Package mgui.interfaces.shapes.util

Class GridSampleModel

java.lang.Object
java.awt.image.SampleModel
java.awt.image.ComponentSampleModel
mgui.interfaces.shapes.util.GridSampleModel
public final class GridSampleModel
extends java.awt.image.ComponentSampleModel
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 TYPE_BYTE, TYPE_USHORT, TYPE_SHORT, TYPE_INT, TYPE_FLOAT, and TYPE_DOUBLE datatypes

  • Field Summary

    Fields
    Modifier and Type Field Description
    boolean apply_mask  
    boolean[][][] mask
    added Andrew Reid 211008
    int z  

    Fields inherited from class java.awt.image.ComponentSampleModel

    bandOffsets, bankIndices, numBands, numBanks, pixelStride, scanlineStride

    Fields inherited from class java.awt.image.SampleModel

    dataType, height, width

  • Constructor Summary

    Constructors
    Constructor Description
    GridSampleModel​(int dataType, int w, int h, int numBands)
    Constructs a BandedSampleModel with the specified parameters.
    GridSampleModel​(int dataType, int w, int h, int scanlineStride, int[] bankIndices, int[] bandOffsets)
    Constructs a BandedSampleModel with the specified parameters.

  • Method Summary

    Modifier and Type Method Description
    java.awt.image.SampleModel createCompatibleSampleModel​(int w, int h)
    Creates a new BandedSampleModel with the specified width and height.
    java.awt.image.DataBuffer createDataBuffer()
    Creates a DataBuffer that corresponds to this BandedSampleModel, The DataBuffer's data type, number of banks, and size will be consistent with this BandedSampleModel.
    java.awt.image.SampleModel createSubsetSampleModel​(int[] bands)
    Creates a new BandedSampleModel with a subset of the bands of this BandedSampleModel.
    java.lang.Object getDataElements​(int x, int y, java.lang.Object obj, java.awt.image.DataBuffer data)
    Returns data for a single pixel in a primitive array of type TransferType.
    int[] getPixel​(int x, int y, int[] iArray, java.awt.image.DataBuffer data)
    Returns all samples for the specified pixel in an int array.
    int[] getPixels​(int x, int y, int w, int h, int[] iArray, java.awt.image.DataBuffer data)
    Returns all samples for the specified rectangle of pixels in an int array, one sample per data array element.
    int getSample​(int x, int y, int b, java.awt.image.DataBuffer data)
    Returns as int the sample in a specified band for the pixel located at (x,y).
    double getSampleDouble​(int x, int y, int b, java.awt.image.DataBuffer data)
    Returns the sample in a specified band for a pixel located at (x,y) as a double.
    float getSampleFloat​(int x, int y, int b, java.awt.image.DataBuffer data)
    Returns the sample in a specified band for the pixel located at (x,y) as a float.
    int[] getSamples​(int x, int y, int w, int h, int b, int[] iArray, java.awt.image.DataBuffer data)
    Returns the samples in a specified band for the specified rectangle of pixels in an int array, one sample per data array element.
    int hashCode()  
    protected boolean is_masked​(int x, int y)
    added Andrew Reid
    void setDataElements​(int x, int y, java.lang.Object obj, java.awt.image.DataBuffer data)
    Sets the data for a single pixel in the specified DataBuffer from a primitive array of type TransferType.
    void setPixel​(int x, int y, int[] iArray, java.awt.image.DataBuffer data)
    Sets a pixel in the DataBuffer using an int array of samples for input.
    void setPixels​(int x, int y, int w, int h, int[] iArray, java.awt.image.DataBuffer data)
    Sets all samples for a rectangle of pixels from an int array containing one sample per array element.
    void setSample​(int x, int y, int b, double s, java.awt.image.DataBuffer data)
    Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a double for input.
    void setSample​(int x, int y, int b, float s, java.awt.image.DataBuffer data)
    Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a float for input.
    void setSample​(int x, int y, int b, int s, java.awt.image.DataBuffer data)
    Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using an int for input.
    void setSamples​(int x, int y, int w, int h, int b, int[] iArray, java.awt.image.DataBuffer data)
    Sets the samples in the specified band for the specified rectangle of pixels from an int array containing one sample per data array element.
    void setZ​(int z)  

