Examples of javax.media.jai.TiledImage

javax.media.jai.TiledImage
A concrete implementation of WritableRenderedImage.
TiledImage is the main class for writable images in JAI. TiledImage provides a straightforward implementation of the WritableRenderedImage interface, taking advantage of that interface's ability to describe images with multiple tiles. The tiles of a WritableRenderedImage must share a SampleModel, which determines their width, height, and pixel format. The tiles form a regular grid, which may occupy any rectangular region of the plane. Tile pixels the locations of which lie outside the stated image bounds have undefined values.
The contents of a TiledImage are defined by a single RenderedImage source provided by means of one of the set() methods or to a constructor which accepts a RenderedImage. The set() methods provide a way to selectively overwrite a portion of a TiledImage, possibly using a region of interest (ROI).
TiledImage also supports direct manipulation of pixels by means of the getWritableTile() method. This method returns a WritableRaster that can be modified directly. Such changes become visible to readers according to the regular thread synchronization rules of the Java virtual machine; JAI makes no additional guarantees. When a writer is finished modifying a tile, it should call releaseWritableTile(). A shortcut is to call setData(), which copies a rectangular region or an area specified by a ROI from a supplied Raster directly into the TiledImage.
A final way to modify the contents of a TiledImage is through calls to the object returned by createGraphics(). This returns a Graphics2D object that can be used to draw line art, text, and images in the usual Abstract Window Toolkit (AWT) manner.
A TiledImage does not attempt to maintain synchronous state on its own. That task is left to SnapshotImage. If a synchronous (unchangeable) view of a TiledImage is desired, its createSnapshot() method must be used. Otherwise, changes due to calls to set() or direct writing of tiles by objects that call getWritableTile() will be visible.
TiledImage does not actually cause its tiles to be copied from the specified source until their contents are demanded. Once a tile has been computed, its contents may be discarded if it can be determined that it can be recomputed identically from the source. The lockTile() method forces a tile to be computed and maintained for the lifetime of the TiledImage. @see SnapshotImage @see java.awt.image.RenderedImage @see java.awt.image.WritableRenderedImage


        // Create a grayscale colormodel.
        ComponentColorModel colorModel = new ComponentColorModel(
                new ICC_ColorSpace(ICC_Profile.getInstance(ColorSpace.CS_GRAY)),
                false, false, Transparency.OPAQUE, DataBuffer.TYPE_DOUBLE);
        TiledImage tiledImage = new TiledImage(0, 0, width, height, 0, 0,
                sampleModel, colorModel);
        tiledImage.setData(raster);


        ParameterBlock parameters = new ParameterBlock();
        parameters.addSource(tiledImage);


        switch (_dataFormat) {

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            // Ensure that the image has the correct color space information
            WritableRaster r = img.getRaster();
            ColorSpace cs = ColorSpace.getInstance( ColorSpace.CS_LINEAR_RGB );
            ColorModel targetCM = new ComponentColorModel( cs, new int[]{16,16,16},
                    false, false, Transparency.OPAQUE, DataBuffer.TYPE_USHORT );
            rawImage = new TiledImage( new BufferedImage( targetCM, r, 
                    true, null ), 256, 256 );


            
            final float[] DEFAULT_KERNEL_1D = {0.25f,0.5f,0.25f};
            ParameterBlock pb = new ParameterBlock();

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        }


        //_dataType = _getDataType();
        SampleModel sampleModel = _initSampleModel(tileWidth, tileHeight);
        ColorModel colorModel = _initColorModel(sampleModel);
        TiledImage tiledImage = new TiledImage(0, 0, tileWidth, tileHeight, 0, 0, sampleModel, colorModel);
        Point origin = new Point(0, 0);
        Raster raster = RasterFactory.createWritableRaster(sampleModel, origin);


        try {
            raster = _fitsData.getPreviewImage(raster, factor);
        } catch (EOFException e) {
            //System.out.println("XXX FITSImage._getPreviewImage(): warning: " + e.toString());
        } catch (IndexOutOfBoundsException e) {
            //System.out.println("XXX FITSImage._getPreviewImage(): warning: " + e.toString());
        } catch (IOException e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }
        if (raster == null) {
            return null;
        }


        tiledImage.setData(raster);
        return tiledImage;
    }

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                            /*
                             TODO: JAI seems to have problems in doing convolutions
                             for large image tiles. Split image to reasonably sized
                             tiles as a workaround for this.
                             */
                            ri = new TiledImage( ri, 256, 256 );
                            image =  new RenderedImageAdapter( ri );
                            originalSampleModel = image.getSampleModel();
                            originalColorModel = image.getColorModel();
                            final float[] DEFAULT_KERNEL_1D = {0.25f,0.5f,0.25f};
                            ParameterBlock pb = new ParameterBlock();

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    private void readObject(ObjectInputStream in)
        throws IOException, ClassNotFoundException {
        in.defaultReadObject();
        theObject = in.readObject();
        if(isWritable) {
            theObject = new TiledImage((RenderedImage)theObject, true);
        }
    }

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                // Create an ROI in destination rendered space.
                ROIShape roi = new ROIShape(at.createTransformedShape(rgn));


                // Create a TiledImage to contain the masked result.
                TiledImage ti = new TiledImage(rendering.getMinX(),
                                               rendering.getMinY(),
                                               rendering.getWidth(),
                                               rendering.getHeight(),
                                               rendering.getTileGridXOffset(),
                                               rendering.getTileGridYOffset(),
                                               rendering.getSampleModel(),
                                               rendering.getColorModel());


