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	/*
	* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	/* ****************************************************************
	******************************************************************
	******************************************************************
	*** COPYRIGHT (c) Eastman Kodak Company, 1997
	*** As an unpublished work pursuant to Title 17 of the United
	*** States Code. All rights reserved.
	******************************************************************
	******************************************************************
	******************************************************************/


	package java.awt.image;
	import java.awt.Rectangle;
	import java.awt.Point;

	import sun.awt.image.ByteInterleavedRaster;
	import sun.awt.image.ShortInterleavedRaster;
	import sun.awt.image.IntegerInterleavedRaster;
	import sun.awt.image.ByteBandedRaster;
	import sun.awt.image.ShortBandedRaster;
	import sun.awt.image.BytePackedRaster;
	import sun.awt.image.SunWritableRaster;

	/**
	* A class representing a rectangular array of pixels. A Raster
	* encapsulates a DataBuffer that stores the sample values and a
	* SampleModel that describes how to locate a given sample value in a
	* DataBuffer.
	* <p>
	* A Raster defines values for pixels occupying a particular
	* rectangular area of the plane, not necessarily including (0, 0).
	* The rectangle, known as the Raster's bounding rectangle and
	* available by means of the getBounds method, is defined by minX,
	* minY, width, and height values. The minX and minY values define
	* the coordinate of the upper left corner of the Raster. References
	* to pixels outside of the bounding rectangle may result in an
	* exception being thrown, or may result in references to unintended
	* elements of the Raster's associated DataBuffer. It is the user's
	* responsibility to avoid accessing such pixels.
	* <p>
	* A SampleModel describes how samples of a Raster
	* are stored in the primitive array elements of a DataBuffer.
	* Samples may be stored one per data element, as in a
	* PixelInterleavedSampleModel or BandedSampleModel, or packed several to
	* an element, as in a SinglePixelPackedSampleModel or
	* MultiPixelPackedSampleModel. The SampleModel is also
	* controls whether samples are sign extended, allowing unsigned
	* data to be stored in signed Java data types such as byte, short, and
	* int.
	* <p>
	* Although a Raster may live anywhere in the plane, a SampleModel
	* makes use of a simple coordinate system that starts at (0, 0). A
	* Raster therefore contains a translation factor that allows pixel
	* locations to be mapped between the Raster's coordinate system and
	* that of the SampleModel. The translation from the SampleModel
	* coordinate system to that of the Raster may be obtained by the
	* getSampleModelTranslateX and getSampleModelTranslateY methods.
	* <p>
	* A Raster may share a DataBuffer with another Raster either by
	* explicit construction or by the use of the createChild and
	* createTranslatedChild methods. Rasters created by these methods
	* can return a reference to the Raster they were created from by
	* means of the getParent method. For a Raster that was not
	* constructed by means of a call to createTranslatedChild or
	* createChild, getParent will return null.
	* <p>
	* The createTranslatedChild method returns a new Raster that
	* shares all of the data of the current Raster, but occupies a
	* bounding rectangle of the same width and height but with a
	* different starting point. For example, if the parent Raster
	* occupied the region (10, 10) to (100, 100), and the translated
	* Raster was defined to start at (50, 50), then pixel (20, 20) of the
	* parent and pixel (60, 60) of the child occupy the same location in
	* the DataBuffer shared by the two Rasters. In the first case, (-10,
	* -10) should be added to a pixel coordinate to obtain the
	* corresponding SampleModel coordinate, and in the second case (-50,
	* -50) should be added.
	* <p>
	* The translation between a parent and child Raster may be
	* determined by subtracting the child's sampleModelTranslateX and
	* sampleModelTranslateY values from those of the parent.
	* <p>
	* The createChild method may be used to create a new Raster
	* occupying only a subset of its parent's bounding rectangle
	* (with the same or a translated coordinate system) or
	* with a subset of the bands of its parent.
	* <p>
	* All constructors are protected. The correct way to create a
	* Raster is to use one of the static create methods defined in this
	* class. These methods create instances of Raster that use the
	* standard Interleaved, Banded, and Packed SampleModels and that may
	* be processed more efficiently than a Raster created by combining
	* an externally generated SampleModel and DataBuffer.
	* @see java.awt.image.DataBuffer
	* @see java.awt.image.SampleModel
	* @see java.awt.image.PixelInterleavedSampleModel
	* @see java.awt.image.BandedSampleModel
	* @see java.awt.image.SinglePixelPackedSampleModel
	* @see java.awt.image.MultiPixelPackedSampleModel
	*/
	public class Raster {

	/**
	* The SampleModel that describes how pixels from this Raster
	* are stored in the DataBuffer.
	*/
	protected SampleModel sampleModel;

	/** The DataBuffer that stores the image data. */
	protected DataBuffer dataBuffer;

	/** The X coordinate of the upper-left pixel of this Raster. */
	protected int minX;

	/** The Y coordinate of the upper-left pixel of this Raster. */
	protected int minY;

	/** The width of this Raster. */
	protected int width;

	/** The height of this Raster. */
	protected int height;

	/**
	* The X translation from the coordinate space of the
	* Raster's SampleModel to that of the Raster.
	*/
	protected int sampleModelTranslateX;

	/**
	* The Y translation from the coordinate space of the
	* Raster's SampleModel to that of the Raster.
	*/
	protected int sampleModelTranslateY;

	/** The number of bands in the Raster. */
	protected int numBands;

	/** The number of DataBuffer data elements per pixel. */
	protected int numDataElements;

	/** The parent of this Raster, or null. */
	protected Raster parent;

	static private native void initIDs();
	static {
	ColorModel.loadLibraries();
	initIDs();
	}

	/**
	* Creates a Raster based on a PixelInterleavedSampleModel with the
	* specified data type, width, height, and number of bands.
	*
	* <p> The upper left corner of the Raster is given by the
	* location argument. If location is null, (0, 0) will be used.
	* The dataType parameter should be one of the enumerated values
	* defined in the DataBuffer class.
	*
	* <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
	* Rasters are not supported. To create a 1-band Raster of type
	* <code>DataBuffer.TYPE_INT</code>, use
	* Raster.createPackedRaster().
	* <p> The only dataTypes supported currently are TYPE_BYTE
	* and TYPE_USHORT.
	* @param dataType the data type for storing samples
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param bands the number of bands
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified data type,
	* width, height and number of bands.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	*/
	public static WritableRaster createInterleavedRaster(int dataType,
	int w, int h,
	int bands,
	Point location) {
	int[] bandOffsets = new int[bands];
	for (int i = 0; i < bands; i++) {
	bandOffsets[i] = i;
	}
	return createInterleavedRaster(dataType, w, h, w*bands, bands,
	bandOffsets, location);
	}

