[info-performer] LOD's being badly formed in perfly.

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From: David Lannan (david.lannan++at++sydac.com.au)
Date: 09/22/2003 01:19:57

Hi,

I am having a small problem with previewing Openflight files with LOD's and
Switches in them in perfly.
Most of the time the scenes appear correct and the expected scene hierarchy
is created. But on a few files this is not the case and badly formed LOD
nodes are created. I have tried -q 0 for disabling optimisations on perfly
but this doesnt seems to help.

My current assumption is that the flt loader is having problems with these
file, or is there a likelihood that Performer has trouble loader such
hierarchies.

Here is are examples of the resulting hierachy in perfly.

Good:
                Scene Node
                 |
          Root Group node
                 |
            Switch Node
                 |
             LOD Node
            / | \
     Geode 1 Geode 2 Geode 3

Bad:
                Scene Node
                 |
          Root Group node
                 |
            Switch Node
                 | \
             LOD Node LOD Node
            / | |
     Geode 1 Geode 2 Geode 3

The extra LOD node causes all sorts of wierd results.

I have confirmed that the hiereachy in all the models are correct in
Creator.
So I am a little puzzled why they should be handled differently? I am I
correct in that it could be a loder problem?

Any help would be greatly appreciated.

David Lannan
Sofwtare Engineer
Sydac Pty Ltd

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