How to add dimensions in a papervision rendered model?

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evanwashere

How to add dimensions in a papervision rendered model?

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Dev version: http://www.transpacific.in/sarin/tps.html

On my live site: http://www.thenaturalsapphirecompany.com/Sapphires/Blue/B3223/Round/stoneid=B3223 (click "Interactive 3D model")

Please refer to the above examples we have rendered for a mesh file (in xml) format in flash through Papervision3D.  We are using polygonMesh3D class

The mesh file consist of vertices and polygon coordinates

Our requirement are that the user should be able to see the dimensions between any two points of vertexes by clicking on a particular points (or alternatively the model should be able to compute some fixed sets of dimensions like width height etc).  if you look at the JPG report of the same stone, you can see the measurements we want to show in Papervision3D: http://www.thenaturalsapphirecompany.com/images/Blue/SarinFiles/B3223/B3223_LOW_REP.jpg

How would we achieve this?  Is there any ready class available?

I am attaching a sample xml file which we are rendering