I am researching a way to select (or scan) the surface of an existing 3D model of a building and using selected data to create a new model. For this I am using Java, JS and Autodesk Forge API. What I am trying to achieve is a copy of a model that should contain only surface walls, roof and balcony. The original model would consist of full BIM model containing, for example, staircases, walls separating rooms, furniture and so on. I tried searching for methods to use for my research, but sadly failed, so my questions regarding this would be:
whether it is possible using Autodesk Forge API to create a copy of a model in a new file using selected elements as a base
if there are any approaches to select elements that can be seen from outside, but ain't inside.
I would appreciate any suggestions regarding this as I am wondering if forge actually has any methods regarding this and if any extra library should be applied in order to achieve my goal.