private TileRange createTileRange(
WMTSource wmtSource, WMTRenderJob renderJob, Map<String, Tile> tileList) {
TileRange range;
TileSet tileset = new WMTTileSetWrapper(wmtSource);
String value =
CatalogPlugin.getDefault()
.getPreferenceStore()
.getString(PreferenceConstants.P_WMSCTILE_CACHING);
if (value.equals(WMSCTileCaching.ONDISK.toString())) {
String dir =
CatalogPlugin.getDefault()
.getPreferenceStore()
.getString(PreferenceConstants.P_WMSCTILE_DISKDIR);
WMTTileImageReadWriter tileReadWriter = new WMTTileImageReadWriter(dir);
range =
new TileRangeOnDisk(
null,
tileset,
renderJob.getMapExtentTileCrs(),
tileList,
requestTileWorkQueue,
writeTileWorkQueue,
tileReadWriter);
} else {
range =
new TileRangeInMemory(
null, tileset, renderJob.getMapExtentTileCrs(), tileList, requestTileWorkQueue);
}
return range;
}
/**
* Clears the area of the tile on the graphics
*
* @param graphics graphics to draw onto
* @param style raster symbolizer
* @throws FactoryException
* @throws TransformException
* @throws RenderException
*/
private void renderBlankTile(Graphics2D graphics, WMTTile tile, WMTRenderJob renderJob)
throws Exception {
if (tile == null) {
return;
}
// get the bounds of the tile and convert to necessary viewport projection
Envelope bnds = renderJob.projectTileToMapCrs(tile.getExtent());
// determine screen coordinates of tiles
Point upperLeft = getContext().worldToPixel(new Coordinate(bnds.getMinX(), bnds.getMinY()));
Point bottomRight = getContext().worldToPixel(new Coordinate(bnds.getMaxX(), bnds.getMaxY()));
Rectangle tileSize = new Rectangle(upperLeft);
tileSize.add(bottomRight);
// render
try {
graphics.setBackground(new Color(255, 255, 255, 0)); // set the tile transparent for now
graphics.clearRect(tileSize.x, tileSize.y, tileSize.width, tileSize.height);
if (TESTING) {
/* for testing draw border around tiles */
graphics.setColor(Color.BLACK);
graphics.drawLine(
(int) tileSize.getMinX(),
(int) tileSize.getMinY(),
(int) tileSize.getMinX(),
(int) tileSize.getMaxY());
graphics.drawLine(
(int) tileSize.getMinX(),
(int) tileSize.getMinY(),
(int) tileSize.getMaxX(),
(int) tileSize.getMinY());
graphics.drawLine(
(int) tileSize.getMaxX(),
(int) tileSize.getMinY(),
(int) tileSize.getMaxX(),
(int) tileSize.getMaxY());
graphics.drawLine(
(int) tileSize.getMinX(),
(int) tileSize.getMaxY(),
(int) tileSize.getMaxX(),
(int) tileSize.getMaxY());
}
} catch (Throwable t) {
WMTPlugin.log("Error Rendering Blank tile. Painting Tile: " + tile.getId(), t); // $NON-NLS-1$
}
}
private Map<String, Tile> checkTooManyTiles(
ILayer layer,
WMTSource wmtSource,
WMTLayerProperties layerProperties,
WMTRenderJob renderJob,
Map<String, Tile> tileList) {
int tilesCount = tileList.size();
if (tilesCount > WMTRenderJob.getTileLimitWarning()) {
// too many tiles, let's use the recommended zoom-level (if it wasn't already used)
Boolean selectionAutomatic = layerProperties.getSelectionAutomatic();
if ((selectionAutomatic != null) && (selectionAutomatic == false)) {
tileList.clear();
tileList =
wmtSource.cutExtentIntoTiles(
renderJob, WMTRenderJob.getScaleFactor(), true, layerProperties);
tilesCount = tileList.size();
}
// show a warning about this
layer.setStatus(ILayer.WARNING);
layer.setStatusMessage(Messages.Render_Warning_TooManyTiles);
