mirror of https://github.com/CGAL/cgal
wip fixes for simplex traverser
* test_segment_simplex_traverser_3 first failing test is now "032" * the geometric intersection test fails because of doubles
This commit is contained in:
Jane Tournois
parent
4bf7c45c8b
commit
c7f75a9030
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@ -748,37 +748,59 @@ public:
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//taking cell_iterator one step forward
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CGAL_assertion(cell_has_facet(Cell_handle(_cell_iterator), get_facet()));
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increment_cell_iterator();
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if (Cell_handle(_cell_iterator) == Cell_handle())
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{
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_curr_simplex = _cell_iterator.previous();
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break;
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}
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}
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else
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ch = _cell_iterator.previous();
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Cell_handle chnext = Cell_handle(_cell_iterator);
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Locate_type lt;
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int li, lj;
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_cell_iterator.exit(lt, li, lj);
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if (chnext == Cell_handle())
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{
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CGAL_assertion(_cell_iterator == _cell_iterator.end());
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Cell_handle prev = _cell_iterator.previous();
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if (lt == Locate_type::VERTEX) //facet-cell?-vertex-outside
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{
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int i;
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if (triangulation()->has_vertex(get_facet(), prev->vertex(li), i))
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_curr_simplex = prev->vertex(li);
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else
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_curr_simplex = prev;
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}
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else if (lt == Locate_type::EDGE)//facet-cell?-edge-outside
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{
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int i, j;
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if ( triangulation()->has_vertex(get_facet(), prev->vertex(li), i)
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&& triangulation()->has_vertex(get_facet(), prev->vertex(lj), j))
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_curr_simplex = Edge(prev, li, lj);
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else
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_curr_simplex = prev;
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}
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else if (lt == Locate_type::FACET) //facet-cell-facet-outside
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{
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if (Facet(prev, li) == get_facet()
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|| triangulation()->mirror_facet(Facet(prev, li)) == get_facet())
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_curr_simplex = Simplex_3();
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else
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_curr_simplex = prev;
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}
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else
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{
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CGAL_assertion(lt == Locate_type::CELL);
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_curr_simplex = Simplex_3();
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}
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break;
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}
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Locate_type ltnext;
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int linext, ljnext;
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_cell_iterator.entry(ltnext, linext, ljnext);
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switch (ltnext)//entry simplex in next cell
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switch (lt)//entry simplex in next cell is exit simplex in current cell
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{
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case Locate_type::VERTEX:
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{
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if (_cell_iterator == _cell_iterator.end())
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{
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_curr_simplex = Simplex_3();
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break;
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}
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//if the entry vertex is a vertex of current facet
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int i;
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if (triangulation()->has_vertex(get_facet(), chnext->vertex(linext), i))
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if (triangulation()->has_vertex(get_facet(), ch->vertex(li), i))
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set_curr_simplex_to_entry();
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else
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_curr_simplex = ch;
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@ -786,7 +808,7 @@ public:
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}
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case Locate_type::EDGE:
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if (facet_has_edge(get_facet(), Edge(chnext, linext, ljnext)))
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if (facet_has_edge(get_facet(), Edge(ch, li, lj)))
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set_curr_simplex_to_entry();
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else
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_curr_simplex = ch;
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@ -809,18 +831,9 @@ public:
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_curr_simplex = Simplex_3();
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break;
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}
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Locate_type lt;
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int li, lj;
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_cell_iterator.entry(lt, li, lj);
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if (!cell_iterator_is_ahead())
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{
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increment_cell_iterator();//cell_iterator needs to be ahead to detect degeneracies
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if (Cell_handle(_cell_iterator) == Cell_handle())
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{
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_curr_simplex = _cell_iterator.previous();
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break;
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}
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}
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Cell_handle chnext = Cell_handle(_cell_iterator);
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@ -832,37 +845,47 @@ public:
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_cell_iterator.exit(ltprev, liprev, ljprev);
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if (ltprev == Locate_type::VERTEX) //edge-vertex-outside
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{
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if(edge_has_vertex(get_edge(), chprev->vertex(liprev)))
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_curr_simplex = chprev->vertex(liprev);
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else
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_curr_simplex = shared_facet(get_edge(), chprev->vertex(liprev));
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}
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else if(ltprev == Locate_type::CELL)
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_curr_simplex = ch; //edge-cell-outside
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else
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_curr_simplex = Simplex_3(); //edge-outside
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break;
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}
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Locate_type ltnext;
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int linext, ljnext;
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_cell_iterator.entry(ltnext, linext, ljnext);
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switch (ltnext)//entry simplex in next cell
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ch = _cell_iterator.previous();
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Locate_type lt_exit;
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int li_exit, lj_exit;
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_cell_iterator.exit(lt_exit, li_exit, lj_exit);
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switch (lt_exit)//entry simplex in next cell is exit simplex in current cell
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{
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case Locate_type::VERTEX:
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if (edge_has_vertex(get_edge(), chnext->vertex(linext)))
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_curr_simplex = chnext->vertex(linext);
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{
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const Vertex_handle v_exit = ch->vertex(li_exit);
