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<font size="-1"><font face="Tahoma">Bonjour, merci de votre réponse.<br>
<br>
Ce n'est pas tout à fait celà.<br>
<br>
Je projette les points du maillage sur le plan z=0, dont
j'obtiens un nouvel ensemble de points.<br>
<br>
C'est ce nouvel ensemble que je triangule avec vtkDelaunay2D.
Seulement le résultat est convexe, ce qui est normal
théoriquement, mais je souhaite conserver la "convexité" de la
forme projetée.<br>
<br>
Par exemple si je projette les points d'un tore sur le plan z=0,
avec vtkDelaunay2D je vais obtenir un disque triangulé alors que
ce que je souhaite c'est un anneaux triangulé. <br>
<br>
Je pensais donc triangulé mon ensemble de points en contraignant
le contour.<br>
A vrai dire, je ne sais pas si vtk propose ce genre de chose.<br>
<br>
Si vous avez une solution à me proposer.<br>
<br>
Cordialement.<br>
<br>
==== translation ====<br>
<br>
I am projecting the points of my mesh on the plane z=0, the
result is a new set of points.<br>
<br>
It's that new set I want to triangulate with vtkDelaunay2D.
VtkDelaunay2D gives me a convex triangulation, which is correct
in theory but not what I want (eg take a torus as an example. If
I project its points on z=0 and triangulate them I'll get a
triangulated disk whereas what I want is a triangulated ring).<br>
<br>
My point of view was to triangulate my set of points giving its
contour (ie the contour of the projection of my mesh) as a
constraint. But in fact, I'm not sure I can do that with Vtk.<br>
<br>
Any suggestion is welcome.<br>
<br>
Cordialy<br>
</font></font><br>
Le 29/07/2010 15:41, Frederic DANESI a écrit :
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<p class="MsoNormal"><span style="font-size: 11pt; font-family:
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c’est bien cela (à partir d’une tranche de l’objet à
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?<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt;
font-family:
"Tahoma","sans-serif"; color:
windowtext;">De :</span></b><span style="font-size:
10pt; font-family:
"Tahoma","sans-serif"; color:
windowtext;"> <a class="moz-txt-link-abbreviated" href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a>
[<a class="moz-txt-link-freetext" href="mailto:vtkusers-bounces@vtk.org">mailto:vtkusers-bounces@vtk.org</a>] <b>De la part de</b>
Nicolas Sarrasin<br>
<b>Envoyé :</b> jeudi 29 juillet 2010 09:20<br>
<b>À :</b> <a class="moz-txt-link-abbreviated" href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
<b>Objet :</b> [vtkusers] contour of a projected mesh<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
"Tahoma","sans-serif";">Hi
everyone,<br>
<br>
Is there a way to get the real (ie not convex) contour of a
set a planar points
?<br>
<br>
I am projecting a mesh on the plane z=0 and I would like to
get the real
contour of this result.<br>
<br>
I looked around vtkSilhouette but didn't get a staisfied
result.<br>
<br>
First of all, maybe I badly used this function so I need
some explanation.<br>
<br>
Secondly, is there another to get what I want ?<br>
<br>
Thanks by advance.</span><span style="font-size: 10pt;"><br>
<br>
</span>--<o:p></o:p></p>
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