template<class V , class IV >

void vtkfig::DataSet::SetSimplexGrid	(	int	dim,
		const V &	points,
		const IV &	cells
	)

inline

Enter data of a simplex grid.

Template Parameters

V	Vector class counting from zero with member functions size() and operator[]. std::vector will work.
IV	Vector class counting from zero with member functions size() and operator[]. std::vector will work.

Parameters

dim	Space dimension (2 or 3)
points	Point coordinates, stored consecutively. In 2D, coordinates of point i are `(points[2i],points[2i+1])` In 3D, coordinates of point i are `(points[3i],points[3i+1],,points[3*i+2])`
cells	Simplex point indices (counting from 0!) In 2D, point indices of triangle i are `(cells[3i],cells[3i+1],cells[3i+2])` In 3D, point indices of tetrahedron i are `(cells[3i],cells[3i+1],cells[3i+2],cells[3*i+3])`

Definition at line 343 of file vtkfigDataSet.h.

   {
     if (this->data==NULL)
       this->data=vtkSmartPointer<vtkUnstructuredGrid>::New();
     
     auto udata=vtkUnstructuredGrid::SafeDownCast(this->data);
     udata->Reset();
     
     this->spacedim=dim;
     auto gridpoints = vtkSmartPointer<vtkPoints>::New();
     udata->SetPoints(gridpoints);
     
     if (this->spacedim==2)
     {
       for (int icell=0;icell<cells.size(); icell+=3)
       {
         vtkIdType        c[3]={cells[icell+0],cells[icell+1],cells[icell+2]};
         udata->InsertNextCell(VTK_TRIANGLE,3,c);
       }
       
       for (int ipoint=0;ipoint<points.size(); ipoint+=2)
       {
         gridpoints->InsertNextPoint(
           points[ipoint+0]*coordinate_scale_factor*coordinate_scale_factor_xyz[0],
           points[ipoint+1]*coordinate_scale_factor*coordinate_scale_factor_xyz[1],
           0);
       }
     }
     else
     {
       for (int icell=0;icell<cells.size(); icell+=4)
       {
         vtkIdType        c[4]={cells[icell+0],cells[icell+1],cells[icell+2],cells[icell+3]};
         udata->InsertNextCell(VTK_TETRA,4,c);
       }
       
       for (int ipoint=0;ipoint<points.size(); ipoint+=3)
       {
         gridpoints->InsertNextPoint(points[ipoint+0]*coordinate_scale_factor*coordinate_scale_factor_xyz[0],
                                     points[ipoint+1]*coordinate_scale_factor*coordinate_scale_factor_xyz[1],
                                     points[ipoint+2]*coordinate_scale_factor*coordinate_scale_factor_xyz[2]
           );
       }
     }    
   }