Christian Mayer writes:
> "Curtis L. Olson" wrote: > > > > Here's a question I'll throw out to the list on my way to bed. > > > > I'm working on VASI/PAPI type lights tonight and am running into a > > problem. I'm using environment mapping with the normal aligned along > > the desired approach path. This almost works as expected except for > > one major problem. The texture coordinate that is generated is > > ***highly*** dependent on the object's position on the screen. > > > > Thus, on approach, simply pitching up or down radically changes the > > color of the vasi light, even though the relative view position > > changes very little. > > Something to take cara about with environment mapping is the orientation > of the normal vector. If you've got it wron (i.e. pointing away from you > not towards you) you'll see the singularity - and thus quite possibly > rapid changes. I haven't played much with enviroment mapping yet but I was wondering if there needed to be a transform on top of each light that in essence moved the lookat vector to point directly at each light instead of being aligned with the normal FGFS lookat vector. Norman _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
