下面列出了怎么用java.awt.image.SampleModel的API类实例代码及写法，或者点击链接到github查看源代码。
public static int getElementSize(SampleModel sm) {
int elementSize = DataBuffer.getDataTypeSize(sm.getDataType());
if (sm instanceof MultiPixelPackedSampleModel) {
MultiPixelPackedSampleModel mppsm =
(MultiPixelPackedSampleModel)sm;
return mppsm.getSampleSize(0) * mppsm.getNumBands();
} else if (sm instanceof ComponentSampleModel) {
return sm.getNumBands() * elementSize;
} else if (sm instanceof SinglePixelPackedSampleModel) {
return elementSize;
}
return elementSize * sm.getNumBands();
}
public static long getBandSize(SampleModel sm) {
int elementSize = DataBuffer.getDataTypeSize(sm.getDataType());
if (sm instanceof ComponentSampleModel) {
ComponentSampleModel csm = (ComponentSampleModel)sm;
int pixelStride = csm.getPixelStride();
int scanlineStride = csm.getScanlineStride();
long size = Math.min(pixelStride, scanlineStride);
if (pixelStride > 0)
size += pixelStride * (sm.getWidth() - 1);
if (scanlineStride > 0)
size += scanlineStride * (sm.getHeight() - 1);
return size * ((elementSize + 7) / 8);
} else
return getTileSize(sm);
}
public boolean canEncodeImage(ImageTypeSpecifier type) {
int dataType= type.getSampleModel().getDataType();
if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_INT)
return false;
SampleModel sm = type.getSampleModel();
int numBands = sm.getNumBands();
if (!(numBands == 1 || numBands == 3))
return false;
if (numBands == 1 && dataType != DataBuffer.TYPE_BYTE)
return false;
if (dataType > DataBuffer.TYPE_BYTE &&
!(sm instanceof SinglePixelPackedSampleModel))
return false;
return true;
}
public boolean canEncodeImage(ImageTypeSpecifier type) {
SampleModel sampleModel = type.getSampleModel();
// Find the maximum bit depth across all channels
int[] sampleSize = sampleModel.getSampleSize();
int bitDepth = sampleSize[0];
for (int i = 1; i < sampleSize.length; i++) {
if (sampleSize[i] > bitDepth) {
bitDepth = sampleSize[i];
}
}
// 4450894: Ensure bitDepth is between 1 and 8
if (bitDepth < 1 || bitDepth > 8) {
return false;
}
return true;
}
public boolean canEncodeImage(ImageTypeSpecifier type) {
int dataType= type.getSampleModel().getDataType();
if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_INT)
return false;
SampleModel sm = type.getSampleModel();
int numBands = sm.getNumBands();
if (!(numBands == 1 || numBands == 3))
return false;
if (numBands == 1 && dataType != DataBuffer.TYPE_BYTE)
return false;
if (dataType > DataBuffer.TYPE_BYTE &&
!(sm instanceof SinglePixelPackedSampleModel))
return false;
return true;
}
private static void makeImage() {
int scanLineBytes = WIDTH / PIXELS_IN_BYTE;
if ((WIDTH & (PIXELS_IN_BYTE - 1)) != 0) {
// Make sure all the pixels in a scan line fit
scanLineBytes += 1;
}
byte[] bits = new byte[scanLineBytes * HEIGHT];
DataBuffer dataBuf = new DataBufferByte(bits, bits.length, 0);
SampleModel sampleModel = new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE,
WIDTH, HEIGHT, BITS_PER_PIXEL);
WritableRaster raster = Raster.createWritableRaster(sampleModel, dataBuf, null);
IndexColorModel indexModel = new IndexColorModel(2, 2, RED, GREEN, BLUE);
BufferedImage bufImage = new BufferedImage(indexModel, raster,
indexModel.isAlphaPremultiplied(), null);
Graphics g = bufImage.getGraphics();
g.drawRect(0, 0, WIDTH - 1, HEIGHT - 1);
g.dispose();
}
public boolean canEncodeImage(ImageTypeSpecifier type) {
if (type == null) {
throw new IllegalArgumentException("type == null!");
}
SampleModel sm = type.getSampleModel();
ColorModel cm = type.getColorModel();
boolean canEncode = sm.getNumBands() == 1 &&
sm.getSampleSize(0) <= 8 &&
sm.getWidth() <= 65535 &&
sm.getHeight() <= 65535 &&
(cm == null || cm.getComponentSize()[0] <= 8);
if (canEncode) {
return true;
} else {
return PaletteBuilder.canCreatePalette(type);
}
}
public boolean canEncodeImage(ImageTypeSpecifier type) {
if (type == null) {
throw new IllegalArgumentException("type == null!");
}
SampleModel sm = type.getSampleModel();
ColorModel cm = type.getColorModel();
boolean canEncode = sm.getNumBands() == 1 &&
sm.getSampleSize(0) <= 8 &&
sm.getWidth() <= 65535 &&
sm.getHeight() <= 65535 &&
(cm == null || cm.getComponentSize()[0] <= 8);
if (canEncode) {
return true;
} else {
return PaletteBuilder.canCreatePalette(type);
}
}
/**
* Constructs a ByteBanded 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 a DataBufferShort compatible with SampleModel.
