java.awt.image
Class WritableRaster

java.lang.Object   
  java.awt.image.Raster   
      java.awt.image.WritableRaster

public class WritableRaster
extends Raster   

This class extends Raster to provide pixel writing capabilities. Refer to the class comment for Raster for descriptions of how a Raster stores pixels.

The constructors of this class are protected. To instantiate a WritableRaster, use one of the createWritableRaster factory methods in the Raster class.

Field Summary

Fields inherited from class java.awt.image.Raster

dataBuffer , height , minX , minY , numBands , numDataElements , parent , sampleModel , sampleModelTranslateX , sampleModelTranslateY , width

Constructor Summary

protected	WritableRaster (SampleModel sampleModel, DataBuffer dataBuffer, Point origin) Constructs a WritableRaster with the given SampleModel and DataBuffer.
protected	WritableRaster (SampleModel sampleModel, DataBuffer dataBuffer, Rectangle aRegion, Point sampleModelTranslate, WritableRaster parent) Constructs a WritableRaster with the given SampleModel, DataBuffer, and parent.
protected	WritableRaster (SampleModel sampleModel, Point origin) Constructs a WritableRaster with the given SampleModel.

Method Summary

WritableRaster	createWritableChild (int parentX, int parentY, int w, int h, int childMinX, int childMinY, int[] bandList) Returns a new WritableRaster which shares all or part of this WritableRaster's DataBuffer.
WritableRaster	createWritableTranslatedChild (int childMinX, int childMinY) Create a WritableRaster with the same size, SampleModel and DataBuffer as this one, but with a different location.
WritableRaster	getWritableParent () Returns the parent WritableRaster (if any) of this WritableRaster, or else null.
void	setDataElements (int x, int y, int w, int h, Object inData) Sets the data for a rectangle of pixels from a primitive array of type TransferType.
void	setDataElements (int x, int y, Object inData) Sets the data for a single pixel from a primitive array of type TransferType.
void	setDataElements (int x, int y, Raster inRaster) Sets the data for a rectangle of pixels from an input Raster.
void	setPixel (int x, int y, double[] dArray) Sets a pixel in the DataBuffer using a double array of samples for input.
void	setPixel (int x, int y, float[] fArray) Sets a pixel in the DataBuffer using a float array of samples for input.
void	setPixel (int x, int y, int[] iArray) Sets a pixel in the DataBuffer using an int array of samples for input.
void	setPixels (int x, int y, int w, int h, double[] dArray) Sets all samples for a rectangle of pixels from a double array containing one sample per array element.
void	setPixels (int x, int y, int w, int h, float[] fArray) Sets all samples for a rectangle of pixels from a float array containing one sample per array element.
void	setPixels (int x, int y, int w, int h, int[] iArray) Sets all samples for a rectangle of pixels from an int array containing one sample per array element.
void	setRect (int dx, int dy, Raster srcRaster) Copies pixels from Raster srcRaster to this WritableRaster.
void	setRect (Raster srcRaster) Copies pixels from Raster srcRaster to this WritableRaster.
void	setSample (int x, int y, int b, double s) Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a double for input.
void	setSample (int x, int y, int b, float s) Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a float for input.
void	setSample (int x, int y, int b, int s) Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using an int for input.
void	setSamples (int x, int y, int w, int h, int b, double[] dArray) Sets the samples in the specified band for the specified rectangle of pixels from a double array containing one sample per array element.
void	setSamples (int x, int y, int w, int h, int b, float[] fArray) Sets the samples in the specified band for the specified rectangle of pixels from a float array containing one sample per array element.
void	setSamples (int x, int y, int w, int h, int b, int[] iArray) Sets the samples in the specified band for the specified rectangle of pixels from an int array containing one sample per array element.

Methods inherited from class java.awt.image.Raster

createBandedRaster , createBandedRaster , createBandedRaster , createChild , createCompatibleWritableRaster , createCompatibleWritableRaster , createCompatibleWritableRaster , createCompatibleWritableRaster , createInterleavedRaster , createInterleavedRaster , createInterleavedRaster , createPackedRaster , createPackedRaster , createPackedRaster , createPackedRaster , createRaster , createTranslatedChild , createWritableRaster , createWritableRaster , getBounds , getDataBuffer , getDataElements , getDataElements , getHeight , getMinX , getMinY , getNumBands , getNumDataElements , getParent , getPixel , getPixel , getPixel , getPixels , getPixels , getPixels , getSample , getSampleDouble , getSampleFloat , getSampleModel , getSampleModelTranslateX , getSampleModelTranslateY , getSamples , getSamples , getSamples , getTransferType , getWidth

Methods inherited from class java.lang.Object

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

Constructor Detail

WritableRaster

protected WritableRaster(SampleModel    sampleModel,
                         Point    origin)

Constructs a WritableRaster with the given SampleModel. The WritableRaster's upper left corner is origin and it is the same size as the SampleModel. A DataBuffer large enough to describe the WritableRaster is automatically created.

