git.gag.com Git - fw/altos/blob - altoslib/AltosMap.java

   1 /*
   2  * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
   3  *
   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; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 package org.altusmetrum.altoslib_12;
  20
  21 import java.io.*;
  22 import java.lang.*;
  23 import java.util.*;
  24 import java.util.concurrent.*;
  25
  26 public class AltosMap implements AltosMapTileListener, AltosMapStoreListener {
  27
  28         public static final int px_size = 512;
  29
  30         public static final int maptype_hybrid = 0;
  31         public static final int maptype_roadmap = 1;
  32         public static final int maptype_satellite = 2;
  33         public static final int maptype_terrain = 3;
  34         public static final int maptype_default = maptype_hybrid;
  35
  36         public static final int default_zoom = 15;
  37         public static final int min_zoom = 3;
  38         public static final int max_zoom = 21;
  39
  40         public static final String[] maptype_names = {
  41                 "hybrid",
  42                 "roadmap",
  43                 "satellite",
  44                 "terrain"
  45         };
  46
  47         public static final String[] maptype_labels = {
  48                 "Hybrid",
  49                 "Roadmap",
  50                 "Satellite",
  51                 "Terrain"
  52         };
  53
  54         AltosMapInterface       map_interface;
  55         int                     scale;
  56
  57         AltosMapCache           cache;
  58
  59         public AltosMapCache cache() { return cache; }
  60
  61         LinkedList<AltosMapMark> marks = new LinkedList<AltosMapMark>();
  62
  63         AltosMapPath            path;
  64         AltosMapLine            line;
  65         public AltosLatLon      last_position;
  66
  67         boolean         have_boost = false;
  68         boolean         have_landed = false;
  69
  70         ConcurrentHashMap<AltosPointInt,AltosMapTile> tiles = new ConcurrentHashMap<AltosPointInt,AltosMapTile>();
  71         int             load_radius;
  72         AltosLatLon     load_centre = null;
  73         AltosMapTileListener    load_listener;
  74
  75         int             zoom = AltosMap.default_zoom;
  76         int             maptype = AltosMap.maptype_default;
  77
  78         long            user_input_time;
  79
  80         /* Milliseconds to wait after user action before auto-scrolling
  81          */
  82         static final long auto_scroll_delay = 20 * 1000;
  83
  84         public AltosMapTransform        transform;
  85         AltosLatLon             centre;
  86
  87         public void reset() {
  88                 // nothing
  89         }
  90
  91         /* MapInterface wrapping functions */
  92
  93         public void repaint(int x, int y, int w, int h) {
  94                 map_interface.repaint(new AltosRectangle(x, y, w, h));
  95         }
  96
  97         public void repaint(AltosMapRectangle damage, int pad) {
  98                 AltosRectangle r = transform.screen(damage);
  99                 repaint(r.x - pad, r.y - pad, r.width + pad * 2, r.height + pad * 2);
 100         }
 101
 102         public void repaint() {
 103                 map_interface.repaint();
 104         }
 105
 106         public int width() {
 107                 return map_interface.width();
 108         }
 109
 110         public int height() {
 111                 return map_interface.height();
 112         }
 113
 114         public void debug(String format, Object ... arguments) {
 115                 map_interface.debug(format, arguments);
 116         }
 117
 118         static public AltosPointInt floor(AltosPointDouble point) {
 119                 return new AltosPointInt ((int) Math.floor(point.x / AltosMap.px_size) * AltosMap.px_size,
 120                                               (int) Math.floor(point.y / AltosMap.px_size) * AltosMap.px_size);
 121         }
 122
 123         static public AltosPointInt ceil(AltosPointDouble point) {
 124                 return new AltosPointInt ((int) Math.ceil(point.x / AltosMap.px_size) * AltosMap.px_size,
 125                                               (int) Math.ceil(point.y / AltosMap.px_size) * AltosMap.px_size);
 126         }
 127
 128         public void notice_user_input() {
 129                 user_input_time = System.currentTimeMillis();
 130         }
 131
 132         public boolean recent_user_input() {
 133                 return (System.currentTimeMillis() - user_input_time) < auto_scroll_delay;
 134         }
 135
 136         public boolean has_centre() {
 137                 return centre != null;
 138         }
 139
 140         public boolean far_from_centre(AltosLatLon lat_lon) {
 141
 142                 if (centre == null || transform == null)