* SampleModel must be of type BandedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferByte that contains the image data.
* @param origin The Point that specifies the origin.
*/
public ByteBandedRaster(SampleModel sampleModel,
DataBufferByte dataBuffer,
Point origin)
{
this(sampleModel, dataBuffer,
new Rectangle(origin.x , origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin, null);
}
public SunWritableRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Rectangle aRegion,
Point sampleModelTranslate,
WritableRaster parent)
{
super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, parent);
theTrackable = stealTrackable(dataBuffer);
}
/**
* Creates a raster with the same band layout but using a different
* width and height, and with new zeroed data arrays.
*/
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 IntegerInterleavedRaster(sm, new Point(0,0));
}
/**
* Creates a Writable subRaster given a region of the Raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this Raster to the upper-left corner
* of the subRaster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subRaster will reference the same
* DataBuffer as the parent Raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
* @param height Height (in pixels) of the subraster.
* @param x0 Translated X origin of the subraster.
* @param y0 Translated Y origin of the subraster.
* @param bandList Array of band indices.
* @exception RasterFormatException
* if the specified bounding box is outside of the parent Raster.
*/
public WritableRaster createWritableChild(int x, int y,
int width, int height,
int x0, int y0,
int[] bandList) {
if (x < this.minX) {
throw new RasterFormatException("x lies outside the raster");
}
if (y < this.minY) {
throw new RasterFormatException("y lies outside the raster");
}
if ((x+width < x) || (x+width > this.minX + this.width)) {
throw new RasterFormatException("(x + width) is outside of Raster");
}
if ((y+height < y) || (y+height > this.minY + this.height)) {
throw new RasterFormatException("(y + height) is outside of Raster");
}
SampleModel sm;
if (bandList != null)
sm = sampleModel.createSubsetSampleModel(bandList);
else
sm = sampleModel;
int deltaX = x0 - x;
int deltaY = y0 - y;
return new ByteInterleavedRaster(sm,
dataBuffer,
new Rectangle(x0, y0, width, height),
new Point(sampleModelTranslateX+deltaX,
sampleModelTranslateY+deltaY),
this);
}
private boolean needToCreateIndex(RenderedImage image) {
SampleModel sampleModel = image.getSampleModel();
ColorModel colorModel = image.getColorModel();
return sampleModel.getNumBands() != 1 ||
sampleModel.getSampleSize()[0] > 8 ||
colorModel.getComponentSize()[0] > 8;
}
/**
* Creates a Raster with the same layout but using a different
* width and height, and with new zeroed data arrays.
*/
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 ByteInterleavedRaster(sm, new Point(0,0));
}
/**
* Check if the image format (and especially its color model) is
* properly handled by Audiveris.
*
* @throws ImageFormatException is the format is not supported
*/
private void checkImageFormat ()
throws ImageFormatException
{
ColorModel colorModel = image.getColorModel();
int pixelSize = colorModel.getPixelSize();
boolean hasAlpha = colorModel.hasAlpha();
logger.debug("{}", colorModel);
if (pixelSize == 1) {
///image = binaryToGray(image); // Only if rotation is needed!
implicitForeground = 0;
}
// Check nb of bands
SampleModel sampleModel = image.getSampleModel();
int numBands = sampleModel.getNumBands();
logger.debug("numBands={}", numBands);
if (numBands == 1) {
// Pixel gray value. Nothing to do
} else if ((numBands == 2) && hasAlpha) {
// Pixel + alpha
// Discard alpha (TODO: check if premultiplied!!!)
image = JAI.create("bandselect", image, new int[]{});
} else if ((numBands == 3) && !hasAlpha) {
// RGB
image = RGBToGray(image);
} else if ((numBands == 4) && hasAlpha) {
// RGB + alpha
image = RGBAToGray(image);
} else {
throw new ImageFormatException(
"Unsupported sample model numBands=" + numBands);
}
}
/**
* Creates a Writable subRaster given a region of the Raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this Raster to the upper-left corner
* of the subRaster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subRaster will reference the same
* DataBuffers as the parent Raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
* @param height Height (in pixels) of the subraster.
