Billboards

Martin Roth (roth++at++ifi.unizh.ch)
Fri, 6 Jan 1995 09:53:10 +0100

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in the Performer reference page about pfBillboards it says that:

   "After the first pfSync, the number of pfGeoSets, the number and length of
    the primitives, and planarity of the vertices should not be changed."

Does that mean it *mustn't* be changed? In my application I'd like to
dynamically add and remove geosets to my billboard as I add and remove
geometrie nodes to the scene. This is typically done after the first pfSync
call. Is that possible?

Do I have to remove the billboard from the scene before adding or removing
geosets and then add it again? In fact I tried it both ways and it didn't work
either way. The only way I got it to run was to have billboards added to the
scene for every geoset. It was pretty slow...

Thanks for all suggestions

Martin

_______________________________________________________________________________
 /| /|) S. H. Martin Roth
/ |/ |\OTH Student in Computer Science

ETHZ, Swiss Federal Institute of Technology Zuerich email: sroth++at++iiic.ethz.ch
UniZh, University of Zuerich email: roth++at++ifi.unizh.ch

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