// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2020.
//
// This software is released under a three-clause BSD license:
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//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
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//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
// For a full list of authors, refer to the file AUTHORS.
// --------------------------------------------------------------------------
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// $Maintainer: Timo Sachsenberg $
// $Authors: $
// --------------------------------------------------------------------------


#pragma once

#include <OpenMS/TRANSFORMATIONS/FEATUREFINDER/InterpolationModel.h>
#include <OpenMS/MATH/STATISTICS/BasicStatistics.h>

namespace OpenMS
{
  /**
      @brief Normal distribution approximated using linear interpolation

      @htmlinclude OpenMS_GaussModel.parameters
  */
  class OPENMS_DLLAPI GaussModel :
    public InterpolationModel
  {

public:
    typedef InterpolationModel::CoordinateType CoordinateType;
    typedef Math::BasicStatistics<CoordinateType> BasicStatistics;
    typedef InterpolationModel InterpolationModel;

    /// Default constructor
    GaussModel();

    /// copy constructor
    GaussModel(const GaussModel & source);

    /// destructor
    ~GaussModel() override;

    /// assignment operator
    virtual GaussModel & operator=(const GaussModel & source);

    /// create new GaussModel object (needed by Factory)
    static BaseModel<1> * create()
    {
      return new GaussModel();
    }

    /// name of the model (needed by Factory)
    static const String getProductName()
    {
      return "GaussModel";
    }

    /** @brief set the offset of the model

        The whole model will be shifted to the new offset without being computing all over.
        and without any discrepancy.
    */
    void setOffset(CoordinateType offset) override;

    /// set sample/supporting points of interpolation
    void setSamples() override;

    /// get the center of the Gaussian model i.e. the position of the maximum
    CoordinateType getCenter() const override;

protected:
    CoordinateType  min_;
    CoordinateType  max_;
    BasicStatistics statistics_;

    void updateMembers_() override;
  };
}