Parameters:

sampleModel - The SampleModel that specifies the layout.

origin - The Point that specifies the origin.

Throws:

RasterFormatException - if computing either origin.x + sampleModel.getWidth() or origin.y + sampleModel.getHeight() results in integer overflow

WritableRaster

protected WritableRaster(SampleModel    sampleModel,
                         DataBuffer    dataBuffer,
                         Point    origin)

Constructs a WritableRaster with the given SampleModel and DataBuffer. The WritableRaster'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.

Parameters:

sampleModel - The SampleModel that specifies the layout.

dataBuffer - The DataBuffer that contains the image data.

origin - The Point that specifies the origin.

Throws:

RasterFormatException - if computing either origin.x + sampleModel.getWidth() or origin.y + sampleModel.getHeight() results in integer overflow

WritableRaster

protected WritableRaster(SampleModel    sampleModel,
                         DataBuffer    dataBuffer,
                         Rectangle    aRegion,
                         Point    sampleModelTranslate,
                         WritableRaster    parent)

Constructs a WritableRaster 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.

Parameters:

sampleModel - The SampleModel that specifies the layout.

dataBuffer - The DataBuffer that contains the image data.

aRegion - The Rectangle that specifies the image area.

sampleModelTranslate - The Point that specifies the translation from SampleModel to Raster coordinates.

parent - The parent (if any) of this raster.

Throws:

RasterFormatException - if aRegion has width or height less than or equal to zero, or computing either aRegion.x + aRegion.width or aRegion.y + aRegion.height results in integer overflow

Method Detail

getWritableParent

public WritableRaster    getWritableParent()

Returns the parent WritableRaster (if any) of this WritableRaster, or else null.

Returns:

the parent of this WritableRaster, or null.

createWritableTranslatedChild

public WritableRaster    createWritableTranslatedChild(int childMinX,
                                                    int childMinY)

Create a WritableRaster with the same size, SampleModel and DataBuffer as this one, but with a different location. The new WritableRaster will possess a reference to the current WritableRaster, accessible through its getParent() and getWritableParent() methods.

Parameters:

childMinX - X coord of the upper left corner of the new Raster.

childMinY - Y coord of the upper left corner of the new Raster.

Returns:

a WritableRaster the same as this one except for the specified location.

Throws:

RasterFormatException - if computing either childMinX + this.getWidth() or childMinY + this.getHeight() results in integer overflow

createWritableChild

public WritableRaster    createWritableChild(int parentX,
                                          int parentY,
                                          int w,
                                          int h,
                                          int childMinX,
                                          int childMinY,
                                          int[] bandList)

Returns a new WritableRaster which shares all or part of this WritableRaster's DataBuffer. The new WritableRaster will possess a reference to the current WritableRaster, accessible through its getParent() and getWritableParent() methods.

The parentX, parentY, width and height parameters form a Rectangle in this WritableRaster'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 WritableRaster.

The new WritableRaster may additionally be translated to a different coordinate system for the plane than that used by the current WritableRaster. The childMinX and childMinY parameters give the new (x, y) coordinate of the upper-left pixel of the returned WritableRaster; the coordinate (childMinX, childMinY) in the new WritableRaster will map to the same pixel as the coordinate (parentX, parentY) in the current WritableRaster.

The new WritableRaster may be defined to contain only a subset of the bands of the current WritableRaster, possibly reordered, by means of the bandList parameter. If bandList is null, it is taken to include all of the bands of the current WritableRaster in their current order.

To create a new WritableRaster that contains a subregion of the current WritableRaster, 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.

Parameters:

parentX - X coordinate of the upper left corner in this WritableRaster's coordinates.

parentY - Y coordinate of the upper left corner in this WritableRaster's coordinates.

w - Width of the region starting at (parentX, parentY).

h - Height of the region starting at (parentX, parentY).

childMinX - X coordinate of the upper left corner of the returned WritableRaster.

childMinY - Y coordinate of the upper left corner of the returned WritableRaster.

bandList - Array of band indices, or null to use all bands.

Returns:

a WritableRaster sharing all or part of the DataBuffer of this WritableRaster.

Throws:

RasterFormatException - if the subregion is outside of the raster bounds.

RasterFormatException - if w or h is less than or equal to zero, or computing any of parentX + w, parentY + h, childMinX + w, or childMinY + h results in integer overflow

setDataElements