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.Point2D;
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 {
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 ConcurrentHashMap<Point,AltosSiteMapTile> mapTiles = new ConcurrentHashMap<Point,AltosSiteMapTile>();
164 Point2D.Double centre;
166 private Point2D.Double tileCoordOffset(Point p) {
167 return new Point2D.Double(centre.x - p.x*px_size,
168 centre.y - p.y*px_size);
171 private Point tileOffset(Point2D.Double p) {
172 return new Point((int)Math.floor((centre.x+p.x)/px_size),
173 (int)Math.floor((centre.y+p.y)/px_size));
176 private Point2D.Double getBaseLocation(double lat, double lng) {
177 Point2D.Double locn = pt(0,0), north_step;
179 scale_x = 256/360.0 * Math.pow(2, zoom);
180 scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
182 locn.x = -px_size * Math.floor(locn.x/px_size);
183 locn.y = -px_size * Math.floor(locn.y/px_size);
187 public void reset() {
191 public void set_font() {
192 for (AltosSiteMapTile tile : mapTiles.values())
193 tile.set_font(AltosUILib.value_font);
196 static final int load_mode_cached = 1;
197 static final int load_mode_uncached = 2;
199 private boolean load_map(final AltosSiteMapTile tile,
200 final File pngfile, String pngurl,
203 boolean has_map = AltosSiteMapCache.has_map(pngfile, pngurl);
204 if ((load_mode & load_mode_uncached) == 0 && !has_map)
206 if ((load_mode & load_mode_cached) == 0 && has_map)
209 tile.set_status(AltosSiteMapCache.loading);
210 int status = AltosSiteMapCache.fetch_map(pngfile, pngurl);
211 if (status == AltosSiteMapCache.success) {
212 SwingUtilities.invokeLater(new Runnable() {
214 tile.load_map(pngfile);
218 tile.set_status(status);
219 System.out.printf("# Failed to fetch file %s (status %d)\n", pngfile, status);
220 System.out.printf(" wget -O '%s' '%s'\n", pngfile, pngurl);
221 System.out.printf(" sleep 1\n");
227 class AltosSiteMapPrefetch {
235 public AltosSiteMapPrefetch prefetchMap(int x, int y) {
236 AltosSiteMapPrefetch prefetch = new AltosSiteMapPrefetch();
237 LatLng map_latlng = latlng(
238 -centre.x + x*px_size + px_size/2,
239 -centre.y + y*px_size + px_size/2);
240 prefetch.pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom, maptype_hybrid);
241 prefetch.pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom, maptype_hybrid);
242 if (AltosSiteMapCache.has_map(prefetch.pngfile, prefetch.pngurl)) {
244 } else if (AltosSiteMapCache.fetch_map(prefetch.pngfile, prefetch.pngurl) == AltosSiteMapCache.success) {
247 prefetch.result = -1;
252 public static void prefetchMaps(double lat, double lng) {
253 int w = AltosSiteMapPreload.width;
254 int h = AltosSiteMapPreload.height;
255 AltosSiteMap asm = new AltosSiteMap(true);
256 asm.centre = asm.getBaseLocation(lat, lng);
258 //Point2D.Double p = new Point2D.Double();
260 int dx = -w/2, dy = -h/2;
261 for (int y = dy; y < h+dy; y++) {
262 for (int x = dx; x < w+dx; x++) {
263 AltosSiteMapPrefetch prefetch = asm.prefetchMap(x, y);
264 switch (prefetch.result) {
266 System.out.printf("Already have %s\n", prefetch.pngfile);
269 System.out.printf("Fetched map %s\n", prefetch.pngfile);
272 System.out.printf("# Failed to fetch file %s\n", prefetch.pngfile);
273 System.out.printf(" wget -O '%s' ''\n",
274 prefetch.pngfile, prefetch.pngurl);
281 public File init_map(Point offset, int load_mode) {
282 AltosSiteMapTile tile = mapTiles.get(offset);
283 Point2D.Double coord = tileCoordOffset(offset);
285 LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
287 File pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom, maptype);
288 String pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom, maptype);
289 load_map(tile, pngfile, pngurl, load_mode);
293 public void initAndFinishMapAsync (final AltosSiteMapTile tile, final Point offset) {
294 Thread thread = new Thread() {
296 init_map(offset, load_mode_cached|load_mode_uncached);
297 finishTileLater(tile, offset);
304 boolean base_location_set = false;
306 public void clear_base_location() {
307 base_location_set = false;
309 points = new LinkedList<MapPoint>();
310 for (AltosSiteMapTile tile : mapTiles.values())
314 public void setBaseLocation(double lat, double lng) {
317 base_location_set = true;
318 for (AltosSiteMapTile tile : mapTiles.values())
321 centre = getBaseLocation(lat, lng);
322 scrollRocketToVisible(pt(lat,lng));
325 private void initMaps(double lat, double lng) {
