[Gimias-developers] the .png image from a Data Entity

[Ana Maria Quintero Padron]

Hello everyone,

 

I'm writing you this email because we need to get the .png image from a Data 
Entity.

 

We browse through the data tree like this:

 

      Core::DataEntity::Pointer dataEntity1;

      Core::DataEntityList::Pointer dataEntityList = 
GetListBrowser()->GetDataEntityList();

      Core::DataEntityList::iterator it = dataEntityList->Begin();

      Core::DataEntityHelper helper;

 

      for ( int i=0; it != dataEntityList->End(); ++it,i++) 

      {

            dataEntity1 = dataEntityList->Get(it);

                  (...)

}

 

We need to get a file with the .png image from each dataEntity. I have tried to 
find an example in the existing source code, I have found the following lines 
after:

 

vtkRenderer* vtkrenderer;

      wxColour paleWhite(241,244,250);

      vtkrenderer = Get3D()->GetRenderer()->GetVtkRenderer();

      vtkrenderer->SetBackground(1,1,1);

      vtkRenderLargeImage* renderLarge = vtkRenderLargeImage::New();

      renderLarge->SetInput(vtkrenderer);

      vtkPNGWriter* writer=vtkPNGWriter::New();

      writer->SetInputConnection(renderLarge->GetOutputPort());

      writer->SetFileName(imageName.c_str()) ;

      writer->Write();

      vtkrenderer->SetBackground(0,0,0);

 

Which is perfect for saving image of the current view, but the image has to be 
already loaded in the working area, and we need to get the image .png from the 
data entity, maybe going through vtkSmartPointer< vtkImageData > vtkImage; but 
I do not know how I could do this.

 

 

Do you have any idea to solve this? I would appreciate your help.

Thank you very much in advance.

Best regards,

 

Miriam Quintero Padrón

 

 

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