itkRegionConstrainedSubsampler.h

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/*=========================================================================
 *
 *  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
 *
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 *  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 itkRegionConstrainedSubsampler_h
#define itkRegionConstrainedSubsampler_h

#include "itkSubsamplerBase.h"
#include "itkImageRegion.h"

namespace itk {
namespace Statistics {
template < typename TSample, typename TRegion >
class ITK_TEMPLATE_EXPORT RegionConstrainedSubsampler : public SubsamplerBase<TSample>
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(RegionConstrainedSubsampler);

  using Self = RegionConstrainedSubsampler<TSample, TRegion>;
  using Superclass = SubsamplerBase<TSample>;
  using Baseclass = typename Superclass::Baseclass;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkTypeMacro(RegionConstrainedSubsampler, SubsamplerBase);

  using SampleType = TSample;
  using SampleConstPointer = typename SampleType::ConstPointer;
  using MeasurementVectorType = typename TSample::MeasurementVectorType;
  using InstanceIdentifier = typename TSample::InstanceIdentifier;

  using SubsampleType = Subsample<TSample>;
  using SubsamplePointer = typename SubsampleType::Pointer;
  using SubsampleConstIterator = typename SubsampleType::ConstIterator;
  using InstanceIdentifierHolder = typename SubsampleType::InstanceIdentifierHolder;

  using RegionType = TRegion;
  using IndexType = typename RegionType::IndexType;
  using IndexValueType = typename IndexType::IndexValueType;
  using SizeType = typename RegionType::SizeType;

  void SetSampleRegion(const RegionType& region);

  itkGetConstReferenceMacro( SampleRegion, RegionType );

  itkGetConstReferenceMacro(SampleRegionInitialized, bool);

  void SetRegionConstraint(const RegionType& region);

  itkGetConstReferenceMacro( RegionConstraint, RegionType );

  itkGetConstReferenceMacro(RegionConstraintInitialized, bool);

  void Search(const InstanceIdentifier& query,
                      SubsamplePointer& results) override = 0;

protected:
  typename LightObject::Pointer InternalClone() const override;

  RegionConstrainedSubsampler();
  ~RegionConstrainedSubsampler() override = default;

  void PrintSelf(std::ostream& os, Indent indent) const override;

  RegionType m_RegionConstraint;
  bool       m_RegionConstraintInitialized;
  RegionType m_SampleRegion;
  bool       m_SampleRegionInitialized;
}; // end of class RegionConstrainedSubsampler

} // end of namespace Statistics
} // end of namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkRegionConstrainedSubsampler.hxx"
#endif

#endif