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/*
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* Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.awt.image;
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import java.awt.image.Raster;
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import java.awt.image.WritableRaster;
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import java.awt.image.RasterFormatException;
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import java.awt.image.SampleModel;
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import java.awt.image.SinglePixelPackedSampleModel;
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import java.awt.image.DataBuffer;
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import java.awt.image.DataBufferInt;
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import java.awt.Rectangle;
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import java.awt.Point;
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/**
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* This class defines a Raster with pixels consisting of one or more 32-bit
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* data elements stored in close proximity to each other in a integer array.
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* The bit precision per data element is that
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* of the data type (that is, the bit precision for this raster is 32).
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* There is only one pixel stride and one scanline stride for all
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* bands. For a given pixel, all samples fit in N data elements and these
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* N data elements hold samples for only one pixel. This type of Raster
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* can be used with a PackedColorModel.
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* <p>
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* For example, if there is only one data element per pixel, a
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* SinglePixelPackedSampleModel can be used to represent multiple
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* bands with a PackedColorModel (including a DirectColorModel) for
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* color interpretation.
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*
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*/
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public class IntegerInterleavedRaster extends IntegerComponentRaster {
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/** A cached copy of minX + width for use in bounds checks. */
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private int maxX;
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/** A cached copy of minY + height for use in bounds checks. */
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private int maxY;
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/**
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* Constructs a IntegerInterleavedRaster with the given SampleModel.
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* The Raster's upper left corner is origin and it is the same
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* size as the SampleModel. A DataBuffer large enough to describe the
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* Raster is automatically created. SampleModel must be of type
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* SinglePixelPackedSampleModel.
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* @param sampleModel The SampleModel that specifies the layout.
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* @param origin The Point that specified the origin.
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*/
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public IntegerInterleavedRaster(SampleModel sampleModel,
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Point origin) {
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this(sampleModel,
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sampleModel.createDataBuffer(),
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new Rectangle(origin.x,
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origin.y,
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sampleModel.getWidth(),
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sampleModel.getHeight()),
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origin,
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null);
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}
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/**
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* Constructs a IntegerInterleavedRaster with the given SampleModel
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* and DataBuffer. The Raster's upper left corner is origin and
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* it is the same sizes the SampleModel. The DataBuffer is not
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* initialized and must be a DataBufferInt compatible with SampleModel.
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* SampleModel must be of type SinglePixelPackedSampleModel.
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* @param sampleModel The SampleModel that specifies the layout.
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* @param dataBuffer The DataBufferInt that contains the image data.
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* @param origin The Point that specifies the origin.
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*/
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public IntegerInterleavedRaster(SampleModel sampleModel,
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DataBuffer dataBuffer,
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Point origin) {
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this(sampleModel,
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dataBuffer,
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new Rectangle(origin.x,
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origin.y,
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sampleModel.getWidth(),
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sampleModel.getHeight()),
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origin,
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null);
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}
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/**
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* Constructs a IntegerInterleavedRaster with the given SampleModel,
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* DataBuffer, and parent. DataBuffer must be a DataBufferInt and
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* SampleModel must be of type SinglePixelPackedSampleModel.
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* When translated into the base Raster's
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* coordinate system, aRegion must be contained by the base Raster.
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* Origin is the coodinate in the new Raster's coordinate system of
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* the origin of the base Raster. (The base Raster is the Raster's
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* ancestor which has no parent.)
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*
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* Note that this constructor should generally be called by other
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* constructors or create methods, it should not be used directly.
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* @param sampleModel The SampleModel that specifies the layout.
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* @param dataBuffer The DataBufferInt that contains the image data.
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* @param aRegion The Rectangle that specifies the image area.
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* @param origin The Point that specifies the origin.
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* @param parent The parent (if any) of this raster.