	/**
	* Creates a Raster based on a PixelInterleavedSampleModel with the
	* specified data type, width, height, scanline stride, pixel
	* stride, and band offsets. The number of bands is inferred from
	* bandOffsets.length.
	*
	* <p> The upper left corner of the Raster is given by the
	* location argument. If location is null, (0, 0) will be used.
	* The dataType parameter should be one of the enumerated values
	* defined in the DataBuffer class.
	*
	* <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
	* Rasters are not supported. To create a 1-band Raster of type
	* <code>DataBuffer.TYPE_INT</code>, use
	* Raster.createPackedRaster().
	* <p> The only dataTypes supported currently are TYPE_BYTE
	* and TYPE_USHORT.
	* @param dataType the data type for storing samples
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param scanlineStride the line stride of the image data
	* @param pixelStride the pixel stride of the image data
	* @param bandOffsets the offsets of all bands
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified data type,
	* width, height, scanline stride, pixel stride and band
	* offsets.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>, or
	* <code>DataBuffer.TYPE_USHORT</code>.
	*/
	public static WritableRaster createInterleavedRaster(int dataType,
	int w, int h,
	int scanlineStride,
	int pixelStride,
	int bandOffsets[],
	Point location) {
	DataBuffer d;

	int size = scanlineStride * (h - 1) + // fisrt (h - 1) scans
	pixelStride * w; // last scan

	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	d = new DataBufferByte(size);
	break;

	case DataBuffer.TYPE_USHORT:
	d = new DataBufferUShort(size);
	break;

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}

	return createInterleavedRaster(d, w, h, scanlineStride,
	pixelStride, bandOffsets, location);
	}

	/**
	* Creates a Raster based on a BandedSampleModel with the
	* specified data type, width, height, and number of bands.
	*
	* <p> The upper left corner of the Raster is given by the
	* location argument. If location is null, (0, 0) will be used.
	* The dataType parameter should be one of the enumerated values
	* defined in the DataBuffer class.
	*
	* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
	* and TYPE_INT.
	* @param dataType the data type for storing samples
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param bands the number of bands
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified data type,
	* width, height and number of bands.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws ArrayIndexOutOfBoundsException if <code>bands</code>
	* is less than 1
	*/
	public static WritableRaster createBandedRaster(int dataType,
	int w, int h,
	int bands,
	Point location) {
	if (bands < 1) {
	throw new ArrayIndexOutOfBoundsException("Number of bands ("+
	bands+") must"+
	" be greater than 0");
	}
	int[] bankIndices = new int[bands];
	int[] bandOffsets = new int[bands];
	for (int i = 0; i < bands; i++) {
	bankIndices[i] = i;
	bandOffsets[i] = 0;
	}

	return createBandedRaster(dataType, w, h, w,
	bankIndices, bandOffsets,
	location);
	}

	/**
	* Creates a Raster based on a BandedSampleModel with the
	* specified data type, width, height, scanline stride, bank
	* indices and band offsets. The number of bands is inferred from
	* bankIndices.length and bandOffsets.length, which must be the
	* same.
	*
	* <p> The upper left corner of the Raster is given by the
	* location argument. The dataType parameter should be one of the
	* enumerated values defined in the DataBuffer class.
	*
	* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
	* and TYPE_INT.
	* @param dataType the data type for storing samples
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param scanlineStride the line stride of the image data
	* @param bankIndices the bank indices for each band
	* @param bandOffsets the offsets of all bands
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified data type,
	* width, height, scanline stride, bank indices and band
	* offsets.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* or <code>DataBuffer.TYPE_INT</code>
	* @throws ArrayIndexOutOfBoundsException if <code>bankIndices</code>
	* or <code>bandOffsets</code> is <code>null</code>
	*/
	public static WritableRaster createBandedRaster(int dataType,
	int w, int h,
	int scanlineStride,
	int bankIndices[],
	int bandOffsets[],
	Point location) {
	DataBuffer d;
	int bands = bandOffsets.length;

	if (bankIndices == null) {
	throw new
	ArrayIndexOutOfBoundsException("Bank indices array is null");
	}
	if (bandOffsets == null) {
	throw new
	ArrayIndexOutOfBoundsException("Band offsets array is null");
	}

	// Figure out the #banks and the largest band offset
	int maxBank = bankIndices[0];
	int maxBandOff = bandOffsets[0];
	for (int i = 1; i < bands; i++) {
	if (bankIndices[i] > maxBank) {
	maxBank = bankIndices[i];
	}
	if (bandOffsets[i] > maxBandOff) {
	maxBandOff = bandOffsets[i];
	}
	}
	int banks = maxBank + 1;
	int size = maxBandOff +
	scanlineStride * (h - 1) + // fisrt (h - 1) scans
	w; // last scan

	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	d = new DataBufferByte(size, banks);
	break;

	case DataBuffer.TYPE_USHORT:
	d = new DataBufferUShort(size, banks);
	break;

	case DataBuffer.TYPE_INT:
	d = new DataBufferInt(size, banks);
	break;

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}

	return createBandedRaster(d, w, h, scanlineStride,
	bankIndices, bandOffsets, location);
	}

	/**
	* Creates a Raster based on a SinglePixelPackedSampleModel with
	* the specified data type, width, height, and band masks.
	* The number of bands is inferred from bandMasks.length.
	*
	* <p> The upper left corner of the Raster is given by the
	* location argument. If location is null, (0, 0) will be used.
	* The dataType parameter should be one of the enumerated values
	* defined in the DataBuffer class.
	*
	* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
	* and TYPE_INT.
	* @param dataType the data type for storing samples
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param bandMasks an array containing an entry for each band
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified data type,
	* width, height, and band masks.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* or <code>DataBuffer.TYPE_INT</code>
	*/
	public static WritableRaster createPackedRaster(int dataType,
	int w, int h,
	int bandMasks[],
	Point location) {
	DataBuffer d;

	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	d = new DataBufferByte(w*h);
	break;

	case DataBuffer.TYPE_USHORT:
	d = new DataBufferUShort(w*h);
	break;

	case DataBuffer.TYPE_INT:
	d = new DataBufferInt(w*h);
	break;

