Re: Intersection testing

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From: Angus Dorbie (dorbie++at++sgi.com)
Date: 02/14/2001 12:06:47

Looks like I was wrong the hit array is for multiple segments (as you
suggest).

Looks like you'd need to use callback to get access to all the segments.

Cheers,ANgus.

Boris Mansencal wrote:
>
> Angus Dorbie wrote:
> >
> > Boris Mansencal wrote:
> > >
> > > Hi,
> > >
> > > I would like to get all the geometries intersected by a segment.
> > > It is not possible with pfNode::isect(pfSegSet *segSet, pfHit **hits[],
> > > isn't it ?
> > >
> >
> > It is possible.
> >
> > > So, why do we need to give a pfHit **[] and not only a pfHit *[] if we
> > > get only
> > > one intersection point by segment ?
> >
> > Because it's possible :-)
> >
>
> So, as isect returns n the number of intersections, I will have n pfHit*
> from hits[0], right ?
> Is it still working with several segments ? How do I know the number of
> intersections for a given segment ?
>
> Thanks again.
>
> Boris.
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