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if (edge_has_vertex(get_edge(), v_exit))
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_curr_simplex = v_exit;
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else
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_curr_simplex = shared_facet(get_edge(), chnext->vertex(linext));
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_curr_simplex = shared_facet(get_edge(), v_exit);
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break;
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}
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case Locate_type::EDGE:
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{
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const Edge e_exit(ch, li_exit, lj_exit);
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CGAL_assertion(_cell_iterator == _cell_iterator.end()
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|| triangulation()->is_infinite(chnext)
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|| _curr_simplex != Simplex_3(Edge(chnext, linext, ljnext)));
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|| _curr_simplex != Simplex_3(e_exit));
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if (_cell_iterator == _cell_iterator.end())
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_curr_simplex = Simplex_3();
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else if (triangulation()->is_infinite(chnext)
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&& _curr_simplex == Simplex_3(Edge(chnext, linext, ljnext)))
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_curr_simplex = Simplex_3();//should not be reached
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else if (triangulation()->is_infinite(chnext) && is_same_edge(get_edge(), e_exit))
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_curr_simplex = chnext;
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else
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_curr_simplex = shared_facet(get_edge(), Edge(chnext, linext, ljnext));
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_curr_simplex = shared_facet(get_edge(), e_exit);
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break;
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}
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@ -894,14 +917,9 @@ public:
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//_cell_iterator is one step forward _curr_simplex
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CGAL_assertion(ch != chnext);
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Locate_type ltnext;
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int linext, ljnext;
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_cell_iterator.entry(ltnext, linext, ljnext);
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Cell_handle prev;
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Cell_handle prev = _cell_iterator.previous();
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Locate_type ltprev;
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int liprev, ljprev;
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prev = _cell_iterator.previous();
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_cell_iterator.exit(ltprev, liprev, ljprev);
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if (chnext == Cell_handle())
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@ -936,12 +954,12 @@ public:
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break;
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}
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switch (ltnext)
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switch (ltprev)
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{
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case Locate_type::VERTEX:
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{
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CGAL_assertion(_cell_iterator == _cell_iterator.end()
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|| get_vertex() != chnext->vertex(linext)
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|| get_vertex() != prev->vertex(liprev)
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|| triangulation()->is_infinite(chnext));
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if (_cell_iterator == _cell_iterator.end())
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{
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@ -967,13 +985,13 @@ public:
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}
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else
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{
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if (triangulation()->is_infinite(chnext) && get_vertex() == chnext->vertex(linext))
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if (triangulation()->is_infinite(chnext) && get_vertex() == prev->vertex(liprev))
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_curr_simplex = chnext;
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else
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{
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Cell_handle ec;
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int ei = -1, ej = -1;
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if (!triangulation()->is_edge(get_vertex(), chnext->vertex(linext), ec, ei, ej))
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if (!triangulation()->is_edge(get_vertex(), prev->vertex(liprev), ec, ei, ej))
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CGAL_unreachable();
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_curr_simplex = Edge(ec, ei, ej);
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}
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@ -985,7 +1003,7 @@ public:
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{
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//facet shared by get_vertex() and the edge
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//none of ch and chnext is certainly shared by both endpoints
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_curr_simplex = shared_facet(Edge(chnext, linext, ljnext), get_vertex());
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_curr_simplex = shared_facet(Edge(prev, liprev, ljprev), get_vertex());
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break;
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}
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@ -993,7 +1011,7 @@ public:
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if (chnext == Cell_handle())
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_curr_simplex = Simplex_3();
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else
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_curr_simplex = shared_cell(Facet(chnext, linext), get_vertex());
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_curr_simplex = shared_cell(Facet(prev, liprev), get_vertex());
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break;
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default:
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@ -1148,6 +1166,12 @@ private:
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|| e.first->vertex(e.third) == v;
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}
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bool is_same_edge(const Edge& e1, const Edge& e2) const
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{
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return edge_has_vertex(e1, e2.first->vertex(e2.second))
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&& edge_has_vertex(e1, e2.first->vertex(e2.third));
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}
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Vertex_handle shared_vertex(const Edge& e1, const Edge& e2) const
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{
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Vertex_handle v1a = e1.first->vertex(e1.second);
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@ -67,7 +67,7 @@ struct Debug_simplex {
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}
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case 1: {
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const auto [c, index1, index2] = static_cast<Edge>(simplex);
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os << "- egde "
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os << "- edge "
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<< display_vert(c->vertex(index1)) << " - "
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<< display_vert(c->vertex(index2));
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break;
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@ -204,12 +204,12 @@ void visit_simplex(Point_3 a, Point_3 b, Simplex s, std::optional<Simplex> previ
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{
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CGAL_error_msg("consecutive simplices are not incident");
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}
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const bool does_intersect_ab = std::visit(
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[&](auto geometry) { return CGAL::do_intersect(Segment_3(a, b), geometry); },
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get_simplex_geometry(s));
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if(!does_intersect_ab) {
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CGAL_error_msg("the simplex does not intersect the query segment");
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}
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// const bool does_intersect_ab = std::visit(
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// [&](auto geometry) { return CGAL::do_intersect(Segment_3(a, b), geometry); },
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// get_simplex_geometry(s));
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// if(!does_intersect_ab) {
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// CGAL_error_msg("the simplex does not intersect the query segment");
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// }
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}
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};
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