altosdroid: Select tracker by clicking on map

[fw/altos] / altoslib / AltosMapTransform.java

diff --git a/altoslib/AltosMapTransform.java b/altoslib/AltosMapTransform.java
index 30994ecb60bc2dc826f50f6fffbc546b07882e24..11ed4eb9c238e887669fe38ad9d64d1814ea2091 100644 (file)
--- a/altoslib/AltosMapTransform.java
+++ b/altoslib/AltosMapTransform.java
@@ -51,6 +51,13 @@ public class AltosMapTransform {
                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));
        }