326 setBaseLocation(lat, lng);
328 Thread thread = new Thread() {
330 for (Point k : mapTiles.keySet())
331 init_map(k, load_mode_cached);
332 for (Point k : mapTiles.keySet())
333 init_map(k, load_mode_uncached);
339 private static File MapFile(double lat, double lng, int zoom, int maptype) {
340 char chlat = lat < 0 ? 'S' : 'N';
341 char chlng = lng < 0 ? 'W' : 'E';
342 if (lat < 0) lat = -lat;
343 if (lng < 0) lng = -lng;
344 String maptype_string = String.format("%s-", maptype_names[maptype]);
345 String format_string;
346 if (maptype == maptype_hybrid || maptype == maptype_satellite || maptype == maptype_terrain)
347 format_string = "jpg";
349 format_string = "png";
350 return new File(AltosUIPreferences.mapdir(),
351 String.format("map-%c%.6f,%c%.6f-%s%d.%s",
352 chlat, lat, chlng, lng, maptype_string, zoom, format_string));
355 private static String MapURL(double lat, double lng, int zoom, int maptype) {
356 String format_string;
357 if (maptype == maptype_hybrid || maptype == maptype_satellite || maptype == maptype_terrain)
358 format_string = "jpg";
360 format_string = "png32";
361 return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=%s&format=%s",
362 lat, lng, zoom, px_size, px_size, maptype_names[maptype], format_string);
365 boolean initialised = false;
366 MapPoint last_point = null;
369 public void show(double lat, double lon) {
370 System.out.printf ("show %g %g\n", lat, lon);
372 // initMaps(lat, lon);
373 // scrollRocketToVisible(pt(lat, lon));
378 public void set_zoom_label() {
379 zoom_label.setText(String.format("- %d -", zoom - default_zoom));
382 public void set_zoom(int zoom) {
383 if (min_zoom <= zoom && zoom <= max_zoom) {
385 if (base_location_set)
392 public int get_zoom() {
396 public void draw(MapPoint last_point, MapPoint point) {
397 boolean force_ensure = false;
398 if (last_point == null) {
403 Point2D.Double pt = pt(point.lat, point.lon);
404 Point2D.Double last_pt = pt(last_point.lat, last_point.lon);
406 boolean in_any = false;
407 for (Point offset : mapTiles.keySet()) {
408 AltosSiteMapTile tile = mapTiles.get(offset);
409 Point2D.Double ref, lref;
410 ref = translatePoint(pt, tileCoordOffset(offset));
411 lref = translatePoint(last_pt, tileCoordOffset(offset));
412 tile.show(point.state, lref, ref);
413 if (0 <= ref.x && ref.x < px_size)
414 if (0 <= ref.y && ref.y < px_size)
418 Point offset = tileOffset(pt);
420 Point2D.Double ref, lref;
421 ref = translatePoint(pt, tileCoordOffset(offset));
422 lref = translatePoint(last_pt, tileCoordOffset(offset));
424 AltosSiteMapTile tile = createTile(offset);
425 tile.show(point.state, lref, ref);
426 initAndFinishMapAsync(tile, offset);
429 scrollRocketToVisible(pt);
431 if (force_ensure || offset != tileOffset(last_pt)) {
432 ensureTilesAround(offset);
436 public void redraw() {
437 MapPoint last_point = null;
439 for (MapPoint point : points) {
440 draw(last_point, point);
444 draw_circle(circle_lat, circle_lon);
447 public void show(final AltosState state, final AltosListenerState listener_state) {
448 // if insufficient gps data, nothing to update
449 AltosGPS gps = state.gps;
454 if (!gps.locked && gps.nsat < 4)
458 if (state.pad_lat != AltosLib.MISSING && state.pad_lon != AltosLib.MISSING) {
459 initMaps(state.pad_lat, state.pad_lon);
461 } else if (gps.lat != AltosLib.MISSING && gps.lon != AltosLib.MISSING) {
462 initMaps(gps.lat, gps.lon);
469 MapPoint point = new MapPoint(gps.lat, gps.lon, state.state);
471 if (point.equals(last_point))
476 draw(last_point, point);
481 public void centre(Point2D.Double pt) {
482 Rectangle r = comp.getVisibleRect();
483 Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
484 int dx = (int)copt.x - r.width/2 - r.x;
485 int dy = (int)copt.y - r.height/2 - r.y;
490 comp.scrollRectToVisible(r);
493 public void centre(AltosState state) {
494 if (!state.gps.locked && state.gps.nsat < 4)
496 centre(pt(state.gps.lat, state.gps.lon));
499 private double circle_lat, circle_lon;
500 private boolean circle_set = false;
502 public void draw_circle(double lat, double lon) {
507 Point2D.Double pt = pt(lat, lon);
509 for (Point offset : mapTiles.keySet()) {
510 AltosSiteMapTile tile = mapTiles.get(offset);
511 Point2D.Double ref = translatePoint(pt, tileCoordOffset(offset));
516 private AltosSiteMapTile createTile(Point offset) {
517 AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
