I just commited a turbulence model that I wrote over the vacation. It seems to work pretty well, but I'd be curious to see what other people think. Tuning it is more subjective than I had expected.
Basically, this is a a Perlin noise based scale-invariant vector field that gets added to the local wind velocity at each YASim Surface object. Because this kind of function is slow, especially in 4 dimensions (time, too) it's implemented as a 2D* lookup table that gets computed at initialization time. You'll notice a 3-4 second delay at startup to compute it. I could also store it as a file in the base package, if this is too slow. * I add X and Z, and Y and T to get the lookup dimensions. Since these are global axes, they aren't likely to align with the aircraft motion in any special way to produce artifacts. Anyway, try it out with different turbulence settings (you'll find them in preferences.xml) and let me know what seems wrong. Andy _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