WMTPlugin.trace("[BasicWMTRender.render] Set WARNING_TOO_MANY_TILES"); // $NON-NLS-1$
}
if (tilesCount > WMTRenderJob.getTileLimitError()) {
// this is just too much, cancel
WMTPlugin.trace("[BasicWMTRender.render] Set ERROR_TOO_MANY_TILES"); // $NON-NLS-1$
return Collections.emptyMap();
}
return tileList;
}
/**
* @see net.refractions.udig.render.internal.wmsc.basic#renderTile(Graphics2D graphics, WMTTile
* tile, CoordinateReferenceSystem crs, RasterSymbolizer style)
* @param graphics
* @param tile
* @param style
* @throws FactoryException
* @throws TransformException
* @throws RenderException
*/
private void renderTile(
Graphics2D graphics, WMTTile tile, RasterSymbolizer style, WMTRenderJob renderJob)
throws Exception {
if (tile == null || tile.getBufferedImage() == null) {
return;
}
// create a gridcoverage from the tile image
GridCoverageFactory factory = new GridCoverageFactory();
// get the tile bounds in the CRS the tiles were drawn in
ReferencedEnvelope tileBndsMercatorRef =
renderJob.projectTileToTileProjectedCrs(tile.getExtent());
GridCoverage2D coverage =
(GridCoverage2D)
factory.create(
"GridCoverage", tile.getBufferedImage(), tileBndsMercatorRef); // $NON-NLS-1$
Envelope2D coveragebounds = coverage.getEnvelope2D();
// bounds of tile
ReferencedEnvelope bnds =
new ReferencedEnvelope(
coveragebounds.getMinX(),
coveragebounds.getMaxX(),
coveragebounds.getMinY(),
coveragebounds.getMaxY(),
renderJob.getCrsTilesProjected());
// reproject tile bounds to map CRS
bnds = renderJob.projectTileProjectedToMapCrs(bnds);
// determine screen coordinates of tiles
Point upperLeft = getContext().worldToPixel(new Coordinate(bnds.getMinX(), bnds.getMinY()));
Point bottomRight = getContext().worldToPixel(new Coordinate(bnds.getMaxX(), bnds.getMaxY()));
Rectangle tileSize = new Rectangle(upperLeft);
tileSize.add(bottomRight);
// render
try {
CoordinateReferenceSystem crs = getContext().getCRS();
AffineTransform worldToScreen = RendererUtilities.worldToScreenTransform(bnds, tileSize, crs);
GridCoverageRenderer paint = new GridCoverageRenderer(crs, bnds, tileSize, worldToScreen);
paint.paint(graphics, coverage, style);
if (TESTING) {
// if(true){
/* for testing draw border around tiles */
graphics.setColor(Color.BLACK);
graphics.drawLine(
(int) tileSize.getMinX(),
(int) tileSize.getMinY(),
(int) tileSize.getMinX(),
(int) tileSize.getMaxY());
graphics.drawLine(
(int) tileSize.getMinX(),
(int) tileSize.getMinY(),
(int) tileSize.getMaxX(),
(int) tileSize.getMinY());
graphics.drawLine(
(int) tileSize.getMaxX(),
(int) tileSize.getMinY(),
(int) tileSize.getMaxX(),
(int) tileSize.getMaxY());
graphics.drawLine(
(int) tileSize.getMinX(),
(int) tileSize.getMaxY(),
(int) tileSize.getMaxX(),
(int) tileSize.getMaxY());
graphics.drawString(
tile.getId(), ((int) tileSize.getMaxX() - 113), ((int) tileSize.getMaxY() - 113));
}
} catch (Throwable t) {
WMTPlugin.log("Error Rendering tile. Painting Tile " + tile.getId(), t); // $NON-NLS-1$
}
}
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());
}
}
public void render(Graphics2D destination, Envelope bounds, IProgressMonitor monitor)
throws RenderException {
WMTPlugin.trace("[BasicWMTRender.render] is called"); // $NON-NLS-1$
