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altos/lisp: Share mark function for mark and move
[fw/altos]
/
altoslib
/
AltosMapTransform.java
diff --git
a/altoslib/AltosMapTransform.java
b/altoslib/AltosMapTransform.java
index 11ed4eb9c238e887669fe38ad9d64d1814ea2091..266557b60b94ad96aaa43fe67529ac6f2b4a40e5 100644
(file)
--- a/
altoslib/AltosMapTransform.java
+++ b/
altoslib/AltosMapTransform.java
@@
-3,7
+3,8
@@
*
* 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
*
* 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.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
@@
-15,7
+16,7
@@
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-package org.altusmetrum.altoslib_
7
;
+package org.altusmetrum.altoslib_
11
;
import java.io.*;
import java.lang.Math;
import java.io.*;
import java.lang.Math;
@@
-117,4
+118,12
@@
public class AltosMapTransform {
offset_x = centre_pt.x - width / 2.0;
offset_y = centre_pt.y - height / 2.0;
}
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;
+ }
}
}