Hi vtk helpers, There’re always ISO lines on surfaces rendered, as highlighted below: [image] Here’s my code: [image] I can set the width of the lines by “props->SetLineWidth(3.0)”, but I cannot just disable it by assigning 0 to the value. How can I avoid rendering the ISO lines?

I got the problem fixed. The input was indeed empty due to the lack of an explicit invoke of IVtkTools_ShapeDataSource::Update. And the output has no ISO lines at all. The final solution here: [image] Thank you very much buddies @jaswantp @Francois_Mazen

How to avoid rendering ISO lines on surfaces

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Francois_Mazen (François Mazen (Kitware)) May 18, 2025, 10:47am 3

Maybe vtkExtractCellsByType by selecting all types except the line ones would do the trick?