private void loadAllTopLevelTextures(DrawContext dc) {
for (MercatorTextureTile tile : this.topLevels) {
if (!tile.isTextureInMemory(dc.getTextureCache())) this.forceTextureLoad(tile);
}
this.levelZeroLoaded = true;
}
public ByteBuffer run(Retriever retriever) {
if (!retriever.getState().equals(Retriever.RETRIEVER_STATE_SUCCESSFUL)) return null;
HTTPRetriever htr = (HTTPRetriever) retriever;
if (htr.getResponseCode() == HttpURLConnection.HTTP_NO_CONTENT) {
// Mark tile as missing to avoid excessive attempts
MercatorTiledImageLayer.this.levels.markResourceAbsent(tile);
return null;
}
if (htr.getResponseCode() != HttpURLConnection.HTTP_OK) return null;
URLRetriever r = (URLRetriever) retriever;
ByteBuffer buffer = r.getBuffer();
String suffix = WWIO.makeSuffixForMimeType(htr.getContentType());
if (suffix == null) {
return null; // TODO: log error
}
String path = tile.getPath().substring(0, tile.getPath().lastIndexOf("."));
path += suffix;
final File outFile = WorldWind.getDataFileStore().newFile(path);
if (outFile == null) return null;
try {
WWIO.saveBuffer(buffer, outFile);
return buffer;
} catch (IOException e) {
e.printStackTrace(); // TODO: log error
return null;
}
}
private void drawTileIDs(DrawContext dc, ArrayList<MercatorTextureTile> tiles) {
java.awt.Rectangle viewport = dc.getView().getViewport();
if (this.textRenderer == null) {
this.textRenderer = new TextRenderer(java.awt.Font.decode("Arial-Plain-13"), true, true);
this.textRenderer.setUseVertexArrays(false);
}
dc.getGL().glDisable(GL.GL_DEPTH_TEST);
dc.getGL().glDisable(GL.GL_BLEND);
dc.getGL().glDisable(GL.GL_TEXTURE_2D);
this.textRenderer.setColor(java.awt.Color.YELLOW);
this.textRenderer.beginRendering(viewport.width, viewport.height);
for (MercatorTextureTile tile : tiles) {
String tileLabel = tile.getLabel();
if (tile.getFallbackTile() != null) tileLabel += "/" + tile.getFallbackTile().getLabel();
LatLon ll = tile.getSector().getCentroid();
Vec4 pt =
dc.getGlobe()
.computePointFromPosition(
ll.getLatitude(),
ll.getLongitude(),
dc.getGlobe().getElevation(ll.getLatitude(), ll.getLongitude()));
pt = dc.getView().project(pt);
this.textRenderer.draw(tileLabel, (int) pt.x, (int) pt.y);
}
this.textRenderer.endRendering();
}
private void drawBoundingVolumes(DrawContext dc, ArrayList<MercatorTextureTile> tiles) {
float[] previousColor = new float[4];
dc.getGL().glGetFloatv(GL.GL_CURRENT_COLOR, previousColor, 0);
dc.getGL().glColor3d(0, 1, 0);
for (MercatorTextureTile tile : tiles) {
((Cylinder) tile.getExtent(dc)).render(dc);
}
Cylinder c =
dc.getGlobe()
.computeBoundingCylinder(dc.getVerticalExaggeration(), this.levels.getSector());
dc.getGL().glColor3d(1, 1, 0);
c.render(dc);
dc.getGL().glColor4fv(previousColor, 0);
}
private boolean isTileVisible(DrawContext dc, MercatorTextureTile tile) {
// if (!(tile.getExtent(dc).intersects(dc.getView().getFrustumInModelCoordinates())
// && (dc.getVisibleSector() == null ||
// dc.getVisibleSector().intersects(tile.getSector()))))
// return false;
//
// Position eyePos = dc.getView().getEyePosition();
// LatLon centroid = tile.getSector().getCentroid();
// Angle d = LatLon.greatCircleDistance(eyePos.getLatLon(), centroid);
// if ((!tile.getLevelName().equals("0")) &&
// d.compareTo(tile.getSector().getDeltaLat().multiply(2.5)) == 1)
// return false;
//
// return true;
//
return tile.getExtent(dc).intersects(dc.getView().getFrustumInModelCoordinates())
&& (dc.getVisibleSector() == null || dc.getVisibleSector().intersects(tile.getSector()));
}
private BufferedImage requestImage(MercatorTextureTile tile, String mimeType)
throws URISyntaxException {
String pathBase = tile.getPath().substring(0, tile.getPath().lastIndexOf("."));
String suffix = WWIO.makeSuffixForMimeType(mimeType);
String path = pathBase + suffix;
URL url = WorldWind.getDataFileStore().findFile(path, false);
if (url == null) // image is not local
return null;
if (WWIO.isFileOutOfDate(url, tile.getLevel().getExpiryTime())) {
// The file has expired. Delete it.
