Esempi in C++ (Cpp) per EdgeStrip::num_line_strips

Esempio n. 1

File: paper_doll.cpp Progetto: QuLogic/jot-lib

bool 
PAPER_DOLL::init(CGESTUREptr& g)
{
   if (!(g && g->is_stroke()))
      return false;

   if (g->below_min_length() || g->below_min_spread())
      return false;

   if (!g->is_ellipse()) {
      err_adv(debug, "PAPER_DOLL::init: non-ellipse");
      return false;
   }
   Panel* p = dynamic_cast<Panel*>(
      Bsurface::get_surface(get_top_level(VisRefImage::get_faces(g->pts())))
      );
   err_adv(debug, "PAPER_DOLL::init: %s panel", p?"found":"could not find");
   if (!(p && p->is_selected())) {
      err_adv(debug, "PAPER_DOLL::init: ellipse not over selected panel");
      return false;
   }
   assert(p && p->bfaces().size() > 0);
   Bface_list faces = Bface_list::reachable_faces(p->bfaces().front());
   assert(!faces.empty());
   if (!faces.is_planar(deg2rad(1.0))) {
      err_adv(debug, "PAPER_DOLL::init: region is not planar");
      return false;
   }

   EdgeStrip boundary = faces.get_boundary();
   if (boundary.empty()) {
      err_adv(debug, "PAPER_DOLL::init: region has no boundary");
      return false;
   }

   Bsurface_list surfs = Bsurface::get_surfaces(faces);
   if (!are_all_bsurfaces<Panel>(surfs)) {
      err_adv(debug, "PAPER_DOLL::init: region not all panels");
      return 0;
   }

   err_adv(debug, "PAPER_DOLL::init: proceeding...");

   err_adv(debug, "  boundary edges: %d, components: %d, panels: %d",
           boundary.edges().size(), boundary.num_line_strips(), surfs.num()
      );

   if (get_instance()->build_primitive(faces)) {
      err_adv(debug, "  ... succeeded");
      return true;
   }
   err_adv(debug, "  ... failed");
   return false;
}

Esempio n. 2

File: paper_doll.cpp Progetto: QuLogic/jot-lib

inline Bedge_list
quad_cell_end_edges(PCell* cell)
{
   // if the cell is a quad (4 sides) and has one neigbhor,
   // return the side opposite from the neighbor.

   assert(cell && cell->num_corners() == 4);

   PCell_list nbrs = cell->nbrs();
   if (nbrs.size() != 1) {
      err_adv(debug, "quad_cell_end_edges: neighbors: %d != 1", nbrs.size());
      return Bedge_list();
   }
   // find an edge of the shared boundary.
   // do it now before messing with flags...
   assert(!cell->shared_boundary(nbrs[0]).empty());
   Bedge* e = cell->shared_boundary(nbrs[0]).front();
   assert(e);

   EdgeStrip boundary = cell->get_boundary();
   assert(boundary.num_line_strips() == 1);

   // iterate around the boundary, setting edge flags to value
   // k that is incremented whenever we pass a cell corner.
   int k = 0;
   PCellCornerVertFilter filter;
   for (int i=0; i<boundary.num(); i++) {
      if (filter.accept(boundary.vert(i)))
         k = (k + 1)%4;
      boundary.edge(i)->set_flag(k);
   }

   // we want the edges with flag == k + 2 mod 4
   return boundary.edges().filter(
      SimplexFlagFilter((e->flag() + 2)%4)
      );
}