How to define the boundaries of an element to match the element itself

Questions
1

Hi, how to define the boundaries of an element to match the element itself? I understand how to create boundaries in the form of a box, but I do not know how to make the boundaries touch element(as in the photo). And in general, is it possible to implement?

Thanks for help!

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2

These boundaries are defined already for every model - it’s the geometry of said model :sweat_smile:

If instead of “define” you meant more “how to draw / display” - this may be of some help :relieved:

3

I just want to check if there is a certain element in this object (which is on the picture). And I did it with the help of containsBox().