//=============================================================================================================
/**
 * @file     imagcoherence.h
 * @author   Daniel Strohmeier <Daniel.Strohmeier@tu-ilmenau.de>;
 *           Lorenz Esch <lesch@mgh.harvard.edu>
 * @since    0.1.0
 * @date     April, 2018
 *
 * @section  LICENSE
 *
 * Copyright (C) 2018, Daniel Strohmeier, Lorenz Esch. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that
 * the following conditions are met:
 *     * Redistributions of source code must retain the above copyright 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.
 *     * Neither the name of MNE-CPP authors nor the names of its contributors may be used
 *       to endorse or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @note Notes:
 * - Some of this code was adapted from mne-python (https://martinos.org/mne) with permission from Alexandre Gramfort.
 * - QtConcurrent can be used to speed up computation.
 *
 * @brief     Imaginary coherence class declaration.
 *
 */

#ifndef IMAGCOHERENCE_H
#define IMAGCOHERENCE_H

//=============================================================================================================
// INCLUDES
//=============================================================================================================

#include "../connectivity_global.h"

#include "abstractmetric.h"
#include "../connectivitysettings.h"

//=============================================================================================================
// QT INCLUDES
//=============================================================================================================

#include <QSharedPointer>

//=============================================================================================================
// EIGEN INCLUDES
//=============================================================================================================

#include <Eigen/Core>

//=============================================================================================================
// FORWARD DECLARATIONS
//=============================================================================================================

//=============================================================================================================
// DEFINE NAMESPACE CONNECTIVITYLIB
//=============================================================================================================

namespace CONNECTIVITYLIB {

//=============================================================================================================
// CONNECTIVITYLIB FORWARD DECLARATIONS
//=============================================================================================================

class Network;

//=============================================================================================================
/**
 * This class computes the imaginary coherence connectivity metric.
 *
 * @brief This class computes the imaginary coherence connectivity metric.
 */
class CONNECTIVITYSHARED_EXPORT ImagCoherence : public AbstractMetric
{

public:
    typedef QSharedPointer<ImagCoherence> SPtr;            /**< Shared pointer type for ImagCoherence. */
    typedef QSharedPointer<const ImagCoherence> ConstSPtr; /**< Const shared pointer type for ImagCoherence. */

    //=========================================================================================================
    /**
     * Constructs a ImagCoherence object.
     */
    explicit ImagCoherence();

    //=========================================================================================================
    /**
     * Calculates the imaginary coherence between the rows of the data matrix.
     *
     * @param[in] connectivitySettings   The input data and parameters.
     *
     * @return                   The connectivity information in form of a network structure.
     */
    static Network calculate(ConnectivitySettings &connectivitySettings);
};

//=============================================================================================================
// INLINE DEFINITIONS
//=============================================================================================================
} // namespace CONNECTIVITYLIB

#endif // IMAGCOHERENCE_H
