[Rtk-users] Linker problem

[Simon Rit]

Hi Cyril,
I don't think it is allowed in C++ to change the
private/protected/public type of a method in daughter classes.
Otherwise, it would screw up the purpose of it. If your filter is not
a BackProjection and you don't want to inherit from it, I would advise
you to copy paste the GetIndexToIndexMatrix in your class. There are a
few things there that depends on some class members so you will have
to simplify it for your case (or have the same members in your class).
Simon


On Thu, May 30, 2013 at 5:48 PM, MORY, CYRIL <Cyril.Mory at philips.com> wrote:
> Hi,
>
>
>
> I’ve written a small filter deriving from rtk::BackProjectionImageFilter,
> because I needed to access the protected methods GetProjection() and
> GetIndexToIndexProjectionMatrix() for a CUDA filter I’m writing.
>
> The filter has only two additional methods, both public, called
> PublicGetProjection() and PublicGetIndexToIndexProjectionMatrix(), which
> call their protected counterparts.
>
> The .h and .txx files are below.
>
>
>
> When creating this filter in my CUDA filter, I get an error message from the
> linker :
>
> ../../bin/librtkcuda.a(rtkCudaProjectionStackToFourDImageFilter.cxx.o): In
> function `rtk::PublicBackProjectionImageFilter<itk::Image<float, 3u>,
> itk::Image<float, 3u> >::New()':
>
> /home/cyril/sources/rtk/RTK/code/rtkPublicBackProjectionImageFilter.h:57:
> undefined reference to
> `rtk::PublicBackProjectionImageFilter<itk::Image<float, 3u>,
> itk::Image<float, 3u> >::PublicBackProjectionImageFilter()'
>
> collect2: error: ld returned 1 exit status
>
>
>
> It’s probably a stupid mistake, but I can’t find it. Can someone help me ?
>
>
>
> rtkPublicBackProjectionImageFilter.h
>
>
>
>
>
> #ifndef __rtkPublicBackProjectionImageFilter_h
>
> #define __rtkPublicBackProjectionImageFilter_h
>
>
>
> #include "rtkBackProjectionImageFilter.h"
>
>
>
> namespace rtk
>
> {
>
>
>
> /** \class PublicBackProjectionImageFilter
>
> * \brief BackProjectionImageFilter where protected methods are made public
>
> *
>
> * This filter exposes some of the methods that are protected in
> BackProjectionImageFilter
>
> * Required for CudaProjectionStackToFourDImageFilter
>
> *
>
> * \author Cyril Mory
>
> *
>
> * \ingroup Projector
>
> */
>
> template <class TInputImage, class TOutputImage>
>
> class ITK_EXPORT PublicBackProjectionImageFilter :
>
>         public rtk::BackProjectionImageFilter<TInputImage,TOutputImage>
>
> {
>
> public:
>
>     /** Standard class typedefs. */
>
>     typedef PublicBackProjectionImageFilter                         Self;
>
>     typedef itk::ImageToImageFilter<TInputImage,TOutputImage> Superclass;
>
>     typedef itk::SmartPointer<Self>                           Pointer;
>
>     typedef itk::SmartPointer<const Self>                     ConstPointer;
>
>     typedef typename TInputImage::PixelType
> InputPixelType;
>
>     typedef typename TOutputImage::RegionType
> OutputImageRegionType;
>
>
>
>     typedef rtk::ProjectionGeometry<TOutputImage::ImageDimension>
> GeometryType;
>
>     typedef typename GeometryType::Pointer
> GeometryPointer;
>
>     typedef typename GeometryType::MatrixType
> ProjectionMatrixType;
>
>     typedef itk::Image<InputPixelType, TInputImage::ImageDimension-1>
> ProjectionImageType;
>
>     typedef typename ProjectionImageType::Pointer
> ProjectionImagePointer;
>
>
>
>     /** Method for creation through the object factory. */
>
>     itkNewMacro(Self)
>
>
>
>     /** Run-time type information (and related methods). */
>
>     itkTypeMacro(PublicBackProjectionImageFilter, BackProjectionImageFilter)
>
>
>
>     /** The input is a stack of projections, we need to interpolate in one
> projection
>
>       for efficiency during interpolation. Use of itk::ExtractImageFilter is
>
>       not threadsafe in ThreadedGenerateData, this one is. The output can be
> multiplied by a constant. */
>
>     ProjectionImagePointer PublicGetProjection(const unsigned int iProj);
>
>
>
>     /** Creates iProj index to index projection matrices with current inputs
>
>       instead of the physical point to physical point projection matrix
> provided by Geometry */
>
>     ProjectionMatrixType PublicGetIndexToIndexProjectionMatrix(const
> unsigned int iProj);
>
> protected:
>
>     PublicBackProjectionImageFilter();
>
>     virtual ~PublicBackProjectionImageFilter() {}
>
>
>
> private:
>
>     PublicBackProjectionImageFilter(const Self&); //purposely not
> implemented
>
>     void operator=(const Self&);            //purposely not implemented
>
>
>
> };
>
>
>
> } // end namespace rtk
>
>
>
> #ifndef ITK_MANUAL_INSTANTIATION
>
> #include "rtkPublicBackProjectionImageFilter.txx"
>
> #endif
>
>
>
> #endif
>
>
>
>
>
>
>
> rtkPublicBackProjectionImageFilter.txx
>
>
>
> /*=========================================================================
>
> *
>
> *  Copyright RTK Consortium
>
> *
>
> *  Licensed under the Apache License, Version 2.0 (the "License");
>
> *  you may not use this file except in compliance with the License.
>
> *  You may obtain a copy of the License at
>
> *
>
> *         http://www.apache.org/licenses/LICENSE-2.0.txt
>
> *
>
> *  Unless required by applicable law or agreed to in writing, software
>
> *  distributed under the License is distributed on an "AS IS" BASIS,
>
> *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
>
> *  See the License for the specific language governing permissions and
>
> *  limitations under the License.
>
> *
>
> *=========================================================================*/
>
>
>
> #ifndef __rtkPublicBackProjectionImageFilter_txx
>
> #define __rtkPublicBackProjectionImageFilter_txx
>
>
>
> #include "rtkPublicBackProjectionImageFilter.h"
>
>
>
> namespace rtk
>
> {
>
>
>
> //template <class TInputImage, class TOutputImage>
>
> //PublicBackProjectionImageFilter<TInputImage,TOutputImage>
>
> //::PublicBackProjectionImageFilter()
>
> //{
>
> //}
>
>
>
> template <class TInputImage, class TOutputImage>
>
> typename
> PublicBackProjectionImageFilter<TInputImage,TOutputImage>::ProjectionImagePointer
>
> PublicBackProjectionImageFilter<TInputImage,TOutputImage>
>
> ::PublicGetProjection(const unsigned int iProj)
>
> {
>
>     return this->GetProjection(iProj);
>
> }
>
>
>
> template <class TInputImage, class TOutputImage>
>
> typename
> PublicBackProjectionImageFilter<TInputImage,TOutputImage>::ProjectionMatrixType
>
> PublicBackProjectionImageFilter<TInputImage,TOutputImage>
>
> ::PublicGetIndexToIndexProjectionMatrix(const unsigned int iProj)
>
> {
>
>     return this->GetIndexToIndexProjectionMatrix(iProj);
>
> }
>
>
>
> } // end namespace rtk
>
>
>
> #endif
>
>
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