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}

	return createPackedRaster(d, w, h, w, bandMasks, location);
	}

	/**
	* Creates a Raster based on a packed SampleModel with the
	* specified data type, width, height, number of bands, and bits
	* per band. If the number of bands is one, the SampleModel will
	* be a MultiPixelPackedSampleModel.
	*
	* <p> If the number of bands is more than one, the SampleModel
	* will be a SinglePixelPackedSampleModel, with each band having
	* bitsPerBand bits. In either case, the requirements on dataType
	* and bitsPerBand imposed by the corresponding SampleModel must
	* be met.
	*
	* <p> The upper left corner of the Raster is given by the
	* location argument. If location is null, (0, 0) will be used.
	* The dataType parameter should be one of the enumerated values
	* defined in the DataBuffer class.
	*
	* <p> The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT,
	* and TYPE_INT.
	* @param dataType the data type for storing samples
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param bands the number of bands
	* @param bitsPerBand the number of bits per band
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified data type,
	* width, height, number of bands, and bits per band.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if the product of
	* <code>bitsPerBand</code> and <code>bands</code> is
	* greater than the number of bits held by
	* <code>dataType</code>
	* @throws IllegalArgumentException if <code>bitsPerBand</code> or
	* <code>bands</code> is not greater than zero
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* or <code>DataBuffer.TYPE_INT</code>
	*/
	public static WritableRaster createPackedRaster(int dataType,
	int w, int h,
	int bands,
	int bitsPerBand,
	Point location) {
	DataBuffer d;

	if (bands <= 0) {
	throw new IllegalArgumentException("Number of bands ("+bands+
	") must be greater than 0");
	}

	if (bitsPerBand <= 0) {
	throw new IllegalArgumentException("Bits per band ("+bitsPerBand+
	") must be greater than 0");
	}

	if (bands != 1) {
	int[] masks = new int[bands];
	int mask = (1 << bitsPerBand) - 1;
	int shift = (bands-1)*bitsPerBand;

	/* Make sure the total mask size will fit in the data type */
	if (shift+bitsPerBand > DataBuffer.getDataTypeSize(dataType)) {
	throw new IllegalArgumentException("bitsPerBand("+
	bitsPerBand+") * bands is "+
	" greater than data type "+
	"size.");
	}
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	case DataBuffer.TYPE_USHORT:
	case DataBuffer.TYPE_INT:
	break;
	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}

	for (int i = 0; i < bands; i++) {
	masks[i] = mask << shift;
	shift = shift - bitsPerBand;
	}

	return createPackedRaster(dataType, w, h, masks, location);
	}
	else {
	double fw = w;
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	d = new DataBufferByte((int)(Math.ceil(fw/(8/bitsPerBand)))*h);
	break;

	case DataBuffer.TYPE_USHORT:
	d = new DataBufferUShort((int)(Math.ceil(fw/(16/bitsPerBand)))*h);
	break;

	case DataBuffer.TYPE_INT:
	d = new DataBufferInt((int)(Math.ceil(fw/(32/bitsPerBand)))*h);
	break;

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}

	return createPackedRaster(d, w, h, bitsPerBand, location);
	}
	}

	/**
	* Creates a Raster based on a PixelInterleavedSampleModel with the
	* specified DataBuffer, width, height, scanline stride, pixel
	* stride, and band offsets. The number of bands is inferred from
	* bandOffsets.length. The upper left corner of the Raster
	* is given by the location argument. If location is null, (0, 0)
	* will be used.
	* <p> Note that interleaved <code>DataBuffer.TYPE_INT</code>
	* Rasters are not supported. To create a 1-band Raster of type
	* <code>DataBuffer.TYPE_INT</code>, use
	* Raster.createPackedRaster().
	* @param dataBuffer the <code>DataBuffer</code> that contains the
	* image data
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param scanlineStride the line stride of the image data
	* @param pixelStride the pixel stride of the image data
	* @param bandOffsets the offsets of all bands
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified
	* <code>DataBuffer</code>, width, height, scanline stride,
	* pixel stride and band offsets.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* @throws RasterFormatException if <code>dataBuffer</code> has more
	* than one bank.
	* @throws NullPointerException if <code>dataBuffer</code> is null
	*/
	public static WritableRaster createInterleavedRaster(DataBuffer dataBuffer,
	int w, int h,
	int scanlineStride,
	int pixelStride,
	int bandOffsets[],
	Point location) {
	if (dataBuffer == null) {
	throw new NullPointerException("DataBuffer cannot be null");
	}
	if (location == null) {
	location = new Point(0, 0);
	}
	int dataType = dataBuffer.getDataType();

	PixelInterleavedSampleModel csm =
	new PixelInterleavedSampleModel(dataType, w, h,
	pixelStride,
	scanlineStride,
	bandOffsets);
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteInterleavedRaster(csm, dataBuffer, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortInterleavedRaster(csm, dataBuffer, location);

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}
	}

	/**
	* Creates a Raster based on a BandedSampleModel with the
	* specified DataBuffer, width, height, scanline stride, bank
	* indices, and band offsets. The number of bands is inferred
	* from bankIndices.length and bandOffsets.length, which must be
	* the same. The upper left corner of the Raster is given by the
	* location argument. If location is null, (0, 0) will be used.
	* @param dataBuffer the <code>DataBuffer</code> that contains the
	* image data
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param scanlineStride the line stride of the image data
	* @param bankIndices the bank indices for each band
	* @param bandOffsets the offsets of all bands
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified
	* <code>DataBuffer</code>, width, height, scanline stride,
	* bank indices and band offsets.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* or <code>DataBuffer.TYPE_INT</code>
	* @throws NullPointerException if <code>dataBuffer</code> is null
	*/
	public static WritableRaster createBandedRaster(DataBuffer dataBuffer,
	int w, int h,
	int scanlineStride,
	int bankIndices[],
	int bandOffsets[],
	Point location) {
	if (dataBuffer == null) {
	throw new NullPointerException("DataBuffer cannot be null");
	}
	if (location == null) {
	location = new Point(0,0);
	}
	int dataType = dataBuffer.getDataType();

	int bands = bankIndices.length;
	if (bandOffsets.length != bands) {
	throw new IllegalArgumentException(
	"bankIndices.length != bandOffsets.length");
	}

	BandedSampleModel bsm =
	new BandedSampleModel(dataType, w, h,
	scanlineStride,
	bankIndices, bandOffsets);

	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteBandedRaster(bsm, dataBuffer, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortBandedRaster(bsm, dataBuffer, location);

	case DataBuffer.TYPE_INT:
	return new SunWritableRaster(bsm, dataBuffer, location);