 143                         return true;
 144
 145                 AltosPointDouble        screen = transform.screen(lat_lon);
 146
 147                 int             width = width();
 148                 int             dx = Math.abs ((int) (double) screen.x - width/2);
 149
 150                 if (dx > width / 4)
 151                         return true;
 152
 153                 int             height = height();
 154                 int             dy = Math.abs ((int) (double) screen.y - height/2);
 155
 156                 if (dy > height / 4)
 157                         return true;
 158
 159                 return false;
 160         }
 161
 162         public void set_transform() {
 163                 if (centre != null) {
 164                         transform = new AltosMapTransform(width(), height(), zoom, centre);
 165                         repaint();
 166                 }
 167         }
 168
 169         private void set_zoom_label() {
 170                 map_interface.set_zoom_label(String.format("Zoom %d", get_zoom() - default_zoom));
 171         }
 172
 173
 174         public boolean set_zoom(int zoom) {
 175                 notice_user_input();
 176                 if (AltosMap.min_zoom <= zoom && zoom <= AltosMap.max_zoom && zoom != this.zoom) {
 177                         this.zoom = zoom;
 178                         tiles.clear();
 179                         set_transform();
 180                         set_zoom_label();
 181                         return true;
 182                 }
 183                 return false;
 184         }
 185
 186         public boolean set_zoom_centre(int zoom, AltosPointInt centre) {
 187                 AltosLatLon     mouse_lat_lon = null;
 188                 boolean         ret;
 189
 190                 if (transform != null)
 191                         mouse_lat_lon = transform.screen_lat_lon(centre);
 192
 193                 ret = set_zoom(zoom);
 194
 195                 if (ret && mouse_lat_lon != null) {
 196                         AltosPointDouble        new_mouse = transform.screen(mouse_lat_lon);
 197
 198                         double  dx = width()/2.0 - centre.x;
 199                         double  dy = height()/2.0 - centre.y;
 200
 201                         AltosLatLon     new_centre = transform.screen_lat_lon(new AltosPointDouble(new_mouse.x + dx, new_mouse.y + dy));
 202
 203                         centre(new_centre);
 204                 }
 205
 206                 return ret;
 207         }
 208
 209         public int get_zoom() {
 210                 return zoom;
 211         }
 212
 213         public boolean set_maptype(int maptype) {
 214                 if (maptype != this.maptype) {
 215                         this.maptype = maptype;
 216                         tiles.clear();
 217                         repaint();
 218                         return true;
 219                 }
 220                 return false;
 221         }
 222
 223         public void show(AltosGPS gps, int state) {
 224
 225                 /*
 226                  * If insufficient gps data, nothing to update
 227                  */
 228
 229                 if (gps == null)
 230                         return;
 231
 232                 if (!gps.locked && gps.nsat < 4)
 233                         return;
 234
 235                 switch (state) {
 236                 case AltosLib.ao_flight_boost:
 237                         if (!have_boost) {
 238                                 add_mark(gps.lat, gps.lon, state);
 239                                 have_boost = true;
 240                         }
 241                         break;
 242                 case AltosLib.ao_flight_landed:
 243                         if (!have_landed) {
 244                                 add_mark(gps.lat, gps.lon, state);
 245                                 have_landed = true;
 246                         }
 247                         break;
 248                 }
 249
 250                 if (path != null) {
 251                         AltosMapRectangle       damage = path.add(gps.lat, gps.lon, state);
 252
 253                         if (damage != null)
 254                                 repaint(damage, AltosMapPath.stroke_width);
 255                 }
 256
 257                 last_position = new AltosLatLon(gps.lat, gps.lon);
 258
 259                 maybe_centre(gps.lat, gps.lon);
 260         }
 261
 262         public void show(AltosState state, AltosListenerState listener_state) {
 263                 show(state.gps, state.state());
 264         }
 265
 266         public void centre(AltosLatLon lat_lon) {
 267                 centre = lat_lon;
 268                 set_transform();
 269         }
 270
 271         public void centre(double lat, double lon) {
 272                 centre(new AltosLatLon(lat, lon));
 273         }
 274
