mirror of https://github.com/CGAL/cgal
changed insert and remove for inserting of coplanar points.
This commit is contained in:
Claudia Werner
parent
5ca9ea9448
commit
f5e2d0e59d
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@ -101,7 +101,6 @@ public:
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bool is_valid_vertex(Vertex_handle fh) const;
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void show_face(Face_handle fh) const;
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void show_all() const;
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bool test_conflict(const Point &p, Face_handle fh) const;
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@ -148,23 +147,21 @@ public:
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Vertex_handle reinsert(Vertex_handle v, Face_handle start);
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Vertex_handle insert_outside_affine_hull_regular(const Point& p,bool plane=false);
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Vertex_handle insert_hole_approach_2(const Point &p, Locate_type lt, Face_handle loc, int li) ;
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Vertex_handle insert_in_plane_triangulation(const Point &p);
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//REMOVAL
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void remove_degree_3(Vertex_handle v, Face_handle f = Face_handle());
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void remove(Vertex_handle v);
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void remove_2D(Vertex_handle v);
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void remove_2D(Vertex_handle v);
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bool test_dim_down(Vertex_handle v);
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bool test_dim_up(Point p);
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void fill_hole_regular(std::list<Edge> & hole);
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//HIDDING
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// void exchange_incidences(Vertex_handle va, Vertex_handle vb);
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void set_face(Vertex_list& vl, const Face_handle& fh);
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void set_face(Vertex_list& vl, const Face_handle& fh);
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//REGULAR
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void regularize(Vertex_handle v);
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@ -197,6 +194,7 @@ template < class InputIterator >
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return number_of_vertices() - n;
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}
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template <class Stream>
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Stream &write_vertices(Stream &out,std::vector<Vertex_handle> &t)
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{
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@ -336,9 +334,11 @@ get_conflicts_and_boundary(const Point &p,
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OutputItBoundaryEdges eit,
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Face_handle start ) const {
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CGAL_triangulation_precondition( this->dimension() == 2);
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Face_handle fh = start;
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Face_handle fh = start;
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CGAL_triangulation_precondition(test_conflict(p,fh));
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Face_handle tmp;
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CGAL_triangulation_precondition(test_conflict(p,fh));
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*fit++ = fh; //put fh in OutputItFaces
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fh->set_in_conflict_flag(1);
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@ -429,16 +429,16 @@ Regular_triangulation_on_sphere_2<Gt,Tds>::
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case 1:
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if (number_of_vertices() > 3 ) {
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Vertices_iterator it1 = vertices_begin(),
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it2(it1), it3(it1);
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it2(it1), it3(it1), it4(it1);
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++it2;
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++it3; ++it3;
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while( it3 != vertices_end()) {
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Orientation s = orientation(it1->point(),
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it2->point(),
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it3->point());
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result = result && s == COLLINEAR ;
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++it4; ++it4; ++it4;
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while( it4 != vertices_end()) {
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Orientation s = Base ::power_test( it1->point(),it2->point(),it3->point(), it4->point());
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result = result && s == ON_ORIENTED_BOUNDARY ;
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CGAL_triangulation_assertion(result);
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++it1 ; ++it2; ++it3;
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++it1 ; ++it2; ++it3;++it4;
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}
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}
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break;
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@ -603,6 +603,52 @@ insert(const Point &p, Face_handle start)
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}
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template < class Gt, class Tds>
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typename Regular_triangulation_on_sphere_2<Gt,Tds>::Vertex_handle
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Regular_triangulation_on_sphere_2<Gt, Tds>::
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insert_in_plane_triangulation(const Point &p){
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CGAL_triangulation_precondition(dimension()==1);
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Face_handle loc;
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Edges_iterator eit=edges_begin();
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do{
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Face_handle f=eit->first;
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Vertex_handle v1 = f->vertex(0);
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Vertex_handle v2 = f -> vertex(1);
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if(orientation(v1->point(), v2->point(), p)==RIGHT_TURN){
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loc = f;
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break;
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}
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eit++;
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}while( eit!=edges_end());
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Vertex_handle v0 = loc->vertex(0);
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Vertex_handle v1 = loc->vertex(1);
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Vertex_handle v=this->_tds.create_vertex();
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v->set_point(p);
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Face_handle f1 = this->_tds.create_face(v0, v, Vertex_handle());
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Face_handle f2 = this->_tds.create_face(v, v1, Vertex_handle());
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v->set_face(f1);
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v0->set_face(f1);
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v1->set_face(f2);
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this->_tds.set_adjacency(f1,0,f2,1);
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this->_tds.set_adjacency(f1,1,loc->neighbor(1),0);
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this->_tds.set_adjacency(f2,0,loc->neighbor(0),1);
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delete_face(loc);
