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[SHYAM SUNDAR KANNAN <>]

Hello Everyone,

I am trying to find the symmetric difference of two polyhedrons. In order to perform this Boolean operation in 3D I want to convert my Polyderon_3 to Nef_Polyhedron_3.

I constructed my polyhedron with data from an .OFF file. Later when I try to convert the Polyhedron_3 to Nef_Polyhedron_3 as

std::ifstream stream(path/data.off");
    if(!stream) {
        std::cerr << "Cannot open the reconstructed.off file!\n";
        return 1;
    }
    Polyhedron R;
    stream >> R;
    if(!stream) {
        std::cerr << "reconstructed.off is not a polyhedron\n";
        return 1;
    }
   
    Nef_polyhedron N(R);  //getting error in this line

(I am using Extended_homogeneous Kernel)

the conversion fails in most of the cases. It works for simple 3D objects like cube etc.

For example:

It works for a cube with rectangular hole but fails for a cube with a cylindrical hole.

Can anyone explain the reason for this. Are there any constraints causing this limitation.

Is there way to convert all Polyhedrons to Nef_Polyherdon?

Thanking You in advance,

Regards,

Shyam Sundar Kannan.