[vtkusers] Fill contour

Jothybasu Selvaraj jothybasu at gmail.com
Tue Mar 15 21:41:57 EDT 2016


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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