Angus Dorbie (dorbie++at++sgi.com)
Fri, 03 Sep 1999 11:55:55 -0700
CHeers,ANgus.
Chris Elliott wrote:
>
> I fixed jitter problems with a simulator by keeping the eyepoint at the
> origin, but now I have screen clearing problems. The ground area does
> not clear. I am using pfEarthSky. Here are relevant pieces of code
> from the old and new. The old clears properly. Any ideas?
>
> NEW
> pfDCSTrans(terrainDCS, -ownship_x, -ownship_y, -ownship_z);
> pfChanView(channel, zero.xyz, ownship.hpr);
> pfDCSTrans(otherDCS, (float) (x - ownship_x), (float) (y - ownship_y),
> (float) (z - ownship_z));
> pfDCSRot(otherDCS, otherYaw, otherPitch, otherRoll);
> pfuCollideGGrnd(&zero, terrainDCS, zpr);
>
> OLD
> pfChanView(channel, ownship.xyz, ownship.hpr);
> pfDCSTrans(otherDCS, (float) (x), (float) (y), (float) (z));
> pfDCSRot(otherDCS, otherYaw, otherPitch, otherRoll);
> pfuCollideGGrnd(&ownship, terrain, zpr);
>
> It may be of interest that I have a channel traversal function set using
> pfChanTravFunc(channel, PFTRAV_DRAW, DrawFunc);
>
> void DrawFunc(pfChannel *chan, void *nothing) {
> pfClearChan(chan);
> pfDraw();
> if (theCallback != NULL) {
> theCallback();
> }
> }
>
> --
> Chris Elliott
> Chris.P.Elliott++at++lmco.com
>
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--
"One of the best-known folk theorems of software engineering is that
60% to 75% of conventional software projects are either never
completed or rejected by their intended users. If that range is
anywhere near true (and I've never met a manager of any experience
who disputes it) then more projects than not are being aimed at goals
which are either (a) not realistically attainable, or (b) just plain
wrong."
Eric S. Raymond - The Cathedral and The Bazaar
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This archive was generated by hypermail 2.0b2 on Fri Sep 03 1999 - 11:56:02 PDT