElem(0, 3, 0xA3);
    b.setElem(0, 4, 0xA4);
    b.setElem(0, 5, 0xA5);
    b.setElem(1, 0, 0xB0);
    b.setElem(1, 1, 0xB1);
    b.setElem(1, 2, 0xB2);
    b.setElem(1, 3, 0xB3);
    b.setElem(1, 4, 0xB4);
    b.setElem(1, 5, 0xB5);
    harness.check(m.getSample(0, 0, 0, b), 0xA0);
    harness.check(m.getSample(1, 0, 0, b), 0xA1);
    harness.check(m.getSample(0, 1, 0, b), 0xA2);
    harness.check(m.getSample(1, 1, 0, b), 0xA3);
    harness.check(m.getSample(0, 2, 0, b), 0xA4);
    harness.check(m.getSample(1, 2, 0, b), 0xA5);
    harness.check(m.getSample(0, 0, 1, b), 0xB0);
    harness.check(m.getSample(1, 0, 1, b), 0xB1);
    harness.check(m.getSample(0, 1, 1, b), 0xB2);
    harness.check(m.getSample(1, 1, 1, b), 0xB3);
    harness.check(m.getSample(0, 2, 1, b), 0xB4);
    harness.check(m.getSample(1, 2, 1, b), 0xB5);
    
    // try negative x
    boolean pass = false;
    try
    {
      /* int sample = */ m.getSample(-1, 0, 0, b);   
    }
    catch (ArrayIndexOutOfBoundsException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // try negative y
    pass = false;
    try
    {
      /* int sample = */ m.getSample(0, -1, 0, b);   
    }
    catch (ArrayIndexOutOfBoundsException e)
    {
      pass = true;   
    }
    harness.check(pass);
  
    // try negative band
    pass = false;
    try
    {
      /* int sample = */ m.getSample(0, 0, -1, b);   
    }
    catch (ArrayIndexOutOfBoundsException e)
    {
      pass = true;   
    }
    harness.check(pass);
    
    // try null buffer
    pass = false;
    try 
    {
        /* int sample = */ m.getSample(0, 0, 0, null);   
    }
    catch (NullPointerException e)
    {
      pass = true;   
    }

View Full Code Here

   * 
   * @param harness  the test harness (<code>null</code> not permitted). 
   */
  public void test(TestHarness harness)        
  {
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    b.setElem(0, 0, 0xA0);
    b.setElem(0, 1, 0xA1);
    b.setElem(0, 2, 0xA2);
    b.setElem(0, 3, 0xA3);
    b.setElem(0, 4, 0xA4);
    b.setElem(0, 5, 0xA5);
    b.setElem(1, 0, 0xB0);
    b.setElem(1, 1, 0xB1);
    b.setElem(1, 2, 0xB2);
    b.setElem(1, 3, 0xB3);
    b.setElem(1, 4, 0xB4);
    b.setElem(1, 5, 0xB5);
    harness.check(m.getPixel(0, 0, (int[]) null, b)[0], 0xA0);
    harness.check(m.getPixel(1, 0, (int[]) null, b)[0], 0xA1);
    harness.check(m.getPixel(0, 1, (int[]) null, b)[0], 0xA2);
    harness.check(m.getPixel(1, 1, (int[]) null, b)[0], 0xA3);
    harness.check(m.getPixel(0, 2, (int[]) null, b)[0], 0xA4);
    harness.check(m.getPixel(1, 2, (int[]) null, b)[0], 0xA5);
    harness.check(m.getPixel(0, 0, (int[]) null, b)[1], 0xB0);
    harness.check(m.getPixel(1, 0, (int[]) null, b)[1], 0xB1);
    harness.check(m.getPixel(0, 1, (int[]) null, b)[1], 0xB2);
    harness.check(m.getPixel(1, 1, (int[]) null, b)[1], 0xB3);
    harness.check(m.getPixel(0, 2, (int[]) null, b)[1], 0xB4);
    harness.check(m.getPixel(1, 2, (int[]) null, b)[1], 0xB5);
 
