[vtkusers] vtkSeedWidget: How to retrieve handle positions?1

[Karthik Krishnan]

On Thu, Apr 30, 2009 at 5:02 PM, kent williams <nkwmailinglists at gmail.com>wrote:

> I think I see how to to do it, but shouldn't there be some sort of
> method that does this without all the indirection required?
>
> It looks like you have to do it this way:
>
> typedef double SeedPoint[3];
> typedef std::list<SeedPoint> SeedPointList;
>
> SeedPointList pointList;
>
> vtkHandleWidget *handle;
> for(unsigned i = 0; (handle = seedWidget->GetSeed(i)) != 0; i++)
>  {
>  SeedPoint curPoint;
>  handle->GetWorldPosition(curPoint);
>  pointList.push_back(curPoint);
>  }
>
> Is this correct?


That is right :). Its retrieved from the seedwidget's children, the handles.



>
>
> Second important question -- does the 'world position' returned mean
> the 'real' world position or does it -- like vtkContourWidget -- have
> world X,Y,Z permuted depending on the orientation of the view?


It returns the real world position.

Thanks
--
karthik


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-- 
Karthik Krishnan
R&D Engineer,
Kitware Inc.
Ph: 518 881 4919
Fax: 518 371 4573
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