Function assert_faces_are_valid

tools/Wires/Misc/BoundaryRemesher.cpp:56–60

    }

    void assert_faces_are_valid(const MatrixIr& faces) {
        assert((faces.col(0).array() != faces.col(1).array()).all());
        assert((faces.col(1).array() != faces.col(2).array()).all());
        assert((faces.col(2).array() != faces.col(1).array()).all());
    }

    void save_mesh(const std::string& filename,
            const MatrixFr& vertices, const MatrixIr& faces) {