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}
	}

	/**
	* Creates a Raster based on a SinglePixelPackedSampleModel with
	* the specified DataBuffer, width, height, scanline stride, and
	* band masks. The number of bands is inferred from bandMasks.length.
	* The upper left corner of the Raster is given by
	* the location argument. If location is null, (0, 0) will be used.
	* @param dataBuffer the <code>DataBuffer</code> that contains the
	* image data
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param scanlineStride the line stride of the image data
	* @param bandMasks an array containing an entry for each band
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified
	* <code>DataBuffer</code>, width, height, scanline stride,
	* and band masks.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* or <code>DataBuffer.TYPE_INT</code>
	* @throws RasterFormatException if <code>dataBuffer</code> has more
	* than one bank.
	* @throws NullPointerException if <code>dataBuffer</code> is null
	*/
	public static WritableRaster createPackedRaster(DataBuffer dataBuffer,
	int w, int h,
	int scanlineStride,
	int bandMasks[],
	Point location) {
	if (dataBuffer == null) {
	throw new NullPointerException("DataBuffer cannot be null");
	}
	if (location == null) {
	location = new Point(0,0);
	}
	int dataType = dataBuffer.getDataType();

	SinglePixelPackedSampleModel sppsm =
	new SinglePixelPackedSampleModel(dataType, w, h, scanlineStride,
	bandMasks);

	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteInterleavedRaster(sppsm, dataBuffer, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortInterleavedRaster(sppsm, dataBuffer, location);

	case DataBuffer.TYPE_INT:
	return new IntegerInterleavedRaster(sppsm, dataBuffer, location);

	default:
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}
	}

	/**
	* Creates a Raster based on a MultiPixelPackedSampleModel with the
	* specified DataBuffer, width, height, and bits per pixel. The upper
	* left corner of the Raster is given by the location argument. If
	* location is null, (0, 0) will be used.
	* @param dataBuffer the <code>DataBuffer</code> that contains the
	* image data
	* @param w the width in pixels of the image data
	* @param h the height in pixels of the image data
	* @param bitsPerPixel the number of bits for each pixel
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a WritableRaster object with the specified
	* <code>DataBuffer</code>, width, height, and
	* bits per pixel.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>location.x + w</code> or
	* <code>location.y + h</code> results in integer
	* overflow
	* @throws IllegalArgumentException if <code>dataType</code> is not
	* one of the supported data types, which are
	* <code>DataBuffer.TYPE_BYTE</code>,
	* <code>DataBuffer.TYPE_USHORT</code>
	* or <code>DataBuffer.TYPE_INT</code>
	* @throws RasterFormatException if <code>dataBuffer</code> has more
	* than one bank.
	* @throws NullPointerException if <code>dataBuffer</code> is null
	*/
	public static WritableRaster createPackedRaster(DataBuffer dataBuffer,
	int w, int h,
	int bitsPerPixel,
	Point location) {
	if (dataBuffer == null) {
	throw new NullPointerException("DataBuffer cannot be null");
	}
	if (location == null) {
	location = new Point(0,0);
	}
	int dataType = dataBuffer.getDataType();

	if (dataType != DataBuffer.TYPE_BYTE &&
	dataType != DataBuffer.TYPE_USHORT &&
	dataType != DataBuffer.TYPE_INT) {
	throw new IllegalArgumentException("Unsupported data type " +
	dataType);
	}

	if (dataBuffer.getNumBanks() != 1) {
	throw new
	RasterFormatException("DataBuffer for packed Rasters"+
	" must only have 1 bank.");
	}

	MultiPixelPackedSampleModel mppsm =
	new MultiPixelPackedSampleModel(dataType, w, h, bitsPerPixel);

	if (dataType == DataBuffer.TYPE_BYTE &&
	(bitsPerPixel == 1 \|\| bitsPerPixel == 2 \|\| bitsPerPixel == 4)) {
	return new BytePackedRaster(mppsm, dataBuffer, location);
	} else {
	return new SunWritableRaster(mppsm, dataBuffer, location);
	}
	}


	/**
	* Creates a Raster with the specified SampleModel and DataBuffer.
	* The upper left corner of the Raster is given by the location argument.
	* If location is null, (0, 0) will be used.
	* @param sm the specified <code>SampleModel</code>
	* @param db the specified <code>DataBuffer</code>
	* @param location the upper-left corner of the <code>Raster</code>
	* @return a <code>Raster</code> with the specified
	* <code>SampleModel</code>, <code>DataBuffer</code>, and
	* location.
	* @throws RasterFormatException if computing either
	* <code>location.x + sm.getWidth()</code> or
	* <code>location.y + sm.getHeight()</code> results in integer
	* overflow
	* @throws RasterFormatException if <code>db</code> has more
	* than one bank and <code>sm</code> is a
	* PixelInterleavedSampleModel, SinglePixelPackedSampleModel,
	* or MultiPixelPackedSampleModel.
	* @throws NullPointerException if either SampleModel or DataBuffer is
	* null
	*/
	public static Raster createRaster(SampleModel sm,
	DataBuffer db,
	Point location) {
	if ((sm == null) \|\| (db == null)) {
	throw new NullPointerException("SampleModel and DataBuffer cannot be null");
	}

	if (location == null) {
	location = new Point(0,0);
	}
	int dataType = sm.getDataType();

	if (sm instanceof PixelInterleavedSampleModel) {
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteInterleavedRaster(sm, db, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortInterleavedRaster(sm, db, location);
	}
	} else if (sm instanceof SinglePixelPackedSampleModel) {
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteInterleavedRaster(sm, db, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortInterleavedRaster(sm, db, location);

	case DataBuffer.TYPE_INT:
	return new IntegerInterleavedRaster(sm, db, location);
	}
	} else if (sm instanceof MultiPixelPackedSampleModel &&
	dataType == DataBuffer.TYPE_BYTE &&
	sm.getSampleSize(0) < 8) {
	return new BytePackedRaster(sm, db, location);
	}

