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.
21 import java.awt.image.*;
22 import java.awt.event.*;
24 import javax.imageio.ImageIO;
25 import javax.swing.table.*;
29 import java.util.prefs.*;
30 import java.lang.Math;
31 import java.awt.geom.Point2D;
32 import java.awt.geom.Line2D;
34 public class AltosSiteMap extends JComponent implements AltosFlightDisplay {
37 double scale_x, scale_y;
38 Point2D.Double coord_pt;
39 Point2D.Double last_pt;
43 private void setLocation(double new_lat, double new_lng) {
48 scale_x = 256/360.0 * Math.pow(2, zoom);
49 scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
50 coord_pt = pt(lat, lng, new Point2D.Double(0,0));
51 coord_pt.x = 320-coord_pt.x;
52 coord_pt.y = 320-coord_pt.y;
56 File pngfile = new File(AltosPreferences.logdir(),
57 FileCoord(lat, lng, zoom));
58 System.out.printf("Trying file %s\n", pngfile);
59 BufferedImage myPicture = ImageIO.read(pngfile);
60 picLabel.setIcon(new ImageIcon( myPicture ));
61 g2d = myPicture.createGraphics();
62 } catch (Exception e) {
63 throw new RuntimeException(e);
67 private static double limit(double v, double lo, double hi) {
75 private static String FileCoord(double lat, double lng, int zoom) {
76 char chlat = lat < 0 ? 'S' : 'N';
77 char chlng = lng < 0 ? 'E' : 'W';
78 if (lat < 0) lat = -lat;
79 if (lng < 0) lng = -lng;
80 return String.format("map-%c%.3f,%c%.3f-%d.png",
81 chlat, lat, chlng, lng, zoom);
86 // http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
87 // search for fromLatLngToPoint and fromPointToLatLng
88 private Point2D.Double pt(double lat, double lng) {
89 return pt(lat, lng, coord_pt);
92 private Point2D.Double pt(double lat, double lng, Point2D.Double centre) {
93 Point2D.Double res = new Point2D.Double();
96 res.x = centre.x + lng*scale_x;
97 e = limit(Math.sin(Math.toRadians(lat)),-(1-1.0E-15),1-1.0E-15);
98 res.y = centre.y + 0.5*Math.log((1+e)/(1-e))*-scale_y;
103 public void reset() {
107 static Color stateColors[] = {
108 Color.WHITE, // startup
113 Color.YELLOW, // coast
114 Color.CYAN, // drogue
116 Color.BLACK // landed
119 public void show(AltosState state, int crc_errors) {
120 if (!state.gps_ready && state.pad_lat == 0 && state.pad_lon == 0)
122 double plat = (int)(state.pad_lat*200)/200.0;
123 double plon = (int)(state.pad_lon*200)/200.0;
125 if (last_pt == null) {
126 setLocation(plat, plon);
129 Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
130 if (last_pt != null && pt != last_pt) {
131 if (0 <= state.state && state.state < stateColors.length) {
132 g2d.setColor(stateColors[state.state]);
134 g2d.draw(new Line2D.Double(last_pt, pt));
140 JLabel picLabel = new JLabel();
142 public AltosSiteMap() {
143 GridBagLayout layout = new GridBagLayout();
146 GridBagConstraints c = new GridBagConstraints();
148 c.gridx = 0; c.gridy = 0;
149 c.weightx = 1; c.weighty = 1;
150 c.anchor = GridBagConstraints.CENTER;
151 c.fill = GridBagConstraints.BOTH;
152 picLabel = new JLabel();
153 JScrollPane scrollPane = new JScrollPane(picLabel);
154 layout.setConstraints(scrollPane, c);