Re: pfSegsIsectNode

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Jim Helman (jimh++at++surreal)
Wed, 25 May 94 23:48:38 -0700

There is a bug in the libpfutil code for emulating the old
1.0/1.1 intersection API (pfuSegsIsectNode). The result
is that end clipping is not enabled unless you specify a
discriminator callback which does so. The fix is to add
such a discriminator callback or change line 153 of
libpfutil/isect.c:

        old: retVal = PFTRAV_CONT;
        new: retVal = PFTRAV_CONT|PFTRAV_IS_CLIP_END;

However, that's not an issue here since you are using
pfSegsIsectNode directly (as all new code should be).
Perhaps you are looking at the request (i.e. the pfSegSet)
rather than at the data returned in the pfHit. The pfSeg
returned in the pfHit structure is is clipped, but the
pfSegSet itself is read-only so the request can be static
and reused.

rgds,

-jim helman

jimh++at++surreal.asd.sgi.com
415/390-1151

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