[vtkusers] vtkPolyData exported to OpenInventor

[imho]

Hi Mathieu,

see my interlaced answers :

>     Next time you should proceed step by step. For example, with your old
> pipeline:
>
>  vtkContourFilter -> vtkTriangleFilter -> vtkDecimatePro ->
>  vtkSmoothPolyDataFilter -> vtkPolyDataNormals -> vtkStripper ->
> vtkPolyDataWriter
>
> *then* write a simple python script:
>
> r = vtkPolyDataReader
> w = vtkIVWriter
>
> you'll see your file will be buggy.


that's what I've tried in fact, and as you say my file is buggy

> Then try:
>
> r = vtkPolyDataReader
> clean = vtkCleanPolyData
> w = vtkIVWriter
>
> in order to remove all degenerate cells
>
> r = vtkPolyDataReader
> clean = vtkCleanPolyData
> tf = vtkTriangleFilter
> w = vtkIVWriter
>
> in order to: first remove degenerate cells, *then* turn strips into
> triangle (and not the contrary!)
>
> HTH
> mathieu


I've just tried this now, and I still have the same error.
So I'll try what you've said, a correct pipeline :

 vtkContourFilter -> vtkDecimatePro ->
 vtkSmoothPolyDataFilter -> vtkPolyDataNormals -> vtkStripper ->
 vtkCleanPolyData -> vtkTriangleFilter

and then a  vtkPolyDataReader -> vtkIVWriter

I'll tell you what I've got ;-)

thanks (again)

imho

>
> imho wrote:
>
>> Hi all,
>>
>> I have a vtkPolyData with these filters :
>> vtkContourFilter -> vtkTriangleFilter -> vtkDecimatePro ->
>> vtkSmoothPolyDataFilter -> vtkPolyDataNormals -> vtkStripper ->
>> vtkCleanPolyData
>>
>> I can export it to a OpenInventor (iv) file with the vtkIVWriter.
>> I have updated my vtk version with the nightly release to fix some bugs
>> in these class.
>>
>> I'd like to use the MESH program http://mesh.epfl.ch/ to compute
>> differences between two meshes.
>>
>> This program said that my poly is: "empty (no faces)"
>>
>> What can I do to fix this?
>> Wich filter should I add in my pipeline to have faces?
>>
>> Thanks
>>
>> imho
>>
>>
>>
>>
>>
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