    Methods inherited from class java.awt.image.ComponentSampleModel

    equals, getBandOffsets, getBankIndices, getNumDataElements, getOffset, getOffset, getPixelStride, getSampleSize, getSampleSize, getScanlineStride

    Methods inherited from class java.awt.image.SampleModel

    getDataElements, getDataType, getHeight, getNumBands, getPixel, getPixel, getPixels, getPixels, getSamples, getSamples, getTransferType, getWidth, setDataElements, setPixel, setPixel, setPixels, setPixels, setSamples, setSamples

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • mask

      public boolean[][][] mask
      added Andrew Reid 211008

    • apply_mask

      public boolean apply_mask

    • z

      public int z

  • Constructor Details

    • GridSampleModel

      public GridSampleModel​(int dataType, int w, int h, int numBands)
      Constructs a BandedSampleModel with the specified parameters. The pixel stride will be one data element. The scanline stride will be the same as the width. Each band will be stored in a separate bank and all band offsets will be zero.
      Parameters:
      dataType - The data type for storing samples.
      w - The width (in pixels) of the region of image data described.
      h - The height (in pixels) of the region of image data described.
      numBands - The number of bands for the image data.
      Throws:
      java.lang.IllegalArgumentException - if dataType is not one of the supported data types

    • GridSampleModel

      public GridSampleModel​(int dataType, int w, int h, int scanlineStride, int[] bankIndices, int[] bandOffsets)
      Constructs a BandedSampleModel with the specified parameters. The number of bands will be inferred from the lengths of the bandOffsets bankIndices arrays, which must be equal. The pixel stride will be one data element.
      Parameters:
      dataType - The data type for storing samples.
      w - The width (in pixels) of the region of image data described.
      h - The height (in pixels) of the region of image data described.
      scanlineStride - The line stride of the of the image data.
      bankIndices - The bank index for each band.
      bandOffsets - The band offset for each band.
      Throws:
      java.lang.IllegalArgumentException - if dataType is not one of the supported data types

  • Method Details

    • is_masked

      protected boolean is_masked​(int x, int y)
      added Andrew Reid

    • setZ

      public void setZ​(int z)

    • createCompatibleSampleModel

      public java.awt.image.SampleModel createCompatibleSampleModel​(int w, int h)
      Creates a new BandedSampleModel with the specified width and height. The new BandedSampleModel will have the same number of bands, storage data type, and bank indices as this BandedSampleModel. The band offsets will be compressed such that the offset between bands will be w*pixelStride and the minimum of all of the band offsets is zero.
      Overrides:
      createCompatibleSampleModel in class java.awt.image.ComponentSampleModel
      Parameters:
      w - the width of the resulting BandedSampleModel
      h - the height of the resulting BandedSampleModel
      Returns:
      a new BandedSampleModel with the specified width and height.
      Throws:
      java.lang.IllegalArgumentException - if w or h equals either Integer.MAX_VALUE or Integer.MIN_VALUE
      java.lang.IllegalArgumentException - if dataType is not one of the supported data types

    • createSubsetSampleModel

      public java.awt.image.SampleModel createSubsetSampleModel​(int[] bands)
      Creates a new BandedSampleModel with a subset of the bands of this BandedSampleModel. The new BandedSampleModel can be used with any DataBuffer that the existing BandedSampleModel can be used with. The new BandedSampleModel/DataBuffer combination will represent an image with a subset of the bands of the original BandedSampleModel/DataBuffer combination.
      Overrides:
      createSubsetSampleModel in class java.awt.image.ComponentSampleModel
      Throws:
      java.awt.image.RasterFormatException - if the number of bands is greater than the number of banks in this sample model.
      java.lang.IllegalArgumentException - if dataType is not one of the supported data types

    • createDataBuffer

      public java.awt.image.DataBuffer createDataBuffer()
      Creates a DataBuffer that corresponds to this BandedSampleModel, The DataBuffer's data type, number of banks, and size will be consistent with this BandedSampleModel.
      Overrides:
      createDataBuffer in class java.awt.image.ComponentSampleModel
      Throws:
      java.lang.IllegalArgumentException - if dataType is not one of the supported types.

