void vtkfig::VectorView::SetQuiverGrid	(	int	nx,
		int	ny
	)

Set quiver points on grid in domain bounding box (2D)

Definition at line 51 of file vtkfigVectorView.cxx.

   {
     assert(state.spacedim==2);
     double bounds[6];
     auto data=vtkDataSet::SafeDownCast(data_producer->GetOutputDataObject(0));
 
     data->GetBounds(bounds);
     
     auto probePoints =  vtkSmartPointer<vtkPoints>::New();
     double dx=(bounds[1]-bounds[0])/((double)nx);
     double dy=(bounds[3]-bounds[2])/((double)ny);
 
     double x=bounds[0]+0.5*dx;
     for (int ix=0; ix<nx;ix++,x+=dx )
     {
       double  y=bounds[2]+0.5*dy;
       for ( int iy=0;iy<ny;iy++,y+=dy )
         probePoints->InsertNextPoint ( x, y, 0);
     }
 
     probePolyData =vtkSmartPointer<vtkPolyData>::New();
     probePolyData->SetPoints(probePoints);
   }