[vtkusers] Label vtkActor

[David Lonie]

Sounds like vtkCaptionActor2D is what you're looking for:

http://www.vtk.org/doc/nightly/html/classvtkCaptionActor2D.html

On Wed, Sep 23, 2015 at 9:32 AM, joaoroberto88 <joaorobertojr88 at gmail.com>
wrote:

> Hi Cory,
>
> Thanks for your reply. I tried to use vtkTextActor, but I'm having some
> issue about positioning it near to the station icon actor (see attached
> image and code below). As you can see I'm using the same station icon
> coordinate and the label "Station #1" isn't positioned correctly. Do you
> have any clues? Also, since vtkTextActor is two-dimesional I think the text
> won't follow the image actor while the user interacts with the rendered
> map.
>
> Here is the main code that creates both actors:
>
>     vtkSmartPointer<vtkPNGReader> iconReader =
> vtkSmartPointer<vtkPNGReader>::New();
>     iconReader->SetFileName("~/station.png");
>     iconReader->Update();
>
>     vtkSmartPointer<vtkImageData> imageData = iconReader->GetOutput();
>     imageData->SetOrigin(station->getUtmX(), station->getUtmY(), 0);  //
> the
> UTM-X and UTM-Y from UI
>
>     vtkSmartPointer<vtkImageChangeInformation> imageResize =
> vtkSmartPointer<vtkImageChangeInformation>::New();
>     imageResize->SetInputData(imageData);
>     imageResize->SetOutputSpacing(2, 2, 1); // Resizes the image
>     imageResize->Update();
>
>     vtkSmartPointer<vtkDataSetMapper> iconMapper =
> vtkSmartPointer<vtkDataSetMapper>::New();
>     iconMapper->SetInputData(imageResize->GetOutput());
>
>     vtkSmartPointer<vtkActor> iconActor = vtkSmartPointer<vtkActor>::New();
>     iconActor->SetMapper(iconMapper);
>
>     vtkSmartPointer<vtkTextActor> textActor =
> vtkSmartPointer<vtkTextActor>::New();
>     textActor->GetTextProperty()->SetFontSize ( 12 );
>     textActor->SetPosition2 ( iconActor->GetPosition()[0],
> iconActor->GetPosition()[1] - 20 );
>     renderer->AddActor2D ( textActor );
>     textActor->SetInput( station->getName().toStdString().c_str() );
>     textActor->GetTextProperty()->SetColor ( 1.0,0.0,0.0 );
>
>     renderer->AddActor(textActor);
>     renderer->AddActor(iconActor);
>
> Thanks,
>
> Joao.
>
>
>
> --
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