2 * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
18 package org.altusmetrum.altosuilib_2;
21 import java.awt.event.*;
24 import java.lang.Math;
25 import java.awt.geom.*;
27 import java.util.concurrent.*;
28 import org.altusmetrum.altoslib_4.*;
34 public MapPoint(double lat, double lon, int state) {
40 public boolean equals(MapPoint other) {
47 if (other.state != state)
53 public class AltosSiteMap extends JComponent implements AltosFlightDisplay, MouseMotionListener, MouseListener {
54 // preferred vertical step in a tile in naut. miles
55 // will actually choose a step size between x and 2x, where this
57 static final double tile_size_nmi = 0.75;
59 static final int px_size = 512;
61 static final int MAX_TILE_DELTA = 100;
63 static final int maptype_hybrid = 0;
64 static final int maptype_roadmap = 1;
65 static final int maptype_satellite = 2;
66 static final int maptype_terrain = 3;
68 int maptype = maptype_hybrid;
70 static final String[] maptype_names = {
77 static final String[] maptype_labels = {
84 LinkedList<MapPoint> points = new LinkedList<MapPoint>();
86 private static Point2D.Double translatePoint(Point2D.Double p,
89 return new Point2D.Double(p.x + d.x, p.y + d.y);
93 public double lat, lng;
94 public LatLng(double lat, double lng) {
100 // based on google js
101 // http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
102 // search for fromLatLngToPoint and fromPointToLatLng
104 private static Point2D.Double pt(LatLng latlng, int zoom) {
105 double scale_x = 256/360.0 * Math.pow(2, zoom);
106 double scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
107 return pt(latlng, scale_x, scale_y);
111 private static Point2D.Double pt(LatLng latlng,
112 double scale_x, double scale_y)
114 Point2D.Double res = new Point2D.Double();
117 res.x = latlng.lng * scale_x;
119 e = Math.sin(Math.toRadians(latlng.lat));
120 e = Math.max(e,-(1-1.0E-15));
121 e = Math.min(e, 1-1.0E-15 );
123 res.y = 0.5*Math.log((1+e)/(1-e))*-scale_y;
127 static private LatLng latlng(Point2D.Double pt,
128 double scale_x, double scale_y)
134 rads = 2 * Math.atan(Math.exp(-pt.y/scale_y));
135 lat = Math.toDegrees(rads - Math.PI/2);
137 return new LatLng(lat,lng);
140 static final int default_zoom = 15;
141 static final int min_zoom = 3;
142 static final int max_zoom = 21;
144 int zoom = default_zoom;
146 double scale_x, scale_y;
148 int radius; /* half width/height of tiles to load */
150 private Point2D.Double pt(double lat, double lng) {
151 return pt(new LatLng(lat, lng), scale_x, scale_y);
154 private LatLng latlng(double x, double y) {
155 return latlng(new Point2D.Double(x,y), scale_x, scale_y);
158 private LatLng latlng(Point2D.Double pt) {
159 return latlng(pt, scale_x, scale_y);
163 private LatLng latlng(Point pt) {
164 return latlng(new Point2D.Double(pt.x, pt.y), scale_x, scale_y);
167 ConcurrentHashMap<Point,AltosSiteMapTile> mapTiles = new ConcurrentHashMap<Point,AltosSiteMapTile>();
168 Point2D.Double centre;
170 private Point2D.Double tileCoordOffset(Point p) {
171 return new Point2D.Double(centre.x - p.x*px_size,
172 centre.y - p.y*px_size);
175 private Point tileOffset(Point2D.Double p) {
176 return new Point((int)Math.floor((centre.x+p.x)/px_size),
177 (int)Math.floor((centre.y+p.y)/px_size));
180 private Point2D.Double getBaseLocation(double lat, double lng) {
181 Point2D.Double locn = pt(0,0), north_step;
183 scale_x = 256/360.0 * Math.pow(2, zoom);
184 scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
