[Plib-devel] New VRML1.0 save routine for plib

[me a. <myo...@ya...>]

Steve,

I have written a VRML1.0 save routine for plib to
allow PPE to save output for my project. Testing was
performed with VrmlView (linux) and GlView (win95).
The save routine also supports textures and (per-face)
materials. The new src file (src/ssg/ssgSaveVRML1.cxx)
and the diff to integrate it into plib is attached.
Let me know if you are interested in including it in
plib or if you see any problems in it (you can post to
the plib or ppe developer mailing lists since I read
them).

I have a few questions:
1) I don't see any support for PER-VERTEX colors in
plib. Is this supported? If not, are there plans to
support it?

2) When saving textured models the textures always
appear reversed top-bottom when the VRML model is
loaded. Is this a known problem in plib? It looks like
this problem is also listed in the todo list in the
ssgLoadVRML1.cxx file. I've included an INVERSE_REPEAT
macro in the file to fix this, but have not enabled it
since it seems like a really bad hack...

3) The ssg routines use a 'short' for indices when
gathering all the indices for saving a model. If a
model is loaded with more than 32767 indices hilarity
results@! I got sick of this and modified plib-1.4.1
myself (NOT included in the attached diff). Has this
been fixed in the current plib CVS?

Warren Wilbur

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