Add test if GeodeticPatch contains a Geodetic2

modules/globebrowsing/geometry/geodetic2.cpp

@@ -181,7 +181,12 @@ namespace openspace {
         return _center.lon + _halfSize.lon;
     }
 
-     
+    
+    bool GeodeticPatch::contains(const Geodetic2& p) const {
+        Geodetic2 diff = _center - p;
+        return glm::abs(diff.lat) <= _halfSize.lat && glm::abs(diff.lon) <= _halfSize.lon;
+    }
+
 
     Scalar GeodeticPatch::edgeLatitudeNearestEquator() const {
         return _center.lat + _halfSize.lat * (isNorthern() ? -1 : 1);

modules/globebrowsing/geometry/geodetic2.h

@@ -127,6 +127,11 @@ public:
     Scalar minLon() const;
     Scalar maxLon() const;
 
+    /**
+     * returns true if the specified coordinate is contained within the patch
+     */
+    bool contains(const Geodetic2& p) const;
+
 
     /**
      * Clamps a point to the patch region