[vtkusers] vtkPlane::ProjectPoint : how to get projected point ?

[Philippe Pouletaut]

Hello vtkuser,

I would like to get projected points onto a plane from a polydata set.
I use VTK5.0 and try the vtkPlane ProjectPoint method as the tcl example 
follows :

vtkPlane plane
   set origin [list 2.0 0.0 0.0]
    set normal [list -1.0 0.0 0.0]
    set xproj [list 0.0 0.0 0.0]   
    set p1 [list 0.0 1.0 0.0]   

   eval [plane ProjectPoint $p1 $origin $normal $xproj]

But it doesn't work ... It indicates that the calling arguments are bad 
or the method is not found.
I've also tested the GeneralizedProjectPoint: The same error occurs.

Can anybody help me to find what is wrong ? Is there another way to get 
projected points on a plane ?

Many thanks for your attention.

-- 
Philippe POULETAUT
Université de Technologie de Compiègne
Dpt Génie Biologique. UMR 6600
BP 20529 F 60205 Compiègne Cedex - France

Tél.: +33 (0)3.44.23.44.23 poste  53.11
fax : 03 44 20 79 42
courriel : Philippe.Pouletaut at utc.fr