[info-performer] Terrain Polygon testing

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From: Allan Schaffer (allan++at++sgi.com)
Date: 10/22/2004 16:57:16

Performers,
Some problems this week with the spam filters caused legitimate messages to
be trapped (both for info-performer & for subscribe/unsubscribe requests).
Many apologies for the problems, I think they're fixed. I'll forward the
trapped messages on the senders' behalf --allan

-------- Original Message --------
Date: Thu, 21 Oct 2004 13:24:29 -0700
From: Anthony Migliore <anthony.t.migliore++at++boeing.com>

> I have a terrain data base with 3D buildings generated by Terrex's Terra
> Vista tool. When I view the .flt files with MultiGen Creator each of
> the 'ground' polygons have the "terrain flag" set and the buildings do
> not. I have a isect test routine for terrain height; however, I am
> getting the buildings height in the return for that routine. I would
> like to exclude the building from the terrain isect test routine based
> on the fact they do not have the "terrain flag" set.
>
> My question is how does the MultiGen loader (v15.4g) bring the "terrain
> flag" into performer, so I can exclude any polygons that don't have this
> flag set. Has anyone had a similar problem, and determined a solution?
>
> -- Mig

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