[vtkusers] clip surface, fill hole

[Bryn Lloyd]

Hi Alex, hi Bill,


Thanks for the suggestions.

As Goodwin already pointed out, there is a new vtkFillHolesFilter for 
this purpose.

It did the job without any problems.

Bryn



Alexandre GOUAILLARD wrote:
> Hi bryn,
> 
> Long time ago, we developped a class to do that. It's quite simple, but
> still it's creating a triangulated patch for any "hole" on the surface.
> Code is not optimized, comments are in french, but it should still work.
> Give it a try.
> 
> Supposely, you should contact CREATIS lab. (www.creatis.insa-lyon.fr) to be
> able to use it, but I don't foresee any problem. I copy my contact there for
> you to catch up with him, if you want.
> 
> Alex.
> 
> 
> On 6/4/08 8:33 PM, "Bill Lorensen" <bill.lorensen at gmail.com> wrote:
> 
>> Bryn,
>>
>> Look at
>> VTK/Graphics/Testing/Tcl/capCow.tcl
>>
>> an oldie but goodie,
>>
>> Bill
>>
>> On Wed, Jun 4, 2008 at 12:20 PM, Bryn Lloyd <blloyd at vision.ee.ethz.ch> wrote:
>>> Bryn Lloyd wrote:
>>>> Dear users,
>>>>
>>>>
>>>> I would like to clip a triangle surface, e.g. using a plane. Is there a
>>>> filter that will fill the resulting hole with triangles? I.e. the resulting
>>>> surface mesh should remain closed.
>>>>
>>>> I could not find one. Does anybody have any hints/suggestions?
>>>>
>>>> What about using the vtkCutter, doing Delaunay2D on the output (if there
>>>> is only one connected curve/line) and merging the patch with the clipped
>>>>  surface?
>>>
>>> Well, that obviously only works if the curve around the hole is convex . In
>>> my example it is not, so I need a better solution.
>>> Another assumption behind the proposed algorithm is that vtkCutter and
>>> vtkClipPolyData deliver the same cut interface (edges and points). Not sure
>>> if that is true.
>>>
>>>
>>>
>>> --Bryn
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> 


-- 
-------------------------------------------------
Bryn Lloyd
Computer Vision Laboratory
ETH Zürich, Sternwartstrasse 7
CH - 8092 Zürich, Switzerland
Tel: +41 44 63 27690
Fax: +41 44 63 21199
-------------------------------------------------