From: Ken Lindsay (kl++at++kohonen.arc.nasa.gov)
Date: 10/06/2000 11:04:20
I've been looking thru this topic lately and I agree with Sakns, I saw something
somewhere that mentioned letting a browser choose the LODs for you. I thought that
was weird but wasn't relevant to what I was doing. But I've only been reading DOCs
for Multigen/Creator and Performer Prog Manual (insight) and man pages and I would
bet such a statement is there some where, probably pasted in by accident by some
tech writer late one night, and never caught yet (til now).
ken
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From: Simon C Mills <simon++at++wgs.estec.esa.nl>
Date: Thu, 05 Oct 2000 10:18:17 +0200
Subject: Re: pfLODs
Sakns wrote:
>
> Hi there,
>
> One of the tips in the performer manuals says that for best
> results, specify ranges (pfLOD) only where necessary; give
> browsers as much freedom as possible to choose LODs based on
> performance and system stress.
> Can someone elaborate a little bit on this one.
>
> I set up a pfLOD node without ranges at all and none of the lods
> show up. Then I only set up the first and the last ranges, and the
> lod never switches to the high level. It always stays with the
> low.
It sounds like you may be confusing Performer with VRML, which you view
in a browser, where you can do this. Performer always requires the LOD
ranges to be specified to work properly. You can then optionally have
the system stress level modify these LOD ranges to maintain a more
constant frame rate.
> When I setup the correct ranges then it works as expected.
> I only have 3 objects under the LOD node.
Ths is what I would expect.
> So what does the tip mean?
AFAIK, this is only relevant to VRML scenes viewed in a browser.
Regards, Simon
_______________________________________________________________________
Simon Mills
Silicon Worlds S.A.
c/o Modelling & Simulation Section (TOS-EMM) Tel: +31 (0)71 565 3725
European Space Agency (ESA/ESTEC) Fax: +31 (0)71 565 5419
Postbus 299, 2200AG Noordwijk e-mail: simon++at++wgs.estec.esa.nl
The Netherlands http://www.estec.esa.nl/wmwww/EMM
_______________________________________________________________________
******************************************************************************
-==-
ken "fire a few neurons" lindsay kl++at++mars.arc.nasa.gov
NASA Ames Research Center QSS Group, Inc.
Bldg 269, Room 281 (650) 604 0461 (lab)
Mail Stop 269-1 (650) 604 3594 (fax)
Moffett Field, CA 94035-1000 (650) 604 3181 (vox)
When inlaws are outlawed, only outlaws will have inlaws
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