1 /*******************************************************************************
2 * Copyright (c) 2012 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.maps.sg;
14 import java.awt.AlphaComposite;
15 import java.awt.Color;
16 import java.awt.Composite;
18 import java.awt.Graphics2D;
19 import java.awt.GraphicsConfiguration;
20 import java.awt.Image;
21 import java.awt.Rectangle;
22 import java.awt.RenderingHints;
23 import java.awt.geom.AffineTransform;
24 import java.awt.geom.Point2D;
25 import java.awt.geom.Rectangle2D;
26 import java.awt.image.ImageObserver;
27 import java.awt.image.VolatileImage;
28 import java.net.MalformedURLException;
29 import java.net.URISyntaxException;
30 import java.util.ArrayList;
31 import java.util.HashMap;
32 import java.util.HashSet;
33 import java.util.Hashtable;
34 import java.util.List;
36 import java.util.concurrent.Executors;
37 import java.util.concurrent.ScheduledExecutorService;
38 import java.util.concurrent.ScheduledFuture;
39 import java.util.concurrent.TimeUnit;
41 import org.simantics.maps.WebService;
42 import org.simantics.maps.osm.OSMTileProvider;
43 import org.simantics.maps.pojo.TileJobQueue;
44 import org.simantics.maps.prefs.MapsClientPreferences;
45 import org.simantics.maps.tile.IFilter;
46 import org.simantics.maps.tile.ITileJobQueue;
47 import org.simantics.maps.tile.ITileListener;
48 import org.simantics.maps.tile.ITileProvider;
49 import org.simantics.maps.tile.TileCache;
50 import org.simantics.maps.tile.TileKey;
51 import org.simantics.scenegraph.g2d.G2DNode;
52 import org.simantics.scenegraph.g2d.G2DRenderingHints;
55 * @author Tuukka Lehtonen
57 public class MapNode extends G2DNode implements ITileListener {
59 private static final long serialVersionUID = 2490944880914577411L;
61 private final double MAP_SCALE = 1;
62 private final int MAX_TILE_LEVEL = 19;
63 private final int TILE_PIXEL_SIZE = 256;
64 private final int VIEWBOX_QUIET_TIME = 500;
66 protected Boolean enabled = true;
75 class TileLevel extends HashSet<TileKey> {
76 private static final long serialVersionUID = 5743763238677223952L;
79 static class TileTraverser {
80 List<TileKey> tile = new ArrayList<TileKey>(4);
81 List<Integer> quadrant = new ArrayList<Integer>(4);
83 static int getTileQuadrant(TileKey k) {
87 return ((y & 1) == 0) ? 1 : 2;
89 return ((y & 1) == 0) ? 0 : 3;
97 void add(TileKey tile) {
99 this.quadrant.add(getTileQuadrant(tile));
106 TileKey getTile(int i) {
110 int getQuadrant(int i) {
111 return quadrant.get(i);
115 public class ObjectHolder<T>
121 public void set(T o) {
126 public final class Pair<T1, T2> {
127 public final T1 first;
128 public final T2 second;
129 public Pair(T1 first, T2 second) {
131 this.second = second;
135 private TileCache tileCache;
137 // For delaying the retrieval of map data until the viewport remains steady
138 private ScheduledFuture<?> pendingTileTask;
140 private Map<Integer, TileLevel> neededTiles = new HashMap<Integer, TileLevel>();
142 private TileTraverser tileTraverser = new TileTraverser();
144 private ITileJobQueue job = null;
146 private Map<TileKey, TileState> tileStates = new Hashtable<TileKey, TileState>();
147 private ObjectHolder<VolatileImage> notLoadedImage = new ObjectHolder<VolatileImage>();
148 private ObjectHolder<VolatileImage> loadingImage = new ObjectHolder<VolatileImage>();
149 private ObjectHolder<VolatileImage> notAvailableImage = new ObjectHolder<VolatileImage>();
151 private Font textFont = new Font(Font.SANS_SERIF, Font.BOLD, 40);
153 private AffineTransform oldTransform = new AffineTransform();
154 private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
156 private Composite normalComposite = AlphaComposite.SrcOver.derive(1f);
157 private Composite parentDataComposite = AlphaComposite.SrcOver.derive(0.75f);
159 private Rectangle2D helperRect = new Rectangle2D.Double();
161 ImageObserver observer = new ImageObserver() {
163 public boolean imageUpdate(Image img, int infoflags, int x, int y, int width, int height) {
164 // System.out.format("imageUpdate(%s, %d, %d, %d, %d, %d)\n", img.toString(), infoflags, x, y, width, height);
170 // Construct WebService from client properties
172 if (MapsClientPreferences.useBuiltinServer())
173 url = MapsClientPreferences.possibleBuiltinServerURL();
175 url = MapsClientPreferences.tileserverURL();
176 if (!url.endsWith("/"))
180 ITileProvider provider = new OSMTileProvider(new WebService(url), TILE_PIXEL_SIZE);
182 // Try to load eclipse specific implementation of TileJobQueue, if it doesn't exist, fall back to pojo implementation
184 Class<?> proxyClass = (Class<?>) Class.forName("org.simantics.maps.eclipse.TileJobQueue");
185 job = (ITileJobQueue)proxyClass.newInstance();
186 } catch (ClassNotFoundException e1) {
187 } catch (InstantiationException e) {
188 } catch (IllegalAccessException e) {
190 // AppletProxyUtil should exist always..
