Exemple #1
0
/* Test method
 The goal is to show the qt widget with the polyhedron. 
 TODO: Move it out of this class once stable.
 */
void show(Nef_polyhedron_3 N){

  char *args[]={"Nef_Polyhedron_3 Viewer"};
  int argc=1;
  
  QApplication a(argc, args); 
  CGAL::Qt_widget_Nef_3<Nef_polyhedron_3>* w =
    new CGAL::Qt_widget_Nef_3<Nef_polyhedron_3>(N);
  a.setMainWidget(w);
  w->show();
  
  a.exec();
}
Exemple #2
0
int main(int argc, char* argv[]) {
    // We've put the typedefs here as VC7 gives us an ICE if they are global typedefs
    typedef Nef_polyhedron::SNC_structure SNC_structure;
    typedef CGAL::visual_hull_creator<SNC_structure> VHC;

    if(argc!=2) {
        std::cerr << "Usage: visual_hull file" << std::endl;
        std::cerr << "For more information read the README file" << std::endl;
        return 1;
    }

    std::ifstream in(argv[1]);

    NaryInt ni;

    CGAL::Timer t;

    Point_3 room_min = read_point(in);
    Point_3 room_max = read_point(in);

    int ncameras;
    in >> ncameras;
    for(int cam=0; cam<ncameras; ++cam) {

        Point_3 camera(read_point(in));

        int npolygons;
        in >> npolygons;

        std::list<std::list<Point_3> > polygon_list;
        for(int poly=0; poly<npolygons; ++poly) {

            int npoints;
            in >> npoints;

            std::list<Point_3> input_points;
            for(int pnt=0; pnt<npoints; ++pnt)
                input_points.push_back(read_point(in));
            polygon_list.push_back(input_points);
        }

        std::list<std::list<Point_3> >::iterator li;
        for(li=polygon_list.begin(); li!=polygon_list.end(); ++li) {
            std::list<Point_3>::iterator pi(li->begin()), pimin(pi), pi_next,pi_prev;
            for(; pi!=li->end(); ++pi) {
                if(CGAL::lexicographically_xyz_smaller(*pi,*pimin))
                    pimin=pi;
            }
            pi_next=pi_prev=pimin;
            ++pi_next;
            if(pi_next==li->end()) pi_next=li->begin();
            if(pi_prev==li->begin()) pi_prev=li->end();
            --pi_prev;
            if(CGAL::orientation(*pi_prev,*pimin,*pi_next,camera)
                    == CGAL::POSITIVE)
                li->reverse();
        }

        t.start();
        Nef_polyhedron N;
        VHC vhc(room_min, room_max, camera, polygon_list);
        N.delegate(vhc,true);
        CGAL_assertion(N.is_valid());
        t.stop();
        std::cerr << "create view " << t.time() << std::endl;
        t.reset();
        ni.add_polyhedron(N);
    }

    Nef_polyhedron result = ni.get_intersection();

    QApplication a(argc,argv);
    CGAL::Qt_widget_Nef_3<Nef_polyhedron>* w =
        new CGAL::Qt_widget_Nef_3<Nef_polyhedron>(result);
    a.setMainWidget(w);
    w->show();
    a.exec();
}