private void renderNotRenderedTiles(
Graphics2D destination,
IProgressMonitor monitor,
WMTRenderJob renderJob,
TileRange range,
RasterSymbolizer style,
int tileWorth,
int thisid,
Set<String> notRenderedTiles,
Set<String> renderedTiles)
throws Exception {
checkCancelState(monitor, thisid, false);
// set the listener on the tile range
range.addListener(listener);
// load the missing tiles by sending requests for them
range.loadTiles(monitor);
// block until all the missing tiles have come through (and draw them
// as they are added to the blocking queue
while (!notRenderedTiles.isEmpty()) {
// check that the rendering is not canceled
checkCancelState(monitor, thisid, true);
if (testing) {
System.out.println("BLOCKED: " + thisid); // $NON-NLS-1$
System.out.println(
"waiting on: " + notRenderedTiles.size() + " tiles"); // $NON-NLS-1$ //$NON-NLS-2$
}
Tile tile = null;
try {
Object element = null;
/* get the next tile that is ready to render,
* check after 1 sec if the rendering was canceled
*/
while ((element = tilesToDraw_queue.poll(1000, TimeUnit.MILLISECONDS)) == null) {
checkCancelState(monitor, thisid, true);
}
tile = (Tile) element;
if (testing) {
System.out.println("removed from queue: " + tile.getId()); // $NON-NLS-1$
}
} catch (InterruptedException ex) {
if (testing) {
System.out.println("InterruptedException trying to take: " + ex); // $NON-NLS-1$
}
}
if (testing) {
System.out.println("UNBLOCKED!!!: " + thisid); // $NON-NLS-1$
}
// check that the rendering is not canceled again after block
checkCancelState(monitor, thisid, true);
// check that the tile's bounds are within the current
// context's bounds (if it's not, don't bother drawing it) and also
// only draw tiles that haven't already been drawn (panning fast
// can result in listeners being notified the same tile is ready multiple
// times but we don't want to draw it more than once per render cycle)
// ReferencedEnvelope viewbounds = getContext().getViewportModel().getBounds();
ReferencedEnvelope viewbounds =
renderJob.projectMapToTileCrs(context.getViewportModel().getBounds());
if (tile != null
&& tile.getBufferedImage() != null
&& viewbounds != null
&& viewbounds.intersects(tile.getBounds())
&& !renderedTiles.contains(tile.getId())
&& notRenderedTiles.contains(tile.getId())) {
try {
renderedTiles.add(tile.getId());
renderTile(destination, (WMTTile) tile, style, renderJob);
} catch (Exception exc) {
WMTPlugin.log(
"[BasicWMTRender.render] renderTile failed (2): " + tile.getId(), exc); // $NON-NLS-1$
}
monitor.worked(tileWorth); // inc the monitor work by 1 tile
setState(RENDERING); // tell renderer new data is ready
}
// remove the tile from the not rendered list regardless
// of whether it was actually drawn (this is to prevent
// this render cycle from blocking endlessly waiting for tiles
// that either didn't return or had some error)
notRenderedTiles.remove(tile.getId());
}
}
