I made a model that can be dragged and rotated with mouse. And then I add some tag to the model. So whenever the model rotate, the tag rotate with it. I wonder how we can detect if a tag is rotated behind model. The tag is invisible from the camera view, because it is blocked by other object. Is there a function I can use or is there a common way to check that?
I am new to unity3d. Thanks for helping me out.