* @param x0 Translated X origin of the subraster.
* @param y0 Translated Y origin of the subraster.
* @param bandList Array of band indices.
* @exception RasterFormatException
* if the specified bounding box is outside of the parent Raster.
*/
public WritableRaster createWritableChild(int x, int y,
int width, int height,
int x0, int y0,
int[] bandList) {
if (x < this.minX) {
throw new RasterFormatException("x lies outside the raster");
}
if (y < this.minY) {
throw new RasterFormatException("y lies outside the raster");
}
if ((x+width < x) || (x+width > this.minX + this.width)) {
throw new RasterFormatException("(x + width) is outside of Raster");
}
if ((y+height < y) || (y+height > this.minY + this.height)) {
throw new RasterFormatException("(y + height) is outside of Raster");
}
SampleModel sm;
if (bandList != null)
sm = sampleModel.createSubsetSampleModel(bandList);
else
sm = sampleModel;
int deltaX = x0 - x;
int deltaY = y0 - y;
return new ShortComponentRaster(sm,
dataBuffer,
new Rectangle(x0, y0, width, height),
new Point(sampleModelTranslateX+deltaX,
sampleModelTranslateY+deltaY),
this);
}
public static void fillDCM(DataBuffer data, SampleModel sm, int csType,
int c1Bits, int c2Bits, int c3Bits)
{
int [] pixel;
pixel = new int[4];
for (int i = 0; i < WIDTH; i++) {
for (int j = 0; j < HEIGHT; j++) {
pixel[0] = i >> (8 - c1Bits);
pixel[1] = j >> (8 - c2Bits);
pixel[2] = ((i + j)>>1) >> (8 - c3Bits);
pixel[3] = 0xFF;
sm.setPixel(i, j, pixel, data);
}
}
}
/**
* Creates a Raster with the same layout but using a different
* width and height, and with new zeroed data arrays.
*/
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 ShortComponentRaster(sm, new Point(0, 0));
}
/**
* Creates a subraster given a region of the raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this raster to the upper-left corner
* of the subraster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subraster will reference the same
* DataBuffer as the parent raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
* @param height Height (in pixels) of the subraster.
* @param x0 Translated X origin of the subraster.
* @param y0 Translated Y origin of the subraster.
* @param bandList Array of band indices.
* @exception RasterFormatException
* if the specified bounding box is outside of the parent raster.
*/
public WritableRaster createWritableChild (int x, int y,
int width, int height,
int x0, int y0,
int bandList[]) {
if (x < this.minX) {
throw new RasterFormatException("x lies outside raster");
}
if (y < this.minY) {
throw new RasterFormatException("y lies outside raster");
}
if ((x+width < x) || (x+width > this.minX + this.width)) {
throw new RasterFormatException("(x + width) is outside raster");
}
if ((y+height < y) || (y+height > this.minY + this.height)) {
throw new RasterFormatException("(y + height) is outside raster");
}
SampleModel sm;
if (bandList != null)
sm = sampleModel.createSubsetSampleModel(bandList);
else
sm = sampleModel;
int deltaX = x0 - x;
int deltaY = y0 - y;
return new IntegerInterleavedRaster(sm,
dataBuffer,
new Rectangle(x0,y0,width,height),
new Point(sampleModelTranslateX+deltaX,
sampleModelTranslateY+deltaY),
this);
}
/**
* Constructs a ByteComponentRaster 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 a DataBufferByte compatible with SampleModel.
* SampleModel must be of type SinglePixelPackedSampleModel
* or ComponentSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferShort that contains the image data.
* @param origin The Point that specifies the origin.
*/
public ByteComponentRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Point origin) {
this(sampleModel,
dataBuffer,
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/**
* Creates a subraster given a region of the raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this raster to the upper-left corner
* of the subraster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subraster will reference the same
* DataBuffer as the parent raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
* @param height Height (in pixels) of the subraster.
* @param x0 Translated X origin of the subraster.
* @param y0 Translated Y origin of the subraster.
* @param bandList Array of band indices.
