@Override
protected boolean handleElevations(
Globe globe, TextureTile tile, Sector sector, BufferWrapper[] elevations) {
int width = tile.getLevel().getTileWidth();
int height = tile.getLevel().getTileHeight();
double[] minmax = getMinMax(elevations[4], elevationModel.getMissingDataSignal());
byte[][] bytes =
elevationsToTexture(width, height, globe, sector, elevations, minmax[0], minmax[1]);
File file = WorldWind.getDataFileStore().newFile(tile.getPath());
return saveTexture(file, bytes, width, height, minmax[0], minmax[1]);
}
@Override
protected Texture createTexture(TextureTile tile) {
if (!(tile instanceof MinMaxTextureTile)) {
String message = "Tile is not instance of " + MinMaxTextureTile.class;
Logging.logger().severe(message);
throw new IllegalStateException(message);
}
MinMaxTextureTile mmtt = (MinMaxTextureTile) tile;
return new ElevationTexture(
tile.getTextureData(), mmtt.getMinElevation(), mmtt.getMaxElevation());
}
@Override
protected boolean loadTexture(TextureTile tile, URL textureURL) {
if (!(tile instanceof MinMaxTextureTile)) {
Logging.logger().severe("Tile is not instance of " + MinMaxTextureTile.class);
getLevels().markResourceAbsent(tile);
return false;
}
synchronized (fileLock) {
InputStream is = null;
try {
is = textureURL.openStream();
DataInputStream dis = new DataInputStream(is);
int width = dis.readInt();
int height = dis.readInt();
int bands = dis.readInt();
double minElevation = dis.readDouble();
double maxElevation = dis.readDouble();
byte[][] bytes = new byte[bands][];
for (int i = 0; i < bands; i++) {
bytes[i] = new byte[width * height];
is.read(bytes[i]);
}
DataBuffer db = new DataBufferByte(bytes, width * height);
SampleModel sm = new BandedSampleModel(DataBuffer.TYPE_BYTE, width, height, bands);
Raster raster = Raster.createRaster(sm, db, null);
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB_PRE);
image.setData(raster);
TextureData textureData = TextureIO.newTextureData(image, isUseMipMaps());
if (textureData == null) {
throw new Exception("Could not create texture data for " + textureURL);
}
((MinMaxTextureTile) tile).setMinElevation(minElevation);
((MinMaxTextureTile) tile).setMaxElevation(maxElevation);
tile.setTextureData(textureData);
// if (tile.getLevelNumber() != 0 || !this.isRetainLevelZeroTiles())
addTileToCache(tile);
getLevels().unmarkResourceAbsent(tile);
firePropertyChange(AVKey.LAYER, null, this);
return true;
} catch (Exception e) {
// Assume that something's wrong with the file and delete it.
gov.nasa.worldwind.WorldWind.getDataFileStore().removeFile(textureURL);
getLevels().markResourceAbsent(tile);
String message = Logging.getMessage("generic.DeletedCorruptDataFile", textureURL);
Logging.logger().info(message + ":" + e.getLocalizedMessage());
return false;
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
}
}
}
}
}
