how to select the Object3DData in the scene?

[rikapsu2018]

@andresoviedo I have the same issue.
CollisionDetection.getBoxIntersection returns null always.

Originally posted by @rikapsu2018 in #48 (comment)

[andresoviedo]

comment from user
"The 3d model has several faces and I want to allow the users to select one of the faces by tapping it. But it always returns null.
Can you have a spare time for me to find the solution?"