public void composeElevations(Sector sector, List <T> latlons, int tileWidth, double[] buffer)
where T : LatLon
{
if (sector == null)
{
String msg = Logging.getMessage("nullValue.SectorIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
if (latlons == null)
{
String msg = Logging.getMessage("nullValue.LatLonListIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
if (buffer == null)
{
String msg = Logging.getMessage("nullValue.ElevationsBufferIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
if (buffer.length < latlons.size() || tileWidth > latlons.size())
{
String msg = Logging.getMessage("ElevationModel.ElevationsBufferTooSmall", latlons.size());
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
ElevationCompositionTile tile = new ElevationCompositionTile(sector, this.getLevels().getLastLevel(),
tileWidth, latlons.size() / tileWidth);
this.downloadElevations(tile);
tile.setElevations(this.readElevations(tile.getFile().toURI().toURL()), this);
for (int i = 0; i < latlons.size(); i++)
{
LatLon ll = latlons.get(i);
if (ll == null)
{
continue;
}
double value = this.lookupElevation(ll.getLatitude(), ll.getLongitude(), tile);
// If an elevation at the given location is available, then write that elevation to the destination buffer.
// Otherwise do nothing.
if (value != this.getMissingDataSignal())
{
buffer[i] = value;
}
}
}
protected void downloadElevations(ElevationCompositionTile tile)
{
URL url = tile.getResourceURL();
Retriever retriever = new HTTPRetriever(url, new CompositionRetrievalPostProcessor(tile.getFile()));
retriever.setConnectTimeout(10000);
retriever.setReadTimeout(60000);
retriever.call();
}