DataSymmetriesForDensels.h

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//
//
/*
    Copyright (C) 2001- 2007, Hammersmith Imanet Ltd
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0

    See STIR/LICENSE.txt for details
*/
#ifndef __stir_recon_buildblock_DataSymmetriesForDensels_H__
#define __stir_recon_buildblock_DataSymmetriesForDensels_H__

#include "stir/DataSymmetriesForViewSegmentNumbers.h"
#include "stir/Densel.h"
#include <vector>
#include <memory>
#include "stir/unique_ptr.h"
#include "stir/Coordinate2D.h"

START_NAMESPACE_STIR

// class Densel;
class SymmetryOperation;

#if 0
class DenselIndexRange;
#endif

class DataSymmetriesForDensels
{
public:
  DataSymmetriesForDensels();

  virtual ~DataSymmetriesForDensels(){};

  virtual DataSymmetriesForDensels* clone() const = 0;

  bool operator==(const DataSymmetriesForDensels&) const;

  bool operator!=(const DataSymmetriesForDensels&) const;

#if 0
  TODO!
  virtual DenselIndexRange
    get_basic_densel_index_range() const = 0;
#endif


  // next return value could be a RelatedDensels ???
  virtual void get_related_densels(std::vector<Densel>&, const Densel& b) const = 0;

#if 0

  virtual void
    get_related_densels(std::vector<Densel>&, const Densel& b,
                      const int min_axial_pos_num, const int max_axial_pos_num) const;
#endif

  virtual int num_related_densels(const Densel& b) const;

  virtual unique_ptr<SymmetryOperation> find_symmetry_operation_from_basic_densel(Densel&) const = 0;

  virtual bool find_basic_densel(Densel& b) const;

protected:
  typedef DataSymmetriesForDensels root_type;

  virtual bool blindly_equals(const root_type* const) const = 0;
};

END_NAMESPACE_STIR

//#include "stir/recon_buildblock/DataSymmetriesForDensels.inl"

#endif