                // Set the TiledImage data source to the rendering.
                ti.set(rendering, roi);


                // Create a constant-valued image for the background.
                pb = new ParameterBlock();
                pb.add((float)ti.getWidth());
                pb.add((float)ti.getHeight());
                Byte[] bandValues =
                    new Byte[ti.getSampleModel().getNumBands()];
                for(int b = 0; b < bandValues.length; b++) {
                    bandValues[b] = new Byte((byte)255);
                }
                pb.add(bandValues);


                ImageLayout il = new ImageLayout();
                il.setSampleModel(ti.getSampleModel());
                RenderingHints rh = new RenderingHints(JAI.KEY_IMAGE_LAYOUT,
                                                       il);


                PlanarImage constImage = JAI.create("constant", pb, rh);


                // Compute a complement ROI.
                ROI complementROI =
                    (new ROIShape(ti.getBounds())).subtract(roi);;


                // Fill the background.
                int maxTileY = ti.getMaxTileY();
                int maxTileX = ti.getMaxTileX();
                for(int j = ti.getMinTileY(); j <= maxTileY; j++) {
                    for(int i = ti.getMinTileX(); i <= maxTileX; i++) {
                        if(!roi.intersects(ti.getTileRect(i, j))) {
                            ti.setData(constImage.getTile(i, j),
                                       complementROI);
                        }
                    }
                }

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/*     */   private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException
/*     */   {
/* 117 */     in.defaultReadObject();
/* 118 */     this.theObject = in.readObject();
/* 119 */     if (this.isWritable)
/* 120 */       this.theObject = new TiledImage((RenderedImage)this.theObject, true);
/*     */   }

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/*      */ 
/* 1128 */         at.preConcatenate(renderContext.getTransform());
/*      */ 
/* 1131 */         ROIShape roi = new ROIShape(at.createTransformedShape(rgn));
/*      */ 
/* 1134 */         TiledImage ti = new TiledImage(rendering.getMinX(), rendering.getMinY(), rendering.getWidth(), rendering.getHeight(), rendering.getTileGridXOffset(), rendering.getTileGridYOffset(), rendering.getSampleModel(), rendering.getColorModel());
/*      */ 
/* 1144 */         ti.set(rendering, roi);
/*      */ 
/* 1147 */         pb = new ParameterBlock();
/* 1148 */         pb.add(ti.getWidth());
/* 1149 */         pb.add(ti.getHeight());
/* 1150 */         Byte[] bandValues = new Byte[ti.getSampleModel().getNumBands()];
/*      */ 
/* 1152 */         for (int b = 0; b < bandValues.length; b++) {
/* 1153 */           bandValues[b] = new Byte(-1);
/*      */         }
/* 1155 */         pb.add(bandValues);
/*      */ 
/* 1157 */         ImageLayout il = new ImageLayout();
/* 1158 */         il.setSampleModel(ti.getSampleModel());
/* 1159 */         RenderingHints rh = new RenderingHints(JAI.KEY_IMAGE_LAYOUT, il);
/*      */ 
/* 1162 */         PlanarImage constImage = JAI.create("constant", pb, rh);
/*      */ 
/* 1165 */         ROI complementROI = new ROIShape(ti.getBounds()).subtract(roi);
/*      */ 
/* 1169 */         int maxTileY = ti.getMaxTileY();
/* 1170 */         int maxTileX = ti.getMaxTileX();
/* 1171 */         for (int j = ti.getMinTileY(); j <= maxTileY; j++) {
/* 1172 */           for (int i = ti.getMinTileX(); i <= maxTileX; i++) {
/* 1173 */             if (!roi.intersects(ti.getTileRect(i, j))) {
/* 1174 */               ti.setData(constImage.getTile(i, j), complementROI);
/*      */             }
/*      */ 
/*      */           }
/*      */ 
/*      */         }

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    int len = width * height;
    Point origin = new Point(0, 0);
    SampleModel sampleModel = RasterFactory.createBandedSampleModel(
        DataBuffer.TYPE_FLOAT, width, height, numBands);
    ColorModel colorModel = PlanarImage.createColorModel(sampleModel);
    TiledImage tiledImage = new TiledImage(0, 0, width, height, 0, 0,
        sampleModel, colorModel);
    DataBufferFloat dataBuffer = new DataBufferFloat(theData, len);
    Raster raster = RasterFactory.createWritableRaster(sampleModel,
        dataBuffer, origin);
    tiledImage.setData(raster);
    RenderedImageAdapter img = new RenderedImageAdapter(
        (RenderedImage) tiledImage);
    return img;
  }

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        assertEquals(rasterLayout.getTileWidth(), 0);
        assertEquals(rasterLayout.getTileHeight(), 0);
        
        SampleModel sm = new BandedSampleModel(DataBuffer.TYPE_BYTE, 50, 50, 3);
        ColorModel cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
        TiledImage ri = new TiledImage(10, 10, 50, 50, 5, 5, sm, cm);
        
        RasterLayout rasterLayoutToBeCloned = new RasterLayout(ri);
        RasterLayout rasterLayout3 = new RasterLayout(ri);
        RasterLayout rasterLayout2 = (RasterLayout) rasterLayoutToBeCloned.clone();

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