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*/
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public IntegerInterleavedRaster(SampleModel sampleModel,
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DataBuffer dataBuffer,
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Rectangle aRegion,
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Point origin,
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IntegerInterleavedRaster parent){
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super(sampleModel,dataBuffer,aRegion,origin,parent);
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this.maxX = minX + width;
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this.maxY = minY + height;
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if (!(dataBuffer instanceof DataBufferInt)) {
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throw new RasterFormatException("IntegerInterleavedRasters must have" +
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"integer DataBuffers");
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}
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DataBufferInt dbi = (DataBufferInt)dataBuffer;
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this.data = stealData(dbi, 0);
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if (sampleModel instanceof SinglePixelPackedSampleModel) {
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SinglePixelPackedSampleModel sppsm =
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(SinglePixelPackedSampleModel)sampleModel;
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this.scanlineStride = sppsm.getScanlineStride();
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this.pixelStride = 1;
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this.dataOffsets = new int[1];
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this.dataOffsets[0] = dbi.getOffset();
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this.bandOffset = this.dataOffsets[0];
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int xOffset = aRegion.x - origin.x;
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int yOffset = aRegion.y - origin.y;
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dataOffsets[0] += xOffset+yOffset*scanlineStride;
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this.numDataElems = sppsm.getNumDataElements();
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} else {
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throw new RasterFormatException("IntegerInterleavedRasters must have"+
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" SinglePixelPackedSampleModel");
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}
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verify(false);
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}
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/**
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* Returns a copy of the data offsets array. For each band the data offset
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* is the index into the band's data array, of the first sample of the
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* band.
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*/
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public int[] getDataOffsets() {
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return (int[]) dataOffsets.clone();
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}
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/**
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* Returns data offset for the specified band. The data offset
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* is the index into the data array in which the first sample
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* of the first scanline is stored.
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*/
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public int getDataOffset(int band) {
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return dataOffsets[band];
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}
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/**
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* Returns the scanline stride -- the number of data array elements between
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* a given sample and the sample in the same column of the next row.
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*/
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public int getScanlineStride() {
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return scanlineStride;
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}
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/**
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* Returns pixel stride -- the number of data array elements between two
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* samples for the same band on the same scanline.
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*/
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public int getPixelStride() {
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return pixelStride;
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}
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/**
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* Returns a reference to the data array.
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*/
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public int[] getDataStorage() {
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return data;
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}
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/**
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* Returns the data elements for all bands at the specified
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* location.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinate is out of bounds.
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* A ClassCastException will be thrown if the input object is non null
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* and references anything other than an array of transferType.
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* @param x The X coordinate of the pixel location.
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* @param y The Y coordinate of the pixel location.
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* @param outData An object reference to an array of type defined by
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* getTransferType() and length getNumDataElements().
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* If null an array of appropriate type and size will be
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* allocated.
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* @return An object reference to an array of type defined by
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* getTransferType() with the request pixel data.
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*/
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public Object getDataElements(int x, int y, Object obj) {
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if ((x < this.minX) || (y < this.minY) ||
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(x >= this.maxX) || (y >= this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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int outData[];
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if (obj == null) {
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outData = new int[1];
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} else {
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outData = (int[])obj;
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}
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int off = (y-minY)*scanlineStride + (x-minX) + dataOffsets[0];
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outData[0] = data[off];
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return outData;
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}
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/**
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* Returns an array of data elements from the specified rectangular
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* region.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinates are out of bounds.
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* A ClassCastException will be thrown if the input object is non null
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* and references anything other than an array of transferType.
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<pre>
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* int[] bandData = (int[])raster.getDataElements(x, y, w, h, null);
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* int numDataElements = raster.getNumDataElements();
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* int[] pixel = new int[numDataElements];
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* // To find a data element at location (x2, y2)
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* System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements,
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* pixel, 0, numDataElements);
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* </pre>
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* @param x The X coordinate of the upper left pixel location.
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* @param y The Y coordinate of the upper left pixel location.
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* @param width Width of the pixel rectangle.
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* @param height Height of the pixel rectangle.
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* @param outData An object reference to an array of type defined by
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* getTransferType() and length w*h*getNumDataElements().
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* If null an array of appropriate type and size will be
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* allocated.
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* @return An object reference to an array of type defined by
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* getTransferType() with the request pixel data.
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*/
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public Object getDataElements(int x, int y, int w, int h, Object obj) {
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if ((x < this.minX) || (y < this.minY) ||
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(x + w > this.maxX) || (y + h > this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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int outData[];
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if (obj instanceof int[]) {
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outData = (int[])obj;
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} else {
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outData = new int[w*h];
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}
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int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[0];
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int off = 0;
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for (int ystart = 0; ystart < h; ystart++) {
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System.arraycopy(data, yoff, outData, off, w);
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off += w;
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yoff += scanlineStride;
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}
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return outData;
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}
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/**
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* Stores the data elements for all bands at the specified location.
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* An ArrayIndexOutOfBounds exception will be thrown at runtime
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* if the pixel coordinate is out of bounds.
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* A ClassCastException will be thrown if the input object is non null
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* and references anything other than an array of transferType.
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* @param x The X coordinate of the pixel location.
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* @param y The Y coordinate of the pixel location.
