sitkScaleTransform.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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 sitkScaleTransform_h
#define sitkScaleTransform_h
 
#include "sitkCommon.h"
#include "sitkTransform.h"
 
namespace itk::simple
{

class SITKCommon_EXPORT ScaleTransform : public Transform
{
public:
  using Self = ScaleTransform;
  using Superclass = Transform;
 
  ~ScaleTransform() override;
 
  explicit ScaleTransform(unsigned int dimensions, const std::vector<double> & scale = std::vector<double>(3, 1.0));
 
  ScaleTransform(const ScaleTransform &);
 
  explicit ScaleTransform(const Transform &);

  std::string
  GetName() const override
  {
    return std::string("ScaleTransform");
  }
 
  ScaleTransform &
  operator=(const ScaleTransform &);
 
 
  SITK_RETURN_SELF_TYPE_HEADER
  SetScale(const std::vector<double> & params);
  std::vector<double>
  GetScale() const;

  SITK_RETURN_SELF_TYPE_HEADER
  SetCenter(const std::vector<double> & params);
  std::vector<double>
  GetCenter() const;

  std::vector<double>
  GetMatrix() const;
 
protected:
  void
  SetPimpleTransform(std::unique_ptr<PimpleTransformBase> && pimpleTransform) override;
 
private:
  struct MyVisitor
  {
    itk::TransformBase * transform;
    ScaleTransform *     that;
    template <typename TransformType>
    void
    operator()() 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);
 
 
  std::function<void(std::vector<double>)> m_pfSetCenter;
  std::function<std::vector<double>()>     m_pfGetCenter;
  std::function<void(std::vector<double>)> m_pfSetScale;
  std::function<std::vector<double>()>     m_pfGetScale;
  std::function<std::vector<double>()>     m_pfGetMatrix;
};
 
} // namespace itk::simple
 
#endif // sitkScaleTransform_h