 275         public void centre(AltosGPS gps) {
 276                 if (!gps.locked && gps.nsat < 4)
 277                         return;
 278                 centre(gps.lat, gps.lon);
 279         }
 280
 281         public void centre(AltosState state) {
 282                 centre(state.gps);
 283         }
 284
 285         public void maybe_centre(double lat, double lon) {
 286                 AltosLatLon     lat_lon = new AltosLatLon(lat, lon);
 287                 if (centre == null || (!recent_user_input() && far_from_centre(lat_lon)))
 288                         centre(lat_lon);
 289         }
 290
 291         public void add_mark(double lat, double lon, int state) {
 292                 synchronized(marks) {
 293                         AltosMapMark mark = map_interface.new_mark(lat, lon, state);
 294                         if (mark != null)
 295                                 marks.add(mark);
 296                 }
 297                 repaint();
 298         }
 299
 300         public void clear_marks() {
 301                 synchronized(marks) {
 302                         marks.clear();
 303                 }
 304         }
 305
 306         private void make_tiles() {
 307                 AltosPointInt   upper_left;
 308                 AltosPointInt   lower_right;
 309
 310                 if (load_centre != null) {
 311                         AltosPointInt centre = floor(transform.point(load_centre));
 312
 313                         upper_left = new AltosPointInt(centre.x - load_radius * AltosMap.px_size,
 314                                                                centre.y - load_radius * AltosMap.px_size);
 315                         lower_right = new AltosPointInt(centre.x + load_radius * AltosMap.px_size,
 316                                                                 centre.y + load_radius * AltosMap.px_size);
 317                 } else {
 318                         upper_left = floor(transform.screen_point(new AltosPointInt(0, 0)));
 319                         lower_right = floor(transform.screen_point(new AltosPointInt(width(), height())));
 320                 }
 321
 322                 Enumeration<AltosPointInt> keyEnumeration = tiles.keys();
 323
 324                 while (keyEnumeration.hasMoreElements()) {
 325                         AltosPointInt point = keyEnumeration.nextElement();
 326                         if (point.x < upper_left.x || lower_right.x < point.x ||
 327                             point.y < upper_left.y || lower_right.y < point.y) {
 328                                 tiles.remove(point);
 329                         }
 330                 }
 331
 332                 cache.set_cache_size((width() / AltosMap.px_size + 2) * (height() / AltosMap.px_size + 2));
 333
 334                 for (int y = (int) upper_left.y; y <= lower_right.y; y += AltosMap.px_size) {
 335                         for (int x = (int) upper_left.x; x <= lower_right.x; x += AltosMap.px_size) {
 336                                 AltosPointInt   point = new AltosPointInt(x, y);
 337
 338                                 if (!tiles.containsKey(point)) {
 339                                         AltosLatLon     ul = transform.lat_lon(point);
 340                                         AltosLatLon     center = transform.lat_lon(new AltosPointDouble(x + AltosMap.px_size/2, y + AltosMap.px_size/2));
 341                                         AltosMapTile tile = map_interface.new_tile(cache, ul, center, zoom, maptype, px_size, scale);
 342                                         debug("show state %s url %s\n", AltosMapTile.status_name(tile.store.status()), tile.store.url);
 343                                         tile.add_listener(this);
 344                                         tiles.put(point, tile);
 345                                 }
 346                         }
 347                 }
 348         }
 349
 350         public void set_load_params(int new_zoom, int new_type, double lat, double lon, int radius, AltosMapTileListener listener) {
 351                 if (AltosMap.min_zoom <= new_zoom && new_zoom <= AltosMap.max_zoom)
 352                         zoom = new_zoom;
 353                 maptype = new_type;
 354                 load_centre = new AltosLatLon(lat, lon);
 355                 load_radius = radius;
 356                 load_listener = listener;
 357                 centre(lat, lon);
 358                 tiles.clear();
 359                 make_tiles();
 360                 repaint();
 361         }
 362
 363         public String getName() {
 364                 return "Map";
 365         }
 366
 367         public void paint() {
 368                 if (centre != null)
 369                         make_tiles();
 370
 371                 if (transform == null)
 372                         return;
 373
 374                 for (AltosMapTile tile : tiles.values())