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return v;
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}
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@ -624,15 +670,20 @@ Regular_triangulation_on_sphere_2<Gt,Tds>::
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if(dimension() == 1){
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if(test_dim_up(p)){
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Face_handle f=edges_begin()->first;
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Vertex_handle v1=f->vertex(0);
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Vertex_handle v2=f->vertex(1);
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Vertex_handle v3=f->neighbor(0)->vertex(1);
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Orientation orient=orientation(v1->point(),v2->point(),v3->point()) ;
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bool test = orient ==COLLINEAR;
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v = insert_outside_affine_hull_regular(p,orient==COLLINEAR);
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return v;
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}
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else {
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v= insert_in_plane_triangulation(p);
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return v;
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}
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}
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if (dimension()==2){
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@ -656,6 +707,7 @@ Regular_triangulation_on_sphere_2<Gt,Tds>::
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update_negative_faces(v);
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return v;
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}
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}
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@ -665,9 +717,6 @@ Regular_triangulation_on_sphere_2<Gt,Tds>::
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template < class Gt, class Tds >
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bool
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Regular_triangulation_on_sphere_2<Gt,Tds>::
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@ -733,11 +782,15 @@ Regular_triangulation_on_sphere_2<Gt,Tds>::
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remove(Vertex_handle v )
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{
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CGAL_triangulation_precondition( v != Vertex_handle() );
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if(number_of_vertices()<=3)
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if(number_of_vertices()<=3){
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this->_tds.remove_dim_down(v);
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else {
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}
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else if(dimension()==2) {
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remove_2D (v);
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}
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else {
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remove_1D(v);
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}
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}
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@ -747,11 +800,11 @@ void
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Regular_triangulation_on_sphere_2<Gt,Tds>::
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remove_2D(Vertex_handle v)
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{
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CGAL_triangulation_precondition(dimension()==2);
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if (test_dim_down(v)) {
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this->_tds.remove_dim_down(v);
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std::cout<<"dim in remove_down"<<dimension()<<std::endl;
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update_negative_faces();
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update_negative_faces();
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}
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else {
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std::list<Edge> hole;
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@ -773,7 +826,8 @@ test_dim_down(Vertex_handle v)
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// 1) There is only 4 vertices
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//and/or
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// 2) every vertices appart from v are coplanar with _sphere
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CGAL_triangulation_precondition(dimension() == 2);
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//!!!!!!!NOT necessarily with _sphere
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//CGAL_triangulation_precondition(dimension() == 2);
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bool dim1 = true;
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if(number_of_vertices()==4){
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@ -784,18 +838,35 @@ test_dim_down(Vertex_handle v)
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Face_circulator done(fc);
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do{
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int i=fc->index(v);
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Face_handle f=fc->neighbor(i);
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if(orientation(f->vertex(0)->point(),
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f->vertex(1)->point(),
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f->vertex(2)->point())
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if(orientation(fc->vertex(0)->point(),
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fc->vertex(1)->point(),
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fc->vertex(2)->point())
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!=COLLINEAR)
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dim1=false;
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}while(++fc!=done && dim1);
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return dim1;
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}
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template <class Gt, class Tds >
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bool
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Regular_triangulation_on_sphere_2<Gt,Tds>::
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test_dim_up(Point p){
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// dimension of triangulation increase from 1 to 2 iff the new vertex in not coplanar with the old vertices
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//first three points of triangulation
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Face_handle f=edges_begin()->first;
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Vertex_handle v1=f->vertex(0);
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Vertex_handle v2=f->vertex(1);
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Vertex_handle v3=f->neighbor(0)->vertex(1);
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return (Base::power_test(v1->point(), v2->point(), v3->point(),p)!=ON_ORIENTED_BOUNDARY);
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}
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template < class Gt, class Tds >
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void
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Regular_triangulation_on_sphere_2<Gt,Tds>::
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@ -2166,12 +2166,9 @@ test_dim_down(Vertex_handle v)
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//it goes down to 1 iff
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// 1) There is only 4 vertices
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//and/or
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// 2) every vertices appart from v are coplanar with _sphere
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CGAL_triangulation_precondition(dimension() == 2);
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bool dim1 = true;
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if(number_of_vertices()==4)
