text: /*=========================================================================
  *
  *  Copyright Insight Software 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 sitkAffineTransform_h
  #define sitkAffineTransform_h
  
  #include "sitkCommon.h"
  #include "sitkTransform.h"
  
  namespace itk
  {
  namespace simple
  {
  
  /** \class AffineTransform
   * \brief An affine transformation about a fixed center with
   * translation for a 2D or 3D coordinate.
   *
   * \sa itk::AffineTransform
   */
  class SITKCommon_EXPORT AffineTransform
    : public Transform
  {
  public:
    typedef AffineTransform Self;
    typedef Transform       Superclass;
  
    explicit AffineTransform(unsigned int dimensions);
  
    AffineTransform( const AffineTransform & );
  
    explicit AffineTransform( const Transform & );
  
    AffineTransform( const std::vector< double> &matrix,
                     const std::vector< double> &translation,
                     const std::vector< double> &fixedCenter=std::vector< double >(3, 0.0));
  
  
    AffineTransform &operator=( const AffineTransform & );
  
    /** Name of this class */
    std::string GetName() const { return std::string ("AffineTransform"); }
  
    /** parameters */
    std::vector<double> GetTranslation( ) const;
    SITK_RETURN_SELF_TYPE_HEADER SetTranslation( const std::vector<double>& translation);
  
    SITK_RETURN_SELF_TYPE_HEADER SetMatrix( const std::vector<double> &matrix);
    std::vector<double> GetMatrix() const;
  
    /** fixed parameter */
    SITK_RETURN_SELF_TYPE_HEADER SetCenter(const std::vector<double> &params);
    std::vector<double> GetCenter( ) const;
  
    /** additional methods */
    SITK_RETURN_SELF_TYPE_HEADER Scale(const std::vector<double> & factor, bool pre=false);
    SITK_RETURN_SELF_TYPE_HEADER Scale(double factor, bool pre=false);
  
    SITK_RETURN_SELF_TYPE_HEADER Shear(int axis1, int axis2, double coef, bool pre=false);
  
    SITK_RETURN_SELF_TYPE_HEADER Translate(const std::vector<double> &offset, bool pre=false);
  
    SITK_RETURN_SELF_TYPE_HEADER Rotate(int axis1, int axis2, double angle, bool pre=false);
  
  protected:
  
    virtual void SetPimpleTransform( PimpleTransformBase *pimpleTransform );
  
  private:
  
    using Superclass::AddTransform;
  
    struct MyVisitor
    {
      itk::TransformBase *transform;
      AffineTransform *that;
      template< typename TransformType >
      void operator() ( void ) const
        {
          TransformType *t = dynamic_cast<TransformType*>(transform);
          if (t && (typeid(*t) == typeid(TransformType)))
            {
            that->InternalInitialization<TransformType>(t);
            }
        }
    };
  
    void InternalInitialization(itk::TransformBase *transform);
  
    template <typename TransformType>
      void InternalInitialization(TransformType *transform);
  
  
    nsstd::function<void(const std::vector<double>&)> m_pfSetCenter;
    nsstd::function<std::vector<double>()> m_pfGetCenter;
    nsstd::function<void(const std::vector<double>&)> m_pfSetMatrix;
    nsstd::function<std::vector<double>()> m_pfGetMatrix;
    nsstd::function<void(const std::vector<double>&)> m_pfSetTranslation;
    nsstd::function<std::vector<double>()> m_pfGetTranslation;
  
    nsstd::function<void(const std::vector<double> &, bool)> m_pfScale1;
    nsstd::function<void(double, bool)> m_pfScale2;
    nsstd::function<void(int, int, double, bool)> m_pfShear;
    nsstd::function<void(const std::vector<double> &, bool)> m_pfTranslate;
    nsstd::function<void(int, int, double, bool)> m_pfRotate;
  
  };
  
  }
  }
  
  #endif // sitkAffineTransform_h
  