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

[Mario Ceresa]

Hello Gaëtan,
Thanks a lot for your response!

You were right: using double as a PointType works perfectly. How silly of me!

BTW should I ever have to extend the swig part of wrap_itk, is it
correct to look at Languages/Python/PyBase/wrap_pyBase.i?

Cheers,

Mario

2009/9/17 Gaëtan Lehmann <gaetan.lehmann at jouy.inra.fr>:
>
> 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