Posted by Pixelapp on
URL: https://forum.jogamp.org/Find-position-in-3D-model-from-position-on-2D-screen-tp4025324p4025325.html

I would recommend using the JOGL technique called Picking. Even tough is a bit slow, I think it would suit your application.

Here is a tutorial: http://fivedots.coe.psu.ac.th/~ad/jg2/, http://fivedots.coe.psu.ac.th/~ad/jg2/ch17/index.html.