if (monitor == null) {
monitor = new NullProgressMonitor();
}
monitor.beginTask("Render WMT", 100); // $NON-NLS-1$
setState(STARTING);
ILayer layer = null;
try {
layer = getContext().getLayer();
// assume everything will work fine
layer.setStatus(ILayer.DONE);
layer.setStatusMessage(""); // $NON-NLS-1$
WMTSource wmtSource = getWmtSourceFromLayer(layer);
if (wmtSource == null)
throw new UnsupportedOperationException(Messages.Render_Error_NoSource);
// Layer properties
WMTLayerProperties layerProperties =
new WMTLayerProperties((StyleBlackboard) layer.getStyleBlackboard());
// Get map extent, which should be drawn
ReferencedEnvelope mapExtent = getRenderBounds();
if (mapExtent == null) {
mapExtent = context.getViewportModel().getBounds();
}
// Scale
double scale = getContext().getViewportModel().getScaleDenominator();
WMTPlugin.trace("[BasicWMTRender.render] Scale: " + scale); // $NON-NLS-1$
WMTRenderJob renderJob = null;
try {
renderJob = WMTRenderJob.createRenderJob(mapExtent, scale, wmtSource);
} catch (Exception exc) {
throw new UnsupportedOperationException(Messages.Render_Error_Projection);
}
// Find tiles
Map<String, Tile> tileList =
wmtSource.cutExtentIntoTiles(
renderJob, WMTRenderJob.getScaleFactor(), false, layerProperties);
// if we have nothing to display, return
if (tileList.isEmpty()) {
throw new UnsupportedOperationException(Messages.Render_Error_NoData);
}
// check if this are too many tiles
if ((tileList = checkTooManyTiles(layer, wmtSource, layerProperties, renderJob, tileList))
.isEmpty()) {
throw new UnsupportedOperationException(Messages.Render_Error_TooManyTiles);
}
// Download and display tiles
// look up the preference for caching tiles on-disk or in
// memory and use the proper tilerange for that.
TileRange range = createTileRange(wmtSource, renderJob, tileList);
// create an empty raster symbolizer for rendering
RasterSymbolizer style = styleBuilder.createRasterSymbolizer();
// setup how much each tile is worth for the monitor work %
int tileCount = range.getTileCount();
int tileWorth = (tileCount / 100) * tileCount;
int thisid = 0;
if (testing) {
staticid++;
thisid = staticid;
}
// first render any tiles that are ready and render non-ready tiles with blank images
Map<String, Tile> tiles = range.getTiles();
Set<String> notRenderedTiles = new HashSet<String>();
Set<String> renderedTiles = new HashSet<String>();
renderReadyTiles(
destination,
monitor,
renderJob,
style,
tileWorth,
thisid,
tiles,
notRenderedTiles,
renderedTiles);
setState(RENDERING);
// if the tilerange is not already completed, then load
// the missing tiles
if (!notRenderedTiles.isEmpty()) {
renderNotRenderedTiles(
destination,
monitor,
renderJob,
range,
style,
tileWorth,
thisid,
notRenderedTiles,
renderedTiles);
}
if (testing) {
System.out.println("DONE!!!: " + thisid); // $NON-NLS-1$
}
} catch (UnsupportedOperationException doneExc) {
setDone(monitor);
layer.setStatus(ILayer.ERROR);
layer.setStatusMessage(doneExc.getMessage());
WMTPlugin.log("[BasicWMTRenderer.render] Error: ", doneExc); // $NON-NLS-1$
return;
} catch (CancellationException cancelExc) {
return;
} catch (Exception ex) {
WMTPlugin.log("[BasicWMTRenderer.render] Unexpected Error: ", ex); // $NON-NLS-1$
}
setDone(monitor);
}
