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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » javax.media.jai 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   javax.media.jai.PlanarImage
      javax.media.jai.OpImage
         javax.media.jai.AreaOpImage

All known Subclasses:   com.sun.media.jai.opimage.DilateOpImage,  com.sun.media.jai.mlib.MlibMinFilterOpImage,  com.sun.media.jai.mlib.MlibSeparableConvolveOpImage,  com.sun.media.jai.opimage.GradientOpImage,  com.sun.media.jai.mlib.MlibDilate3SquareOpImage,  com.sun.media.jai.mlib.MlibErode3SquareOpImage,  com.sun.media.jai.opimage.ErodeBinaryOpImage,  com.sun.media.jai.mlib.MlibErode3PlusOpImage,  com.sun.media.jai.mlib.MlibDilate3PlusOpImage,  com.sun.media.jai.opimage.ConvolveOpImage,  com.sun.media.jai.opimage.MaxFilterOpImage,  com.sun.media.jai.mlib.MlibSobelOpImage,  com.sun.media.jai.opimage.ErodeOpImage,  com.sun.media.jai.mlib.MlibGradientOpImage,  com.sun.media.jai.opimage.SeparableConvolveOpImage,  com.sun.media.jai.mlib.MlibConvolveOpImage,  com.sun.media.jai.mlib.MlibMaxFilterOpImage,  com.sun.media.jai.opimage.DilateBinaryOpImage,  com.sun.media.jai.opimage.MinFilterOpImage,  com.sun.media.jai.mlib.MlibMedianFilterOpImage,  com.sun.media.jai.opimage.MedianFilterOpImage,  com.sun.media.jai.mlib.MlibConvolveNxNOpImage,  com.sun.media.jai.opimage.Convolve3x3OpImage,
AreaOpImage
abstract public class AreaOpImage extends OpImage (Code)
An abstract base class for image operators that require only a fixed rectangular source region around a source pixel in order to compute each destination pixel.

The source and the destination images will occupy the same region of the plane. A given destination pixel (x, y) may be computed from the neighborhood of source pixels beginning at (x - leftPadding, y - topPadding) and extending to (x + rightPadding, y + bottomPadding) inclusive.

Since this operator needs a region around the source pixel in order to compute the destination pixel, the border destination pixels cannot be computed without any source extension. The source extension can be specified by supplying a BorderExtender that will define the pixel values of the source outside the actual source area.

If no extension is specified, the destination samples that cannot be computed will be written in the destination as zero. If the source image begins at pixel (minX, minY) and has width w and height h, the result of performing an area operation will be an image beginning at minX, minY, and having a width of w and a height of h, with the area being computed and written starting at (minX + leftPadding, minY + topPadding) and having width Math.max(w - leftPadding - rightPadding, 0) and height Math.max(h - topPadding - bottomPadding, 0).

A RenderingHints for JAI.KEY_REPLACE_INDEX_COLOR_MODEL with the value of Boolean.TRUE will automatically be added to the given configuration and passed up to the superclass constructor so that area operations are performed on the pixel values instead of being performed on the indices into the color map for those operations whose source(s) have an IndexColorModel. This addition will only take place if a value for the JAI.KEY_REPLACE_INDEX_COLOR_MODEL has not already been provided by the user. Note that the configuration Map is cloned before the new hint is added to it. Regarding the value for the JAI.KEY_REPLACE_INDEX_COLOR_MODEL RenderingHints, the operator itself can be smart based on the parameters, i.e. while the default value for the JAI.KEY_REPLACE_INDEX_COLOR_MODEL is Boolean.TRUE for operations that extend this class, in some cases the operator could set the default.
See Also:   BorderExtender



Field Summary
protected  intbottomPadding
     The number of source pixels needed below the central pixel.
protected  BorderExtenderextender
     The BorderExtender, may be null.
protected  intleftPadding
     The number of source pixels needed to the left of the central pixel.
protected  intrightPadding
     The number of source pixels needed to the right of the central pixel.
protected  inttopPadding
     The number of source pixels needed above the central pixel.

