How to pick object with mouse

  How can I pick my imported .obj's polygons (not the bounding box) with the mouse in order to change the texture. I would like to use a camera like in "Hello mouse pick" (in the Jm tutorials).  Any help appreciated


Well, I suggest you look at  "Hello mouse pick". If you want to change the texture, update the texture state, I guess.

What you want is triangle-accurate picking. See jmetest.intersection.TestTrianglePick.