virtual bool Paint(vtkContext2D *painter)
Paint event for the item, called whenever the item needs to be drawn.
Class for drawing 2D primitives to a graphical context.
base class for items that are part of a vtkContextScene.
virtual void Update()
Perform any updates to the item that may be necessary before rendering.
virtual void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.