Constructor Summary
public  AreaOpImage(RenderedImage source, ImageLayout layout, Map configuration, boolean cobbleSources, BorderExtender extender, int leftPadding, int rightPadding, int topPadding, int bottomPadding)
     Constructs an AreaOpImage.

Method Summary
public  RastercomputeTile(int tileX, int tileY)
     Computes a tile.
public  BorderExtendergetBorderExtender()
     Retrieve the BorderExtender object associated with this class instance.
public  intgetBottomPadding()
     Returns the number of pixels needed below the central pixel.
public  intgetLeftPadding()
     Returns the number of pixels needed to the left of the central pixel.
public  intgetRightPadding()
     Returns the number of pixels needed to the right of the central pixel.
public  intgetTopPadding()
     Returns the number of pixels needed above the central pixel.
public  RectanglemapDestRect(Rectangle destRect, int sourceIndex)
     Returns a conservative estimate of the region of a specified source that is required in order to compute the pixels of a given destination rectangle.
public  RectanglemapSourceRect(Rectangle sourceRect, int sourceIndex)
     Returns a conservative estimate of the destination region that can potentially be affected by the pixels of a rectangle of a given source.

Field Detail
bottomPadding
protected int bottomPadding(Code)
The number of source pixels needed below the central pixel.



extender
protected BorderExtender extender(Code)
The BorderExtender, may be null.



leftPadding
protected int leftPadding(Code)
The number of source pixels needed to the left of the central pixel.



rightPadding
protected int rightPadding(Code)
The number of source pixels needed to the right of the central pixel.



topPadding
protected int topPadding(Code)
The number of source pixels needed above the central pixel.




Constructor Detail
AreaOpImage
public AreaOpImage(RenderedImage source, ImageLayout layout, Map configuration, boolean cobbleSources, BorderExtender extender, int leftPadding, int rightPadding, int topPadding, int bottomPadding)(Code)
Constructs an AreaOpImage. The layout variables are set in the standard way by the OpImage constructor.

Additional control over the image bounds, tile grid layout, SampleModel, and ColorModel may be obtained by specifying an ImageLayout parameter. If the image bounds are specified but do not overlap the source bounds then an IllegalArgumentException will be thrown. This parameter will be passed to the superclass constructor unchanged.

A RenderingHints for JAI.KEY_REPLACE_INDEX_COLOR_MODEL with the value of Boolean.TRUE will automatically be added to the given configuration and passed up to the superclass constructor so that area operations are performed on the pixel values instead of being performed on the indices into the color map for those operations whose source(s) have an IndexColorModel. This addition will only take place if a value for the JAI.KEY_REPLACE_INDEX_COLOR_MODEL has not already been provided by the user. Note that the configuration Map is cloned before the new hint is added to it.
Parameters:
  source - A RenderedImage.
Parameters:
  layout - An ImageLayout containing the sourcedimensions before padding, and optionally containing thetile grid layout, SampleModel, andColorModel.
Parameters:
  configuration - Configurable attributes of the image includingconfiguration variables indexed byRenderingHints.Keys and image properties indexedby Strings or CaselessStringKeys.This is simply forwarded to the superclass constructor.
Parameters:
  cobbleSources - A boolean indicating whethercomputeRect() expects contiguous sources.
Parameters:
  extender - A BorderExtender, or null.
Parameters:
  leftPadding - The desired left padding.
Parameters:
  rightPadding - The desired right padding.
Parameters:
  topPadding - The desired top padding.
Parameters:
  bottomPadding - The desired bottom padding.
throws:
  IllegalArgumentException - if sourceis null.
throws:
  IllegalArgumentException - if the user-specified bounds dointersect the source bounds.
since:
   JAI 1.1





Method Detail
computeTile
public Raster computeTile(int tileX, int tileY)(Code)
Computes a tile. If source cobbling was requested at construction time, the source tile boundaries are overlayed onto the destination, cobbling is performed for areas that intersect multiple source tiles, and computeRect(Raster[], WritableRaster, Rectangle) is called for each of the resulting regions. Otherwise, computeRect(PlanarImage[], WritableRaster, Rectangle) is called once to compute the entire active area of the tile.

