Disable / hide normal vectors of the clip plane

[leminhson]

Hi everyone,

I am wondering that it is possible to disable or hide the normal vectors of the clip plane ?

I need this method because, when I apply set_scale to the plotter, the corresponding normal vector is scaled as well and it will be distorted.

In addition, sometime we do not want users to rotate the clip plane, only slide them along the axis.

[github-actions]

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[mforbes]

Yes. Set their opacity to be zero:

w = plotter.add_plane_widget(...)
w.GetNormalProperty().SetOpacity(0)

This will hide the normal vectors and make them no-longer selectable, so the plane cannot be rotated.

See:

https://itk.org/pipermail/vtkusers/2006-July/036465.html

[leminhson]

@mforbes : Thank you for your solution. Now I can solve my problem.
However, if I apply the method 'set_scale' to the plotter, it is really difficult to select the clip plane for sliding

[banesullivan]

@mforbes, thanks for sharing that simple solution (this had been bugging me a really long time and I never thought to set the opacity 🤦🏻‍♂️ )

I will add a PR with thiis