    • getDataElements

      public java.lang.Object getDataElements​(int x, int y, java.lang.Object obj, java.awt.image.DataBuffer data)
      Returns data for a single pixel in a primitive array of type TransferType. For a BandedSampleModel, this will be the same as the data type, and samples will be returned one per array element. Generally, obj should be passed in as null, so that the Object will be created automatically and will be of the right primitive data type.

      The following code illustrates transferring data for one pixel from DataBuffer db1, whose storage layout is described by BandedSampleModel bsm1, to DataBuffer db2, whose storage layout is described by BandedSampleModel bsm2. The transfer will generally be more efficient than using getPixel/setPixel. 

                   BandedSampleModel bsm1, bsm2;
             DataBufferInt db1, db2;
             bsm2.setDataElements(x, y, bsm1.getDataElements(x, y, null, db1),
                            db2);
      Using getDataElements/setDataElements to transfer between two DataBuffer/SampleModel pairs is legitimate if the SampleModels have the same number of bands, corresponding bands have the same number of bits per sample, and the TransferTypes are the same.

      If obj is non-null, it should be a primitive array of type TransferType. Otherwise, a ClassCastException is thrown. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds, or if obj is non-null and is not large enough to hold the pixel data.

      Overrides:
      getDataElements in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      obj - If non-null, a primitive array in which to return the pixel data.
      data - The DataBuffer containing the image data.
      Returns:
      the data for the specified pixel.
      See Also:
      setDataElements(int, int, Object, DataBuffer)

    • getPixel

      public int[] getPixel​(int x, int y, int[] iArray, java.awt.image.DataBuffer data)
      Returns all samples for the specified pixel in an int array. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      getPixel in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      iArray - If non-null, returns the samples in this array
      data - The DataBuffer containing the image data
      Returns:
      the samples for the specified pixel.
      See Also:
      setPixel(int, int, int[], DataBuffer)

    • getPixels

      public int[] getPixels​(int x, int y, int w, int h, int[] iArray, java.awt.image.DataBuffer data)
      Returns all samples for the specified rectangle of pixels in an int array, one sample per data array element. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      getPixels in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the upper left pixel location
      y - The Y coordinate of the upper left pixel location
      w - The width of the pixel rectangle
      h - The height of the pixel rectangle
      iArray - If non-null, returns the samples in this array
      data - The DataBuffer containing the image data
      Returns:
      the samples for the pixels within the specified region.
      See Also:
      setPixels(int, int, int, int, int[], DataBuffer)

    • getSample

      public int getSample​(int x, int y, int b, java.awt.image.DataBuffer data)
      Returns as int the sample in a specified band for the pixel located at (x,y). ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      getSample in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      b - The band to return
      data - The DataBuffer containing the image data
      Returns:
      the sample in the specified band for the specified pixel.
      See Also:
      setSample(int, int, int, int, DataBuffer)

    • getSampleFloat

      public float getSampleFloat​(int x, int y, int b, java.awt.image.DataBuffer data)
      Returns the sample in a specified band for the pixel located at (x,y) as a float. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      getSampleFloat in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      b - The band to return
      data - The DataBuffer containing the image data
      Returns:
      a float value that represents the sample in the specified band for the specified pixel.

    • getSampleDouble

      public double getSampleDouble​(int x, int y, int b, java.awt.image.DataBuffer data)
      Returns the sample in a specified band for a pixel located at (x,y) as a double. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      getSampleDouble in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      b - The band to return
      data - The DataBuffer containing the image data
      Returns:
      a double value that represents the sample in the specified band for the specified pixel.

