[vtkusers] Create an actual mesh from a set of "connected" triangles

[David Doria]

I don't understand how the mesh can be broken? The cells (triangles) are a
function of the points, so if the triangles look correct the connectivity
info should implicitly be there, no? So there is not a way to take triangles
that look like a mesh and make them into an actual mesh in the paraview/vtk
framework?

Thanks,

David


On Sat, Mar 21, 2009 at 1:47 PM, Dominik Szczerba <dominik at itis.ethz.ch>wrote:

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> well if the mesh is arbitrarily broken then VTK will not help you. you
> may need a meshing application.
>
> David Doria wrote:
> > When I do "Clean to grid" and then "Extract surface", and then
> > "Subdivide", the subdivide filter still crashes.
> >
> > Thanks,
> >
> > David
> >
> >
> > On Sat, Mar 21, 2009 at 1:30 PM, Thompson, David C <dcthomp at sandia.gov
> > <mailto:dcthomp at sandia.gov>> wrote:
> >
> >     "Clean to grid" creates an unstructured grid. If you use it, you
> >     must convert
> >     the model back to polydata with "Extract surface." Or you can use the
> >     vtkCleanPolyData filter with PointMergingOn().
> >
> >        David
> >     ________________________________________
> >     From: vtkusers-bounces at vtk.org <mailto:vtkusers-bounces at vtk.org>
> >     [vtkusers-bounces at vtk.org <mailto:vtkusers-bounces at vtk.org>] On
> >     Behalf Of David Doria [daviddoria at gmail.com
> >     <mailto:daviddoria at gmail.com>]
> >     Sent: Saturday, March 21, 2009 10:29
> >     To: Dominik Szczerba
> >     Cc: vtkusers at vtk.org <mailto:vtkusers at vtk.org>
> >     Subject: Re: [vtkusers] Create an actual mesh from a set of
> >     "connected" triangles
> >
> >     Using paraview, once I do "clean to grid", none of the meshing
> >     operations (subdivide, Loop subdivision) are available.
> >
> >     Thanks,
> >
> >     David
> >
> >
> >     2009/3/21 Dominik Szczerba <dominik at itis.ethz.ch
> >     <mailto:dominik at itis.ethz.ch><mailto:dominik at itis.ethz.ch
> >     <mailto:dominik at itis.ethz.ch>>>
> > try clean to grid
> >
> > David Doria wrote:
> >> I have a vtp file where the triangles look connected, but the file
> >> apparently doesn't think they are (none of the mesh operations work).
> >
> >> http://rpi.edu/~doriad/dolphin.vtp<http://rpi.edu/%7Edoriad/dolphin.vtp>
> > <http://rpi.edu/%7Edoriad/dolphin.vtp><
> http://rpi.edu/%7Edoriad/dolphin.vtp>
> >
> >> Is there a filter that will get these triangles into a usable mesh?
> >
> >> Thanks,
> >
> >> David
> >
> >
> >
> >
> > ------------------------------------------------------------------------
> >
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>
> - --
> Dominik Szczerba, PhD
> Computational Physics Group
> IT'IS Foundation for Research
> www.itis.ethz.ch
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