186 locn.x = -px_size * Math.floor(locn.x/px_size);
187 locn.y = -px_size * Math.floor(locn.y/px_size);
191 public void reset() {
195 public void set_font() {
196 for (AltosSiteMapTile tile : mapTiles.values())
197 tile.set_font(AltosUILib.value_font);
200 static final int load_mode_cached = 1;
201 static final int load_mode_uncached = 2;
203 private boolean load_map(final AltosSiteMapTile tile,
204 final File pngfile, String pngurl,
207 boolean has_map = AltosSiteMapCache.has_map(pngfile, pngurl);
208 if ((load_mode & load_mode_uncached) == 0 && !has_map)
210 if ((load_mode & load_mode_cached) == 0 && has_map)
213 tile.set_status(AltosSiteMapCache.loading);
214 int status = AltosSiteMapCache.fetch_map(pngfile, pngurl);
215 if (status == AltosSiteMapCache.success) {
216 SwingUtilities.invokeLater(new Runnable() {
218 tile.load_map(pngfile);
222 tile.set_status(status);
223 System.out.printf("# Failed to fetch file %s (status %d)\n", pngfile, status);
224 System.out.printf(" wget -O '%s' '%s'\n", pngfile, pngurl);
225 System.out.printf(" sleep 1\n");
231 class AltosSiteMapPrefetch {
239 public AltosSiteMapPrefetch prefetchMap(int x, int y) {
240 AltosSiteMapPrefetch prefetch = new AltosSiteMapPrefetch();
241 LatLng map_latlng = latlng(
242 -centre.x + x*px_size + px_size/2,
243 -centre.y + y*px_size + px_size/2);
244 prefetch.pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom, maptype_hybrid);
245 prefetch.pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom, maptype_hybrid);
246 if (AltosSiteMapCache.has_map(prefetch.pngfile, prefetch.pngurl)) {
248 } else if (AltosSiteMapCache.fetch_map(prefetch.pngfile, prefetch.pngurl) == AltosSiteMapCache.success) {
251 prefetch.result = -1;
256 public static void prefetchMaps(double lat, double lng) {
257 int w = AltosSiteMapPreload.width;
258 int h = AltosSiteMapPreload.height;
259 AltosSiteMap asm = new AltosSiteMap(true);
260 asm.centre = asm.getBaseLocation(lat, lng);
262 //Point2D.Double p = new Point2D.Double();
264 int dx = -w/2, dy = -h/2;
265 for (int y = dy; y < h+dy; y++) {
266 for (int x = dx; x < w+dx; x++) {
267 AltosSiteMapPrefetch prefetch = asm.prefetchMap(x, y);
268 switch (prefetch.result) {
270 System.out.printf("Already have %s\n", prefetch.pngfile);
273 System.out.printf("Fetched map %s\n", prefetch.pngfile);
276 System.out.printf("# Failed to fetch file %s\n", prefetch.pngfile);
277 System.out.printf(" wget -O '%s' ''\n",
278 prefetch.pngfile, prefetch.pngurl);
285 public File init_map(Point offset, int load_mode) {
286 AltosSiteMapTile tile = mapTiles.get(offset);
287 Point2D.Double coord = tileCoordOffset(offset);
289 LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
291 File pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom, maptype);
292 String pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom, maptype);
293 load_map(tile, pngfile, pngurl, load_mode);
297 public void initAndFinishMapAsync (final AltosSiteMapTile tile, final Point offset) {
298 Thread thread = new Thread() {
300 init_map(offset, load_mode_cached|load_mode_uncached);
301 finishTileLater(tile, offset);
308 boolean base_location_set = false;
310 public void clear_base_location() {
311 base_location_set = false;
313 points = new LinkedList<MapPoint>();
314 line_start = line_end = null;
317 public void setBaseLocation(double lat, double lng) {
318 for (AltosSiteMapTile tile : mapTiles.values())
322 base_location_set = true;