	// we couldn't do anything special - do the generic thing

	return new Raster(sm,db,location);
	}

	/**
	* Creates a WritableRaster with the specified SampleModel.
	* The upper left corner of the Raster is given by the location argument.
	* If location is null, (0, 0) will be used.
	* @param sm the specified <code>SampleModel</code>
	* @param location the upper-left corner of the
	* <code>WritableRaster</code>
	* @return a <code>WritableRaster</code> with the specified
	* <code>SampleModel</code> and location.
	* @throws RasterFormatException if computing either
	* <code>location.x + sm.getWidth()</code> or
	* <code>location.y + sm.getHeight()</code> results in integer
	* overflow
	*/
	public static WritableRaster createWritableRaster(SampleModel sm,
	Point location) {
	if (location == null) {
	location = new Point(0,0);
	}

	return createWritableRaster(sm, sm.createDataBuffer(), location);
	}

	/**
	* Creates a WritableRaster with the specified SampleModel and DataBuffer.
	* The upper left corner of the Raster is given by the location argument.
	* If location is null, (0, 0) will be used.
	* @param sm the specified <code>SampleModel</code>
	* @param db the specified <code>DataBuffer</code>
	* @param location the upper-left corner of the
	* <code>WritableRaster</code>
	* @return a <code>WritableRaster</code> with the specified
	* <code>SampleModel</code>, <code>DataBuffer</code>, and
	* location.
	* @throws RasterFormatException if computing either
	* <code>location.x + sm.getWidth()</code> or
	* <code>location.y + sm.getHeight()</code> results in integer
	* overflow
	* @throws RasterFormatException if <code>db</code> has more
	* than one bank and <code>sm</code> is a
	* PixelInterleavedSampleModel, SinglePixelPackedSampleModel,
	* or MultiPixelPackedSampleModel.
	* @throws NullPointerException if either SampleModel or DataBuffer is null
	*/
	public static WritableRaster createWritableRaster(SampleModel sm,
	DataBuffer db,
	Point location) {
	if ((sm == null) \|\| (db == null)) {
	throw new NullPointerException("SampleModel and DataBuffer cannot be null");
	}
	if (location == null) {
	location = new Point(0,0);
	}

	int dataType = sm.getDataType();

	if (sm instanceof PixelInterleavedSampleModel) {
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteInterleavedRaster(sm, db, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortInterleavedRaster(sm, db, location);
	}
	} else if (sm instanceof SinglePixelPackedSampleModel) {
	switch(dataType) {
	case DataBuffer.TYPE_BYTE:
	return new ByteInterleavedRaster(sm, db, location);

	case DataBuffer.TYPE_USHORT:
	return new ShortInterleavedRaster(sm, db, location);

	case DataBuffer.TYPE_INT:
	return new IntegerInterleavedRaster(sm, db, location);
	}
	} else if (sm instanceof MultiPixelPackedSampleModel &&
	dataType == DataBuffer.TYPE_BYTE &&
	sm.getSampleSize(0) < 8) {
	return new BytePackedRaster(sm, db, location);
	}

	// we couldn't do anything special - do the generic thing

	return new SunWritableRaster(sm,db,location);
	}

	/**
	* Constructs a Raster with the given SampleModel. The Raster's
	* upper left corner is origin and it is the same size as the
	* SampleModel. A DataBuffer large enough to describe the
	* Raster is automatically created.
	* @param sampleModel The SampleModel that specifies the layout
	* @param origin The Point that specified the origin
	* @throws RasterFormatException if computing either
	* <code>origin.x + sampleModel.getWidth()</code> or
	* <code>origin.y + sampleModel.getHeight()</code> results in
	* integer overflow
	* @throws NullPointerException either <code>sampleModel</code> or
	* <code>origin</code> is null
	*/
	protected Raster(SampleModel sampleModel,
	Point origin) {
	this(sampleModel,
	sampleModel.createDataBuffer(),
	new Rectangle(origin.x,
	origin.y,
	sampleModel.getWidth(),
	sampleModel.getHeight()),
	origin,
	null);
	}

	/**
	* Constructs a Raster with the given SampleModel and DataBuffer.
	* The Raster's upper left corner is origin and it is the same size
	* as the SampleModel. The DataBuffer is not initialized and must
	* be compatible with SampleModel.
	* @param sampleModel The SampleModel that specifies the layout
	* @param dataBuffer The DataBuffer that contains the image data
	* @param origin The Point that specifies the origin
	* @throws RasterFormatException if computing either
	* <code>origin.x + sampleModel.getWidth()</code> or
	* <code>origin.y + sampleModel.getHeight()</code> results in
	* integer overflow
	* @throws NullPointerException either <code>sampleModel</code> or
	* <code>origin</code> is null
	*/
	protected Raster(SampleModel sampleModel,
	DataBuffer dataBuffer,
	Point origin) {
	this(sampleModel,
	dataBuffer,
	new Rectangle(origin.x,
	origin.y,
	sampleModel.getWidth(),
	sampleModel.getHeight()),
	origin,
	null);
	}

	/**
	* Constructs a Raster with the given SampleModel, DataBuffer, and
	* parent. aRegion specifies the bounding rectangle of the new
	* Raster. When translated into the base Raster's coordinate
	* system, aRegion must be contained by the base Raster.
	* (The base Raster is the Raster's ancestor which has no parent.)
	* sampleModelTranslate specifies the sampleModelTranslateX and
	* sampleModelTranslateY values of the new Raster.
	*
	* Note that this constructor should generally be called by other
	* constructors or create methods, it should not be used directly.
	* @param sampleModel The SampleModel that specifies the layout
	* @param dataBuffer The DataBuffer that contains the image data
	* @param aRegion The Rectangle that specifies the image area
	* @param sampleModelTranslate The Point that specifies the translation
	* from SampleModel to Raster coordinates
	* @param parent The parent (if any) of this raster
	* @throws NullPointerException if any of <code>sampleModel</code>,
	* <code>dataBuffer</code>, <code>aRegion</code> or
	* <code>sampleModelTranslate</code> is null
	* @throws RasterFormatException if <code>aRegion</code> has width
	* or height less than or equal to zero, or computing either
	* <code>aRegion.x + aRegion.width</code> or
	* <code>aRegion.y + aRegion.height</code> results in integer
	* overflow
	*/
	protected Raster(SampleModel sampleModel,
	DataBuffer dataBuffer,
	Rectangle aRegion,
	Point sampleModelTranslate,
	Raster parent) {

	if ((sampleModel == null) \|\| (dataBuffer == null) \|\|
	(aRegion == null) \|\| (sampleModelTranslate == null)) {
	throw new NullPointerException("SampleModel, dataBuffer, aRegion and " +
	"sampleModelTranslate cannot be null");
	}
	this.sampleModel = sampleModel;
	this.dataBuffer = dataBuffer;
	minX = aRegion.x;
	minY = aRegion.y;
	width = aRegion.width;
	height = aRegion.height;
	if (width <= 0 \|\| height <= 0) {
	throw new RasterFormatException("negative or zero " +
	((width <= 0) ? "width" : "height"));
	}
	if ((minX + width) < minX) {
	throw new RasterFormatException(
	"overflow condition for X coordinates of Raster");
	}
	if ((minY + height) < minY) {
	throw new RasterFormatException(
	"overflow condition for Y coordinates of Raster");
	}

	sampleModelTranslateX = sampleModelTranslate.x;
	sampleModelTranslateY = sampleModelTranslate.y;

	numBands = sampleModel.getNumBands();
	numDataElements = sampleModel.getNumDataElements();
	this.parent = parent;
	}


