Moved random ground cover object management code (userdata.[ch]xx) over

[flightgear.git] / src / ATC / ATCutils.hxx

diff --git a/src/ATC/ATCutils.hxx b/src/ATC/ATCutils.hxx
index b487390472f8619b7cb62d223128ee9f70b5ff6b..420b6163251cdfb73331eee86ccdaa80a446073f 100644 (file)
--- a/src/ATC/ATCutils.hxx
+++ b/src/ATC/ATCutils.hxx
@@ -77,6 +77,10 @@ double GetHeadingFromTo(Point3D A, Point3D B);
 // Given a heading (in degrees), bound it from 0 -> 360
 void dclBoundHeading(double &hdg);
 
+// smallest difference between two angles in degrees
+// difference is negative if a1 > a2 and positive if a2 > a1
+double GetAngleDiff_deg( const double &a1, const double &a2);
+
 
 /*******************************
 *