\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - 3D Boolean Operations on Nef Polyhedra

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Nef_3/offIO.cpp
#include <CGAL/Exact_integer.h>
#include <CGAL/Homogeneous.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/IO/Polyhedron_iostream.h>
#include <CGAL/Nef_polyhedron_3.h>
#include <CGAL/IO/Nef_polyhedron_iostream_3.h>
#include <iostream>
typedef CGAL::Exact_integer NT;
typedef CGAL::Homogeneous<NT> Kernel;
typedef CGAL::Polyhedron_3<Kernel> Polyhedron;
typedef CGAL::Nef_polyhedron_3<Kernel> Nef_polyhedron;
typedef Kernel::Vector_3 Vector_3;
typedef Kernel::Aff_transformation_3 Aff_transformation_3;
int main() {
Polyhedron P;
std::cin >> P;
Nef_polyhedron N1(P);
Nef_polyhedron N2(N1);
Aff_transformation_3 aff(CGAL::TRANSLATION, Vector_3(2,2,0,1));
N2.transform(aff);
N1 += N2;
if(N1.is_simple()) {
N1.convert_to_polyhedron(P);
std::cout << P;
}
else {
std::cout << N1;
}
}