[vtkusers] how to change vtkImageBlend opacity

[Muhammad Jawad]

Dear Vtk users,

I am using vtkimageblend class for multiple volumes and want to change
opacity of volumes. Here I put the small code for single volume for
simplicity.

ImageViewer is working fine but opacity is not working.


Any body have an idea that what I'm doing wrong here ?


vtkSmartPointer<vtkImageBlend> blend = vtkSmartPointer<vtkImageBlend>::New();


blend->SetInputData(0, reader->GetOutput());


blend->SetOpacity(0, 0.3);


vtkSmartPointer<vtkImageViewer2> imgViewer =
vtkSmartPointer<vtkImageViewer2>::New();


imgViewer->SetInputData(blend->GetOutput());


imgViewer->UpdateDisplayExtent();





--

Regards,

Muhammad Jawad
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