Examples of javax.media.jai.PlanarImage

javax.media.jai.PlanarImage
sun.com/j2se/1.5.0/docs/guide/refobs/"> http://java.sun.com/j2se/1.5.0/docs/guide/refobs/ for more information. These classes include weak references that allow the Garbage Collector (GC) to collect objects they reference, setting the reference to null in the process.
The reference problem requires us to be careful about how we define the reachability of directed acyclic graph (DAG) nodes. If we were to allow nodes to be reached by arbitrary graph traversal, we would be unable to garbage collect any subgraphs of an active graph at all since any node may be reached from any other. Instead, we define the set of reachable nodes as those that may be accessed directly from a reference in user code, or that are the source (not sink) of a reachable node. Reachable nodes are always accessible, whether they are reached by traversing upwards or downwards in the DAG.
A DAG may also contain nodes that are not reachable, that is, they require a downward traversal at some point. For example, assume a node A is reachable, and a call to A.getSinks() yields a Vector containing a reference to a previously unreachable node B. The node B naturally becomes reachable by virtue of the new user reference pointing to it. However, if the user were to relinquish that reference, the node might be garbage collected, and a future call to A.getSinks() might no longer include B in its return value.
Because the set of sinks of a node is inherently unstable, only the getSinks method is provided for external access to the sink vector at a node. A hypothetical method such as getSink or getNumSinks would produce confusing results should a sink be garbage collected between that call and a subsequent call to getSinks. @see java.awt.image.RenderedImage @see java.lang.ref.Reference @see java.lang.ref.WeakReference @see ImageJAI @see OpImage @see RenderedImageAdapter @see SnapshotImage @see TiledImage

               args,
               mergedHints);


  // If the operation requests immediate rendering, do so.
        if (odesc.isImmediate()) {
            PlanarImage im = null;
            im = op.getRendering();


            if (im == null) {
    // Op could not be rendered, return null.
                return null;

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                // will be retained in the new CollectionImage.
                ArrayList commonNodes = new ArrayList(commonSources.size());
                it = oldRendering.iterator();
                while(it.hasNext()) {
                    RenderedOp node = (RenderedOp)it.next();
                    PlanarImage source = (PlanarImage)node.getSourceImage(0);
                    if(commonSources.contains(source)) {
                        commonNodes.add(node);
                    }
                }


                // Create a new CollectionImage.
                updatedCollection =
                    new AddConstToCollectionOpImage(newSource, newHints,
                                                    constants);


                // Remove from the new CollectionImage all nodes that
                // are common with the old CollectionImage.
                ArrayList newNodes = new ArrayList(oldRendering.size() -
                                                   commonSources.size());
                it = updatedCollection.iterator();
                while(it.hasNext()) {
                    RenderedOp node = (RenderedOp)it.next();
                    PlanarImage source = (PlanarImage)node.getSourceImage(0);
                    if(commonSources.contains(source)) {
                        it.remove();
                    }
                }

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            // Retrieve the Interpolation object.
            Interpolation interp = (Interpolation)pb.getObjectParameter(4);


            // Determine the effective source bounds.
            Rectangle srcBounds = null;
            PlanarImage dst = op.getRendering();
            if (dst instanceof GeometricOpImage &&
                ((GeometricOpImage)dst).getBorderExtender() == null) {
                srcBounds =
                    new Rectangle(src.getMinX() + interp.getLeftPadding(),
                                  src.getMinY() + interp.getTopPadding(),

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            RenderedOp op = (RenderedOp)opNode;


            ParameterBlock pb = op.getParameterBlock();


            // Retrieve the rendered source image and its ROI.
            PlanarImage src = (PlanarImage)pb.getRenderedSource(0);
            Object property = src.getProperty("ROI");
            if (property == null ||
                property.equals(java.awt.Image.UndefinedProperty) ||
                !(property instanceof ROI)) {
                return java.awt.Image.UndefinedProperty;
            }

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        // Cobble source image(s).
        int numSources = getNumSources();
        Raster[] rasterSources = new Raster[numSources];
        for(int i = 0; i < numSources; i++) {
            PlanarImage source = getSource(i);
            Rectangle srcRect = mapDestRect(destRect, i);
            rasterSources[i] = source.getData(srcRect);
        }


        // Compute the image.
        computeImage(rasterSources, dest, destRect);


        for (int i = 0; i < numSources; i++) {
            Raster sourceData = rasterSources[i];
            if(sourceData != null) {
                PlanarImage source = getSourceImage(i);


                // Recycle the source tile
                if(source.overlapsMultipleTiles(sourceData.getBounds())) {
                    recycleTile(sourceData);
                }
            }
        }

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     */
    public Point[] getTileDependencies(int tileX, int tileY,
                                       int sourceIndex) {
        // Compute the tile dependencies only the first time that this
        // method is invoked.
        PlanarImage source = getSource(sourceIndex);


        int minTileX = source.getMinTileX();
        int minTileY = source.getMinTileY();
        int maxTileX = minTileX + source.getNumXTiles() - 1;
        int maxTileY = minTileY + source.getNumYTiles() - 1;


        Point[] tileDependencies =
            new Point[(maxTileX - minTileX + 1)*(maxTileY - minTileY + 1)];


        int count = 0;

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      }
      ROI srcROI = (ROI)property;


      // Determine the effective source bounds.
      Rectangle srcBounds = null;
      PlanarImage dst = op.getRendering();
      if(dst instanceof WarpOpImage && !((OpImage)dst).hasExtender(0)) {
    WarpOpImage warpIm = (WarpOpImage)dst;
    srcBounds =
        new Rectangle(src.getMinX() + warpIm.getLeftPadding(),
          src.getMinY() + warpIm.getTopPadding(),

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            // Retrieve the Interpolation object.
            Interpolation interp = (Interpolation)pb.getObjectParameter(1);


            // Determine the effective source bounds.
            Rectangle srcBounds = null;
            PlanarImage dst = op.getRendering();
            if (dst instanceof GeometricOpImage &&
                ((GeometricOpImage)dst).getBorderExtender() == null) {
                srcBounds =
                    new Rectangle(src.getMinX() + interp.getLeftPadding(),
                                  src.getMinY() + interp.getTopPadding(),

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        if (name.equals("roi")) {
            ParameterBlock pb = op.getParameterBlock();


            // Retrieve the rendered source image and its ROI.
            PlanarImage src = (PlanarImage)pb.getRenderedSource(0);
            Object property = src.getProperty("ROI");
            if (property == null ||
                property.equals(java.awt.Image.UndefinedProperty) ||
                !(property instanceof ROI)) {
                return null;
            }
            ROI srcROI = (ROI)property;


            // Determine the effective source bounds.
            Rectangle srcBounds = null;
            PlanarImage dst = op.getRendering();
            if(dst instanceof GeometricOpImage &&
               ((GeometricOpImage)dst).getBorderExtender() == null) {
                GeometricOpImage geomIm = (GeometricOpImage)dst;
                Interpolation interp = geomIm.getInterpolation();
                srcBounds =

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            // Retrieve the Interpolation object.
            Interpolation interp = (Interpolation)pb.getObjectParameter(2);


            // Determine the effective source bounds.
            Rectangle srcBounds = null;
            PlanarImage dst = op.getRendering();
            if (dst instanceof GeometricOpImage &&
                ((GeometricOpImage)dst).getBorderExtender() == null) {
                srcBounds =
                    new Rectangle(src.getMinX() + interp.getLeftPadding(),
                                  src.getMinY() + interp.getTopPadding(),

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