Melchior FRANZ wrote: > * Stewart Andreason -- Saturday 10 March 2007: > >> When I added shadows to the 3 craft I have, I found it nicer to >> have the shadow shrink as altitude increases. >> > > Err ... but they don't in real life. They just *look* smaller > when they are farther away, just like in FlightGear already. > (Theoretically, they should even get bigger, but you'd need > to be at a very high altitude -- let's say a few million km. :-) > > Hmm, technically, either one of you guys can be right, depending on which shadow you look at. :-)
http://en.wikipedia.org/wiki/Penumbra Since the sun is not a point light source, the dark core of the shadow, the umbra will get smaller, but the half illuminated edge, the penumbra will get larger. Cheers, Durk ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