	/**
	* Returns the parent Raster (if any) of this Raster or null.
	* @return the parent Raster or <code>null</code>.
	*/
	public Raster getParent() {
	return parent;
	}

	/**
	* Returns the X translation from the coordinate system of the
	* SampleModel to that of the Raster. To convert a pixel's X
	* coordinate from the Raster coordinate system to the SampleModel
	* coordinate system, this value must be subtracted.
	* @return the X translation from the coordinate space of the
	* Raster's SampleModel to that of the Raster.
	*/
	final public int getSampleModelTranslateX() {
	return sampleModelTranslateX;
	}

	/**
	* Returns the Y translation from the coordinate system of the
	* SampleModel to that of the Raster. To convert a pixel's Y
	* coordinate from the Raster coordinate system to the SampleModel
	* coordinate system, this value must be subtracted.
	* @return the Y translation from the coordinate space of the
	* Raster's SampleModel to that of the Raster.
	*/
	final public int getSampleModelTranslateY() {
	return sampleModelTranslateY;
	}

	/**
	* Create a compatible WritableRaster the same size as this Raster with
	* the same SampleModel and a new initialized DataBuffer.
	* @return a compatible <code>WritableRaster</code> with the same sample
	* model and a new data buffer.
	*/
	public WritableRaster createCompatibleWritableRaster() {
	return new SunWritableRaster(sampleModel, new Point(0,0));
	}

	/**
	* Create a compatible WritableRaster with the specified size, a new
	* SampleModel, and a new initialized DataBuffer.
	* @param w the specified width of the new <code>WritableRaster</code>
	* @param h the specified height of the new <code>WritableRaster</code>
	* @return a compatible <code>WritableRaster</code> with the specified
	* size and a new sample model and data buffer.
	* @exception RasterFormatException if the width or height is less than
	* or equal to zero.
	*/
	public WritableRaster createCompatibleWritableRaster(int w, int h) {
	if (w <= 0 \|\| h <=0) {
	throw new RasterFormatException("negative " +
	((w <= 0) ? "width" : "height"));
	}

	SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);

	return new SunWritableRaster(sm, new Point(0,0));
	}

	/**
	* Create a compatible WritableRaster with location (minX, minY)
	* and size (width, height) specified by rect, a
	* new SampleModel, and a new initialized DataBuffer.
	* @param rect a <code>Rectangle</code> that specifies the size and
	* location of the <code>WritableRaster</code>
	* @return a compatible <code>WritableRaster</code> with the specified
	* size and location and a new sample model and data buffer.
	* @throws RasterFormatException if <code>rect</code> has width
	* or height less than or equal to zero, or computing either
	* <code>rect.x + rect.width</code> or
	* <code>rect.y + rect.height</code> results in integer
	* overflow
	* @throws NullPointerException if <code>rect</code> is null
	*/
	public WritableRaster createCompatibleWritableRaster(Rectangle rect) {
	if (rect == null) {
	throw new NullPointerException("Rect cannot be null");
	}
	return createCompatibleWritableRaster(rect.x, rect.y,
	rect.width, rect.height);
	}

	/**
	* Create a compatible WritableRaster with the specified
	* location (minX, minY) and size (width, height), a
	* new SampleModel, and a new initialized DataBuffer.
	* @param x the X coordinate of the upper-left corner of
	* the <code>WritableRaster</code>
	* @param y the Y coordinate of the upper-left corner of
	* the <code>WritableRaster</code>
	* @param w the specified width of the <code>WritableRaster</code>
	* @param h the specified height of the <code>WritableRaster</code>
	* @return a compatible <code>WritableRaster</code> with the specified
	* size and location and a new sample model and data buffer.
	* @throws RasterFormatException if <code>w</code> or <code>h</code>
	* is less than or equal to zero, or computing either
	* <code>x + w</code> or
	* <code>y + h</code> results in integer
	* overflow
	*/
	public WritableRaster createCompatibleWritableRaster(int x, int y,
	int w, int h) {
	WritableRaster ret = createCompatibleWritableRaster(w, h);
	return ret.createWritableChild(0,0,w,h,x,y,null);
	}

	/**
	* Create a Raster with the same size, SampleModel and DataBuffer
	* as this one, but with a different location. The new Raster
	* will possess a reference to the current Raster, accessible
	* through its getParent() method.
	*
	* @param childMinX the X coordinate of the upper-left
	* corner of the new <code>Raster</code>
	* @param childMinY the Y coordinate of the upper-left
	* corner of the new <code>Raster</code>
	* @return a new <code>Raster</code> with the same size, SampleModel,
	* and DataBuffer as this <code>Raster</code>, but with the
	* specified location.
	* @throws RasterFormatException if computing either
	* <code>childMinX + this.getWidth()</code> or
	* <code>childMinY + this.getHeight()</code> results in integer
	* overflow
	*/
	public Raster createTranslatedChild(int childMinX, int childMinY) {
	return createChild(minX,minY,width,height,
	childMinX,childMinY,null);
	}