192 job = new TileJobQueue();
195 // Cache is also eclipse specific...
196 ITileProvider cachedProvider = null;
198 Class<?> proxyClass = (Class<?>) Class.forName("org.simantics.maps.eclipse.DiskCachingTileProvider");
199 cachedProvider = (ITileProvider)proxyClass.getConstructor(ITileProvider.class, Boolean.class).newInstance(provider, false);
200 } catch (ClassNotFoundException e1) {
201 } catch (InstantiationException e) {
202 } catch (IllegalAccessException e) {
205 if(cachedProvider != null) {
206 job.setTileProvider(cachedProvider);
208 job.setTileProvider(provider);
211 this.tileCache = new TileCache(job);
212 this.tileCache.addTileListener(this);
213 } catch (MalformedURLException e) {
214 // TODO Auto-generated catch block
216 } catch (URISyntaxException e) {
217 // TODO Auto-generated catch block
219 } catch(Exception e ) {
224 @SyncField("enabled")
225 public void setEnabled(Boolean enabled) {
226 this.enabled = enabled;
230 public void render(Graphics2D g2d) {
234 AffineTransform ot = g2d.getTransform();
235 g2d.transform(transform);
237 AffineTransform tr = g2d.getTransform();
239 // Graphics2D g = (Graphics2D)g2d.create();
240 // AffineTransform tr = (AffineTransform)g.getTransform().clone();
242 double scaleX = Math.abs(tr.getScaleX());
243 double scaleY = Math.abs(tr.getScaleY());
244 if (scaleX <= 0 || scaleY <= 0) {
245 // Make sure that we don't end up in an eternal loop below.
248 double offsetX = -tr.getTranslateX();
249 double offsetY = -tr.getTranslateY();
251 g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
253 Rectangle2D sp = localToControl(new Rectangle2D.Double(0.0, 0.0, 1.0, 1.0));
254 Rectangle2D b = (Rectangle2D)((Rectangle)g2d.getRenderingHint(G2DRenderingHints.KEY_CONTROL_BOUNDS)).getBounds2D(); // getClipBounds is not accurate enough, use original clipbounds and scale here
256 Rectangle2D viewbox = new Rectangle2D.Double(offsetX/scaleX, offsetY/scaleY, b.getWidth()/sp.getWidth(), b.getHeight()/sp.getHeight()); //g.getClipBounds();
257 if(viewbox == null) return; // FIXME
259 double smallerViewboxDimension = viewbox.getWidth() < viewbox.getHeight() ? viewbox.getWidth() * MAP_SCALE : viewbox.getHeight() * MAP_SCALE;
261 double tileSize = 360 * MAP_SCALE*2;
262 while (level < MAX_TILE_LEVEL) {
263 double ratio = smallerViewboxDimension / tileSize;
271 * To convert y-coordinates to map coordinates in ruler, use:
272 * double val = (y-offsetY)/scaleY;
273 * val = Math.toDegrees(Math.atan(Math.sinh(Math.toRadians(val))));
274 * String str = formatValue(val);
277 double minx = Math.min(180, Math.max(viewbox.getMinX(), -180));
278 double maxx = Math.min(180, Math.max(viewbox.getMaxX(), -180));
280 double miny = Math.min(360, Math.max(viewbox.getMinY()+180, 0));
281 double maxy = Math.min(360, Math.max(viewbox.getMaxY()+180, 0));
283 g2d.setTransform(new AffineTransform());
284 g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
286 int levels = (1 << level);
288 // http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
289 int left = (int)Math.floor( (minx + 180) / 360 * (1<<level) );
290 int right = (int)Math.floor( (maxx + 180) / 360 * (1<<level) );
291 int top = (int)Math.floor(miny / 360 * (1<<level));// (int)Math.floor( (1 - Math.log(Math.tan(Math.toRadians(miny)) + 1 / Math.cos(Math.toRadians(miny))) / Math.PI) / 2 * (1<<level) );
292 int bottom = (int)Math.floor(maxy / 360 * (1<<level));// (int)Math.floor( (1 - Math.log(Math.tan(Math.toRadians(maxy)) + 1 / Math.cos(Math.toRadians(maxy))) / Math.PI) / 2 * (1<<level) );
294 double tsx = 360 / (double)levels; // Size of tile on zoom level
295 for(int tx = left; tx <= right; tx++) {
296 if(tx < 0 || tx >= levels) continue;
297 for(int ty = top; ty <= bottom; ty++) {
298 if(ty < 0 || ty >= levels) continue;
299 TileKey tile = new TileKey(level, tx, ty);
300 double y = (double)ty - (double)levels/2; // In level 0 we have only one tile
