* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-package org.altusmetrum.altoslib_6;
+package org.altusmetrum.altoslib_10;
import java.io.*;
import java.lang.Math;
return new AltosLatLon(lat,lon);
}
+ public AltosLatLon lat_lon (AltosPointInt point) {
+ return lat_lon(new AltosPointDouble(point.x, point.y));
+ }
+
+ public AltosPointDouble screen_point(AltosPointInt screen) {
+ return new AltosPointDouble(screen.x + offset_x, screen.y + offset_y);
+ }
+
public AltosPointDouble screen_point(AltosPointDouble screen) {
return new AltosPointDouble(screen.x + offset_x, screen.y + offset_y);
}
+ public double hypot(AltosLatLon a, AltosLatLon b) {
+ AltosPointDouble a_pt = point(a);
+ AltosPointDouble b_pt = point(b);
+
+ return Math.hypot(a_pt.x - b_pt.x, a_pt.y - b_pt.y);
+ }
+
+ public AltosLatLon screen_lat_lon(AltosPointInt screen) {
+ return lat_lon(screen_point(screen));
+ }
+
public AltosLatLon screen_lat_lon(AltosPointDouble screen) {
return lat_lon(screen_point(screen));
}
(int) (point.y - offset_y + 0.5));
}
-// public Rectangle screen(AltosMapRectangle map_rect) {
-// AltosPoint2D ul = screen(map_rect.ul);
-// AltosPoint2D lr = screen(map_rect.lr);
-//
-// return new Rectangle((int) ul.x, (int) ul.y, (int) (lr.x - ul.x), (int) (lr.y - ul.y));
-// }
+ public AltosRectangle screen(AltosMapRectangle map_rect) {
+ AltosPointDouble ul = screen(map_rect.ul);
+ AltosPointDouble lr = screen(map_rect.lr);
+
+ return new AltosRectangle((int) ul.x, (int) ul.y, (int) (lr.x - ul.x), (int) (lr.y - ul.y));
+ }
public AltosPointDouble screen(AltosLatLon lat_lon) {
return screen(point(lat_lon));
offset_x = centre_pt.x - width / 2.0;
offset_y = centre_pt.y - height / 2.0;
}
+
+ public static double lon_from_distance(double lat, double distance) {
+ double c = AltosGreatCircle.earth_radius * Math.cos(lat * Math.PI / 180) * 2 * Math.PI;
+
+ if (c < 10)
+ return 0;
+ return distance/c * 360.0;
+ }
}