+ AltosSiteMap asm = new AltosSiteMap(true);
+ asm.centre = asm.getBaseLocation(lat, lng);
+
+ Point2D.Double p = new Point2D.Double();
+ Point2D.Double p2;
+ int dx = -w/2, dy = -h/2;
+ for (int y = dy; y < h+dy; y++) {
+ for (int x = dx; x < w+dx; x++) {
+ LatLng map_latlng = asm.latlng(
+ -asm.centre.x + x*px_size + px_size/2,
+ -asm.centre.y + y*px_size + px_size/2);
+ File pngfile = asm.MapFile(map_latlng.lat, map_latlng.lng);
+ String pngurl = asm.MapURL(map_latlng.lat, map_latlng.lng);
+ if (pngfile.exists()) {
+ System.out.printf("Already have %s\n", pngfile);
+ } else if (AltosSiteMapCache.fetchMap(pngfile, pngurl)) {
+ System.out.printf("Fetched map %s\n", pngfile);
+ } else {
+ System.out.printf("# Failed to fetch file %s\n", pngfile);
+ System.out.printf(" wget -O '%s' ''\n", pngfile, pngurl);
+ }
+ }
+ }
+ }
+
+ private void initMap(AltosSiteMapTile tile, Point offset) {
+ Point2D.Double coord = tileCoordOffset(offset);
+
+ LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
+
+ File pngfile = MapFile(map_latlng.lat, map_latlng.lng);
+ String pngurl = MapURL(map_latlng.lat, map_latlng.lng);
+ bgLoadMap(tile, pngfile, pngurl);
+ }
+
+ private void initMaps(double lat, double lng) {
+ centre = getBaseLocation(lat, lng);
+
+ for (Point k : mapTiles.keySet()) {
+ initMap(mapTiles.get(k), k);
+ }
+ }
+
+ private File MapFile(double lat, double lng) {
+ char chlat = lat < 0 ? 'S' : 'N';
+ char chlng = lng < 0 ? 'E' : 'W';
+ if (lat < 0) lat = -lat;
+ if (lng < 0) lng = -lng;
+ return new File(AltosPreferences.logdir(),
+ String.format("map-%c%.6f,%c%.6f-%d.png",
+ chlat, lat, chlng, lng, zoom));
+ }
+
+ private String MapURL(double lat, double lng) {
+ return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=hybrid&format=png32", lat, lng, zoom, px_size, px_size);
+ }
+
+ boolean initialised = false;
+ Point2D.Double last_pt = null;
+ int last_state = -1;
+ public void show(final AltosState state, final int crc_errors) {
+ // if insufficient gps data, nothing to update
+ if (state.gps == null)
+ return;
+ if (!state.gps.locked) {
+ if (state.pad_lat == 0 && state.pad_lon == 0)
+ return;
+ if (state.gps.nsat < 4)
+ return;
+ }
+
+ if (!initialised) {
+ initMaps(state.pad_lat, state.pad_lon);
+ initialised = true;
+ }
+
+ final Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
+ if (last_pt == pt && last_state == state.state)
+ return;
+
+ if (last_pt == null) {
+ last_pt = pt;
+ }
+ boolean in_any = false;
+ for (Point offset : mapTiles.keySet()) {
+ AltosSiteMapTile tile = mapTiles.get(offset);
+ Point2D.Double ref, lref;
+ ref = translatePoint(pt, tileCoordOffset(offset));
+ lref = translatePoint(last_pt, tileCoordOffset(offset));
+ tile.show(state, crc_errors, lref, ref);
+ if (0 <= ref.x && ref.x < px_size)
+ if (0 <= ref.y && ref.y < px_size)
+ in_any = true;
+ }
+ if (!in_any) {
+ final AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
+ final Point offset = tileOffset(pt);
+ mapTiles.put(offset, tile);
+
+ Point2D.Double ref, lref;
+ ref = translatePoint(pt, tileCoordOffset(offset));
+ lref = translatePoint(last_pt, tileCoordOffset(offset));
+ tile.show(state, crc_errors, lref, ref);
+
+ initMap(tile, offset);
+
+ SwingUtilities.invokeLater( new Runnable() {
+ public void run() {
+ addTileAt(tile, offset);
+ setViewportView(comp);
+ }
+ } );
+ }
+ last_pt = pt;
+ last_state = state.state;
+ }
+
+ private void addTileAt(AltosSiteMapTile tile, Point offset) {
+ GridBagConstraints c = new GridBagConstraints();
+ c.anchor = GridBagConstraints.CENTER;
+ c.fill = GridBagConstraints.BOTH;
+
+ // put some space between the map tiles, debugging only
+ // c.insets = new Insets(5, 5, 5, 5);
+ //
+ c.gridx = offset.x + 100;
+ c.gridy = offset.y + 100;
+ layout.setConstraints(tile, c);
+ comp.add(tile);
+ }
+
+ private AltosSiteMap(boolean knowWhatYouAreDoing) {
+ if (!knowWhatYouAreDoing) {
+ throw new RuntimeException("Arggh.");
+ }
+ }
+
+ JComponent comp;
+ private GridBagLayout layout;
+
+ public AltosSiteMap() {
+ comp = new JComponent() {
+ GrabNDrag scroller = new GrabNDrag(this);
+ {
+ addMouseMotionListener(scroller);
+ addMouseListener(scroller);
+ setAutoscrolls(true);
+ }
+ };
+
+ layout = new GridBagLayout();
+ comp.setLayout(layout);
+
+ for (int x = -1; x <= 1; x++) {
+ for (int y = -1; y <= 1; y++) {
+ AltosSiteMapTile t = new AltosSiteMapTile(px_size);
+ Point offset = new Point(x, y);
+ mapTiles.put(offset, t);
+ addTileAt(t, offset);
+ }
+ }
+ setViewportView(comp);
+ setPreferredSize(new Dimension(500,200));
+ }
+}