[vtkusers] how to link new points added to a polydata

[cerina]

David Doria-2-3 wrote
> 
> Please make a compile example of the problem. It seems to me like the
> problem doesn't have anything to do with the way you are getting the
> points to add, so you should be able to do this in < 20 lines. (See
> http://www.vtk.org/Wiki/VTK/MinimalExample for more details).
> 
> David
> 
Thanks David, I resolved it.
i replace the prevous code with this:
 int a=polydata->GetNumberOfPoints()-1;
		  int b=a+1;
		 int c=a+2;
polydata->GetPoints()->InsertPoint(a,-1.79482e-008, 0.12, -0.48); 
polydata->GetPoints()->InsertPoint(b,-0.00083353, 0.12, -0.00472707); 
polydata->GetPoints()->InsertPoint(c,-0.00164172, 0.12, -0.00451052);
polydata->GetPoints()->Modified(); 
polydata->Modified(); 
polydata->Update(); 
vtkIdList* pts=vtkIdList::New(); 
pts->InsertId(0,a); 
pts->InsertNextId(b); 
pts->InsertNextId(c); 
cout<<"ok creation de pts"<<endl; 
polydata->GetPolys()->InsertNextCell(pts); 
polydata->BuildCells();
cout<<"ok ajout de cellule de pts"<<endl;

vtkIdList* ptss=vtkIdList::New(); 
ptss->InsertId(0,11); 
ptss->InsertNextId(a); 
ptss->InsertNextId(b); 
polydata->GetPolys()->InsertNextCell(ptss); 
polydata->GetPolys()->Modified(); 
polydata->Modified(); 
polydata->Update(); 

And it works: it adds new points, and new cells also :)



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