324 centre = getBaseLocation(lat, lng);
325 scrollRocketToVisible(pt(lat,lng));
328 private void initMaps(double lat, double lng) {
329 setBaseLocation(lat, lng);
331 Thread thread = new Thread() {
333 for (Point k : mapTiles.keySet())
334 init_map(k, load_mode_cached);
335 for (Point k : mapTiles.keySet())
336 init_map(k, load_mode_uncached);
342 private static File MapFile(double lat, double lng, int zoom, int maptype) {
343 char chlat = lat < 0 ? 'S' : 'N';
344 char chlng = lng < 0 ? 'W' : 'E';
345 if (lat < 0) lat = -lat;
346 if (lng < 0) lng = -lng;
347 String maptype_string = String.format("%s-", maptype_names[maptype]);
348 String format_string;
349 if (maptype == maptype_hybrid || maptype == maptype_satellite || maptype == maptype_terrain)
350 format_string = "jpg";
352 format_string = "png";
353 return new File(AltosUIPreferences.mapdir(),
354 String.format("map-%c%.6f,%c%.6f-%s%d.%s",
355 chlat, lat, chlng, lng, maptype_string, zoom, format_string));
358 private static String MapURL(double lat, double lng, int zoom, int maptype) {
359 String format_string;
360 if (maptype == maptype_hybrid || maptype == maptype_satellite || maptype == maptype_terrain)
361 format_string = "jpg";
363 format_string = "png32";
364 return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=%s&format=%s",
365 lat, lng, zoom, px_size, px_size, maptype_names[maptype], format_string);
368 boolean initialised = false;
369 MapPoint last_point = null;
372 public void show(double lat, double lon) {
373 System.out.printf ("show %g %g\n", lat, lon);
375 // initMaps(lat, lon);
376 // scrollRocketToVisible(pt(lat, lon));
381 public void set_zoom_label() {
382 zoom_label.setText(String.format("- %d -", zoom - default_zoom));
385 public void set_zoom(int zoom) {
386 if (min_zoom <= zoom && zoom <= max_zoom) {
388 if (base_location_set)
395 public int get_zoom() {
399 public void draw(MapPoint last_point, MapPoint point) {
400 boolean force_ensure = false;
401 if (last_point == null) {
406 Point2D.Double pt = pt(point.lat, point.lon);
407 Point2D.Double last_pt = pt(last_point.lat, last_point.lon);
409 boolean in_any = false;
410 for (Point offset : mapTiles.keySet()) {
411 AltosSiteMapTile tile = mapTiles.get(offset);
412 Point2D.Double ref, lref;
413 ref = translatePoint(pt, tileCoordOffset(offset));
414 lref = translatePoint(last_pt, tileCoordOffset(offset));
415 tile.show(point.state, lref, ref);
416 if (0 <= ref.x && ref.x < px_size)
417 if (0 <= ref.y && ref.y < px_size)
421 Point offset = tileOffset(pt);
423 Point2D.Double ref, lref;
424 ref = translatePoint(pt, tileCoordOffset(offset));
425 lref = translatePoint(last_pt, tileCoordOffset(offset));
427 AltosSiteMapTile tile = createTile(offset);
428 tile.show(point.state, lref, ref);
429 initAndFinishMapAsync(tile, offset);
432 scrollRocketToVisible(pt);
434 if (force_ensure || offset != tileOffset(last_pt)) {
435 ensureTilesAround(offset);
439 public void redraw() {
440 MapPoint last_point = null;
442 for (MapPoint point : points) {
443 draw(last_point, point);
447 draw_circle(circle_lat, circle_lon);
448 if (line_start != null)
452 public void show(final AltosState state, final AltosListenerState listener_state) {
453 // if insufficient gps data, nothing to update
454 AltosGPS gps = state.gps;
459 if (!gps.locked && gps.nsat < 4)
463 if (state.pad_lat != AltosLib.MISSING && state.pad_lon != AltosLib.MISSING) {
464 initMaps(state.pad_lat, state.pad_lon);