    // try negative x
    boolean pass = false;
    try
    {
      /* int[] pixel = */ m.getPixel(-1, 0, (int[]) null, b);   
    }
    catch (ArrayIndexOutOfBoundsException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // try negative y
    pass = false;
    try
    {
      /* int[] pixel = */ m.getPixel(0, -1, (int[]) null, b);   
    }
    catch (ArrayIndexOutOfBoundsException e)
    {
      pass = true;   
    }
    harness.check(pass);


    // try pixel array too small
    pass = false;
    try 
    {
      /* int[] pixel = */ m.getPixel(0, 0, new int[1], b);   
    }
    catch (ArrayIndexOutOfBoundsException e)
    {
      pass = true;   
    }
    harness.check(pass);
    
    // try null buffer
    pass = false;
    try 
    {
      /* int[] pixel = */ m.getPixel(0, 0, (int[]) null, null);   
    }
    catch (NullPointerException e)
    {
      pass = true;   
    }

View Full Code Here

   * @param harness  the test harness (<code>null</code> not permitted). 
   */
  public void test(TestHarness harness)        
  {
    harness.checkPoint("(int, int, int, int, DataBuffer)");
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    m.setDataElements(0, 0, new int[] {0xA0, 0xB0}, b);
    m.setDataElements(1, 0, new int[] {0xA1, 0xB1}, b);
    m.setDataElements(0, 1, new int[] {0xA2, 0xB2}, b);
    m.setDataElements(1, 1, new int[] {0xA3, 0xB3}, b);
    m.setDataElements(0, 2, new int[] {0xA4, 0xB4}, b);
    m.setDataElements(1, 2, new int[] {0xA5, 0xB5}, b);
    harness.check(b.getElem(0, 0), 0xA0);
    harness.check(b.getElem(0, 1), 0xA1);
    harness.check(b.getElem(0, 2), 0xA2);
    harness.check(b.getElem(0, 3), 0xA3);
    harness.check(b.getElem(0, 4), 0xA4);
    harness.check(b.getElem(0, 5), 0xA5);
    harness.check(b.getElem(1, 0), 0xB0);
    harness.check(b.getElem(1, 1), 0xB1);
    harness.check(b.getElem(1, 2), 0xB2);
    harness.check(b.getElem(1, 3), 0xB3);
    harness.check(b.getElem(1, 4), 0xB4);
    harness.check(b.getElem(1, 5), 0xB5) ;
 
    // check negative x
    boolean pass = false;
    try
    {
      m.setDataElements(-1, 0, new int[] {0xA0, 0xB0}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check negative y
    pass = false;
    try
    {
      m.setDataElements(0, -1, new int[] {0xA0, 0xB0}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check elements too short
    pass = false;
    try
    {
      m.setDataElements(0, 1, new int[] {0xA0}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null elements
    pass = false;
    try
    {
      m.setDataElements(0, 1, null, b);
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null buffer
    pass = false;
    try
    {
      m.setDataElements(0, 0, new int[] {0xA0, 0xB0}, null);   
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }

View Full Code Here

   * 
   * @param harness  the test harness (<code>null</code> not permitted). 
   */
  public void test(TestHarness harness)        
  {
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    m.setPixels(0, 0, 1, 3, new int[] {0xA0, 0xB0, 0xA2, 0xB2, 0xA4, 0xB4}, b);
    m.setPixels(1, 0, 1, 3, new int[] {0xA1, 0xB1, 0xA3, 0xB3, 0xA5, 0xB5}, b);
    harness.check(b.getElem(0, 0), 0xA0);
    harness.check(b.getElem(0, 1), 0xA1);
    harness.check(b.getElem(0, 2), 0xA2);
    harness.check(b.getElem(0, 3), 0xA3);
    harness.check(b.getElem(0, 4), 0xA4);
    harness.check(b.getElem(0, 5), 0xA5);
    harness.check(b.getElem(1, 0), 0xB0);
    harness.check(b.getElem(1, 1), 0xB1);
    harness.check(b.getElem(1, 2), 0xB2);
    harness.check(b.getElem(1, 3), 0xB3);
    harness.check(b.getElem(1, 4), 0xB4);
    harness.check(b.getElem(1, 5), 0xB5);


