[vtkusers] Draw line with vtk

[K O ranjith]

Hello,
I need to draw a couple of lines in an image viewer (vtkImageViewer2) for
MRI slice planning application. Also should have to perform few operations
(move, roatate)on the lines with mouse interactions and need to retrieve
line properties (new coordinates after movement, width etc).
I have found examples with  two methods while searching
with vtkLineWidget2 and with vtkLine
which approach will be more suitable?
 what is the difference?have any difficulties for manipulation operations
 if use vtkLineWidget2?
Please help
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