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* @param inData An object reference to an array of type defined by
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* getTransferType() and length getNumDataElements()
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* containing the pixel data to place at x,y.
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*/
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public void setDataElements(int x, int y, Object obj) {
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if ((x < this.minX) || (y < this.minY) ||
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(x >= this.maxX) || (y >= this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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int inData[] = (int[])obj;
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int off = (y-minY)*scanlineStride + (x-minX) + dataOffsets[0];
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data[off] = inData[0];
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markDirty();
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}
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/**
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* Stores the Raster data at the specified location.
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* The transferType of the inputRaster must match this raster.
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* An ArrayIndexOutOfBoundsException will be thrown at runtime
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* if the pixel coordinates are out of bounds.
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* @param x The X coordinate of the pixel location.
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* @param y The Y coordinate of the pixel location.
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* @param inRaster Raster of data to place at x,y location.
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*/
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public void setDataElements(int x, int y, Raster inRaster) {
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int dstOffX = x + inRaster.getMinX();
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int dstOffY = y + inRaster.getMinY();
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int width = inRaster.getWidth();
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int height = inRaster.getHeight();
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if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
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(dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
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throw new ArrayIndexOutOfBoundsException
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("Coordinate out of bounds!");
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}
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setDataElements(dstOffX, dstOffY, width, height, inRaster);
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}
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/**
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* Stores the Raster data at the specified location.
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* @param dstX The absolute X coordinate of the destination pixel
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* that will receive a copy of the upper-left pixel of the
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* inRaster
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* @param dstY The absolute Y coordinate of the destination pixel
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* that will receive a copy of the upper-left pixel of the
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* inRaster
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* @param width The number of pixels to store horizontally
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* @param height The number of pixels to store vertically
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* @param inRaster Raster of data to place at x,y location.
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*/
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private void setDataElements(int dstX, int dstY,
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int width, int height,
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Raster inRaster) {
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// Assume bounds checking has been performed previously
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if (width <= 0 || height <= 0) {
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return;
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}
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// Write inRaster (minX, minY) to (dstX, dstY)
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int srcOffX = inRaster.getMinX();
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int srcOffY = inRaster.getMinY();
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int tdata[] = null;
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if (inRaster instanceof IntegerInterleavedRaster) {
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IntegerInterleavedRaster ict = (IntegerInterleavedRaster) inRaster;
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// Extract the raster parameters
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tdata = ict.getDataStorage();
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int tss = ict.getScanlineStride();
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int toff = ict.getDataOffset(0);
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int srcOffset = toff;
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int dstOffset = dataOffsets[0]+(dstY-minY)*scanlineStride+
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(dstX-minX);
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// Fastest case. We can copy scanlines
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// Loop through all of the scanlines and copy the data
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for (int startY=0; startY < height; startY++) {
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System.arraycopy(tdata, srcOffset, data, dstOffset, width);
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srcOffset += tss;
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dstOffset += scanlineStride;
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}
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markDirty();
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return;
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}
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Object odata = null;
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for (int startY=0; startY < height; startY++) {
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// Grab one scanline at a time
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odata = inRaster.getDataElements(srcOffX, srcOffY+startY,
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width, 1, odata);
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setDataElements(dstX, dstY+startY, width, 1, odata);
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}
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}
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/**
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397 |
* Stores an array of data elements into the specified rectangular
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* region.
|
|
399 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime
|
|
400 |
* if the pixel coordinates are out of bounds.
|
|
401 |
* A ClassCastException will be thrown if the input object is non null
|
|
402 |
* and references anything other than an array of transferType.
|
|
403 |
* The data elements in the
|
|
404 |
* data array are assumed to be packed. That is, a data element
|
|
405 |
* for the nth band at location (x2, y2) would be found at:
|
|
406 |
* <pre>
|
|
407 |
* inData[((y2-y)*w + (x2-x))*numDataElements + n]
|
|
408 |
* </pre>
|
|
409 |
* @param x The X coordinate of the upper left pixel location.
|
|
410 |
* @param y The Y coordinate of the upper left pixel location.
|
|
411 |
* @param w Width of the pixel rectangle.
|
|
412 |
* @param h Height of the pixel rectangle.
|
|
413 |
* @param inData An object reference to an array of type defined by
|
|
414 |
* getTransferType() and length w*h*getNumDataElements()
|
|
415 |
* containing the pixel data to place between x,y and
|
|
416 |
* x+h, y+h.