The image bounds may be larger than the bounds of the source image. In this case, samples for which there are no no corresponding sources are set to zero.
Parameters:
  tileX - The X index of the tile.
Parameters:
  tileY - The Y index of the tile. The tile as a Raster.




getBorderExtender
public BorderExtender getBorderExtender()(Code)
Retrieve the BorderExtender object associated with this class instance. The object is returned by reference. The associated BorderExtender objector null.
since:
   JAI 1.1



getBottomPadding
public int getBottomPadding()(Code)
Returns the number of pixels needed below the central pixel. The bottom padding factor.



getLeftPadding
public int getLeftPadding()(Code)
Returns the number of pixels needed to the left of the central pixel. The left padding factor.



getRightPadding
public int getRightPadding()(Code)
Returns the number of pixels needed to the right of the central pixel. The right padding factor.



getTopPadding
public int getTopPadding()(Code)
Returns the number of pixels needed above the central pixel. The top padding factor.



mapDestRect
public Rectangle mapDestRect(Rectangle destRect, int sourceIndex)(Code)
Returns a conservative estimate of the region of a specified source that is required in order to compute the pixels of a given destination rectangle. The resulting Rectangle is not clipped to the source image bounds.
Parameters:
  destRect - the Rectangle in destination coordinates.
Parameters:
  sourceIndex - the index of the source image. a Rectangle indicating the required source region.
throws:
  IllegalArgumentException - if sourceIndex isnegative or greater than the index of the last source.
throws:
  IllegalArgumentException - if destRect isnull.



mapSourceRect
public Rectangle mapSourceRect(Rectangle sourceRect, int sourceIndex)(Code)
Returns a conservative estimate of the destination region that can potentially be affected by the pixels of a rectangle of a given source. The resulting Rectangle is not clipped to the destination image bounds.
Parameters:
  sourceRect - the Rectangle in source coordinates.
Parameters:
  sourceIndex - the index of the source image. a Rectangle indicating the potentially affecteddestination region, or null if the region isunknown.
throws:
  IllegalArgumentException - if sourceIndex isnegative or greater than the index of the last source.
throws:
  IllegalArgumentException - if sourceRect isnull.



Fields inherited from javax.media.jai.OpImage
final public static int OP_COMPUTE_BOUND(Code)(Java Doc)
final public static int OP_IO_BOUND(Code)(Java Doc)
final public static int OP_NETWORK_BOUND(Code)(Java Doc)
protected transient TileCache cache(Code)(Java Doc)
protected boolean cobbleSources(Code)(Java Doc)
protected Object tileCacheMetric(Code)(Java Doc)
protected TileRecycler tileRecycler(Code)(Java Doc)

Methods inherited from javax.media.jai.OpImage
protected void addTileToCache(int tileX, int tileY, Raster tile)(Code)(Java Doc)
public void cancelTiles(TileRequest request, Point[] tileIndices)(Code)(Java Doc)
static Vector checkSourceVector(Vector sources, boolean checkElements)(Code)(Java Doc)
protected void computeRect(Raster[] sources, WritableRaster dest, Rectangle destRect)(Code)(Java Doc)
protected void computeRect(PlanarImage[] sources, WritableRaster dest, Rectangle destRect)(Code)(Java Doc)
public Raster computeTile(int tileX, int tileY)(Code)(Java Doc)
public boolean computesUniqueTiles()(Code)(Java Doc)
final protected WritableRaster createTile(int tileX, int tileY)(Code)(Java Doc)
public synchronized void dispose()(Code)(Java Doc)
public static int getExpandedNumBands(SampleModel sampleModel, ColorModel colorModel)(Code)(Java Doc)
protected synchronized RasterFormatTag[] getFormatTags()(Code)(Java Doc)
public int getOperationComputeType()(Code)(Java Doc)
public Raster getTile(int tileX, int tileY)(Code)(Java Doc)
public TileCache getTileCache()(Code)(Java Doc)
public Object getTileCacheMetric()(Code)(Java Doc)
public Point[] getTileDependencies(int tileX, int tileY, int sourceIndex)(Code)(Java Doc)
protected Raster getTileFromCache(int tileX, int tileY)(Code)(Java Doc)
public TileRecycler getTileRecycler()(Code)(Java Doc)
public Raster[] getTiles(Point[] tileIndices)(Code)(Java Doc)
public boolean hasExtender(int sourceIndex)(Code)(Java Doc)
public Point2D mapDestPoint(Point2D destPt, int sourceIndex)(Code)(Java Doc)
abstract public Rectangle mapDestRect(Rectangle destRect, int sourceIndex)(Code)(Java Doc)
public Point2D mapSourcePoint(Point2D sourcePt, int sourceIndex)(Code)(Java Doc)
abstract public Rectangle mapSourceRect(Rectangle sourceRect, int sourceIndex)(Code)(Java Doc)
public void prefetchTiles(Point[] tileIndices)(Code)(Java Doc)
public TileRequest queueTiles(Point[] tileIndices)(Code)(Java Doc)
protected void recycleTile(Raster tile)(Code)(Java Doc)
public void setTileCache(TileCache cache)(Code)(Java Doc)
protected static Vector vectorize(RenderedImage image)(Code)(Java Doc)
protected static Vector vectorize(RenderedImage image1, RenderedImage image2)(Code)(Java Doc)
protected static Vector vectorize(RenderedImage image1, RenderedImage image2, RenderedImage image3)(Code)(Java Doc)

