Tests to see if the pipeline should stop drawing more geometry and just show what it has so far.
If a drawing operation is taking a long time, this function will return true and tell Rhino it should just
finish up and show the frame buffer. This is used in dynamic drawing operations.
RhinoCommon (in RhinoCommon.dll)
public bool InterruptDrawing()
Public Function InterruptDrawing As Boolean
true if the pipeline should stop attempting to draw more geometry and just show the frame buffer.