WorldWind.getDataFileStore().removeFile(url);
String message = Logging.getMessage("generic.DataFileExpired", url);
Logging.logger().fine(message);
} else {
try {
File imageFile = new File(url.toURI());
BufferedImage image = ImageIO.read(imageFile);
if (image == null) {
String message = Logging.getMessage("generic.ImageReadFailed", imageFile);
throw new RuntimeException(message);
}
this.levels.unmarkResourceAbsent(tile);
return image;
} catch (IOException e) {
// Assume that something's wrong with the file and delete it.
gov.nasa.worldwind.WorldWind.getDataFileStore().removeFile(url);
this.levels.markResourceAbsent(tile);
String message = Logging.getMessage("generic.DeletedCorruptDataFile", url);
Logging.logger().info(message);
}
}
return null;
}
public int compare(MercatorTextureTile ta, MercatorTextureTile tb) {
int la =
ta.getFallbackTile() == null
? ta.getLevelNumber()
: ta.getFallbackTile().getLevelNumber();
int lb =
tb.getFallbackTile() == null
? tb.getLevelNumber()
: tb.getFallbackTile().getLevelNumber();
return la < lb ? -1 : la == lb ? 0 : 1;
}
private BufferedImage getImage(MercatorTextureTile tile, String mimeType) throws Exception {
// Read the image from disk.
BufferedImage image = this.requestImage(tile, mimeType);
if (image != null) return image;
// Retrieve it from the net since it's not on disk.
this.downloadImage(tile, mimeType);
// Try to read from disk again after retrieving it from the net.
image = this.requestImage(tile, mimeType);
if (image == null) {
String message =
Logging.getMessage("layers.TiledImageLayer.ImageUnavailable", tile.getPath());
throw new RuntimeException(message);
}
return image;
}
private void downloadImage(final MercatorTextureTile tile, String mimeType) throws Exception {
// System.out.println(tile.getPath());
final URL resourceURL = tile.getResourceURL(mimeType);
Retriever retriever;
String protocol = resourceURL.getProtocol();
if ("http".equalsIgnoreCase(protocol)) {
retriever = new HTTPRetriever(resourceURL, new HttpRetrievalPostProcessor(tile));
} else {
String message =
Logging.getMessage("layers.TextureLayer.UnknownRetrievalProtocol", resourceURL);
throw new RuntimeException(message);
}
retriever.setConnectTimeout(10000);
retriever.setReadTimeout(20000);
retriever.call();
}
private void addTile(DrawContext dc, MercatorTextureTile tile) {
tile.setFallbackTile(null);
if (tile.isTextureInMemory(dc.getTextureCache())) {
// System.out.printf("Sector %s, min = %f, max = %f\n", tile.getSector(),
// dc.getGlobe().getMinElevation(tile.getSector()),
// dc.getGlobe().getMaxElevation(tile.getSector()));
this.addTileToCurrent(tile);
return;
}
// Level 0 loads may be forced
if (tile.getLevelNumber() == 0
&& this.forceLevelZeroLoads
&& !tile.isTextureInMemory(dc.getTextureCache())) {
this.forceTextureLoad(tile);
if (tile.isTextureInMemory(dc.getTextureCache())) {
this.addTileToCurrent(tile);
return;
}
}
// Tile's texture isn't available, so request it
if (tile.getLevelNumber() < this.levels.getNumLevels()) {
// Request only tiles with data associated at this level
if (!this.levels.isResourceAbsent(tile)) this.requestTexture(dc, tile);
}
// Set up to use the currentResource tile's texture
if (this.currentResourceTile != null) {
if (this.currentResourceTile.getLevelNumber() == 0
&& this.forceLevelZeroLoads
&& !this.currentResourceTile.isTextureInMemory(dc.getTextureCache())
&& !this.currentResourceTile.isTextureInMemory(dc.getTextureCache()))
this.forceTextureLoad(this.currentResourceTile);
if (this.currentResourceTile.isTextureInMemory(dc.getTextureCache())) {
tile.setFallbackTile(currentResourceTile);
this.addTileToCurrent(tile);
}
}
}
public BufferedImage composeImageForSector(
Sector sector,
int imageWidth,
int imageHeight,
int levelNumber,
String mimeType,
boolean abortOnError,
BufferedImage image) {
if (sector == null) {
String message = Logging.getMessage("nullValue.SectorIsNull");
Logging.logger().severe(message);
throw new IllegalStateException(message);
}
if (levelNumber < 0) {
levelNumber = this.levels.getLastLevel().getLevelNumber();
} else if (levelNumber > this.levels.getLastLevel().getLevelNumber()) {
Logging.logger()
.warning(
Logging.getMessage(
"generic.LevelRequestedGreaterThanMaxLevel",
levelNumber,
this.levels.getLastLevel().getLevelNumber()));
levelNumber = this.levels.getLastLevel().getLevelNumber();
}
MercatorTextureTile[][] tiles = this.getTilesInSector(sector, levelNumber);
if (tiles.length == 0 || tiles[0].length == 0) {
