[vtkusers] Draw line with vtk

[K O ranjith]

Hello,
Thanks very much for the help.
What is the difference between vtk line widgets "vtkLineWidget" and
"vtkLineWidget2 "?
I have to draw the lines above a dicom image displayed in an
vtkImageViewer2



On Fri, Sep 15, 2017 at 6:15 PM, Sankhesh Jhaveri <
sankhesh.jhaveri at kitware.com> wrote:

> Hi,
>
> You should use the widget if you think you would like to *interactively*
> place/draw and edit the line. If your goal is to just display a line given
> a set of parameters and update it without interaction, a simple cell based
> approach should work. See https://lorensen.github.io/VTKExamples/site/Cxx/
> GeometricObjects/LongLine/
>
> Hope that helps.
> Sankhesh
> ​
>
> On Fri, Sep 15, 2017 at 7:19 AM K O ranjith <kor1581 at gmail.com> wrote:
>
>> 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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> --
> Sankhesh Jhaveri *Sr. Research & Development Engineer* | Kitware
> <http://www.kitware.com/> | (518) 881-4417
> ​
>
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