Creating U3D or PRC files myself

Hi, I am interested to hear of any (preferably open source) software libraries, useable on Linux / MacOS, that can be used to create U3D or PRC files.
Basically our content creation flow is as follows:
* Scientist writes S2PLOT (http://astronomy.swin.edu.au/s2plot) program.
* Scientist runs program and saves geometry as VRML
* Scientist runs Acrobat 3D and imports VRML as PRC
* Scientist inserts 3-d figure in paper
We would like to modify this to look more like:
* Scientist writes S2PLOT program.
* Scientist runs program and saves geometry as U3D or PRC
* Scientist runs pdflatex, using movie15.sty to insert the U3D (or PRC) model as a figure in their paper
The latter flow is much preferred as the scientists don't need:
* Acrobat 3D software (at sometimes considerable cost)
* A MS Windows machine
and the journal publishers can be provided with a self-contained journal article that can be processed by LaTeX / pdflatex. Additionally, the scientists can modify their text, and re-run LaTeX and not have to go back in to manually insert the 3-d figures etc.
I would love to hear from anyone who knows of software tools that can help us realise the second, preferred data flow for our 3-d models in science.
[email protected]
Thanks - David Barnes.

For an illustration of my problem, here is a most simple file that I created:
http://www.cad6.com/archive/Merge1.u3d
This file opens correctly in SAP Visual Enterprise Viewer 7.0, but not in Acrobat XI Pro. A similiar file destilled from a sample file found on the web, however, works:
http://www.cad6.com/archive/Merge2.u3d
The only difference I can see is that is uses compression and a CLOD Progressive Mesh Continuation instead of a CLOD Base Mesh Continuation. But according to the latest version of "U3D Supported Elements", this should not make any difference.
Any idea why Merge1.u3d does not open? Please?!
Best regards
Stefan Malz

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From: Adobe Forums <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
Date: Thu, 3 Nov 2011 06:58:07 -0700
To: Leonard Rosenthol <[email protected]<mailto:[email protected]>>
Subject: How do I create an interactive PDF file with variable data
Re: How do I create an interactive PDF file with variable data
created by Ti26E31DSxxx<http://forums.adobe.com/people/Ti26E31DSxxx> in PDF Language and Specifications - View the full discussion<http://forums.adobe.com/message/4005459#4005459

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From: Adobe Forums <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
Date: Thu, 3 Nov 2011 06:58:07 -0700
To: Leonard Rosenthol <[email protected]<mailto:[email protected]>>
Subject: How do I create an interactive PDF file with variable data
Re: How do I create an interactive PDF file with variable data
created by Ti26E31DSxxx<http://forums.adobe.com/people/Ti26E31DSxxx> in PDF Language and Specifications - View the full discussion<http://forums.adobe.com/message/4005459#4005459

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