|
|
417 |
*/
|
|
418 |
public void setDataElements(int x, int y, int w, int h, Object obj) {
|
|
419 |
if ((x < this.minX) || (y < this.minY) ||
|
|
420 |
(x + w > this.maxX) || (y + h > this.maxY)) {
|
|
421 |
throw new ArrayIndexOutOfBoundsException
|
|
422 |
("Coordinate out of bounds!");
|
|
423 |
}
|
|
424 |
int inData[] = (int[])obj;
|
|
425 |
int yoff = (y-minY)*scanlineStride + (x-minX) + dataOffsets[0];
|
|
426 |
int off = 0;
|
|
427 |
|
|
428 |
for (int ystart = 0; ystart < h; ystart++) {
|
|
429 |
System.arraycopy(inData, off, data, yoff, w);
|
|
430 |
off += w;
|
|
431 |
yoff += scanlineStride;
|
|
432 |
}
|
|
433 |
|
|
434 |
markDirty();
|
|
435 |
}
|
|
436 |
|
|
437 |
/**
|
|
438 |
* Creates a subraster given a region of the raster. The x and y
|
|
439 |
* coordinates specify the horizontal and vertical offsets
|
|
440 |
* from the upper-left corner of this raster to the upper-left corner
|
|
441 |
* of the subraster. A subset of the bands of the parent Raster may
|
|
442 |
* be specified. If this is null, then all the bands are present in the
|
|
443 |
* subRaster. A translation to the subRaster may also be specified.
|
|
444 |
* Note that the subraster will reference the same
|
|
445 |
* DataBuffer as the parent raster, but using different offsets.
|
|
446 |
* @param x X offset.
|
|
447 |
* @param y Y offset.
|
|
448 |
* @param width Width (in pixels) of the subraster.
|
|
449 |
* @param height Height (in pixels) of the subraster.
|
|
450 |
* @param x0 Translated X origin of the subraster.
|
|
451 |
* @param y0 Translated Y origin of the subraster.
|
|
452 |
* @param bandList Array of band indices.
|
|
453 |
* @exception RasterFormatException
|
|
454 |
* if the specified bounding box is outside of the parent raster.
|
|
455 |
*/
|
|
456 |
public WritableRaster createWritableChild (int x, int y,
|
|
457 |
int width, int height,
|
|
458 |
int x0, int y0,
|
|
459 |
int bandList[]) {
|
|
460 |
if (x < this.minX) {
|
|
461 |
throw new RasterFormatException("x lies outside raster");
|
|
462 |
}
|
|
463 |
if (y < this.minY) {
|
|
464 |
throw new RasterFormatException("y lies outside raster");
|
|
465 |
}
|
|
466 |
if ((x+width < x) || (x+width > this.minX + this.width)) {
|
|
467 |
throw new RasterFormatException("(x + width) is outside raster");
|
|
468 |
}
|
|
469 |
if ((y+height < y) || (y+height > this.minY + this.height)) {
|
|
470 |
throw new RasterFormatException("(y + height) is outside raster");
|
|
471 |
}
|
|
472 |
|
|
473 |
SampleModel sm;
|
|
474 |
|
|
475 |
if (bandList != null)
|
|
476 |
sm = sampleModel.createSubsetSampleModel(bandList);
|
|
477 |
else
|
|
478 |
sm = sampleModel;
|
|
479 |
|
|
480 |
int deltaX = x0 - x;
|
|
481 |
int deltaY = y0 - y;
|
|
482 |
|
|
483 |
return new IntegerInterleavedRaster(sm,
|
|
484 |
dataBuffer,
|
|
485 |
new Rectangle(x0,y0,width,height),
|
|
486 |
new Point(sampleModelTranslateX+deltaX,
|
|
487 |
sampleModelTranslateY+deltaY),
|
|
488 |
this);
|
|
489 |
}
|
|
490 |
|
|
491 |
|
|
492 |
/**
|
|
493 |
* Creates a subraster given a region of the raster. The x and y
|
|
494 |
* coordinates specify the horizontal and vertical offsets
|
|
495 |
* from the upper-left corner of this raster to the upper-left corner
|
|
496 |
* of the subraster. A subset of the bands of the parent raster may
|
|
497 |
* be specified. If this is null, then all the bands are present in the
|
|
498 |
* subRaster. Note that the subraster will reference the same
|
|
499 |
* DataBuffer as the parent raster, but using different offsets.
|
|
500 |
* @param x X offset.
|
|
501 |
* @param y Y offset.
|
|
502 |
* @param width Width (in pixels) of the subraster.
|
|
503 |
* @param height Height (in pixels) of the subraster.
|
|
504 |
* @param x0 Translated X origin of the subRaster.
