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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 AltosSiteMapTile extends JLayeredPane {
int zoom;
double scale_x, scale_y;
Point2D.Double coord_pt;
Point2D.Double last_pt;
AltosSiteMapLabel mapLabel;
JLabel draw;
Graphics2D g2d;
int off_x;
int off_y;
static final int px_size = 512;
private void loadMap() {
Point2D.Double map_latlng = latlng(px_size/2, px_size/2);
mapLabel.loadMap(map_latlng.x, map_latlng.y, zoom, px_size);
}
private boolean setLocation(double lat, double lng) {
Point2D.Double north_step;
double step_nm = 0.5;
for (zoom = 3; zoom < 22; zoom++) {
coord_pt = pt(lat, lng, new Point2D.Double(0,0), zoom);
north_step = pt(lat+step_nm/60.0, lng,
new Point2D.Double(0,0), zoom);
if (coord_pt.y - north_step.y > px_size/2)
break;
}
coord_pt.x = -px_size * Math.floor(coord_pt.x/px_size + off_x);
coord_pt.y = -px_size * Math.floor(coord_pt.y/px_size + off_y);
scale_x = 256/360.0 * Math.pow(2, zoom);
scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
last_pt = null;
return true;
}
private static double limit(double v, double lo, double hi) {
if (v < lo)
return lo;
if (hi < v)
return hi;
return v;
}
// 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, scale_x, scale_y);
}
private static Point2D.Double pt(double lat, double lng,
Point2D.Double centre, 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(lat, lng, centre, scale_x, scale_y);
}
private static Point2D.Double pt(double lat, double lng,
Point2D.Double centre, double scale_x, double scale_y)
{
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;
}
private Point2D.Double latlng(double x, double y) {
return latlng(new Point2D.Double(x,y), coord_pt);
}
private Point2D.Double latlng(Point2D.Double pt) {
return latlng(pt, coord_pt);
}
private Point2D.Double latlng(Point2D.Double pt, Point2D.Double centre) {
double lat, lng;
double rads;
lng = (pt.x - centre.x)/scale_x;
rads = 2 * Math.atan(Math.exp((pt.y-centre.y)/-scale_y));
lat = Math.toDegrees(rads - Math.PI/2);
return new Point2D.Double(lat,lng);
}
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 drawn_landed_circle = false;
public void show(AltosState state, int crc_errors) {
if (!state.gps_ready) {
if (state.pad_lat == 0 && state.pad_lon == 0)
return;
if (state.ngps < 3)
return;
}
if (last_pt == null) {
setLocation(state.pad_lat, state.pad_lon);
loadMap();
last_pt = pt(state.pad_lat, state.pad_lon);
}
Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
if (pt != last_pt) {
if (0 <= state.state && state.state < stateColors.length) {
g2d.setColor(stateColors[state.state]);
}
g2d.draw(new Line2D.Double(last_pt, pt));
}
if (0 <= pt.x && pt.x < px_size) {
if (0 <= pt.y && pt.y < px_size) {
int dx = 500, dy = 250;
if (state.state > 2) {
dx = Math.min(200, 20 + (int) Math.abs(last_pt.x - pt.x));
dy = Math.min(100, 10 + (int) Math.abs(last_pt.y - pt.y));
}
Rectangle r = new Rectangle((int)pt.x-dx, (int)pt.y-dy,
dx*2, dy*2);
scrollRectToVisible(r);
}
}
if (state.state == 8 && !drawn_landed_circle) {
drawn_landed_circle = true;
g2d.setColor(Color.RED);
g2d.drawOval((int)pt.x-5, (int)pt.y-5, 10, 10);
g2d.drawOval((int)pt.x-20, (int)pt.y-20, 40, 40);
g2d.drawOval((int)pt.x-35, (int)pt.y-35, 70, 70);
}
last_pt = pt;
repaint();
}
public static Graphics2D fillLabel(JLabel l, Color c) {
BufferedImage img = new BufferedImage(px_size, px_size,
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = img.createGraphics();
g.setColor(c);
g.fillRect(0, 0, px_size, px_size);
l.setIcon(new ImageIcon(img));
return g;
}
public AltosSiteMapTile(int x_tile_offset, int y_tile_offset) {
setPreferredSize(new Dimension(px_size, px_size));
mapLabel = new AltosSiteMapLabel();
fillLabel(mapLabel, Color.GRAY);
mapLabel.setOpaque(true);
mapLabel.setBounds(0, 0, px_size, px_size);
add(mapLabel, new Integer(0));
draw = new JLabel();
g2d = fillLabel(draw, new Color(127, 127, 127, 0));
draw.setBounds(0, 0, px_size, px_size);
draw.setOpaque(false);
add(draw, new Integer(1));
off_x = x_tile_offset;
off_y = y_tile_offset;
}
}
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