    • getSamples

      public int[] getSamples​(int x, int y, int w, int h, int b, int[] iArray, java.awt.image.DataBuffer data)
      Returns the samples in a specified band for the specified rectangle of pixels in an int array, one sample per data array element. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      getSamples in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the upper left pixel location
      y - The Y coordinate of the upper left pixel location
      w - The width of the pixel rectangle
      h - The height of the pixel rectangle
      b - The band to return
      iArray - If non-null, returns the samples in this array
      data - The DataBuffer containing the image data
      Returns:
      the samples in the specified band for the pixels within the specified region.
      See Also:
      setSamples(int, int, int, int, int, int[], DataBuffer)

    • setDataElements

      public void setDataElements​(int x, int y, java.lang.Object obj, java.awt.image.DataBuffer data)
      Sets the data for a single pixel in the specified DataBuffer from a primitive array of type TransferType. For a BandedSampleModel, this will be the same as the data type, and samples are transferred one per array element.

      The following code illustrates transferring data for one pixel from DataBuffer db1, whose storage layout is described by BandedSampleModel bsm1, to DataBuffer db2, whose storage layout is described by BandedSampleModel bsm2. The transfer will generally be more efficient than using getPixel/setPixel. 

                   BandedSampleModel bsm1, bsm2;
             DataBufferInt db1, db2;
             bsm2.setDataElements(x, y, bsm1.getDataElements(x, y, null, db1),
                            db2);
      Using getDataElements/setDataElements to transfer between two DataBuffer/SampleModel pairs is legitimate if the SampleModels have the same number of bands, corresponding bands have the same number of bits per sample, and the TransferTypes are the same.

      obj must be a primitive array of type TransferType. Otherwise, a ClassCastException is thrown. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds, or if obj is not large enough to hold the pixel data.

      Overrides:
      setDataElements in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      obj - If non-null, returns the primitive array in this object
      data - The DataBuffer containing the image data
      See Also:
      getDataElements(int, int, Object, DataBuffer)

    • setPixel

      public void setPixel​(int x, int y, int[] iArray, java.awt.image.DataBuffer data)
      Sets a pixel in the DataBuffer using an int array of samples for input. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      setPixel in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      iArray - The input samples in an int array
      data - The DataBuffer containing the image data
      See Also:
      getPixel(int, int, int[], DataBuffer)

    • setPixels

      public void setPixels​(int x, int y, int w, int h, int[] iArray, java.awt.image.DataBuffer data)
      Sets all samples for a rectangle of pixels from an int array containing one sample per array element. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      setPixels in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the upper left pixel location
      y - The Y coordinate of the upper left pixel location
      w - The width of the pixel rectangle
      h - The height of the pixel rectangle
      iArray - The input samples in an int array
      data - The DataBuffer containing the image data
      See Also:
      getPixels(int, int, int, int, int[], DataBuffer)

    • setSample

      public void setSample​(int x, int y, int b, int s, java.awt.image.DataBuffer data)
      Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using an int for input. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      setSample in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      b - The band to set
      s - The input sample as an int
      data - The DataBuffer containing the image data
      See Also:
      getSample(int, int, int, DataBuffer)

    • setSample

      public void setSample​(int x, int y, int b, float s, java.awt.image.DataBuffer data)
      Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a float for input. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      setSample in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      b - The band to set
      s - The input sample as a float
      data - The DataBuffer containing the image data
      See Also:
      getSample(int, int, int, DataBuffer)

    • setSample

      public void setSample​(int x, int y, int b, double s, java.awt.image.DataBuffer data)
      Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a double for input. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      setSample in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the pixel location
      y - The Y coordinate of the pixel location
      b - The band to set
      s - The input sample as a double
      data - The DataBuffer containing the image data
      See Also:
      getSample(int, int, int, DataBuffer)

    • setSamples

      public void setSamples​(int x, int y, int w, int h, int b, int[] iArray, java.awt.image.DataBuffer data)
      Sets the samples in the specified band for the specified rectangle of pixels from an int array containing one sample per data array element. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.
      Overrides:
      setSamples in class java.awt.image.ComponentSampleModel
      Parameters:
      x - The X coordinate of the upper left pixel location
      y - The Y coordinate of the upper left pixel location
      w - The width of the pixel rectangle
      h - The height of the pixel rectangle
      b - The band to set
      iArray - The input sample array
      data - The DataBuffer containing the image data
      See Also:
      getSamples(int, int, int, int, int, int[], DataBuffer)

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class java.awt.image.ComponentSampleModel