ZoomOptions.h

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/*
    Copyright (C) 2018-2019, University College London
    This file is part of STIR.
 
    SPDX-License-Identifier: Apache-2.0
 
    See STIR/LICENSE.txt for details
*/
 
#ifndef __stir_ZOOMOPTIONS_H__
#define __stir_ZOOMOPTIONS_H__

 
#include "stir/error.h"
 
START_NAMESPACE_STIR

 
class ZoomOptions
{
public:
  enum Scaling
  {
    preserve_sum,
    preserve_values,
    preserve_projections
  };

  ZoomOptions(const Scaling v = preserve_sum)
      : v(v)
  {
    // need to catch out-of-range in case somebody did a static_cast from an int (e.g. SWIG does)
    if ((v < preserve_sum) || (v > preserve_projections))
      error("ZoomOptions initialised with out-of-range value");
  }
  Scaling get_scaling_option() const { return v; }
 
private:
  Scaling v;
};
 
END_NAMESPACE_STIR
 
#endif // ZOOMOPTIONS_H