+++ /dev/null
-/*
- * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-package altosui;
-
-import java.awt.*;
-import java.awt.image.*;
-import java.awt.event.*;
-import javax.swing.*;
-import javax.swing.event.MouseInputAdapter;
-import javax.imageio.ImageIO;
-import javax.swing.table.*;
-import java.io.*;
-import java.util.*;
-import java.text.*;
-import java.util.prefs.*;
-import java.lang.Math;
-import java.awt.geom.Point2D;
-import java.awt.geom.Line2D;
-
-public class AltosSiteMap extends JScrollPane implements AltosFlightDisplay {
- // preferred vertical step in a tile in naut. miles
- // will actually choose a step size between x and 2x, where this
- // is 1.5x
- static final double tile_size_nmi = 0.75;
-
- static final int px_size = 512;
-
- static final int MAX_TILE_DELTA = 100;
-
- private static Point2D.Double translatePoint(Point2D.Double p,
- Point2D.Double d)
- {
- return new Point2D.Double(p.x + d.x, p.y + d.y);
- }
-
- static class LatLng {
- public double lat, lng;
- public LatLng(double lat, double lng) {
- this.lat = lat;
- this.lng = lng;
- }
- }
-
- // based on google js
- // http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
- // search for fromLatLngToPoint and fromPointToLatLng
- private static Point2D.Double pt(LatLng latlng, int zoom) {
- double scale_x = 256/360.0 * Math.pow(2, zoom);
- double scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
- return pt(latlng, scale_x, scale_y);
- }
-
- private static Point2D.Double pt(LatLng latlng,
- double scale_x, double scale_y)
- {
- Point2D.Double res = new Point2D.Double();
- double e;
-
- res.x = latlng.lng * scale_x;
-
- e = Math.sin(Math.toRadians(latlng.lat));
- e = Math.max(e,-(1-1.0E-15));
- e = Math.min(e, 1-1.0E-15 );
-
- res.y = 0.5*Math.log((1+e)/(1-e))*-scale_y;
- return res;
- }
-
- static private LatLng latlng(Point2D.Double pt,
- double scale_x, double scale_y)
- {
- double lat, lng;
- double rads;
-
- lng = pt.x/scale_x;
- rads = 2 * Math.atan(Math.exp(-pt.y/scale_y));
- lat = Math.toDegrees(rads - Math.PI/2);
-
- return new LatLng(lat,lng);
- }
-
- int zoom;
- double scale_x, scale_y;
-
- private Point2D.Double pt(double lat, double lng) {
- return pt(new LatLng(lat, lng), scale_x, scale_y);
- }
-
- private LatLng latlng(double x, double y) {
- return latlng(new Point2D.Double(x,y), scale_x, scale_y);
- }
- private LatLng latlng(Point2D.Double pt) {
- return latlng(pt, scale_x, scale_y);
- }
-
- HashMap<Point,AltosSiteMapTile> mapTiles = new HashMap<Point,AltosSiteMapTile>();
- Point2D.Double centre;
-
- private Point2D.Double tileCoordOffset(Point p) {
- return new Point2D.Double(centre.x - p.x*px_size,
- centre.y - p.y * px_size);
- }
-
- private Point tileOffset(Point2D.Double p) {
- return new Point((int)Math.floor((centre.x+p.x)/px_size),
- (int)Math.floor((centre.y+p.y)/px_size));
- }
-
- private Point2D.Double getBaseLocation(double lat, double lng) {
- Point2D.Double locn, north_step;
-
- zoom = 2;
- // stupid loop structure to please Java's control flow analysis
- do {
- zoom++;
- scale_x = 256/360.0 * Math.pow(2, zoom);
- scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
- locn = pt(lat, lng);
- north_step = pt(lat+tile_size_nmi*4/3/60.0, lng);
- if (locn.y - north_step.y > px_size)
- break;
- } while (zoom < 22);
- locn.x = -px_size * Math.floor(locn.x/px_size);
- locn.y = -px_size * Math.floor(locn.y/px_size);
- return locn;
- }
-
- public void reset() {
- // nothing
- }
-
- private void bgLoadMap(final AltosSiteMapTile tile,
- final File pngfile, final String pngurl)
- {
- //System.out.printf("Loading/fetching map %s\n", pngfile);
- Thread thread = new Thread() {
- public void run() {
- ImageIcon res;
- res = AltosSiteMapCache.fetchAndLoadMap(pngfile, pngurl);
- if (res != null) {
