when the player clicks on the object the object is plane very thin like in 6nmBj.jpg file
then when the player clicks on it u can do:
transform.localScale += Vector3(0,0,0.1);
increase the scale of the object slowly through the z axis which will make it 3D
but of course this does the entire object 3d if u want the player choose specific points vertices then this is a lot of coding
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