Fields inherited from javax.media.jai.PlanarImage
protected ColorModel colorModel(Code)(Java Doc)
protected PropertyChangeSupportJAI eventManager(Code)(Java Doc)
protected int height(Code)(Java Doc)
protected int minX(Code)(Java Doc)
protected int minY(Code)(Java Doc)
protected WritablePropertySourceImpl properties(Code)(Java Doc)
protected SampleModel sampleModel(Code)(Java Doc)
protected TileFactory tileFactory(Code)(Java Doc)
protected int tileGridXOffset(Code)(Java Doc)
protected int tileGridYOffset(Code)(Java Doc)
protected int tileHeight(Code)(Java Doc)
protected int tileWidth(Code)(Java Doc)
protected int width(Code)(Java Doc)

Methods inherited from javax.media.jai.PlanarImage
public static int XToTileX(int x, int tileGridXOffset, int tileWidth)(Code)(Java Doc)
public int XToTileX(int x)(Code)(Java Doc)
public static int YToTileY(int y, int tileGridYOffset, int tileHeight)(Code)(Java Doc)
public int YToTileY(int y)(Code)(Java Doc)
public void addPropertyChangeListener(PropertyChangeListener listener)(Code)(Java Doc)
public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener)(Code)(Java Doc)
public synchronized boolean addSink(Object sink)(Code)(Java Doc)
protected void addSink(PlanarImage sink)(Code)(Java Doc)
protected void addSource(Object source)(Code)(Java Doc)
public synchronized void addTileComputationListener(TileComputationListener listener)(Code)(Java Doc)
public void cancelTiles(TileRequest request, Point[] tileIndices)(Code)(Java Doc)
public WritableRaster copyData()(Code)(Java Doc)
public WritableRaster copyData(WritableRaster raster)(Code)(Java Doc)
public void copyExtendedData(WritableRaster dest, BorderExtender extender)(Code)(Java Doc)
public static ColorModel createColorModel(SampleModel sm)(Code)(Java Doc)
public PlanarImage createSnapshot()(Code)(Java Doc)
final protected WritableRaster createWritableRaster(SampleModel sampleModel, Point location)(Code)(Java Doc)
public synchronized void dispose()(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
public BufferedImage getAsBufferedImage(Rectangle rect, ColorModel cm)(Code)(Java Doc)
public BufferedImage getAsBufferedImage()(Code)(Java Doc)
public Rectangle getBounds()(Code)(Java Doc)
public ColorModel getColorModel()(Code)(Java Doc)
public Raster getData()(Code)(Java Doc)
public Raster getData(Rectangle region)(Code)(Java Doc)
public static ColorModel getDefaultColorModel(int dataType, int numBands)(Code)(Java Doc)
public Raster getExtendedData(Rectangle region, BorderExtender extender)(Code)(Java Doc)
public Graphics getGraphics()(Code)(Java Doc)
public int getHeight()(Code)(Java Doc)
public Object getImageID()(Code)(Java Doc)
public int getMaxTileX()(Code)(Java Doc)
public int getMaxTileY()(Code)(Java Doc)
public int getMaxX()(Code)(Java Doc)
public int getMaxY()(Code)(Java Doc)
public int getMinTileX()(Code)(Java Doc)
public int getMinTileY()(Code)(Java Doc)
public int getMinX()(Code)(Java Doc)
public int getMinY()(Code)(Java Doc)
public int getNumBands()(Code)(Java Doc)
public int getNumSources()(Code)(Java Doc)