|
|
505 |
* @param y0 Translated Y origin of the subRaster.
|
|
506 |
* @param bandList Array of band indices.
|
|
507 |
* @exception RasterFormatException
|
|
508 |
* if the specified bounding box is outside of the parent raster.
|
|
509 |
*/
|
|
510 |
public Raster createChild (int x, int y,
|
|
511 |
int width, int height,
|
|
512 |
int x0, int y0,
|
|
513 |
int bandList[]) {
|
|
514 |
return createWritableChild(x, y, width, height, x0, y0, bandList);
|
|
515 |
}
|
|
516 |
|
|
517 |
|
|
518 |
/**
|
|
519 |
* Creates a raster with the same band layout but using a different
|
|
520 |
* width and height, and with new zeroed data arrays.
|
|
521 |
*/
|
|
522 |
public WritableRaster createCompatibleWritableRaster(int w, int h) {
|
|
523 |
if (w <= 0 || h <=0) {
|
|
524 |
throw new RasterFormatException("negative "+
|
|
525 |
((w <= 0) ? "width" : "height"));
|
|
526 |
}
|
|
527 |
|
|
528 |
SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);
|
|
529 |
|
|
530 |
return new IntegerInterleavedRaster(sm, new Point(0,0));
|
|
531 |
}
|
|
532 |
|
|
533 |
/**
|
|
534 |
* Creates a raster with the same data layout and the same
|
|
535 |
* width and height, and with new zeroed data arrays. If
|
|
536 |
* the raster is a subraster, this will call
|
|
537 |
* createCompatibleRaster(width, height).
|
|
538 |
*/
|
|
539 |
public WritableRaster createCompatibleWritableRaster() {
|
|
540 |
return createCompatibleWritableRaster(width,height);
|
|
541 |
}
|
|
542 |
|
|
543 |
/**
|
|
544 |
* Verify that the layout parameters are consistent with
|
|
545 |
* the data. If strictCheck
|
|
546 |
* is false, this method will check for ArrayIndexOutOfBounds conditions. If
|
|
547 |
* strictCheck is true, this method will check for additional error
|
|
548 |
* conditions such as line wraparound (width of a line greater than
|
|
549 |
* the scanline stride).
|
|
550 |
* @return String Error string, if the layout is incompatible with
|
|
551 |
* the data. Otherwise returns null.
|
|
552 |
*/
|
|
553 |
private void verify (boolean strictCheck) {
|
|
554 |
int maxSize = 0;
|
|
555 |
int size;
|
|
556 |
|
|
557 |
size = (height-1)*scanlineStride + (width-1) + dataOffsets[0];
|
|
558 |
if (size > maxSize) {
|
|
559 |
maxSize = size;
|
|
560 |
}
|
|
561 |
if (data.length < maxSize) {
|
|
562 |
throw new RasterFormatException("Data array too small (should be "+
|
|
563 |
maxSize
|
|
564 |
+" but is "+data.length+" )");
|
|
565 |
}
|
|
566 |
}
|
|
567 |
|
|
568 |
public String toString() {
|
|
569 |
return new String ("IntegerInterleavedRaster: width = "+width
|
|
570 |
+" height = " + height
|
|
571 |
+" #Bands = " + numBands
|
|
572 |
+" xOff = "+sampleModelTranslateX
|
|
573 |
+" yOff = "+sampleModelTranslateY
|
|
574 |
+" dataOffset[0] "+dataOffsets[0]);
|
|
575 |
}
|
|
576 |
|
|
577 |
// /**
|
|
578 |
// * For debugging... prints a region of a one-band IntegerInterleavedRaster
|
|
579 |
// */
|
|
580 |
// public void print(int x, int y, int w, int h) {
|
|
581 |
// // REMIND: Only works for 1 band!
|
|
582 |
// System.out.println(this);
|
|
583 |
// int offset = dataOffsets[0] + y*scanlineStride + x*pixelStride;
|
|
584 |
// int off;
|
|
585 |
// for (int yoff=0; yoff < h; yoff++, offset += scanlineStride) {
|
|
586 |
// off = offset;
|
|
587 |
// System.out.print("Line "+(sampleModelTranslateY+y+yoff)+": ");
|
|
588 |
// for (int xoff = 0; xoff < w; xoff++, off+= pixelStride) {
|
|
589 |
// System.out.print(Integer.toHexString(data[off])+" ");
|
|
590 |
// }
|
|
591 |
// System.out.println("");
|
|
592 |
// }
|
|
593 |
// }
|
|
594 |
|
|
595 |
}
|