/* 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();
}
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();
}