Curt Olson writes: >In driving simulation we have the 3d model of the world, but we also >have something called a 'logical road network.' You don't see the >logical road network visually, but it allows the autonomous traffic to >have reasonable behavior and it allows the system to do things like >calculate your distance from the lane center.
>Perhaps for ATC and AI aircraft on the ground it would make sense to >create a logical taxiway network (and perhaps a logical airway network >too.) Yes, that's basically what I'm planning to do. I keep forgetting you're a driving sim guy and probably have some very relevant expertise here. What co-ordinate systems are you using? At airport level lat/lon spherical co-ordinates are really overkill for whats basically a planar problem. I was considering assuming that for a limited area (a few miles each way) one could assume that lines of lat and lon were straight and parallel, and possibly map the lat/lon to x/y depending on latitude to get the x and y axis subdivisions equal. This would be a lot cheaper that doing proper spherical -> planar projection. The logical network would be defined in terms of these x,y and the airplanes lat/lon quickly and cheaply converted. Comments? Cheers - Dave _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
