Is it possible to change the labels of vtkCameraOrientationWidget from X,Y,Z to U,V,N?

Support
1

For vtkAxesActor,there is a bunch of methods like:SetXAxisLabelText can be used to change the text.Is there any counterpart for vtkCameraOrientationWidget to do same thing?

2

Hi, Alex,

Possible it is. But it’s not easy.

The six handle labels are defined as hardcoded const char* strings in vtkCameraOrientationRepresentation (https://gitlab.kitware.com/vtk/vtk/-/blob/master/Interaction/Widgets/vtkCameraOrientationRepresentation.h - see member AxisLabelsText at line 320) and there is no way to change them via a setter method. So, you’ll likely need to subclass vtkCameraOrientationRepresentation to add a constructor that is able to set custom labels.

But this is not over yet. vtkCameraOrientationWidget inherits a SetWidgetRepresentation(vtkCameraOrientationRepresentation*) which is protected, so it is not public API. Hence, you will also need to subclass vtkCameraOrientationWidget to either add a constructor able to set your custom vtkCameraOrientationRepresentation subclass or a setter method to change it.

I hope this helps to get you started,

Paulo

3

Hi Alex,

As @Paulo_Carvalho mentioned, the API does not exist yet, but is trivial. It looks like a simple MR.

I’ll extend vtkCameraOrientationRepresentation with these methods…
SetXAxisLabelText(const char*)
SetYAxisLabelText(const char*)
SetZAxisLabelText(const char*)

I just opened a maintenance MR for the widget and representation. The next MR shall take care of these conveniences.

1 Like
4

Hi @jaswantp this would be really be nice to have.