template<class V , class IV >

void vtkfig::Delaunay2D	(	const V &	points_in,
		V &	points,
		IV &	cells
	)

inline

Examples:: examples/example-simplexcontour2d.cxx, and examples/example-simplexquiver2d.cxx.

Definition at line 49 of file vtkfigTools.h.

   {
     assert(points.size()==0);
     assert(cells.size()==0);
     
     auto inpoints =vtkSmartPointer<vtkPoints>::New();
     
     for (int i=0; i<points_in.size(); i+=2)
       inpoints->InsertNextPoint(points_in[i], points_in[i+1],0);
     
     
     auto aPolyData=   vtkSmartPointer<vtkPolyData>::New();
     aPolyData->SetPoints(inpoints);
     
     
     auto delaunay = vtkSmartPointer<vtkDelaunay2D>::New();
     delaunay->SetInputData(aPolyData);
     
     auto dgrid=delaunay->GetOutput();
     delaunay->Update();
     
     auto npoints=dgrid->GetNumberOfPoints();
     auto ncells=dgrid->GetNumberOfPolys();
     
     auto  vtkpoints=dgrid->GetPoints();
     for (int i=0;i<npoints;i++)
     {
       double x[3];
       vtkpoints->GetPoint(i,x);
       points.push_back(x[0]);
       points.push_back(x[1]);
     }
     
     auto pts =vtkSmartPointer<vtkIdList>::New();
     
     for (vtkIdType i=0;i<ncells;i++)
     {
       dgrid->GetCellPoints(i,pts);
       cells.push_back(pts->GetId(0));
       cells.push_back(pts->GetId(1));
       cells.push_back(pts->GetId(2));
     }
     
     
   }