public int getNumXTiles()(Code)(Java Doc)
public int getNumYTiles()(Code)(Java Doc)
protected Hashtable getProperties()(Code)(Java Doc)
public Object getProperty(String name)(Code)(Java Doc)
public Class getPropertyClass(String name)(Code)(Java Doc)
public String[] getPropertyNames()(Code)(Java Doc)
public String[] getPropertyNames(String prefix)(Code)(Java Doc)
public SampleModel getSampleModel()(Code)(Java Doc)
public Vector getSinks()(Code)(Java Doc)
public PlanarImage getSource(int index)(Code)(Java Doc)
public PlanarImage getSourceImage(int index)(Code)(Java Doc)
public Object getSourceObject(int index)(Code)(Java Doc)
public Vector getSources()(Code)(Java Doc)
public void getSplits(IntegerSequence xSplits, IntegerSequence ySplits, Rectangle rect)(Code)(Java Doc)
abstract public Raster getTile(int tileX, int tileY)(Code)(Java Doc)
public TileComputationListener[] getTileComputationListeners()(Code)(Java Doc)
public TileFactory getTileFactory()(Code)(Java Doc)
public int getTileGridXOffset()(Code)(Java Doc)
public int getTileGridYOffset()(Code)(Java Doc)
public int getTileHeight()(Code)(Java Doc)
public Point[] getTileIndices(Rectangle region)(Code)(Java Doc)
public Rectangle getTileRect(int tileX, int tileY)(Code)(Java Doc)
public int getTileWidth()(Code)(Java Doc)
public Raster[] getTiles(Point[] tileIndices)(Code)(Java Doc)
public Raster[] getTiles()(Code)(Java Doc)
public int getWidth()(Code)(Java Doc)
public boolean overlapsMultipleTiles(Rectangle rect)(Code)(Java Doc)
public void prefetchTiles(Point[] tileIndices)(Code)(Java Doc)
public TileRequest queueTiles(Point[] tileIndices)(Code)(Java Doc)
public void removeProperty(String name)(Code)(Java Doc)
public void removePropertyChangeListener(PropertyChangeListener listener)(Code)(Java Doc)
public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener)(Code)(Java Doc)
public synchronized boolean removeSink(Object sink)(Code)(Java Doc)
protected boolean removeSink(PlanarImage sink)(Code)(Java Doc)
public void removeSinks()(Code)(Java Doc)
protected boolean removeSource(Object source)(Code)(Java Doc)
protected void removeSources()(Code)(Java Doc)
public synchronized void removeTileComputationListener(TileComputationListener listener)(Code)(Java Doc)
protected void setImageLayout(ImageLayout layout)(Code)(Java Doc)
protected void setProperties(Hashtable properties)(Code)(Java Doc)
public void setProperty(String name, Object value)(Code)(Java Doc)
protected void setSource(Object source, int index)(Code)(Java Doc)
protected void setSources(List sourceList)(Code)(Java Doc)
public static int tileXToX(int tx, int tileGridXOffset, int tileWidth)(Code)(Java Doc)
public int tileXToX(int tx)(Code)(Java Doc)
public static int tileYToY(int ty, int tileGridYOffset, int tileHeight)(Code)(Java Doc)
public int tileYToY(int ty)(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public static PlanarImage wrapRenderedImage(RenderedImage image)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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