private BufferWrapperRaster readTileRaster(MeshTile tile) { File file = new File(this.dataDescriptor.getFileStoreLocation(), tile.getPath()); if (!file.exists()) return null; DataSource source = new BasicDataSource(file); source.setValue(AVKey.SECTOR, tile.getSector()); BILRasterReader reader = new BILRasterReader(); DataRaster[] rasters; try { rasters = reader.read(source); } catch (Exception e) { e.printStackTrace(); return null; } return (BufferWrapperRaster) rasters[0]; }
protected void importImagery() { try { // Read the data and save it in a temp file. File sourceFile = ExampleUtil.saveResourceToTempFile(IMAGE_PATH, ".tif"); // Create a raster reader to read this type of file. The reader is created from the // currently // configured factory. The factory class is specified in the Configuration, and a different // one can be // specified there. DataRasterReaderFactory readerFactory = (DataRasterReaderFactory) WorldWind.createConfigurationComponent(AVKey.DATA_RASTER_READER_FACTORY_CLASS_NAME); DataRasterReader reader = readerFactory.findReaderFor(sourceFile, null); // Before reading the raster, verify that the file contains imagery. AVList metadata = reader.readMetadata(sourceFile, null); if (metadata == null || !AVKey.IMAGE.equals(metadata.getStringValue(AVKey.PIXEL_FORMAT))) throw new Exception("Not an image file."); // Read the file into the raster. read() returns potentially several rasters if there are // multiple // files, but in this case there is only one so just use the first element of the returned // array. DataRaster[] rasters = reader.read(sourceFile, null); if (rasters == null || rasters.length == 0) throw new Exception("Can't read the image file."); DataRaster raster = rasters[0]; // Determine the sector covered by the image. This information is in the GeoTIFF file or // auxiliary // files associated with the image file. final Sector sector = (Sector) raster.getValue(AVKey.SECTOR); if (sector == null) throw new Exception("No location specified with image."); // Request a sub-raster that contains the whole image. This step is necessary because only // sub-rasters // are reprojected (if necessary); primary rasters are not. int width = raster.getWidth(); int height = raster.getHeight(); // getSubRaster() returns a sub-raster of the size specified by width and height for the // area indicated // by a sector. The width, height and sector need not be the full width, height and sector // of the data, // but we use the full values of those here because we know the full size isn't huge. If it // were huge // it would be best to get only sub-regions as needed or install it as a tiled image layer // rather than // merely import it. DataRaster subRaster = raster.getSubRaster(width, height, sector, null); // Tne primary raster can be disposed now that we have a sub-raster. Disposal won't affect // the // sub-raster. raster.dispose(); // Verify that the sub-raster can create a BufferedImage, then create one. if (!(subRaster instanceof BufferedImageRaster)) throw new Exception("Cannot get BufferedImage."); BufferedImage image = ((BufferedImageRaster) subRaster).getBufferedImage(); // The sub-raster can now be disposed. Disposal won't affect the BufferedImage. subRaster.dispose(); // Create a SurfaceImage to display the image over the specified sector. final SurfaceImage si1 = new SurfaceImage(image, sector); // On the event-dispatch thread, add the imported data as an SurfaceImageLayer. SwingUtilities.invokeLater( new Runnable() { public void run() { // Add the SurfaceImage to a layer. SurfaceImageLayer layer = new SurfaceImageLayer(); layer.setName("Imported Surface Image"); layer.setPickEnabled(false); layer.addRenderable(si1); // Add the layer to the model and update the application's layer panel. insertBeforeCompass(AppFrame.this.getWwd(), layer); AppFrame.this.getLayerPanel().update(AppFrame.this.getWwd()); // Set the view to look at the imported image. ExampleUtil.goTo(getWwd(), sector); } }); } catch (Exception e) { e.printStackTrace(); } }