* @exception RasterFormatException
* if the specified bounding box is outside of the parent raster.
*/
public WritableRaster createWritableChild (int x, int y,
int width, int height,
int x0, int y0,
int bandList[]) {
if (x < this.minX) {
throw new RasterFormatException("x lies outside raster");
}
if (y < this.minY) {
throw new RasterFormatException("y lies outside raster");
}
if ((x+width < x) || (x+width > this.minX + this.width)) {
throw new RasterFormatException("(x + width) is outside raster");
}
if ((y+height < y) || (y+height > this.minY + this.height)) {
throw new RasterFormatException("(y + height) is outside raster");
}
SampleModel sm;
if (bandList != null)
sm = sampleModel.createSubsetSampleModel(bandList);
else
sm = sampleModel;
int deltaX = x0 - x;
int deltaY = y0 - y;
return new IntegerComponentRaster(sm,
dataBuffer,
new Rectangle(x0,y0,width,height),
new Point(sampleModelTranslateX+deltaX,
sampleModelTranslateY+deltaY),
this);
}
@Override
public SampleModel convert(FieldAccessor fa, Instance instance) throws FieldAccessor.InvalidFieldException {
int width = fa.getInt(instance, "width"); // NOI18N
int height = fa.getInt(instance, "height"); // NOI18N
int dataType = fa.getInt(instance, "dataType"); // NOI18N
int scanlineStride = fa.getInt(instance, "scanlineStride"); // NOI18N
int[] bitMasks = fa.getIntArray(instance, "bitMasks", false); // NOI18N
return new SinglePixelPackedSampleModel(dataType, width, height, scanlineStride, bitMasks);
}
/**
* Constructs a BytePackedRaster 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 a DataBufferByte compatible with SampleModel.
* SampleModel must be of type MultiPixelPackedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferShort that contains the image data.
* @param origin The Point that specifies the origin.
*/
public BytePackedRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Point origin) {
this(sampleModel,
dataBuffer,
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/**
* Creates a Writable subRaster given a region of the Raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this Raster to the upper-left corner
* of the subRaster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subRaster will reference the same
* DataBuffers as the parent Raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
* @param height Height (in pixels) of the subraster.
* @param x0 Translated X origin of the subraster.
* @param y0 Translated Y origin of the subraster.
* @param bandList Array of band indices.
* @exception RasterFormatException
* if the specified bounding box is outside of the parent Raster.
*/
public WritableRaster createWritableChild(int x, int y,
int width, int height,
int x0, int y0,
int[] bandList) {
if (x < this.minX) {
throw new RasterFormatException("x lies outside the raster");
}
if (y < this.minY) {
throw new RasterFormatException("y lies outside the raster");
}
if ((x+width < x) || (x+width > this.minX + this.width)) {
throw new RasterFormatException("(x + width) is outside of Raster");
}
if ((y+height < y) || (y+height > this.minY + this.height)) {
throw new RasterFormatException("(y + height) is outside of Raster");
}
SampleModel sm;
if (bandList != null)
sm = sampleModel.createSubsetSampleModel(bandList);
else
sm = sampleModel;
int deltaX = x0 - x;
int deltaY = y0 - y;
return new ShortComponentRaster(sm,
(DataBufferUShort) dataBuffer,
new Rectangle(x0, y0, width, height),
new Point(sampleModelTranslateX+deltaX,
sampleModelTranslateY+deltaY),
this);
}
/**
* Constructs a BytePackedRaster 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 a DataBufferByte compatible with SampleModel.
* SampleModel must be of type MultiPixelPackedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferShort that contains the image data.
* @param origin The Point that specifies the origin.
*/
public BytePackedRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Point origin) {
this(sampleModel,
dataBuffer,
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/**
* Constructs a ShortBandedRaster with the given SampleModel,
* DataBuffer, and parent. DataBuffer must be a DataBufferUShort and
* SampleModel must be of type BandedSampleModel.
* When translated into the base Raster's
* coordinate system, aRegion must be contained by the base Raster.
* Origin is the coordinate in the new Raster's coordinate system of
* the origin of the base Raster. (The base Raster is the Raster's
* ancestor which has no parent.)
*
* 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 DataBufferUShort that contains the image data.
* @param aRegion The Rectangle that specifies the image area.
* @param origin The Point that specifies the origin.
* @param parent The parent (if any) of this raster.