301 paintTile(tileCache, g2d, tr, tile, tx*tsx-180, y*tsx, tsx);
306 // Check if transform has changed
307 transformChanged(tr, level);
309 g2d.setTransform(ot);
313 public Rectangle2D getBoundsInLocal() {
317 private void paintTile(TileCache cache, Graphics2D g, AffineTransform userToScreenTransform, TileKey tile, double tx, double ty, double tileSize) {
318 GraphicsConfiguration gc = g.getDeviceConfiguration();
321 boolean usingParentData = false;
322 helperRect.setFrame(0, 0, TILE_PIXEL_SIZE, TILE_PIXEL_SIZE);
324 TileState state = tileStates.get(tile);
326 state = TileState.NOT_LOADED;
332 // The same logic applies both when the data has not been loaded
333 // or the data has been loaded previously, but may have been
334 // flushed from the cache.
335 img = cache.peek(tile);
337 // Either the data has never existed before or the cache has
338 // flushed this tile. Mark it as needed and try to use
339 // parent image instead.
342 Pair<TileKey, Image> p = findFirstAvailableParentTile(cache, tile, tileTraverser);
345 helperRect.setFrame(0, 0, img.getWidth(observer), img.getHeight(observer));
346 traverseRectangle(tileTraverser, helperRect);
347 usingParentData = true;
349 img = getNotLoadedImage(gc);
352 helperRect.setFrame(0, 0, img.getWidth(observer), img.getHeight(observer));
357 Pair<TileKey, Image> p = findFirstAvailableParentTile(cache, tile, tileTraverser);
360 helperRect.setFrame(0, 0, img.getWidth(observer), img.getHeight(observer));
361 traverseRectangle(tileTraverser, helperRect);
362 usingParentData = true;
364 img = getLoadingImage(gc);
368 case NOT_AVAILABLE: {
369 img = getMissingImage(gc);
373 throw new Error("Invalid tile state: " + state);
376 // Calculate where these user space coordinates are in the screen
377 // space and given them to drawImage().
378 Point2D helperPoint1 = new Point2D.Double(tx, ty);
379 Point2D helperPoint2 = new Point2D.Double(tx + tileSize, ty + tileSize);
380 userToScreenTransform.transform(helperPoint1, helperPoint1);
381 userToScreenTransform.transform(helperPoint2, helperPoint2);
383 int dx1 = (int) Math.round(helperPoint1.getX());
384 int dy1 = (int) Math.round(helperPoint1.getY());
385 int dx2 = (int) Math.round(helperPoint2.getX());
386 int dy2 = (int) Math.round(helperPoint2.getY());
388 int sx1 = (int) Math.round(helperRect.getMinX());
389 int sy1 = (int) Math.round(helperRect.getMinY());
390 int sx2 = (int) Math.round(helperRect.getMaxX());
391 int sy2 = (int) Math.round(helperRect.getMaxY());
393 if (usingParentData) {
394 g.setComposite(parentDataComposite);
396 g.setComposite(normalComposite);
398 g.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, observer);
401 private void transformChanged(AffineTransform newTransform, final int level) {
402 // Cancel data fetching if the viewport changes.
403 AffineTransform ato = (AffineTransform) oldTransform;
404 AffineTransform atn = (AffineTransform) newTransform;
408 s1 = ato.getScaleX();
409 double s2 = atn.getScaleX();
411 if (Math.abs(ds) > 1e-6) {
412 if (pendingTileTask != null) {
413 pendingTileTask.cancel(false);
414 pendingTileTask = null;
416 Runnable r = new Runnable() {
419 // There was a quiet period of [delay] milliseconds.
420 // Now its time to start fetching the map data that has
421 // piled up into the queue.
422 loadNeededTiles(level);
425 pendingTileTask = scheduler.schedule(r, VIEWBOX_QUIET_TIME, TimeUnit.MILLISECONDS);
426 oldTransform = (AffineTransform)newTransform.clone();
428 loadNeededTiles(level);
432 private void loadNeededTiles(final int level) {
433 TileCache cache = this.tileCache;
435 // Remove all tile queries from the job queue that do not match the
436 // requested tile level. This helps speed up loading of the right tiles
437 // that should be shown to the user ASAP instead of spending time
438 // loading invisible tiles.