    // check negative x
    boolean pass = false;
    try
    {
     m.setPixels(-1, 0, 1, 3, new int[] {0xA0, 0xB0, 0xA2, 0xB2, 0xA4, 0xB4}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check negative y
    pass = false;
    try
    {
      m.setPixels(0, -1, 1, 3, new int[] {0xA0, 0xB0, 0xA2, 0xB2, 0xA4, 0xB4}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check pixel array too short
    pass = false;
    try
    {
      m.setPixels(0, 0, 1, 3, new int[] {0xA0, 0xB0, 0xA2, 0xB2, 0xA4,/*0xB4*/}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null pixel array
    pass = false;
    try
    {
      m.setPixels(0, 0, 1, 3, (int[]) null, b);
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null buffer
    pass = false;
    try
    {
      m.setPixels(0, 0, 1, 3, new int[] {0xA0, 0xB0, 0xA2, 0xB2, 0xA4, 0xB4}, null);
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }

View Full Code Here

   * 
   * @param harness  the test harness (<code>null</code> not permitted). 
   */
  public void test(TestHarness harness)        
  {
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    m.setSamples(0, 0, 1, 3, 0, new int[] {0xA0, 0xA2, 0xA4}, b);
    m.setSamples(1, 0, 1, 1, 0, new int[] {0xA1}, b);
    m.setSamples(1, 1, 1, 2, 0, new int[] {0xA3, 0xA5}, b);
    m.setSamples(0, 0, 1, 3, 1, new int[] {0xB0, 0xB2, 0xB4}, b);
    m.setSamples(1, 0, 1, 3, 1, new int[] {0xB1, 0xB3, 0xB5}, b);
    harness.check(b.getElem(0, 0), 0xA0);  // check 1
    harness.check(b.getElem(0, 1), 0xA1);  // check 2
    harness.check(b.getElem(0, 2), 0xA2);  // check 3
    harness.check(b.getElem(0, 3), 0xA3);  // check 4
    harness.check(b.getElem(0, 4), 0xA4);  // check 5
    harness.check(b.getElem(0, 5), 0xA5);  // check 6
    harness.check(b.getElem(1, 0), 0xB0);  // check 7
    harness.check(b.getElem(1, 1), 0xB1);  // check 8
    harness.check(b.getElem(1, 2), 0xB2);  // check 9
    harness.check(b.getElem(1, 3), 0xB3);  // check 10
    harness.check(b.getElem(1, 4), 0xB4);  // check 11
    harness.check(b.getElem(1, 5), 0xB5);  // check 12


    // check negative x
    boolean pass = false;
    try
    {
      m.setSamples(-1, 0, 0, 3, 0, new int[] {0xA0, 0xA2, 0xA4}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);                   // check 13


    // check negative y
    pass = false;
    try
    {
      m.setSamples(0, -1, 0, 3, 0, new int[] {0xA0, 0xA2, 0xA4}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);                   // check 14


    // check negative band
    pass = false;
    try
    {
      m.setSamples(0, 0, 1, 3, -1, new int[] {0xA0, 0xA2, 0xA4}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check sample array too short
    pass = false;
    try
    {
      m.setSamples(0, 0, 1, 3, -1, new int[] {0xA0, 0xA2, /*0xA4*/}, b);
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null sample array
    pass = false;
    try
    {
      m.setSamples(0, 0, 1, 3, 0, (int[]) null, b);
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null buffer
    pass = false;
    try
    {
      m.setSamples(0, 0, 1, 3, 0, new int[] {0xA0, 0xA2, 0xA4}, null);
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }

