[vtkusers] Is there any alternative to vtkDelanuay3D to connect points of only surface area of a mesh?

[Frederic DANESI]

Indeed, vtkDelunay2D seems to be a good solution.

I don’t know if that is exactly what you are looking for, but while using
vtkDelaunay2D, you will be able to set points (as input) and constraints (as
“source”) which could represent inside contour for example 
 This can help
you to create a surface with a hole for example. However, be aware that
Delaunay triangulation while provide you with a convex hull (or a “more
convex” that you might expect) 
 

By the way, if you are looking for a concave shape, you have to consider
setting all your boundary edges as source for Delaunay2D, and you might have
to add some post-treatment for cleaning the extra triangles 


I used this method with rather good results  ! 

If this is not what you are looking for, maybe you should consider to sketch
out some points and desired output as an example 


 

Fred.

 

 

Cordialement,

F.Danesi

--

Département DINCCS (Département Ingénierie Numérique, Conception
Collaborative et Simulation) 

MICADO / DINCCS 

Pole de Haute Technologie, 7 boulevard Jean Delautre (IFTS) 

08000 Charleville-Mézières 

Tel. : 03.24.41.69.55 / 06.62.76.13.32 

Email : frederic.danesi at dinccs.com 

Web: www.afmicado.com / www.dinccs.com

   

 

De : vtkusers-bounces+frederic.danesi=dinccs.com at vtk.org
[mailto:vtkusers-bounces+frederic.danesi=dinccs.com at vtk.org] De la part de
Gökhan ERSOY
Envoyé : mardi 26 février 2008 20:31
À : vtkusers at vtk.org
Objet : [vtkusers] Is there any alternative to vtkDelanuay3D to connect
points of only surface area of a mesh?

 

 Hi,

 

 I am trying examples about vtkDelanuay3D. I saw that this function is
getting all points connected to eachother as triangles, and construct a
surface from outside points. But I want "only outside points" get connected
to eachother and construct only a surface. So the object, that is
constructed from points, would have a gap inside. For example, like a bowl.
Is there anyone knows an alternative function to vtkDelanuay3D?

 

 Thanks,

 Gökhan

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