439 cache.filterJobQueue(new IFilter<TileKey>() {
441 public boolean select(TileKey tile) {
442 boolean result = (tile.getLevel() == level);
444 // System.out.println("FILTERED TILE: " + tile);
449 // Schedule retrieval of each tile on the current level.
451 synchronized (neededTiles) {
452 l = neededTiles.get(level);
455 if (l != null && !l.isEmpty()) {
456 for (TileKey k : l) {
457 tileStates.put(k, TileState.LOADING);
463 void needTile(TileKey t) {
464 synchronized (neededTiles) {
465 int level = t.getLevel();
466 TileLevel l = neededTiles.get(level);
469 neededTiles.put(level, l);
475 private Pair<TileKey, Image> findFirstAvailableParentTile(TileCache cache, TileKey tile, TileTraverser traverser) {
479 TileKey parent = getParentTile(tile);
480 while (parent != null) {
481 Image img = cache.peek(parent);
483 return new Pair<TileKey, Image>(parent, img);
484 traverser.add(parent);
485 parent = getParentTile(parent);
490 private TileKey getParentTile(TileKey k) {
491 if (k.getLevel() == 0)
493 return new TileKey(k.getLevel() - 1, k.getX() / 2, k.getY() / 2);
496 private void traverseRectangle(TileTraverser traverser, Rectangle2D rect) {
497 for (int i = traverser.size() - 1; i >= 0; --i) {
498 traverseToQuadrant(rect, traverser.getQuadrant(i));
502 private Rectangle2D traverseToQuadrant(Rectangle2D r, int quadrant) {
503 boolean left = quadrant == 1 || quadrant == 2;
504 boolean top = quadrant == 1 || quadrant == 0;
506 left ? r.getMinX() : r.getCenterX(),
507 top ? r.getMinY() : r.getCenterY(),
509 r.getHeight() / 2.0);
513 private synchronized VolatileImage getNotLoadedImage(GraphicsConfiguration gc) {
514 return validateImageWithCenteredText(gc, notLoadedImage, TILE_PIXEL_SIZE, "NOT LOADED", Color.LIGHT_GRAY, Color.BLACK);
517 private synchronized VolatileImage getLoadingImage(GraphicsConfiguration gc) {
518 return validateImageWithCenteredText(gc, loadingImage, TILE_PIXEL_SIZE, "LOADING", Color.BLUE, Color.BLACK);
521 private synchronized VolatileImage getMissingImage(GraphicsConfiguration gc) {
522 return validateImageWithCenteredText(gc, notAvailableImage, TILE_PIXEL_SIZE, "NOT AVAILABLE", Color.RED, Color.DARK_GRAY);
525 private void drawImageWithCenteredText(VolatileImage image, String str, Font font, Color color, Color bgColor) {
526 Graphics2D target = image.createGraphics();
527 Rectangle2D bb = target.getFontMetrics(font).getStringBounds(str, target);
529 target.setBackground(new Color(255,255,255,0));
530 int w = image.getWidth();
531 int h = image.getHeight();
533 target.setColor(Color.BLACK);
534 target.fillRect(0, 0, w, h);
535 target.setColor(bgColor);
536 target.fillRect(2, 2, w - 3, h - 3);
537 target.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
538 target.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
539 target.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
540 target.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
541 target.setColor(color);
542 target.setFont(font);
543 target.drawString(str, (float) (((double)w - bb.getWidth()) / 2), (float) (((double)h + bb.getHeight()) / 2));
547 private VolatileImage validateImageWithCenteredText(GraphicsConfiguration gc, ObjectHolder<VolatileImage> container, int size, String text, Color textColor, Color bgColor) {
548 VolatileImage image = container.get();
550 int validateResult = image.validate(gc);
551 if (validateResult == VolatileImage.IMAGE_INCOMPATIBLE) {
553 } else if (validateResult == VolatileImage.IMAGE_OK) {
555 } else if (validateResult == VolatileImage.IMAGE_RESTORED) {
556 drawImageWithCenteredText(image, text, textFont, textColor, bgColor);
560 image = gc.createCompatibleVolatileImage(size, size);
561 container.set(image);
562 drawImageWithCenteredText(image, text, textFont, textColor, bgColor);
568 public void tileCanceled(TileKey key) {
569 tileStates.put(key, TileState.NOT_LOADED);
573 public void tileFailed(TileKey key, Throwable e) {
574 tileStates.put(key, TileState.NOT_AVAILABLE);
579 public void tileUpdated(TileKey key, Image image) {
580 tileStates.put(key, TileState.LOADED);