mirror of https://github.com/CGAL/cgal
50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
#include <CGAL/Exact_integer.h>
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#include <CGAL/Homogeneous.h>
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#include <CGAL/Nef_polyhedron_3.h>
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#include <CGAL/IO/Nef_polyhedron_iostream_3.h>
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typedef CGAL::Homogeneous<CGAL::Exact_integer> Kernel;
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typedef CGAL::Nef_polyhedron_3<Kernel> Nef_polyhedron_3;
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int main() {
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// We've put the typedefs here as VC7 gives us an ICE if they are global typedefs
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typedef Nef_polyhedron_3::Vertex_const_iterator Vertex_const_iterator;
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typedef Nef_polyhedron_3::Nef_polyhedron_S2 Nef_polyhedron_S2;
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typedef Nef_polyhedron_S2::SVertex_const_handle SVertex_const_handle;
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typedef Nef_polyhedron_S2::SHalfedge_const_handle SHalfedge_const_handle;
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typedef Nef_polyhedron_S2::SHalfloop_const_handle SHalfloop_const_handle;
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typedef Nef_polyhedron_S2::SFace_const_iterator SFace_const_iterator;
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typedef Nef_polyhedron_S2::SFace_cycle_const_iterator
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SFace_cycle_const_iterator;
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Nef_polyhedron_3 N;
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std::cin >> N;
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Vertex_const_iterator v = N.vertices_begin();
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Nef_polyhedron_S2 S(N.get_sphere_map(v));
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int i=0;
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SFace_const_iterator sf;
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for(sf = S.sfaces_begin(); sf != S.sfaces_end(); sf++) {
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SFace_cycle_const_iterator it;
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std::cout << "the sface cycles of sface " << i++ << " start with an\n";
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for(it = sf->sface_cycles_begin(); it != sf->sface_cycles_end(); it++) {
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if (it.is_svertex())
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std::cout << " svertex at position "
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<< SVertex_const_handle(it)->point() << std::endl;
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else if (it.is_shalfedge())
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std::cout << " shalfedge from "
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<< SHalfedge_const_handle(it)->source()->point() << " to "
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<< SHalfedge_const_handle(it)->target()->point() << std::endl;
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else if (it.is_shalfloop())
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std::cout << " shalfloop lying in the plane "
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<< SHalfloop_const_handle(it)->circle() << std::endl;
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// other cases can not occur.
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}
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}
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return 0;
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}
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