Logging.logger().severe(Logging.getMessage("layers.TiledImageLayer.NoImagesAvailable"));
return null;
}
if (image == null)
image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
for (MercatorTextureTile[] row : tiles) {
for (MercatorTextureTile tile : row) {
if (tile == null) continue;
BufferedImage tileImage;
try {
tileImage = this.getImage(tile, mimeType);
double sh =
((double) imageHeight / (double) tileImage.getHeight())
* (tile.getSector().getDeltaLat().divide(sector.getDeltaLat()));
double sw =
((double) imageWidth / (double) tileImage.getWidth())
* (tile.getSector().getDeltaLon().divide(sector.getDeltaLon()));
double dh =
imageHeight
* (-tile.getSector().getMaxLatitude().subtract(sector.getMaxLatitude()).degrees
/ sector.getDeltaLat().degrees);
double dw =
imageWidth
* (tile.getSector().getMinLongitude().subtract(sector.getMinLongitude()).degrees
/ sector.getDeltaLon().degrees);
AffineTransform txf = g.getTransform();
g.translate(dw, dh);
g.scale(sw, sh);
g.drawImage(tileImage, 0, 0, null);
g.setTransform(txf);
} catch (Exception e) {
if (abortOnError) throw new RuntimeException(e);
String message =
Logging.getMessage("generic.ExceptionWhileRequestingImage", tile.getPath());
Logging.logger().log(java.util.logging.Level.WARNING, message, e);
}
}
}
return image;
}
private boolean meetsRenderCriteria(DrawContext dc, MercatorTextureTile tile) {
return this.levels.isFinalLevel(tile.getLevelNumber()) || !needToSplit(dc, tile.getSector());
}
private void addTileOrDescendants(DrawContext dc, MercatorTextureTile tile) {
if (this.meetsRenderCriteria(dc, tile)) {
this.addTile(dc, tile);
return;
}
// The incoming tile does not meet the rendering criteria, so it must be subdivided and those
// subdivisions tested against the criteria.
// All tiles that meet the selection criteria are drawn, but some of those tiles will not have
// textures associated with them either because their texture isn't loaded yet or because they
// are finer grain than the layer has textures for. In these cases the tiles use the texture of
// the closest ancestor that has a texture loaded. This ancestor is called the
// currentResourceTile.
// A texture transform is applied during rendering to align the sector's texture coordinates
// with the
// appropriate region of the ancestor's texture.
MercatorTextureTile ancestorResource = null;
try {
// TODO: Revise this to reflect that the parent layer is only requested while the algorithm
// continues
// to search for the layer matching the criteria.
// At this point the tile does not meet the render criteria but it may have its texture in
// memory.
// If so, register this tile as the resource tile. If not, then this tile will be the next
// level
// below a tile with texture in memory. So to provide progressive resolution increase, add
// this tile
// to the draw list. That will cause the tile to be drawn using its parent tile's texture, and
// it will
// cause it's texture to be requested. At some future call to this method the tile's texture
// will be in
// memory, it will not meet the render criteria, but will serve as the parent to a tile that
// goes
// through this same process as this method recurses. The result of all this is that a tile
// isn't rendered
// with its own texture unless all its parents have their textures loaded. In addition to
// causing
// progressive resolution increase, this ensures that the parents are available as the user
// zooms out, and
// therefore the layer remains visible until the user is zoomed out to the point the layer is
// no longer
// active.
if (tile.isTextureInMemory(dc.getTextureCache()) || tile.getLevelNumber() == 0) {
ancestorResource = this.currentResourceTile;
this.currentResourceTile = tile;
} else if (!tile.getLevel().isEmpty()) {
// this.addTile(dc, tile);
// return;
// Issue a request for the parent before descending to the children.
if (tile.getLevelNumber() < this.levels.getNumLevels()) {
// Request only tiles with data associated at this level
if (!this.levels.isResourceAbsent(tile)) this.requestTexture(dc, tile);
}
}
MercatorTextureTile[] subTiles =
tile.createSubTiles(this.levels.getLevel(tile.getLevelNumber() + 1));
for (MercatorTextureTile child : subTiles) {
if (this.isTileVisible(dc, child)) this.addTileOrDescendants(dc, child);
}
} finally {
if (ancestorResource != null) // Pop this tile as the currentResource ancestor
this.currentResourceTile = ancestorResource;
}
}
