I'm trying to figure out the surface area of a mesh that is the result of various CSG union operations between an arbitrary number of other meshes by summing up the same property of each one of it's faces (triangles, in this case) but the result is far greater than expected. I believe that this is happening because the mesh that results from the CSG union operations have internal faces, but I'm trying to find only the surface area of it's exterior.
Is there any technique to remove the inner faces of a triangulated mesh, or maybe some way to just ignore these ones while calculating it's surface area?
Currently I'm using Net3dBool to perform the CSG operations. The code that performs the intersection is on the file BooleanModeller.cs, on the
getIntersection method, wich calls the