[Insight-users] how to wrap std::vector?

[Gaëtan Lehmann]

Le 10 sept. 09 à 14:32, Mario Ceresa a écrit :

> Hello everybody,

Hi Mario,

> I stumbled upon a fascinating problem while using wrap_itk and I
> thought that maybe someone here could help me :)
>
> I have a method called GetAlives which returns me a collection of
> points as a std::vector<itk::Point>. How can I use it from python? So
> far I only managed to get a SwigPointer to the collection, not the
> collection itself:
>
> (Pdb) print alives
> <Swig Object of type 'std::vector< itk::Point< unsigned short,3u
>> ,std::allocator< itk::Point< unsigned short,3u > > > *' at 0x3f18870>
> (Pdb) print dir(alives)
> ['__class__', '__cmp__', '__delattr__', '__doc__', '__eq__', '__ge__',
> '__getattribute__', '__gt__', '__hash__', '__hex__', '__init__',
> '__int__', '__le__', '__long__', '__lt__', '__ne__', '__new__',
> '__oct__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__',
> '__str__', 'acquire', 'append', 'disown', 'next', 'own']
>
> Is there a way to get access to the collection using wrap_itk?
>

You can access to the type std::vector< itk::Point< double, 3 > > in  
the last wrapitk version - http://wrapitk.googlecode.com. Here is an  
example:

In [3]: v = itk.vector.itkPointD3()

In [4]: v.size()
Out[4]: 0

In [5]: v.push_back([1,1,2])

In [6]: v.size()
Out[6]: 1

In [7]: v[0]
Out[7]: itkPointD3([1, 1, 2])

It's not exactly the type you're looking for though, but there I think  
you may have made a mistake by using itk::Point< unsigned short, 3 >.  
Can you explain why you chose this type?

> You can see all the details in the attached cmake project.
>
> Thanks for any help or suggestion you could provide!
>

Thanks for providing the sources - as always, it helps a lot :-)

Gaëtan

-- 
Gaëtan Lehmann
Biologie du Développement et de la Reproduction
INRA de Jouy-en-Josas (France)
tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
http://voxel.jouy.inra.fr  http://www.itk.org
http://www.mandriva.org  http://www.bepo.fr

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