- tile.loadMap(res);
- } else {
- System.out.printf("# Failed to fetch file %s\n", pngfile);
- System.out.printf(" wget -O '%s' ''\n", pngfile, pngurl);
- }
- }
- };
- thread.start();
- }
-
- public static void prefetchMaps(double lat, double lng, int w, int h) {
- AltosPreferences.init(null);
-
- 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 && state.gps.nsat < 4)
- return;
-
- if (!initialised) {
- if (state.pad_lat != 0 || state.pad_lon != 0) {
- initMaps(state.pad_lat, state.pad_lon);
- initialised = true;
- } else if (state.gps.lat != 0 || state.gps.lon != 0) {
- initMaps(state.gps.lat, state.gps.lon);
- initialised = true;
- } else {
- return;
- }
- }
-
- 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;
- }
-
- Point offset = tileOffset(pt);
- if (!in_any) {
- Point2D.Double ref, lref;
- ref = translatePoint(pt, tileCoordOffset(offset));
- lref = translatePoint(last_pt, tileCoordOffset(offset));
-
- AltosSiteMapTile tile = createTile(offset);
- tile.show(state, crc_errors, lref, ref);
- initMap(tile, offset);
- finishTileLater(tile, offset);
- }
-
- scrollRocketToVisible(pt);
-
- if (offset != tileOffset(last_pt)) {
- ensureTilesAround(offset);
- }
-
- last_pt = pt;
- last_state = state.state;
- }
-
- private AltosSiteMapTile createTile(Point offset) {
- AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
- mapTiles.put(offset, tile);
- return tile;
- }
- private void finishTileLater(final AltosSiteMapTile tile,
- final Point offset)
- {
- SwingUtilities.invokeLater( new Runnable() {
- public void run() {
- addTileAt(tile, offset);
- }
- } );
- }
-
- private void ensureTilesAround(Point base_offset) {
- for (int x = -1; x <= 1; x++) {
- for (int y = -1; y <= 1; y++) {
- Point offset = new Point(base_offset.x + x, base_offset.y + y);
- if (mapTiles.containsKey(offset))
- continue;
- AltosSiteMapTile tile = createTile(offset);
- initMap(tile, offset);
- finishTileLater(tile, offset);
- }
- }
- }
-
- private Point topleft = new Point(0,0);
- private void scrollRocketToVisible(Point2D.Double pt) {
- Rectangle r = comp.getVisibleRect();
- Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
- int dx = (int)copt.x - r.width/2 - r.x;
- int dy = (int)copt.y - r.height/2 - r.y;
- if (Math.abs(dx) > r.width/4 || Math.abs(dy) > r.height/4) {
- r.x += dx;
- r.y += dy;
- comp.scrollRectToVisible(r);
- }
- }
-
- private void addTileAt(AltosSiteMapTile tile, Point offset) {
- if (Math.abs(offset.x) >= MAX_TILE_DELTA ||
- Math.abs(offset.y) >= MAX_TILE_DELTA)
- {
- System.out.printf("Rocket too far away from pad (tile %d,%d)\n",
- offset.x, offset.y);
- return;
- }
-
- boolean review = false;
- Rectangle r = comp.getVisibleRect();
- if (offset.x < topleft.x) {
- r.x += (topleft.x - offset.x) * px_size;
- topleft.x = offset.x;
- review = true;
- }
- if (offset.y < topleft.y) {
- r.y += (topleft.y - offset.y) * px_size;
- topleft.y = offset.y;
- review = true;
- }
- 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 + MAX_TILE_DELTA;
- c.gridy = offset.y + MAX_TILE_DELTA;
- layout.setConstraints(tile, c);
-
- comp.add(tile);
- if (review) {
- comp.scrollRectToVisible(r);
- }
- }
-
- private AltosSiteMap(boolean knowWhatYouAreDoing) {
- if (!knowWhatYouAreDoing) {
- throw new RuntimeException("Arggh.");
- }
- }
-
- JComponent comp = new JComponent() { };
- private GridBagLayout layout = new GridBagLayout();
-
- public AltosSiteMap() {
- GrabNDrag scroller = new GrabNDrag(comp);
-
- comp.setLayout(layout);
-
- for (int x = -1; x <= 1; x++) {
- for (int y = -1; y <= 1; y++) {
- Point offset = new Point(x, y);
- AltosSiteMapTile t = createTile(offset);
- addTileAt(t, offset);
- }
- }
- setViewportView(comp);
- setPreferredSize(new Dimension(500,200));
- }
-}
projects / fw / altos / blobdiff