466 } else if (gps.lat != AltosLib.MISSING && gps.lon != AltosLib.MISSING) {
467 initMaps(gps.lat, gps.lon);
474 MapPoint point = new MapPoint(gps.lat, gps.lon, state.state);
476 if (point.equals(last_point))
481 draw(last_point, point);
486 public void centre(Point2D.Double pt) {
487 Rectangle r = comp.getVisibleRect();
488 Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
489 int dx = (int)copt.x - r.width/2 - r.x;
490 int dy = (int)copt.y - r.height/2 - r.y;
495 comp.scrollRectToVisible(r);
498 public void centre(AltosState state) {
499 if (!state.gps.locked && state.gps.nsat < 4)
501 centre(pt(state.gps.lat, state.gps.lon));
504 private double circle_lat, circle_lon;
505 private boolean circle_set = false;
507 public void draw_circle(double lat, double lon) {
512 Point2D.Double pt = pt(lat, lon);
514 for (Point offset : mapTiles.keySet()) {
515 AltosSiteMapTile tile = mapTiles.get(offset);
516 Point2D.Double ref = translatePoint(pt, tileCoordOffset(offset));
521 private AltosSiteMapTile createTile(Point offset) {
522 AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
523 tile.set_font(AltosUILib.value_font);
524 mapTiles.put(offset, tile);
527 private void finishTileLater(final AltosSiteMapTile tile,
530 SwingUtilities.invokeLater( new Runnable() {
532 addTileAt(tile, offset);
537 private void ensureTilesAround(Point base_offset) {
538 for (int x = -radius; x <= radius; x++) {
539 for (int y = -radius; y <= radius; y++) {
540 Point offset = new Point(base_offset.x + x, base_offset.y + y);
541 if (mapTiles.containsKey(offset))
543 AltosSiteMapTile tile = createTile(offset);
544 initAndFinishMapAsync(tile, offset);
549 private Point topleft = new Point(0,0);
550 private void scrollRocketToVisible(Point2D.Double pt) {
551 Rectangle r = comp.getVisibleRect();
552 Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
554 int dx = (int)copt.x - r.width/2 - r.x;
555 int dy = (int)copt.y - r.height/2 - r.y;
556 if (Math.abs(dx) > r.width/4 || Math.abs(dy) > r.height/4) {
559 comp.scrollRectToVisible(r);
563 private void addTileAt(AltosSiteMapTile tile, Point offset) {
564 if (Math.abs(offset.x) >= MAX_TILE_DELTA ||
565 Math.abs(offset.y) >= MAX_TILE_DELTA)
567 System.out.printf("Rocket too far away from pad (tile %d,%d)\n",
572 boolean review = false;
573 Rectangle r = comp.getVisibleRect();
574 if (offset.x < topleft.x) {
575 r.x += (topleft.x - offset.x) * px_size;
576 topleft.x = offset.x;
579 if (offset.y < topleft.y) {
580 r.y += (topleft.y - offset.y) * px_size;
581 topleft.y = offset.y;
584 GridBagConstraints c = new GridBagConstraints();
585 c.anchor = GridBagConstraints.CENTER;
586 c.fill = GridBagConstraints.BOTH;
587 // put some space between the map tiles, debugging only
588 // c.insets = new Insets(5, 5, 5, 5);
590 c.gridx = offset.x + MAX_TILE_DELTA;
591 c.gridy = offset.y + MAX_TILE_DELTA;
592 layout.setConstraints(tile, c);
596 // comp.scrollRectToVisible(r);
600 private AltosSiteMap(boolean knowWhatYouAreDoing) {
601 if (!knowWhatYouAreDoing) {
602 throw new RuntimeException("Arggh.");
608 private GridBagLayout layout = new GridBagLayout();
610 LatLng line_start, line_end;
612 private void set_line() {
613 if (line_start != null && line_end != null) {
614 Point2D.Double start = pt(line_start.lat, line_start.lng);
615 Point2D.Double end = pt(line_end.lat, line_end.lng);
616 AltosGreatCircle g = new AltosGreatCircle(line_start.lat, line_start.lng,
617 line_end.lat, line_end.lng);
619 for (Point offset : mapTiles.keySet()) {
