On Saturday 14 February 2004 13:07, Vivian Meazza wrote: > Lee Elliott wrote > > > On Friday 13 February 2004 06:16, Jon Berndt wrote: > > > > True, but... This is a chunk of calculations running > > > > every frame. > > > > > > In the olden days, the cost would be too high. > > > > > > These days, it's not even a spec on a flea on the butt of > > > > an elephant > > > > > in terms of the overall FDM calculations - which in turn > > > > are not much > > > > > of a spec on a flea in the overall FlightGear calculations. > > > > > > > Our Aerodynamic modelers always seemed to know where the empty > > > > weight CG was every frame without additional calculations. > > > > > > That's not the issue, though. We FDM guys know absolutely where > > > everything is at all times within the FDMs. > > > > Yep:) Everything's right where we put it:) > > > > LeeE > > I'm about halfway through generating a 3d cockpit for the Seahawk model - > are you going to move the origin of the model? I'd like a heads up, it will > probably affect how I go about the rest of the work. > > Regards > > Vivian
That's great news. The only change that's likely to the Sea Hawk model will be to shift the origin to the nose;) This won't actually be too much of a problem and will only require simple offsets to the numbers in the anim and fdm files: Say I need to move the model 3 metres back and 0.1 metre up, then all we need to do is add 3 metres to all the 'x' measurements, and 0.1 to all the 'z' measurements in the fdm and anim files to line everything up again. (Heh!... or it might be _subtract_ 3 metres... maths was never my strong point) LeeE _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
