CGAL users discussion list

[Michel Audette <>]

Hi again,

Sorry, I didn't read your mail correctly. I'll give your solution a
try and report back.

  // Output
  CGAL::output_c3t3_to_vtk_unstructured_grid(c3t3, output);
  output->Squeeze();

Best wishes,

Michel
On Fri, Jun 10, 2011 at 10:36 AM, Michel Audette
<>
 wrote:
> Hi Laurent,
>
> ah, my mistake. Yes, to an extent, I'm using VTK-based software, but
> some of it is not yet in the VTK code itself. I'm working with
> Sebastien Valette to refine his ACVD code and apply it to my project.
>
> I'll try to track down a conversion from .mesh to .vtk then. I think
> that there may one out there somewhere.
>
> We can revisit what you are doing in the near future, perhaps in July.
>
> Cheers,
>
> Michel
> On Fri, Jun 10, 2011 at 6:09 AM, Laurent Rineau (GeometryFactory)
> <>
>  wrote:
>> On vendredi 10 juin 2011 00:51:41 Michel Audette wrote:
>>> Dear CGAL deveopers,
>>>
>>> I did a search on vtk in the 3.8 source code, and found
>>> Complex_3_in_triangulation_3_to_vtk , which sounds like what I need. I
>>> would like to be able to visualize the CGAL tetrahedralization results
>>> with Paraview.
>>>
>>> Is there an example or demo somewhere that documents how to use this 
>>> class?
>>
>> No. That is undocumented. I wrote this function with the purpose to write a
>> VTK filter that does 3D meshing of 3D images (is not it what you are 
>> doing)?
>>
>> The usage is simple :
>>  // given a C3t3 variable 'c3t3',
>>  // given vtkUnstructuredGrid* pointer output
>>  //   (that points to a valid empty grid)
>>
>>  CGAL::output_c3t3_to_vtk_unstructured_grid(c3t3, output);
>>  output->Squeeze(); // I do not remember why I used Squeeze().
>>
>> As attachment I give you my non-finished attempt to write the VTK filter. I
>> image you can read VTK code easily. It is not finished because:
>>  - it does not use the ability of CGAL-3.8 to preserve sharp edges
>>  - I do not know what is the common way to pass parameters (such as size
>> criteria) to a VTK filter.
>>
>> And I have not sure that still works. I started that more than a year ago, 
>> and
>> then I got other more priority tasks to do and I forgot that VTK filter.
>>
>> Maybe we could collaborate and finish that together.
>>
>> --
>> Laurent Rineau, PhD
>> R&D Engineer at GeometryFactory           http://www.geometryfactory.com/
>> Release Manager of the CGAL Project       http://www.cgal.org/
>>
>> --
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>>
>>
>
>
>
> --
> Michel Audette, Ph.D.
> R & D Engineer,
> Kitware Inc.,
> Chapel Hill, N.C.
>



-- 
Michel Audette, Ph.D.
R & D Engineer,
Kitware Inc.,
Chapel Hill, N.C.