[Insight-users] itk::Mesh and itk::QuadEdgeMesh converter

[Gao, Yi]

Dear Alex,

Thank you for the reply!

I'm trying to use the smoothing filter Arnaud and you contributed. The
triangles it gives are much better shaped than the vtk's windowed sinc
filter!

But my main pipeline is in VTK so in fact I want to convert from
vtkPolyData with QE mesh. Since I have converter between vtkPolyData
<--> itk::Mesh, then the missing step is itk::Mesh <-->QE mesh. That
is where the problem comes from. :)

So I'll just get an itk::Mesh and feed it to the smoothing filter for
QE mesh, I will try that out!

Thanks again! :)

Best,
yi

On Fri, Sep 9, 2011 at 8:47 AM, Alexandre GOUAILLARD
<agouaillard at gmail.com> wrote:
> dear gao yi,
>
> an itk:QuadEdgeMesh is an itk:Mesh. You can pass the pointer to the
> itk:Pointset directly (sharing memory), then you can just make one
> loop on the cell container (and equivalent data) to feed your itk:Mesh
> with the cells. There is a little bit of magic to do as the cells
> types are a little bit different but nothing fancy. Namely, in a
> QEMesh cells are polygons and do not differentiate from triangles,
> quads or others. In your case, if you know it s triangular, then it s
> easier.
>
> Any reason you want to change it to itk:Mesh by the way? QEMesh API is
> supposedly 100% compatible with Mesh, so if there is a limitation,
> please let me know.
>
> What is your specific problem? If you re at miccai, we can take a look
> at it together, otherwise I can give a hand by e-mail.
>
> alex.
>
>
> On Fri, Sep 9, 2011 at 8:29 PM, Gao, Yi <gaoyi.cn at gmail.com> wrote:
>> Dear list,
>>
>> I'm trying to convert a triangular 2D mesh (all in memory, not in
>> file) from itk::QuadEdgeMesh to itk::Mesh (or to VTK polydata).
>>
>> The itkVTKPolyDataReader and writer can do this... but I will need to
>> write to file and then load, which does seem to be the optimal
>> solution. :)
>>
>> I googled but didn't find such a solution, could I get any hint?
>>
>> Thank you in advance for the help!
>>
>> Best,
>> yi
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