[vtkusers] vtkLookupTable crashes in release mode. VTK8.1.1

[Vipul Pai Raikar]

Hi Andy,

Here is the minimum code that works well in setting up a gray colormap.

vtkSmartPointer<vtkColorTransferFunction> colorTxFn=
    vtkSmartPointer<vtkColorTransferFunction>::New();
  for (auto i = 0; i < 256; ++i) {
    // colorTxFn->AddRGBPoint(i, i/255.0,i/255.0,i/255.0);
    colorTxFn->AddHSVPoint(i, 0, 0, i / 255.0);
  }
  colorTxFn->SetAlpha(1);

HTH

Vipul



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