[vtkusers] Initializing vtkImageTracerWidget with coordinates?

[Michael Xanadu]

Hi,

Currently, I'm working with vtkImageTracerWidget. I found out that I can get
the coordinates and lines defined by the traced path () by using
GetPath(polyData). Unfortunately, there's no SetPath(polyData). I wanna
initialize my ImageTracerWidget with a couple of coordinates, where it shall
draw a line or something without user interaction.
Is there any possibility to do something like that?

Regards, Michael
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