Examples of javax.media.jai.NullOpImage

javax.media.jai.NullOpImage
A trivial OpImage subclass that simply transmits its source unchanged. This may be useful when an interface requires an OpImage but another sort of RenderedImage (such as a BufferedImage or TiledImage) is available. Additionally, NullOpImage is able to make use of JAI's tile caching mechanisms.
Methods that get or set properties are implemented to forward the requests to the source image; no independent property information is stored in the NullOpImage itself. @see PointOpImage

                    hints = new RenderingHints((Map)renderHints);
                    hints.remove(JAI.KEY_TILE_CACHE);
                }


                // Only the ColorModel is changing.
                return new NullOpImage(src, layout, hints,
                                       OpImage.OP_IO_BOUND);
            }
        }


  if (isDataTypeChange == true) {

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/*     */ 
/* 181 */         im = null;
/*     */       }
/*     */ 
/* 185 */       if (im != null) {
/* 186 */         return new NullOpImage(im, layout, renderHints, bound);
/*     */       }
/*     */     }
/*     */ 
/* 190 */     return null;
/*     */   }

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/* 132 */       if ((hints != null) && (hints.containsKey(JAI.KEY_TILE_CACHE))) {
/* 133 */         hints = new RenderingHints(renderHints);
/* 134 */         hints.remove(JAI.KEY_TILE_CACHE);
/*     */       }
/*     */ 
/* 138 */       return new NullOpImage(src, layout, hints, 2);
/*     */     }
/*     */ 
/* 143 */     if (isDataTypeChange == true)
/*     */     {
/* 146 */       if (renderHints == null) {

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         *          As a slight optimisation, we skip the "Null" operation since such image
         *          may be the result of some operation (e.g. "Colormap").
         */
        RenderedImage image = coverage.image;
        while (image instanceof NullOpImage) {
            final NullOpImage op = (NullOpImage) image;
            if (op.getNumSources() != 1) {
                break;
            }
            image = op.getSourceImage(0);
        }
        final SampleModel           sourceModel = image.getSampleModel();
        final int                      numBands = sourceModel.getNumBands();
        final GridSampleDimension[] sourceBands = coverage.sampleDimensions;
        final GridSampleDimension[] targetBands = sourceBands.clone();

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         * Gives the color model to the image layout and creates a new image using the Null
         * operation, which merely propagates its first source along the operation chain
         * unmodified (except for the ColorModel given in the layout in this case).
         */
        final ImageLayout layout = new ImageLayout().setColorModel(model);
        final RenderedImage newImage = new NullOpImage(image, layout, null, OpImage.OP_COMPUTE_BOUND);
        final GridCoverage2D target = CoverageFactoryFinder.getGridCoverageFactory(GeoTools.getDefaultHints()).create(
                    visual.getName(), newImage,
                    visual.getCoordinateReferenceSystem2D(),
                    visual.getGridGeometry().getGridToCRS(),
                    bands, new GridCoverage[] { visual }, null);

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Related Classes of javax.media.jai.NullOpImage

com.sun.media.jai.opimage.CodecRIFUtil

com.sun.media.jai.opimage.FormatCRIF

com.sun.media.jai.opimage.StreamRIF

org.geotools.coverage.grid.ViewsManager

org.geotools.coverage.processing.operation.IndexColorOperation

java.awt.RenderingHints

java.awt.image.ColorModel

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