	/**
	* Returns a new Raster which shares all or part of this Raster's
	* DataBuffer. The new Raster will possess a reference to the
	* current Raster, accessible through its getParent() method.
	*
	* <p> The parentX, parentY, width and height parameters
	* form a Rectangle in this Raster's coordinate space,
	* indicating the area of pixels to be shared. An error will
	* be thrown if this Rectangle is not contained with the bounds
	* of the current Raster.
	*
	* <p> The new Raster may additionally be translated to a
	* different coordinate system for the plane than that used by the current
	* Raster. The childMinX and childMinY parameters give the new
	* (x, y) coordinate of the upper-left pixel of the returned
	* Raster; the coordinate (childMinX, childMinY) in the new Raster
	* will map to the same pixel as the coordinate (parentX, parentY)
	* in the current Raster.
	*
	* <p> The new Raster may be defined to contain only a subset of
	* the bands of the current Raster, possibly reordered, by means
	* of the bandList parameter. If bandList is null, it is taken to
	* include all of the bands of the current Raster in their current
	* order.
	*
	* <p> To create a new Raster that contains a subregion of the current
	* Raster, but shares its coordinate system and bands,
	* this method should be called with childMinX equal to parentX,
	* childMinY equal to parentY, and bandList equal to null.
	*
	* @param parentX The X coordinate of the upper-left corner
	* in this Raster's coordinates
	* @param parentY The Y coordinate of the upper-left corner
	* in this Raster's coordinates
	* @param width Width of the region starting at (parentX, parentY)
	* @param height Height of the region starting at (parentX, parentY).
	* @param childMinX The X coordinate of the upper-left corner
	* of the returned Raster
	* @param childMinY The Y coordinate of the upper-left corner
	* of the returned Raster
	* @param bandList Array of band indices, or null to use all bands
	* @return a new <code>Raster</code>.
	* @exception RasterFormatException if the specified subregion is outside
	* of the raster bounds.
	* @throws RasterFormatException if <code>width</code> or
	* <code>height</code>
	* is less than or equal to zero, or computing any of
	* <code>parentX + width</code>, <code>parentY + height</code>,
	* <code>childMinX + width</code>, or
	* <code>childMinY + height</code> results in integer
	* overflow
	*/
	public Raster createChild(int parentX, int parentY,
	int width, int height,
	int childMinX, int childMinY,
	int bandList[]) {
	if (parentX < this.minX) {
	throw new RasterFormatException("parentX lies outside raster");
	}
	if (parentY < this.minY) {
	throw new RasterFormatException("parentY lies outside raster");
	}
	if ((parentX + width < parentX) \|\|
	(parentX + width > this.width + this.minX)) {
	throw new RasterFormatException("(parentX + width) is outside raster");
	}
	if ((parentY + height < parentY) \|\|
	(parentY + height > this.height + this.minY)) {
	throw new RasterFormatException("(parentY + height) is outside raster");
	}

	SampleModel subSampleModel;
	// Note: the SampleModel for the child Raster should have the same
	// width and height as that for the parent, since it represents
	// the physical layout of the pixel data. The child Raster's width
	// and height represent a "virtual" view of the pixel data, so
	// they may be different than those of the SampleModel.
	if (bandList == null) {
	subSampleModel = sampleModel;
	} else {
	subSampleModel = sampleModel.createSubsetSampleModel(bandList);
	}

	int deltaX = childMinX - parentX;
	int deltaY = childMinY - parentY;

	return new Raster(subSampleModel, getDataBuffer(),
	new Rectangle(childMinX, childMinY, width, height),
	new Point(sampleModelTranslateX + deltaX,
	sampleModelTranslateY + deltaY), this);
	}

	/**
	* Returns the bounding Rectangle of this Raster. This function returns
	* the same information as getMinX/MinY/Width/Height.
	* @return the bounding box of this <code>Raster</code>.
	*/
	public Rectangle getBounds() {
	return new Rectangle(minX, minY, width, height);
	}

	/** Returns the minimum valid X coordinate of the Raster.
	* @return the minimum x coordinate of this <code>Raster</code>.
	*/
	final public int getMinX() {
	return minX;
	}

	/** Returns the minimum valid Y coordinate of the Raster.
	* @return the minimum y coordinate of this <code>Raster</code>.
	*/
	final public int getMinY() {
	return minY;
	}

	/** Returns the width in pixels of the Raster.
	* @return the width of this <code>Raster</code>.
	*/
	final public int getWidth() {
	return width;
	}

	/** Returns the height in pixels of the Raster.
	* @return the height of this <code>Raster</code>.
	*/
	final public int getHeight() {
	return height;
	}

	/** Returns the number of bands (samples per pixel) in this Raster.
	* @return the number of bands of this <code>Raster</code>.
	*/
	final public int getNumBands() {
	return numBands;
	}

	/**
	* Returns the number of data elements needed to transfer one pixel
	* via the getDataElements and setDataElements methods. When pixels
	* are transferred via these methods, they may be transferred in a
	* packed or unpacked format, depending on the implementation of the
	* underlying SampleModel. Using these methods, pixels are transferred
	* as an array of getNumDataElements() elements of a primitive type given
	* by getTransferType(). The TransferType may or may not be the same
	* as the storage data type of the DataBuffer.
	* @return the number of data elements.
	*/
	final public int getNumDataElements() {
	return sampleModel.getNumDataElements();
	}

	/**
	* Returns the TransferType used to transfer pixels via the
	* getDataElements and setDataElements methods. When pixels
	* are transferred via these methods, they may be transferred in a
	* packed or unpacked format, depending on the implementation of the
	* underlying SampleModel. Using these methods, pixels are transferred
	* as an array of getNumDataElements() elements of a primitive type given
	* by getTransferType(). The TransferType may or may not be the same
	* as the storage data type of the DataBuffer. The TransferType will
	* be one of the types defined in DataBuffer.
	* @return this transfer type.
	*/
	final public int getTransferType() {
	return sampleModel.getTransferType();
	}

	/** Returns the DataBuffer associated with this Raster.
	* @return the <code>DataBuffer</code> of this <code>Raster</code>.
	*/
	public DataBuffer getDataBuffer() {
	return dataBuffer;
	}

	/** Returns the SampleModel that describes the layout of the image data.
	* @return the <code>SampleModel</code> of this <code>Raster</code>.
	*/
	public SampleModel getSampleModel() {
	return sampleModel;
	}

	/**
	* Returns data for a single pixel in a primitive array of type
	* TransferType. For image data supported by the Java 2D(tm) API,
	* this will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
	* DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
	* or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format,
	* thus increasing efficiency for data transfers.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* A ClassCastException will be thrown if the input object is non null
	* and references anything other than an array of TransferType.
	* @see java.awt.image.SampleModel#getDataElements(int, int, Object, DataBuffer)
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param outData An object reference to an array of type defined by
	* getTransferType() and length getNumDataElements().
	* If null, an array of appropriate type and size will be
	* allocated
	* @return An object reference to an array of type defined by
	* getTransferType() with the requested pixel data.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if outData is too small to hold the output.
	*/
	public Object getDataElements(int x, int y, Object outData) {
	return sampleModel.getDataElements(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	outData, dataBuffer);
	}

	/**
	* Returns the pixel data for the specified rectangle of pixels in a
	* primitive array of type TransferType.
	* For image data supported by the Java 2D API, this
	* will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
	* DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT,
	* or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format,
	* thus increasing efficiency for data transfers.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* A ClassCastException will be thrown if the input object is non null
	* and references anything other than an array of TransferType.
	* @see java.awt.image.SampleModel#getDataElements(int, int, int, int, Object, DataBuffer)
	* @param x The X coordinate of the upper-left pixel location
	* @param y The Y coordinate of the upper-left pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param outData An object reference to an array of type defined by
	* getTransferType() and length whgetNumDataElements().
	* If null, an array of appropriate type and size will be
	* allocated.
	* @return An object reference to an array of type defined by
	* getTransferType() with the requested pixel data.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if outData is too small to hold the output.
	*/
	public Object getDataElements(int x, int y, int w, int h, Object outData) {
	return sampleModel.getDataElements(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	w, h, outData, dataBuffer);
	}

