+void GroundRadar::addRunwayVertices(const FGRunway* aRunway, double aTowerLat, double aTowerLon, double aScale, osg::Vec3Array* aVertices)
+{
+ double az1, az2, dist_m;
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, aRunway->latitude(), aRunway->longitude(), &az1, &az2, &dist_m);
+
+ osg::Vec3 center = fromPolar(az1, dist_m * aScale) + osg::Vec3(256, 256, 0);
+ osg::Vec3 leftcenter = fromPolar(aRunway->headingDeg(), aRunway->lengthM() * aScale / 2) + center;
+ osg::Vec3 lefttop = fromPolar(aRunway->headingDeg() - 90, aRunway->widthM() * aScale / 2) + leftcenter;
+ osg::Vec3 leftbottom = leftcenter * 2 - lefttop;
+ osg::Vec3 rightbottom = center * 2 - lefttop;
+ osg::Vec3 righttop = center * 2 - leftbottom;
+
+ aVertices->push_back(lefttop);
+ aVertices->push_back(leftbottom);
+ aVertices->push_back(rightbottom);
+ aVertices->push_back(righttop);
+}
+