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, int new_zoom) {
47 scale_x = 256/360.0 * Math.pow(2, zoom);
48 scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
49 coord_pt = pt(lat, lng, new Point2D.Double(0,0));
50 coord_pt.x = 320-coord_pt.x;
51 coord_pt.y = 320-coord_pt.y;
55 private static double limit(double v, double lo, double hi) {
64 // http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
65 // search for fromLatLngToPoint and fromPointToLatLng
66 private Point2D.Double pt(double lat, double lng) {
67 return pt(lat, lng, coord_pt);
70 private Point2D.Double pt(double lat, double lng, Point2D.Double centre) {
71 Point2D.Double res = new Point2D.Double();
74 res.x = centre.x + lng*scale_x;
75 e = limit(Math.sin(Math.toRadians(lat)),-(1-1.0E-15),1-1.0E-15);
76 res.y = centre.y + 0.5*Math.log((1+e)/(1-e))*-scale_y;
85 static Color stateColors[] = {
86 Color.WHITE, // startup
91 Color.YELLOW, // coast
97 public void show(AltosState state, int crc_errors) {
100 Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
101 if (last_pt != null && pt != last_pt) {
102 if (0 <= state.state && state.state < stateColors.length) {
103 g2d.setColor(stateColors[state.state]);
105 g2d.draw(new Line2D.Double(last_pt, pt));
111 public AltosSiteMap() {
112 GridBagLayout layout = new GridBagLayout();
115 GridBagConstraints c = new GridBagConstraints();
117 setLocation(-27.850, 152.960, 15);
118 String pngfile = "/home/aj/qrs-S27.850,W152.960-15.png";
120 c.gridx = 0; c.gridy = 0;
121 c.weightx = 1; c.weighty = 1;
122 c.anchor = GridBagConstraints.CENTER;
123 c.fill = GridBagConstraints.BOTH;
126 BufferedImage myPicture = ImageIO.read(new File(pngfile));
127 g2d = myPicture.createGraphics();
128 JLabel picLabel = new JLabel(new ImageIcon( myPicture ));
129 JScrollPane scrollPane = new JScrollPane(picLabel);
130 layout.setConstraints(scrollPane, c);
132 } catch (Exception e) {
133 throw new RuntimeException(e);