	/**
	* Returns the samples in an array of int for the specified pixel.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param iArray An optionally preallocated int array
	* @return the samples for the specified pixel.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if iArray is too small to hold the output.
	*/
	public int[] getPixel(int x, int y, int iArray[]) {
	return sampleModel.getPixel(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	iArray, dataBuffer);
	}

	/**
	* Returns the samples in an array of float for the
	* specified pixel.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param fArray An optionally preallocated float array
	* @return the samples for the specified pixel.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if fArray is too small to hold the output.
	*/
	public float[] getPixel(int x, int y, float fArray[]) {
	return sampleModel.getPixel(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	fArray, dataBuffer);
	}

	/**
	* Returns the samples in an array of double for the specified pixel.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param dArray An optionally preallocated double array
	* @return the samples for the specified pixel.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if dArray is too small to hold the output.
	*/
	public double[] getPixel(int x, int y, double dArray[]) {
	return sampleModel.getPixel(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	dArray, dataBuffer);
	}

	/**
	* Returns an int array containing all samples for a rectangle of pixels,
	* one sample per array element.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the upper-left pixel location
	* @param y The Y coordinate of the upper-left pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param iArray An optionally pre-allocated int array
	* @return the samples for the specified rectangle of pixels.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if iArray is too small to hold the output.
	*/
	public int[] getPixels(int x, int y, int w, int h, int iArray[]) {
	return sampleModel.getPixels(x - sampleModelTranslateX,
	y - sampleModelTranslateY, w, h,
	iArray, dataBuffer);
	}

	/**
	* Returns a float array containing all samples for a rectangle of pixels,
	* one sample per array element.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param fArray An optionally pre-allocated float array
	* @return the samples for the specified rectangle of pixels.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if fArray is too small to hold the output.
	*/
	public float[] getPixels(int x, int y, int w, int h,
	float fArray[]) {
	return sampleModel.getPixels(x - sampleModelTranslateX,
	y - sampleModelTranslateY, w, h,
	fArray, dataBuffer);
	}

	/**
	* Returns a double array containing all samples for a rectangle of pixels,
	* one sample per array element.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the upper-left pixel location
	* @param y The Y coordinate of the upper-left pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param dArray An optionally pre-allocated double array
	* @return the samples for the specified rectangle of pixels.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates are not
	* in bounds, or if dArray is too small to hold the output.
	*/
	public double[] getPixels(int x, int y, int w, int h,
	double dArray[]) {
	return sampleModel.getPixels(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	w, h, dArray, dataBuffer);
	}


	/**
	* Returns the sample in a specified band for the pixel located
	* at (x,y) as an int.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param b The band to return
	* @return the sample in the specified band for the pixel at the
	* specified coordinate.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates or
	* the band index are not in bounds.
	*/
	public int getSample(int x, int y, int b) {
	return sampleModel.getSample(x - sampleModelTranslateX,
	y - sampleModelTranslateY, b,
	dataBuffer);
	}

	/**
	* Returns the sample in a specified band
	* for the pixel located at (x,y) as a float.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param b The band to return
	* @return the sample in the specified band for the pixel at the
	* specified coordinate.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates or
	* the band index are not in bounds.
	*/
	public float getSampleFloat(int x, int y, int b) {
	return sampleModel.getSampleFloat(x - sampleModelTranslateX,
	y - sampleModelTranslateY, b,
	dataBuffer);
	}

	/**
	* Returns the sample in a specified band
	* for a pixel located at (x,y) as a double.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the pixel location
	* @param y The Y coordinate of the pixel location
	* @param b The band to return
	* @return the sample in the specified band for the pixel at the
	* specified coordinate.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates or
	* the band index are not in bounds.
	*/
	public double getSampleDouble(int x, int y, int b) {
	return sampleModel.getSampleDouble(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	b, dataBuffer);
	}

	/**
	* Returns the samples for a specified band for the specified rectangle
	* of pixels in an int array, one sample per array element.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the upper-left pixel location
	* @param y The Y coordinate of the upper-left pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param b The band to return
	* @param iArray An optionally pre-allocated int array
	* @return the samples for the specified band for the specified
	* rectangle of pixels.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates or
	* the band index are not in bounds, or if iArray is too small to
	* hold the output.
	*/
	public int[] getSamples(int x, int y, int w, int h, int b,
	int iArray[]) {
	return sampleModel.getSamples(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	w, h, b, iArray,
	dataBuffer);
	}

	/**
	* Returns the samples for a specified band for the specified rectangle
	* of pixels in a float array, one sample per array element.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the upper-left pixel location
	* @param y The Y coordinate of the upper-left pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param b The band to return
	* @param fArray An optionally pre-allocated float array
	* @return the samples for the specified band for the specified
	* rectangle of pixels.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates or
	* the band index are not in bounds, or if fArray is too small to
	* hold the output.
	*/
	public float[] getSamples(int x, int y, int w, int h, int b,
	float fArray[]) {
	return sampleModel.getSamples(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	w, h, b, fArray, dataBuffer);
	}

	/**
	* Returns the samples for a specified band for a specified rectangle
	* of pixels in a double array, one sample per array element.
	* An ArrayIndexOutOfBoundsException may be thrown
	* if the coordinates are not in bounds. However, explicit bounds
	* checking is not guaranteed.
	* @param x The X coordinate of the upper-left pixel location
	* @param y The Y coordinate of the upper-left pixel location
	* @param w Width of the pixel rectangle
	* @param h Height of the pixel rectangle
	* @param b The band to return
	* @param dArray An optionally pre-allocated double array
	* @return the samples for the specified band for the specified
	* rectangle of pixels.
	*
	* @throws ArrayIndexOutOfBoundsException if the coordinates or
	* the band index are not in bounds, or if dArray is too small to
	* hold the output.
	*/
	public double[] getSamples(int x, int y, int w, int h, int b,
	double dArray[]) {
	return sampleModel.getSamples(x - sampleModelTranslateX,
	y - sampleModelTranslateY,
	w, h, b, dArray, dataBuffer);
	}

	}

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