[vtkusers] Using "Boolean Operations on Surfaces" on arbitrary mesh (stl) files

[Cory Quammen]

Doyoung,

I checked your STL files in ParaView, and it looks like it is a fully
connected triangle mesh, so I would expect the boolean filter to work.

It appears that one object is a translated version of the other
object, so there is no overlap. I think the filter works appropriately
in this case. I'll see if I can reproduce your error.

Thanks,
Cory

On Wed, Aug 10, 2011 at 10:09 AM, Cory Quammen <cquammen at cs.unc.edu> wrote:
> On Wed, Aug 10, 2011 at 8:56 AM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
>> You probably need to run vtkCleanPolyData on the output of the reader. I
>> think the STL reader creates triangles that each have their own sets of
>> points.
>
> Yes, the triangles in a surface need to be connected so that the
> inside/outside tests works. This filter won't work on polygon soup.
>
> - Cory
>
>>
>> On Tue, Aug 9, 2011 at 12:13 AM, louis10th <doyoungchang at gmail.com> wrote:
>>>
>>> The program compiles with no error :)
>>> But when I execute the exe it crashes.
>>>
>>> I did try the following and the file looks reasonable.
>>> I will also try Paraview.
>>>
>>> Thanks!
>>>
>>> --------------------
>>>
>>>        vtkSTLReader *volumeReader = vtkSTLReader::New();
>>>                volumeReader->SetFileName("test.stl");
>>>
>>>        vtkPolyDataMapper *stlMapper=vtkPolyDataMapper::New();
>>>        stlMapper->SetInputConnection (volumeReader->GetOutputPort());
>>>
>>>        vtkLODActor *stlActor=vtkLODActor::New();
>>>        stlActor->SetMapper(stlMapper);
>>>
>>>        renderer->AddActor( stlActor );
>>>
>>>        volumeReader-> Delete(); stlMapper->Delete(); stlActor->Delete();
>>>
>>>        renWin->Render();
>>>        renWinInteractor->Start();
>>>
>>>
>>>
>>>
>>> --
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>
>
>
> --
> Cory Quammen
> Research Associate
> Department of Computer Science
> The University of North Carolina at Chapel Hill
>



-- 
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill