I've got a program in place where the reslice output from a vtkImagePlaneWidget is being shown in a second frame in the same window. Whilst as long as the Widget it within the field of view of the camera everything works fine, if the widget is offscreen when the program starts then it won't seem to calculate the proper reslice and output until it's been brought onto the screen. Is there a way to force it to update its internal pipeline whilst it's not visible on the display?
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