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();
}
}
public static DataRaster wrapAsGeoreferencedRaster(BufferedImage image, AVList params) {
if (null == image) {
String message = Logging.getMessage("nullValue.ImageIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (null == params) {
String msg = Logging.getMessage("nullValue.AVListIsNull");
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
if (params.hasKey(AVKey.WIDTH)) {
int width = (Integer) params.getValue(AVKey.WIDTH);
if (width != image.getWidth()) {
String msg =
Logging.getMessage("generic.InvalidWidth", "" + width + "!=" + image.getWidth());
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
}
if (params.hasKey(AVKey.HEIGHT)) {
int height = (Integer) params.getValue(AVKey.HEIGHT);
if (height != image.getHeight()) {
String msg =
Logging.getMessage("generic.InvalidHeight", "" + height + "!=" + image.getHeight());
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
}
if (!params.hasKey(AVKey.SECTOR)) {
String msg = Logging.getMessage("generic.MissingRequiredParameter", AVKey.SECTOR);
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
Sector sector = (Sector) params.getValue(AVKey.SECTOR);
if (null == sector) {
String msg = Logging.getMessage("nullValue.SectorIsNull");
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
if (!params.hasKey(AVKey.COORDINATE_SYSTEM)) {
// assume Geodetic Coordinate System
params.setValue(AVKey.COORDINATE_SYSTEM, AVKey.COORDINATE_SYSTEM_GEOGRAPHIC);
}
String cs = params.getStringValue(AVKey.COORDINATE_SYSTEM);
if (!params.hasKey(AVKey.PROJECTION_EPSG_CODE)) {
if (AVKey.COORDINATE_SYSTEM_GEOGRAPHIC.equals(cs)) {
// assume WGS84
params.setValue(AVKey.PROJECTION_EPSG_CODE, GeoTiff.GCS.WGS_84);
} else {
String msg =
Logging.getMessage("generic.MissingRequiredParameter", AVKey.PROJECTION_EPSG_CODE);
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
}
// if PIXEL_WIDTH is specified, we are not overriding it because UTM images
// will have different pixel size
if (!params.hasKey(AVKey.PIXEL_WIDTH)) {
if (AVKey.COORDINATE_SYSTEM_GEOGRAPHIC.equals(cs)) {
double pixelWidth = sector.getDeltaLonDegrees() / (double) image.getWidth();
params.setValue(AVKey.PIXEL_WIDTH, pixelWidth);
} else {
String msg = Logging.getMessage("generic.MissingRequiredParameter", AVKey.PIXEL_WIDTH);
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
}
// if PIXEL_HEIGHT is specified, we are not overriding it
// because UTM images will have different pixel size
if (!params.hasKey(AVKey.PIXEL_HEIGHT)) {
if (AVKey.COORDINATE_SYSTEM_GEOGRAPHIC.equals(cs)) {
double pixelHeight = sector.getDeltaLatDegrees() / (double) image.getHeight();
params.setValue(AVKey.PIXEL_HEIGHT, pixelHeight);
} else {
String msg = Logging.getMessage("generic.MissingRequiredParameter", AVKey.PIXEL_HEIGHT);
Logging.logger().finest(msg);
throw new IllegalArgumentException(msg);
}
}
if (!params.hasKey(AVKey.PIXEL_FORMAT)) {
params.setValue(AVKey.PIXEL_FORMAT, AVKey.IMAGE);
} else if (!AVKey.IMAGE.equals(params.getStringValue(AVKey.PIXEL_FORMAT))) {
String msg =
Logging.getMessage(
"generic.UnknownValueForKey",
params.getStringValue(AVKey.PIXEL_FORMAT),
AVKey.PIXEL_FORMAT);
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
if (!params.hasKey(AVKey.ORIGIN) && AVKey.COORDINATE_SYSTEM_GEOGRAPHIC.equals(cs)) {
// set UpperLeft corner as the origin, if not specified
LatLon origin = new LatLon(sector.getMaxLatitude(), sector.getMinLongitude());
params.setValue(AVKey.ORIGIN, origin);
}
if (!params.hasKey(AVKey.DATE_TIME)) {
// add NUL (\0) termination as required by TIFF v6 spec (20 bytes length)
String timestamp = String.format("%1$tY:%1$tm:%1$td %tT\0", Calendar.getInstance());
params.setValue(AVKey.DATE_TIME, timestamp);
}
if (!params.hasKey(AVKey.VERSION)) {
params.setValue(AVKey.VERSION, Version.getVersion());
}
boolean hasAlpha = (null != image.getColorModel() && image.getColorModel().hasAlpha());
params.setValue(AVKey.RASTER_HAS_ALPHA, hasAlpha);
return new BufferedImageRaster(sector, image, params);
}