Hi,
For a project I am working on, I planned to build a web-based modelling
client using Java3D. I wanted to have two seperate models on the client,
one model for visualisation only, and one model for selection of parts of
the model. The selection-model would be an invisible model, mapped over
the visualisation model. The following problem has come up with this
approach. Since Java3D approximates everything with polygons, it cannot be
made sure that for example a visible cylinder is positioned exactly the
same as its selection cylinder. The visualisation model could for example
be rotated just a couple of degrees with regard to the selection model, so
the polygons wouldn't overlap any more.
Now my question is: is it in any way possible to perform some kind of
ray-testing on a true primitive, instead of an approximated (triangulised)
version of it?
Eelco van den Berg.
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