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package dongfang.mkt.ui.offscreendisplay;
/*
* u/l: geotagged geo:lat=47.327450 geo:lon=8.521657
* l/r: geotagged geo:lat=47.321749 geo:lon=8.534403
* house: geotagged geo:lat=47.324614 geo:lon=8.528202
*/
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import javax.swing.JFrame;
import javax.swing.JPanel;
import dongfang.mkt.datatype.GPSPosition;
public class MapImageView
extends JPanel {
private Image mapImage
;
private Image copterImage
;
private static final int MAPWIDTH =
600;
private static final int MAPHEIGHT =
400;
// It is assumed the map is north/south oriented!
private GPSPosition upperLeft
;
private GPSPosition lowerRight
;
private GPSPosition hightlightPosition
;
public MapImageView
(GPSPosition upperLeft, GPSPosition lowerRight,
String imageFileName
) {
setSize
(MAPWIDTH, MAPHEIGHT
);
this.
upperLeft = upperLeft
;
this.
lowerRight = lowerRight
;
mapImage =
Toolkit.
getDefaultToolkit().
getImage(imageFileName
);
}
private double relativeX
(GPSPosition pos
) {
double lon = pos.
getLongitude();
// The sign should be OK here (positive) both east and west.
double span = lowerRight.
getLongitude() - upperLeft.
getLongitude();
double offset = lon - upperLeft.
getLongitude();
return offset / span
;
}
private double relativeY
(GPSPosition pos
) {
double lat = pos.
getLatitude();
// The sign should be OK here (positive) both east and west.
double span = lowerRight.
getLatitude() - upperLeft.
getLatitude();
double offset = lat - upperLeft.
getLatitude();
return offset / span
;
}
public void paintComponent
(Graphics g
) {
// Draw our Image object.
g.
drawImage(mapImage,
0,
0, MAPWIDTH, MAPHEIGHT,
this); // at location
g.
setColor(Color.
red);
int x =
(int)(MAPWIDTH
* relativeX
(hightlightPosition
) +
0.5);
int y =
(int)(MAPHEIGHT
* relativeY
(hightlightPosition
) +
0.5);
g.
drawArc(x, y,
20,
20,
0,
360);
}
public static void main
(String[] args
) {
GPSPosition upperLeft =
new GPSPosition
();
GPSPosition lowerRight =
new GPSPosition
();
GPSPosition highlight =
new GPSPosition
();
upperLeft.
setLatitude(47.327450);
upperLeft.
setLongitude(8.521657);
// * l/r: geotagged geo:lat=47.321749 geo:lon=8.534403
lowerRight.
setLatitude(47.321749);
lowerRight.
setLongitude(8.534403);
// geotagged geo:lat=47.324614 geo:lon=8.528202
highlight.
setLatitude(47.324714);
highlight.
setLongitude(8.528102);
MapImageView v =
new MapImageView
(upperLeft, lowerRight,
"flugplatz_small.png");
v.
hightlightPosition = highlight
;
JFrame f =
new JFrame();
f.
getContentPane().
add(v
);
f.
setSize(v.
getSize());
f.
setVisible(true);
}
}