[vtkusers] Volume Rendering Gradient Opacity Value Range

[serseri]

Hi,

How can I get the value range of gradient values to use on volume rendering?
I try to find optimal values for my samples.

An example usega of gradient opacity function:
http://www.paraview.org/Wiki/VTK/Examples/Cxx/Visualization/RenderPassExistingContext

vtkPiecewiseFunction * volumeGradientOpacity = vtkPiecewiseFunction::New();
volumeGradientOpacity->AddPoint(0,   0.0);
volumeGradientOpacity->AddPoint(90,  0.5);
volumeGradientOpacity->AddPoint(100, 1.0);
volumeProperty->SetGradientOpacity(volumeGradientOpacity);

Thanks.



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