[vtkusers] Fill contour

[Jothybasu Selvaraj]

Looks like it has something to do with the resolveCoincidentTopology. The
filled contour is at the same depth as the image slice -that's why it is
not shown.


Jothy

On Wed, Mar 16, 2016 at 12:41 PM, Jothybasu Selvaraj <jothybasu at gmail.com>
wrote:

> I commented this line in the original code.
>
> polyActor->GetProperty()->SetRepresentationToWireframe();
>
>
> On Wed, Mar 16, 2016 at 12:40 PM, Jothybasu Selvaraj <jothybasu at gmail.com>
> wrote:
>
>> Hi David
>>
>> If I set the representation to surface only the outline is shown. I even
>> tried it with a vtkPolyDataMapper and the results are same.
>>
>> Here is the rough pipeline
>>
>> vtkSmartPointer<vtkPolyData>contour=
>>
>>             vtkSmartPointer<vtkPolyData>::New();
>>
>>     contour=this->ContourWidget->GetContourRepresentation()->GetContourRepresentationAsPolyData();
>>
>>
>>
>>     vtkSmartPointer<vtkContourTriangulator>tc=
>>
>>             vtkSmartPointer<vtkContourTriangulator>::New();
>>
>>     tc->SetInputData(contour);
>>
>>     tc->Update();
>>
>>
>>
>>
>>     vtkSmartPointer<vtkDataSetMapper> polyMapper =
>>
>>             vtkSmartPointer<vtkDataSetMapper>::New();
>>
>>     polyMapper->SetInputData(tc->GetOutput());
>>
>>     polyMapper->ScalarVisibilityOn();
>>
>>     polyMapper->Update();
>>
>>
>>
>>      this->polyActor =
>>
>>             vtkSmartPointer<vtkActor>::New();
>>
>>     polyActor->SetMapper(polyMapper);
>>
>>     polyActor->GetProperty()->SetColor(0,1,0);
>>
>>     polyActor->GetProperty()->SetRepresentationToWireframe();
>>
>>
>>     this->ViewRenderer->AddActor(this->polyActor);
>>
>>     this->ViewRenderer->GetRenderWindow()->Render();
>>
>>     this->ViewRenderer->ResetCamera();
>>
>>
>> Thanks
>>
>>
>> Jothy
>>
>>
>> On Wed, Mar 16, 2016 at 12:24 PM, David Gobbi <david.gobbi at gmail.com>
>> wrote:
>>
>>> Hi Jothy,
>>>
>>> The vtkContourTriangulator always produces a filled contour, so there
>>> must be something wrong with the way it is being rendered.  Are you sure
>>> that you aren't calling SetRepresentationToWireframe() on the actor's
>>> property?
>>>
>>>  - David
>>>
>>>
>>> On Tue, Mar 15, 2016 at 5:45 PM, Jothybasu Selvaraj <jothybasu at gmail.com
>>> > wrote:
>>>
>>>> Hi All
>>>>
>>>> I am trying to fill a 2D contour generated by vtkContourWidget. I pass
>>>> the polydata from the contour widget to vtkContourTriangulator and the
>>>> output is as shown in the attached image. But, I want a filled contour. How
>>>> do I do that?
>>>>
>>>>
>>>> Thanks
>>>>
>>>> Jothy
>>>>
>>>
>>>
>>
>
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