620 AltosSiteMapTile tile = mapTiles.get(offset);
622 s = translatePoint(start, tileCoordOffset(offset));
623 e = translatePoint(end, tileCoordOffset(offset));
624 tile.set_line(new Line2D.Double(s.x, s.y, e.x, e.y), g.distance);
627 for (AltosSiteMapTile tile : mapTiles.values())
628 tile.set_line(null, 0);
632 LatLng latlng(MouseEvent e) {
633 if (!base_location_set)
636 Rectangle zerozero = mapTiles.get(new Point(0, 0)).getBounds();
638 return latlng(-centre.x + e.getPoint().x - zerozero.x, -centre.y + e.getPoint().y - zerozero.y);
641 /* MouseMotionListener methods */
642 public void mouseDragged(MouseEvent e) {
643 if (!GrabNDrag.grab_n_drag(e)) {
644 LatLng loc = latlng(e);
650 public void mouseMoved(MouseEvent e) {
653 /* MouseListener methods */
654 public void mouseClicked(MouseEvent e) {
657 public void mouseEntered(MouseEvent e) {
660 public void mouseExited(MouseEvent e) {
663 public void mousePressed(MouseEvent e) {
664 if (!GrabNDrag.grab_n_drag(e)) {
665 LatLng loc = latlng(e);
672 public void mouseReleased(MouseEvent e) {
675 JScrollPane pane = new JScrollPane();
677 public AltosSiteMap(int in_radius) {
680 comp = new JComponent() { };
682 comp.addMouseMotionListener(this);
683 comp.addMouseListener(this);
685 GrabNDrag scroller = new GrabNDrag(comp);
687 comp.setLayout(layout);
689 for (int x = -radius; x <= radius; x++) {
690 for (int y = -radius; y <= radius; y++) {
691 Point offset = new Point(x, y);
692 AltosSiteMapTile t = createTile(offset);
693 addTileAt(t, offset);
696 pane.setViewportView(comp);
697 pane.setPreferredSize(new Dimension(500,500));
698 pane.setVisible(true);
699 pane.setEnabled(true);
701 GridBagLayout my_layout = new GridBagLayout();
703 setLayout(my_layout);
705 GridBagConstraints c = new GridBagConstraints();
706 c.anchor = GridBagConstraints.CENTER;
707 c.fill = GridBagConstraints.BOTH;
718 zoom_label = new JLabel("", JLabel.CENTER);
721 c = new GridBagConstraints();
722 c.anchor = GridBagConstraints.CENTER;
723 c.fill = GridBagConstraints.HORIZONTAL;
730 JButton zoom_reset = new JButton("0");
731 zoom_reset.addActionListener(new ActionListener() {
732 public void actionPerformed(ActionEvent e) {
733 set_zoom(default_zoom);
737 c = new GridBagConstraints();
738 c.anchor = GridBagConstraints.CENTER;
739 c.fill = GridBagConstraints.HORIZONTAL;
746 JButton zoom_in = new JButton("+");
747 zoom_in.addActionListener(new ActionListener() {
748 public void actionPerformed(ActionEvent e) {
749 set_zoom(get_zoom() + 1);
753 c = new GridBagConstraints();
754 c.anchor = GridBagConstraints.CENTER;
755 c.fill = GridBagConstraints.HORIZONTAL;
762 JButton zoom_out = new JButton("-");
763 zoom_out.addActionListener(new ActionListener() {
764 public void actionPerformed(ActionEvent e) {
765 set_zoom(get_zoom() - 1);
768 c = new GridBagConstraints();
769 c.anchor = GridBagConstraints.CENTER;
770 c.fill = GridBagConstraints.HORIZONTAL;
777 final JComboBox<String> maptype_combo = new JComboBox<String>(maptype_labels);
779 maptype_combo.setEditable(false);
780 maptype_combo.setMaximumRowCount(maptype_combo.getItemCount());
781 maptype_combo.addItemListener(new ItemListener() {
782 public void itemStateChanged(ItemEvent e) {
783 maptype = maptype_combo.getSelectedIndex();
784 if (base_location_set)
790 c = new GridBagConstraints();
791 c.anchor = GridBagConstraints.CENTER;
792 c.fill = GridBagConstraints.HORIZONTAL;
797 add(maptype_combo, c);
800 public AltosSiteMap() {