From: Marco O Lanzagorta (lnzgrt++at++cmf.nrl.navy.mil)
Date: 03/12/2002 14:59:07
Hello,
I am trying to intersect (for selection) a pfBillBoard, however I am
unable to do it. I checked the bounding spheres of the pfBillBoard and
also the ones for the individual pfGeoSets, and althought they seem
correct, the intersection is empty. I read in the man pages about a bug
that:
"Intersection traversals test only the pfBillboard's bounding volume, not
its individual pfGeoSets."
But it seems Performer is also failing to calculate the intersection with
the pfSphere that serves as bounding volume of the billboard. Am I doing
something wrong?
Preparing for the worst case scenario, I created some invisible
pfdNewSphere around the billboards and it works fine, but I want
to keep the geometry to a minimum, as I am expecting to have hundreds
of these billboards flying around at the time.
Any ideas?
Thanks,
Marco
===========================================================================
Dr. Marco Lanzagorta email: lnzgrt++at++volt.nrl.navy.mil
Code 5594 phone: (202) 767-8427
Center for Computational Science fax : (202) 404-7402
Naval Research Laboratory
4555 Overlook Ave, S.W.
Washington, DC 20375 http://ohm.nrl.navy.mil/staff/lnzgrt
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