itkConformalFlatteningMeshFilter.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
 *
 *  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 itkConformalFlatteningMeshFilter_h
#define itkConformalFlatteningMeshFilter_h

#include "itkMesh.h"
#include "itkMeshToMeshFilter.h"

// vnl headers
#include "itkMath.h"
#include "vnl/vnl_sparse_matrix.h"


namespace itk
{
template< typename TInputMesh, typename TOutputMesh >
class ITK_TEMPLATE_EXPORT ConformalFlatteningMeshFilter:
  public MeshToMeshFilter< TInputMesh, TOutputMesh >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(ConformalFlatteningMeshFilter);

  using Self = ConformalFlatteningMeshFilter;

  using InputMeshType = TInputMesh;
  using OutputMeshType = TOutputMesh;

  using Superclass = MeshToMeshFilter< TInputMesh, TOutputMesh >;

  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  using InputMeshConstPointer = typename InputMeshType::ConstPointer;
  using OutputMeshPointer = typename OutputMeshType::Pointer;
  using InputPointType = typename InputMeshType::PointType;
  using OutputPointType = typename OutputMeshType::PointType;

  //using CoordRepType = typename TInputMesh::CoordRepType;
  using CoordRepType = double;

  itkNewMacro(Self);

  itkTypeMacro(ConformalFlatteningMeshFilter, MeshToMeshFilter);

  static constexpr unsigned int InputPointDimension = TInputMesh::PointDimension;
  static constexpr unsigned int OutputPointDimension = TOutputMesh::PointDimension;

  using PointsContainer = typename InputMeshType::PointsContainer;
  using CellsContainer = typename InputMeshType::CellsContainer;
  using PointIdentifier = typename InputMeshType::PointIdentifier;
  using CellIdentifier = typename InputMeshType::CellIdentifier;
  using PointIterator = typename PointsContainer::ConstIterator;
  using CellIterator = typename CellsContainer::ConstIterator;
  using CellType = typename InputMeshType::CellType;
  using PointIdIterator = typename CellType::PointIdIterator;
  using CellAutoPointer = typename CellType::CellAutoPointer;

  void SetPolarCellIdentifier(CellIdentifier cellId);

  void SetScale(double);

  void MapToSphere();

  void MapToPlane();

protected:
  ConformalFlatteningMeshFilter();
  ~ConformalFlatteningMeshFilter() override {}
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void GenerateData() override;

private:
  using VectorCoordType = vnl_vector< CoordRepType >;
  using SparseMatrixCoordType = vnl_sparse_matrix< CoordRepType >;

  unsigned int m_PolarCellIdentifier;

  bool m_MapToSphere;

  double m_MapScale;
};
} // end namespace itk

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

#endif