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jcfr authored
- If there is no input or if the input has no points, the vtkTransformPolyDataFilter will display an error message on every update: "No input data". - To prevent the error, if the input is empty then the actor should not be visible since there is nothing to display. This is a good workaround for these unnecessary VTK messages. A discussion was also started on the VTK forum to remove these messages. See https://discourse.vtk.org/t/logging-error-messages-for-empty-input-data/453 From: Kyle Sunderland <sunderlandkyl@gmail.com> git-svn-id: http://svn.slicer.org/Slicer4/trunk@28018 3bd1e089-480b-0410-8dfb-8563597acbee
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