[vtkusers] How to keep the distance text of vtkDistanceWidget always visible?

[Liu_tj]

Hi,

I am using vtkDistanceWidget for measure the distance on 3D model. I use vtkDistanceRepresentation3D for this widget because the widget should be rotated when I rotate the 3D model. So, with the vtkDistanceRepresentation3D, the distance text can't be always visible because at some position it will be covered by the 3D model. How can I make the distance text always visible?

Thanks
Liu Peng

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