View Full Code Here

  }


  public void testInt(TestHarness harness)        
  {
    harness.checkPoint("(int, int, int, int, DataBuffer)");
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    m.setSample(0, 0, 0, 0xA0, b);
    m.setSample(1, 0, 0, 0xA1, b);
    m.setSample(0, 1, 0, 0xA2, b);
    m.setSample(1, 1, 0, 0xA3, b);
    m.setSample(0, 2, 0, 0xA4, b);
    m.setSample(1, 2, 0, 0xA5, b);
    m.setSample(0, 0, 1, 0xB0, b);
    m.setSample(1, 0, 1, 0xB1, b);
    m.setSample(0, 1, 1, 0xB2, b);
    m.setSample(1, 1, 1, 0xB3, b);
    m.setSample(0, 2, 1, 0xB4, b);
    m.setSample(1, 2, 1, 0xB5, b);
    harness.check(b.getElem(0, 0), 0xA0);
    harness.check(b.getElem(0, 1), 0xA1);
    harness.check(b.getElem(0, 2), 0xA2);
    harness.check(b.getElem(0, 3), 0xA3);
    harness.check(b.getElem(0, 4), 0xA4);
    harness.check(b.getElem(0, 5), 0xA5);
    harness.check(b.getElem(1, 0), 0xB0);
    harness.check(b.getElem(1, 1), 0xB1);
    harness.check(b.getElem(1, 2), 0xB2);
    harness.check(b.getElem(1, 3), 0xB3);
    harness.check(b.getElem(1, 4), 0xB4);
    harness.check(b.getElem(1, 5), 0xB5);
    
    // check negative x
    boolean pass = false;
    try
    {
      m.setSample(-1, 0, 0, 0xFF, b);   
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check negative y
    pass = false;
    try
    {
      m.setSample(0, -1, 0, 0xFF, b);   
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);
  
    // check negative band
    pass = false;
    try
    {
      m.setSample(0, 0, -1, 0xFF, b);   
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null buffer
    pass = false;
    try
    {
      m.setSample(0, 0, 0, 0xFF, null);   
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }

View Full Code Here

  }


  public void testFloat(TestHarness harness)        
  {
    harness.checkPoint("(int, int, int, float, DataBuffer)");
    BandedSampleModel m = new BandedSampleModel(DataBuffer.TYPE_INT, 2, 3, 2);
    DataBufferInt b = new DataBufferInt(6, 2);
    m.setSample(0, 0, 0, (float) 0xA0, b);
    m.setSample(1, 0, 0, (float) 0xA1, b);
    m.setSample(0, 1, 0, (float) 0xA2, b);
    m.setSample(1, 1, 0, (float) 0xA3, b);
    m.setSample(0, 2, 0, (float) 0xA4, b);
    m.setSample(1, 2, 0, (float) 0xA5, b);
    m.setSample(0, 0, 1, (float) 0xB0, b);
    m.setSample(1, 0, 1, (float) 0xB1, b);
    m.setSample(0, 1, 1, (float) 0xB2, b);
    m.setSample(1, 1, 1, (float) 0xB3, b);
    m.setSample(0, 2, 1, (float) 0xB4, b);
    m.setSample(1, 2, 1, (float) 0xB5, b);
    harness.check(b.getElem(0, 0), 0xA0);
    harness.check(b.getElem(0, 1), 0xA1);
    harness.check(b.getElem(0, 2), 0xA2);
    harness.check(b.getElem(0, 3), 0xA3);
    harness.check(b.getElem(0, 4), 0xA4);
    harness.check(b.getElem(0, 5), 0xA5);
    harness.check(b.getElem(1, 0), 0xB0);
    harness.check(b.getElem(1, 1), 0xB1);
    harness.check(b.getElem(1, 2), 0xB2);
    harness.check(b.getElem(1, 3), 0xB3);
    harness.check(b.getElem(1, 4), 0xB4);
    harness.check(b.getElem(1, 5), 0xB5);
    
    // check negative x
    boolean pass = false;
    try
    {
      m.setSample(-1, 0, 0, (float) 0xFF, b);   
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check negative y
    pass = false;
    try
    {
      m.setSample(0, -1, 0, (float) 0xFF, b);   
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);
  
    // check negative band
    pass = false;
    try
    {
      m.setSample(0, 0, -1, (float) 0xFF, b);   
    }
    catch (ArrayIndexOutOfBoundsException e) 
    {
      pass = true;   
    }
    harness.check(pass);


    // check null buffer
    pass = false;
    try
    {
      m.setSample(0, 0, 0, (float) 0xFF, null);   
    }
    catch (NullPointerException e) 
    {
      pass = true;   
    }

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