518 tile.set_font(AltosUILib.value_font);
519 mapTiles.put(offset, tile);
522 private void finishTileLater(final AltosSiteMapTile tile,
525 SwingUtilities.invokeLater( new Runnable() {
527 addTileAt(tile, offset);
532 private void ensureTilesAround(Point base_offset) {
533 for (int x = -radius; x <= radius; x++) {
534 for (int y = -radius; y <= radius; y++) {
535 Point offset = new Point(base_offset.x + x, base_offset.y + y);
536 if (mapTiles.containsKey(offset))
538 AltosSiteMapTile tile = createTile(offset);
539 initAndFinishMapAsync(tile, offset);
544 private Point topleft = new Point(0,0);
545 private void scrollRocketToVisible(Point2D.Double pt) {
546 Rectangle r = comp.getVisibleRect();
547 Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
549 int dx = (int)copt.x - r.width/2 - r.x;
550 int dy = (int)copt.y - r.height/2 - r.y;
551 if (Math.abs(dx) > r.width/4 || Math.abs(dy) > r.height/4) {
554 comp.scrollRectToVisible(r);
558 private void addTileAt(AltosSiteMapTile tile, Point offset) {
559 if (Math.abs(offset.x) >= MAX_TILE_DELTA ||
560 Math.abs(offset.y) >= MAX_TILE_DELTA)
562 System.out.printf("Rocket too far away from pad (tile %d,%d)\n",
567 boolean review = false;
568 Rectangle r = comp.getVisibleRect();
569 if (offset.x < topleft.x) {
570 r.x += (topleft.x - offset.x) * px_size;
571 topleft.x = offset.x;
574 if (offset.y < topleft.y) {
575 r.y += (topleft.y - offset.y) * px_size;
576 topleft.y = offset.y;
579 GridBagConstraints c = new GridBagConstraints();
580 c.anchor = GridBagConstraints.CENTER;
581 c.fill = GridBagConstraints.BOTH;
582 // put some space between the map tiles, debugging only
583 // c.insets = new Insets(5, 5, 5, 5);
585 c.gridx = offset.x + MAX_TILE_DELTA;
586 c.gridy = offset.y + MAX_TILE_DELTA;
587 layout.setConstraints(tile, c);
591 // comp.scrollRectToVisible(r);
595 private AltosSiteMap(boolean knowWhatYouAreDoing) {
596 if (!knowWhatYouAreDoing) {
597 throw new RuntimeException("Arggh.");
601 JComponent comp = new JComponent() { };
602 private GridBagLayout layout = new GridBagLayout();
604 JScrollPane pane = new JScrollPane();
606 public AltosSiteMap(int in_radius) {
609 GrabNDrag scroller = new GrabNDrag(comp);
611 comp.setLayout(layout);
613 for (int x = -radius; x <= radius; x++) {
614 for (int y = -radius; y <= radius; y++) {
615 Point offset = new Point(x, y);
616 AltosSiteMapTile t = createTile(offset);
617 addTileAt(t, offset);
620 pane.setViewportView(comp);
621 pane.setPreferredSize(new Dimension(500,500));
622 pane.setVisible(true);
623 pane.setEnabled(true);
625 GridBagLayout my_layout = new GridBagLayout();
627 setLayout(my_layout);
629 GridBagConstraints c = new GridBagConstraints();
630 c.anchor = GridBagConstraints.CENTER;
631 c.fill = GridBagConstraints.BOTH;
642 zoom_label = new JLabel("", JLabel.CENTER);
645 c = new GridBagConstraints();
646 c.anchor = GridBagConstraints.CENTER;
647 c.fill = GridBagConstraints.HORIZONTAL;
654 JButton zoom_reset = new JButton("0");
655 zoom_reset.addActionListener(new ActionListener() {
656 public void actionPerformed(ActionEvent e) {
657 set_zoom(default_zoom);
661 c = new GridBagConstraints();
662 c.anchor = GridBagConstraints.CENTER;
663 c.fill = GridBagConstraints.HORIZONTAL;
670 JButton zoom_in = new JButton("+");
671 zoom_in.addActionListener(new ActionListener() {
672 public void actionPerformed(ActionEvent e) {
673 set_zoom(get_zoom() + 1);
677 c = new GridBagConstraints();
678 c.anchor = GridBagConstraints.CENTER;
679 c.fill = GridBagConstraints.HORIZONTAL;
686 JButton zoom_out = new JButton("-");
687 zoom_out.addActionListener(new ActionListener() {
688 public void actionPerformed(ActionEvent e) {
689 set_zoom(get_zoom() - 1);
692 c = new GridBagConstraints();
693 c.anchor = GridBagConstraints.CENTER;
694 c.fill = GridBagConstraints.HORIZONTAL;
701 final JComboBox<String> maptype_combo = new JComboBox<String>(maptype_labels);
703 maptype_combo.setEditable(false);
704 maptype_combo.setMaximumRowCount(maptype_combo.getItemCount());
705 maptype_combo.addItemListener(new ItemListener() {
706 public void itemStateChanged(ItemEvent e) {
707 maptype = maptype_combo.getSelectedIndex();
708 if (base_location_set)
714 c = new GridBagConstraints();
715 c.anchor = GridBagConstraints.CENTER;
716 c.fill = GridBagConstraints.HORIZONTAL;
721 add(maptype_combo, c);
724 public AltosSiteMap() {