[vtkusers] BUG in vtkClipPolyData (?)

Bill Lorensen wlorens1 at nycap.rr.com
Wed Oct 25 19:34:58 EDT 2000

Looks like it is not fixed anymore. We'll take a look...


At 12:40 AM 10/26/00 +0200, Sebastien BARRE wrote:
>A long time ago I had a discussion with Bill (or Will) regarding how to perform polygonal capping, and he drives me to :
>I played with that example. Then a couple of month ago I played with that example again, and it was so sloooooooooooow. But still usable, thus I did not worry about that.
>I checked my own code where vtkClipPolyData is used on datasets comprising 200 000 points or more.
>It was *no more* usable, it was so slow that nothing could be done interactively.
>I looked at my code, I checked the examples, and here it is :
>         if you use GetClippedOutput and GetOutput in the same renderer (displaying both the cut and remaining parts), then the vtkClipPolyData filter is updated nearly on each redraw :(( It is therefore impossible to move one or both parts, as the filter keep updating again and again.
>Open capCow.tcl or clipSphCyl.tcl and add :
>clipper SetStartMethod { puts "started" }
>Surprise... :)
>I check the CVS and noticed :
>Revision : 1.20
>Date : 1999/3/19 20:12:0
>Author : 'lorensen'
>State : 'Exp'
>Lines : +4 -3
>Description :
>ERR: was re-executing every time if GetClippedOutput was applied. Added Update method.
>Bill, are you sure it has been fixed ?
>Sebastien BARRE
>IRCOM-SIC, UMR-CNRS 6615 - Université de Poitiers
>Bât. SP2MI, Bvd 3 - Téléport 2, BP 179 F-86960 Futuroscope Cedex
>Tel. : +33 (0)5 49 49 65 92, Fax : +33 (0)5 49 49 65 70
>http://www-sic.univ-poitiers.fr/barre/ ou  http://www.hds.utc.fr/~barre/
>This is the private VTK discussion list. Please keep messages on-topic. Check the FAQ at: <http://public.kitware.com/cgi-bin/vtkfaq>
>Follow this link to subscribe/unsubscribe:

More information about the vtkusers mailing list