From: Norman V. <nh...@ca...> - 2000-07-05 21:34:23
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>-----Original Message----- >From: ope...@li... > >Today's Topics: > > 1. 3D Up Vector (Frank Warmerdam) > 2. Re: 3D Up Vector (Steve Rawlinson) > 3. 3D Tile Exclusion Idea (Steve Rawlinson) Hello Frank et All, We have iteratively improved on the viewing model and the 3D tile clipper for the FlightGear project. We use the flight simulator coordinate system i.e y and z are swapped compared to normal OpenGL Z = UP Y goes into the screen Our code is GPL'd and I would be glad to answer any and all questions. The code is downloadable from http://www.flightgear.org but the pertinent stuff in the CVS just had a major overhaul. This is also available see instructions on above page. Cheers Norman |