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return dim1;
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// 2) every vertices appart from v are coplanar
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bool dim1=true;
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Face_circulator fc=incident_faces(v,v->face());
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Face_circulator done(fc);
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@ -36,46 +36,106 @@ typedef RTOS::Vertex_handle Vertex_handle;
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int main(int argc, char* argv[])
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{
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double radius = 100;
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double radius2 = radius*radius;
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typedef K::Point_3 Point_3;
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//DTOS_exact dtos;
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RTOS rtos;
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// insert and remove 5 coplanar points. Points are also coplanar with the center of the sphere
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/*Point_3 p1=Point_3(radius/sqrt(2), radius/sqrt(2), 0);
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Point_3 p2 = Point_3(-1*radius/sqrt(2), radius/sqrt(2), 0);
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Point_3 p3 = Point_3(-1*radius/sqrt(2), -1*radius/sqrt(2), 0);
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Point_3 p4 = Point_3(radius/sqrt(2), -1*radius/sqrt(2), 0);
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Point_3 p5 = Point_3(radius,0,0);
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Point_3 p1=Point_3(1/sqrt(2), 1/sqrt(2), 0);
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Point_3 p2 = Point_3(-1/sqrt(2), 1/sqrt(2), 0);
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Point_3 p3 = Point_3(-1/sqrt(2), -1/sqrt(2), 0);
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Point_3 p4 = Point_3(1/sqrt(2), -1/sqrt(2), 0);
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Point_3 p5 = Point_3(1,0,0);
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Vertex_handle v1 = rtos.insert(p1);
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Vertex_handle v2 = rtos.insert(p2);
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Vertex_handle v3 = rtos.insert(p3);
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Vertex_handle v4 = rtos.insert(p4);
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Vertex_handle v1 = rtos.insert(p1);
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Vertex_handle v2 = rtos.insert(p2);
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Vertex_handle v3 = rtos.insert(p3);
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Vertex_handle v4 = rtos.insert(p4);
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Vertex_handle v5 = rtos.insert(p5);
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rtos.is_valid();
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Vertex_handle v5 = rtos.insert(p5);
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rtos.show_all();
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std::cout<<"dimension" << rtos.dimension()<<std::endl;
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rtos.remove(v1);
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std::cout<<"dimension" << rtos.dimension()<<std::endl;
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rtos.is_valid();
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rtos.remove(v2);
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std::cout<<"dimension" << rtos.dimension()<<std::endl;
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rtos.is_valid();
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rtos.remove(v3);
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std::cout<<"dimension" << rtos.dimension()<<std::endl;
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rtos.is_valid();
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rtos.remove(v4);
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std::cout<<"dimension" << rtos.dimension()<<std::endl;
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rtos.is_valid();
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rtos.remove(v5);*/
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//insert coplanar Points. Points are coplanar but not coplanar with the center of the sphere
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rtos.clear();
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Point_3 p0 = Point_3(0,0,radius);
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Point_3 p21 = Point_3(1/sqrt(2),1/sqrt(2),sqrt(radius2-1));
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Point_3 p22 = Point_3(-1/sqrt(2), -1/sqrt(2), sqrt(radius2-1));
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Point_3 p23 = Point_3(0,1,sqrt(radius2-1));
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Point_3 p24 = Point_3(1,0,sqrt(radius2-1));
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Point_3 p25 = Point_3(-1/sqrt(2), 1/sqrt(2), sqrt(radius2-1));
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Point_3 p26 = Point_3(1/sqrt(2), -1/sqrt(2), sqrt(radius2-1));
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//Vertex_handle v0 = rtos.insert(p0);
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Vertex_handle v21 = rtos.insert(p21);
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Vertex_handle v22 = rtos.insert(p22);
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Vertex_handle v23 = rtos.insert(p23);
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rtos.show_vertex(v23);
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Vertex_handle v24 = rtos.insert(p24);
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rtos.show_vertex(v24);
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rtos.is_valid();
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Vertex_handle v25 = rtos.insert(p25);
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rtos.is_valid();
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rtos.show_all();
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Vertex_handle v26 = rtos.insert(p26);
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rtos.is_valid();
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//rtos.remove(v5);
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std::cout<<"dimension" << rtos.dimension()<<std::endl;
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//insert 5th point not coplanar
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Point_3 p27 = Point_3(0,0,radius);
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Vertex_handle v27 = rtos.insert(p27);
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rtos.show_all();
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rtos.is_valid();
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rtos.remove(v21);
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rtos.is_valid();
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rtos.show_all();
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rtos.remove(v22);
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rtos.is_valid();
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rtos.show_all();
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rtos.remove(v23);
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rtos.is_valid();
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rtos.show_all();
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//3 edges and faces left
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rtos.show_vertex(v24);
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rtos.remove(v24);
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rtos.is_valid();
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rtos.show_all();
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rtos.remove(v25);
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rtos.is_valid();
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rtos.show_all();
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rtos.remove(v26);
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rtos.is_valid();
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rtos.show_all();
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}
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