*/
public ShortBandedRaster(SampleModel sampleModel,
DataBuffer dataBuffer,
Rectangle aRegion,
Point origin,
ShortBandedRaster parent) {
super(sampleModel, dataBuffer, aRegion, origin, parent);
this.maxX = minX + width;
this.maxY = minY + height;
if (!(dataBuffer instanceof DataBufferUShort)) {
throw new RasterFormatException("ShortBandedRaster must have " +
"ushort DataBuffers");
}
DataBufferUShort dbus = (DataBufferUShort)dataBuffer;
if (sampleModel instanceof BandedSampleModel) {
BandedSampleModel bsm = (BandedSampleModel)sampleModel;
this.scanlineStride = bsm.getScanlineStride();
int bankIndices[] = bsm.getBankIndices();
int bandOffsets[] = bsm.getBandOffsets();
int dOffsets[] = dbus.getOffsets();
dataOffsets = new int[bankIndices.length];
data = new short[bankIndices.length][];
int xOffset = aRegion.x - origin.x;
int yOffset = aRegion.y - origin.y;
for (int i = 0; i < bankIndices.length; i++) {
data[i] = stealData(dbus, bankIndices[i]);
dataOffsets[i] = dOffsets[bankIndices[i]] +
xOffset + yOffset*scanlineStride + bandOffsets[i];
}
} else {
throw new RasterFormatException("ShortBandedRasters must have "+
"BandedSampleModels");
}
verify();
}
@Override
public WritableRaster createCompatibleWritableRaster(final int w,
final int h)
{
final int[] bandOffsets = new int[nChannels];
for (int i = 0; i < nChannels; i++)
bandOffsets[i] = i;
final SampleModel m = new ComponentSampleModel(DataBuffer.TYPE_INT, w, h,
nChannels, w * nChannels, bandOffsets);
final DataBuffer db = new DataBufferInt(w * h, nChannels);
return Raster.createWritableRaster(m, db, null);
}
/**
* Constructs a ByteBandedRaster 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. SampleModel
* must be of type BandedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param origin The Point that specifies the origin.
*/
public ByteBandedRaster(SampleModel sampleModel,
Point origin) {
this(sampleModel,
sampleModel.createDataBuffer(),
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/**
* Constructs a ShortComponentRaster 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. SampleModel must be of type
* ComponentSampleModel or SinglePixelPackedSampleModel.
* @param sampleModel The SampleModel that specifies the layout.
* @param origin The Point that specified the origin.
*/
public ShortComponentRaster(SampleModel sampleModel, Point origin) {
this(sampleModel,
(DataBufferUShort) sampleModel.createDataBuffer(),
new Rectangle(origin.x,
origin.y,
sampleModel.getWidth(),
sampleModel.getHeight()),
origin,
null);
}
/**
* Creates a Writable subRaster given a region of the Raster. The x and y
* coordinates specify the horizontal and vertical offsets
* from the upper-left corner of this Raster to the upper-left corner
* of the subRaster. A subset of the bands of the parent Raster may
* be specified. If this is null, then all the bands are present in the
* subRaster. A translation to the subRaster may also be specified.
* Note that the subRaster will reference the same
* DataBuffers as the parent Raster, but using different offsets.
* @param x X offset.
* @param y Y offset.
* @param width Width (in pixels) of the subraster.
* @param height Height (in pixels) of the subraster.
* @param x0 Translated X origin of the subraster.
* @param y0 Translated Y origin of the subraster.
* @param bandList Array of band indices.
* @exception RasterFormatException
* if the specified bounding box is outside of the parent Raster.
*/
public WritableRaster createWritableChild(int x, int y,
int width, int height,
int x0, int y0,
int[] bandList) {
if (x < this.minX) {
throw new RasterFormatException("x lies outside the raster");
}
if (y < this.minY) {
throw new RasterFormatException("y lies outside the raster");
}
if ((x+width < x) || (x+width > this.minX + this.width)) {
throw new RasterFormatException("(x + width) is outside of Raster");
}
if ((y+height < y) || (y+height > this.minY + this.height)) {
throw new RasterFormatException("(y + height) is outside of Raster");
}
SampleModel sm;
if (bandList != null)
sm = sampleModel.createSubsetSampleModel(bandList);
else
sm = sampleModel;
int deltaX = x0 - x;
int deltaY = y0 - y;
return new ShortInterleavedRaster(sm,
dataBuffer,
new Rectangle(x0, y0, width, height),
new Point(sampleModelTranslateX+deltaX,
sampleModelTranslateY+deltaY),
this);
}