 375                         tile.paint(transform);
 376
 377                 synchronized(marks) {
 378                         for (AltosMapMark mark : marks)
 379                                 mark.paint(transform);
 380                 }
 381
 382                 if (path != null)
 383                         path.paint(transform);
 384
 385                 if (line != null)
 386                         line.paint(transform);
 387         }
 388
 389         /* AltosMapTileListener methods */
 390         public synchronized void notify_tile(AltosMapTile tile, int status) {
 391                 Enumeration<AltosPointInt> keyEnumeration = tiles.keys();
 392
 393                 while (keyEnumeration.hasMoreElements()) {
 394                         AltosPointInt point = keyEnumeration.nextElement();
 395                         if (tile == tiles.get(point)) {
 396                                 AltosPointInt   screen = transform.screen(point);
 397                                 repaint(screen.x, screen.y, AltosMap.px_size, AltosMap.px_size);
 398                         }
 399                 }
 400         }
 401
 402         /* AltosMapStoreListener methods */
 403         public synchronized void notify_store(AltosMapStore store, int status) {
 404                 if (load_listener != null) {
 405                         for (AltosMapTile tile : tiles.values())
 406                                 if (store.equals(tile.store))
 407                                         load_listener.notify_tile(tile, status);
 408                 }
 409         }
 410
 411         /* UI elements */
 412
 413         AltosPointInt   drag_start;
 414
 415         boolean         dragged;
 416
 417         static final double drag_far = 20;
 418
 419         private void drag(int x, int y) {
 420                 if (drag_start == null)
 421                         return;
 422
 423                 int dx = x - drag_start.x;
 424                 int dy = y - drag_start.y;
 425
 426                 double distance = Math.hypot(dx, dy);
 427
 428                 if (distance > drag_far)
 429                         dragged = true;
 430
 431                 if (transform == null)
 432                         return;
 433
 434                 AltosLatLon new_centre = transform.screen_lat_lon(new AltosPointInt(width() / 2 - dx, height() / 2 - dy));
 435                 centre(new_centre);
 436                 drag_start = new AltosPointInt(x, y);
 437         }
 438
 439         private void drag_start(int x, int y) {
 440                 drag_start = new AltosPointInt(x, y);
 441                 dragged = false;
 442         }
 443
 444         private void drag_stop(int x, int y) {
 445                 if (!dragged) {
 446                         if (transform == null) {
 447                                 return;
 448                         }
 449                         map_interface.select_object (transform.screen_lat_lon(new AltosPointInt(x,y)));
 450                 }
 451         }
 452
 453         private void line_start(int x, int y) {
 454                 if (line != null && transform != null) {
 455                         line.pressed(new AltosPointInt(x, y), transform);
 456                         repaint();
 457                 }
 458         }
 459
 460         private void line(int x, int y) {
 461                 if (line != null && transform != null) {
 462                         line.dragged(new AltosPointInt(x, y), transform);
 463                         repaint();
 464                 }
 465         }
 466
 467         public void touch_start(int x, int y, boolean is_drag) {
 468                 notice_user_input();
 469                 if (is_drag)
 470                         drag_start(x, y);
 471                 else
 472                         line_start(x, y);
 473         }
 474
 475         public void touch_continue(int x, int y, boolean is_drag) {
 476                 notice_user_input();
 477                 if (is_drag)
 478                         drag(x, y);
 479                 else
 480                         line(x, y);
 481         }
 482
 483         public void touch_stop(int x, int y, boolean is_drag) {
 484                 notice_user_input();
 485                 if (is_drag)
 486                         drag_stop(x, y);
 487         }
 488
 489         public AltosMap(AltosMapInterface map_interface, int scale) {
 490                 this.map_interface = map_interface;
 491                 this.scale = scale;
 492                 cache = new AltosMapCache(map_interface);
 493                 line = map_interface.new_line();
 494                 path = map_interface.new_path();
 495                 set_zoom_label();
 496         }
 497
 498         public AltosMap(AltosMapInterface map_interface) {
 499                 this(map_interface, 1);
 500         }
 501 }