Danie Heath writes: > Hi again ... > > The Binary Space Partitioning I mean is : > > What is the method you guys follow to subdivide the scenery, objects, > aircraft so that you only render what you see ... Wouldn't the rendering > be more efficient with a system like this ...
We use a scheme where we divide up the surface of the earth into tiles. We then render the m x n grid of tiles nearest to the viewer that fully cover the radius of visibility. (m and n are always odd numbers for what it's worth.) Here is some basic information on the coordinate systems we use: http://www.flightgear.org/Docs/Scenery/CoordinateSystem/CoordinateSystem.html Here is some further information on how we split up the world. I see that some of the information on file formats is dated, and there is a better tutorial now for the actual scenery building process, but section 2 will hopefully provide the details you are asking for: http://www.flightgear.org/Docs/Scenery/SceneryGeneration/SceneryGeneration.html Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
