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

Set quiver points on grid in domain bounding box (3D)

Definition at line 75 of file vtkfigVectorView.cxx.

   {
     assert(state.spacedim==3);
 
     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 dz=(bounds[5]-bounds[4])/((double)nz);
     
     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 )
       {
         double  z=bounds[4]+0.5*dz;
         for ( int iz=0;iz<nz;iz++,z+=dz )
           probePoints->InsertNextPoint ( x, y, z);
       }
     }
     
     probePolyData =vtkSmartPointer<vtkPolyData>::New();
     probePolyData->SetPoints(probePoints);
   }