[Insight-users] Problem with ImageDimension and typedef

[Bryn]

> I cannot reproduce your problem without seeing a minimal example of  
> your code...
>
I am posting a some code as attachment, to show the problem...

> The pixeltype for the VectorImage, if you write code, should be 
> obtained from the Image class.. This is the reason for generic 
> programming. But if you find it convenient, I can easily add 
> overloaded  = operators in itk::VariableLengthVector and itk::Array, 
> which is probably a good thing anyway, since they should be assignable 
> from each other...
>
That would be nice.

> I still do not understand what compiles in gcc34 and not in gcc33. If 
> any, I've seen things go the other way......
>
It seems that, if I define a templated class which holds a specific type 
of Image or VectorImage, say VectorImage<int,3>.
I then typedef  the PixelType from the VectorImage, and finally add a 
function with this PixelType as argument type, gcc-3.3 compiles ok.

so say I have something like this (inside the class):

typedef VectorImage<int,3>    VectorImageType;
typedef VectorImageType::PixelType PType;

PType method( PType );

gcc-3.3 compiles ok.


But if I change this VectorImage typedef to:

typedef VectorImage<int,ImageDimension>    VectorImageType;

        where the ImageDimension is defined by:
 
        itkStaticConstMacro(ImageDimension, unsigned int,
                              TInputImage::ImageDimension);



gcc-3.3 complains. gcc-3.4 compiles both versions just fine.



Maybe something I am doing is wrong. It seems it has to do with the way 
I get the ImageDimension.

It would be nice to know why the second version doesn't compile with gcc-3.3



Thanks

Bryn



> -karthik
>
>>
>>
>> Thanks
>> Bryn
>>
>>
>> _______________________________________________
>> Insight-users mailing list
>> Insight-users at itk.org
>> http://www.itk.org/mailman/listinfo/insight-users
>>

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///author: Bryn Lloyd

#ifndef _itkVectorImageAndTypedefTest_txx
#define _itkVectorImageAndTypedefTest_txx





namespace itk
{


/**
 *    Constructor
 */
template <class TInputImage,class TOutputImage>
VectorImageAndTypedefTest<TInputImage,TOutputImage>
::VectorImageAndTypedefTest()
{

}



/**
 * Sort an int Array
 */
template <class TInputImage,class TOutputImage>
typename VectorImageAndTypedefTest<TInputImage,TOutputImage>::TestPixelType
VectorImageAndTypedefTest<TInputImage,TOutputImage>
::DoSomething(const TestPixelType& indices)
{
  TestPixelType test(3);
  return test;
}


/**
 * Sort an int Array
 */
template <class TInputImage,class TOutputImage>
void
VectorImageAndTypedefTest<TInputImage,TOutputImage>
::GenerateData()
{
}





/**
 *  Print Self
 */
template <class TInputImage,class TOutputImage>
void 
VectorImageAndTypedefTest<TInputImage,TOutputImage>
::PrintSelf(std::ostream& os, Indent indent) const
{
  Superclass::PrintSelf(os,indent);
}



} // end namespace itk

#endif