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/*
* 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.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 JComponent implements AltosFlightDisplay {
double lat, lng;
int zoom;
double scale_x, scale_y;
Point2D.Double coord_pt;
Point2D.Double last_pt;
Graphics2D g2d;
private boolean setLocation(double new_lat, double new_lng) {
int new_zoom = 15;
lat = new_lat;
lng = new_lng;
zoom = new_zoom;
scale_x = 256/360.0 * Math.pow(2, zoom);
scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
coord_pt = pt(lat, lng, new Point2D.Double(0,0));
coord_pt.x = 320-coord_pt.x;
coord_pt.y = 320-coord_pt.y;
last_pt = null;
try {
File pngfile = new File(AltosPreferences.logdir(),
FileCoord(lat, lng, zoom));
System.out.printf("Trying file %s\n", pngfile);
BufferedImage myPicture = ImageIO.read(pngfile);
picLabel.setIcon(new ImageIcon( myPicture ));
g2d = myPicture.createGraphics();
} catch (Exception e) {
// throw new RuntimeException(e);
return false;
}
return true;
}
private static double limit(double v, double lo, double hi) {
if (v < lo)
return lo;
if (hi < v)
return hi;
return v;
}
private static String FileCoord(double lat, double lng, int zoom) {
char chlat = lat < 0 ? 'S' : 'N';
char chlng = lng < 0 ? 'E' : 'W';
if (lat < 0) lat = -lat;
if (lng < 0) lng = -lng;
return String.format("map-%c%.3f,%c%.3f-%d.png",
chlat, lat, chlng, lng, zoom);
}
// based on google js
// http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
// search for fromLatLngToPoint and fromPointToLatLng
private Point2D.Double pt(double lat, double lng) {
return pt(lat, lng, coord_pt);
}
private Point2D.Double pt(double lat, double lng, Point2D.Double centre) {
Point2D.Double res = new Point2D.Double();
double e;
res.x = centre.x + lng*scale_x;
e = limit(Math.sin(Math.toRadians(lat)),-(1-1.0E-15),1-1.0E-15);
res.y = centre.y + 0.5*Math.log((1+e)/(1-e))*-scale_y;
return res;
}
public void reset() {
// ?
}
static Color stateColors[] = {
Color.WHITE, // startup
Color.WHITE, // idle
Color.WHITE, // pad
Color.RED, // boost
Color.PINK, // fast
Color.YELLOW, // coast
Color.CYAN, // drogue
Color.BLUE, // main
Color.BLACK // landed
};
boolean nomaps = false;
public void show(AltosState state, int crc_errors) {
if (nomaps)
return;
if (!state.gps_ready && state.pad_lat == 0 && state.pad_lon == 0)
return;
double plat = (int)(state.pad_lat*200)/200.0;
double plon = (int)(state.pad_lon*200)/200.0;
if (last_pt == null) {
if (!setLocation(plat, plon)) {
nomaps = true;
return;
}
}
Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
if (last_pt != null && pt != last_pt) {
if (0 <= state.state && state.state < stateColors.length) {
g2d.setColor(stateColors[state.state]);
}
g2d.draw(new Line2D.Double(last_pt, pt));
}
last_pt = pt;
repaint();
}
JLabel picLabel = new JLabel();
public AltosSiteMap() {
GridBagLayout layout = new GridBagLayout();
setLayout(layout);
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0; c.gridy = 0;
c.weightx = 1; c.weighty = 1;
c.anchor = GridBagConstraints.CENTER;
c.fill = GridBagConstraints.BOTH;
picLabel = new JLabel();
JScrollPane scrollPane = new JScrollPane(picLabel);
layout.setConstraints(scrollPane, c);
add(scrollPane);
}
}
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