Is there any realistic chance someone is going to use tasks this large? Because if there is, then I need to fix calculations of task distance (now it uses euclidean distance in XYZ, it would probably be better to use great circle distance) K > I found an easy way how to draw lines on the earth surface. > It can be done with osgEarth::Symbology::MeshSubdivider, which > subdivides (any?) geometry according to ellipsoid surface. It's very > easy to use - just call one method on your geometry and specify > wheter you want to interpolate according to great circle or not. ...I > send screenshot (in attachment) of declaration of 25000km FAI > triangle :-) > > T.