/********************************************************************************
* FaceTrackNoIR		This program is a private project of some enthusiastic		*
*					gamers from Holland, who don't like to pay much for			*
*					head-tracking.												*
*																				*
* Copyright (C) 2012	Wim Vriend (Developing)									*
*						Ron Hendriks (Researching and Testing)					*
*																				*
* Homepage																		*
*																				*
* This program is free software; you can redistribute it and/or modify it		*
* under the terms of the GNU General Public License as published by the			*
* Free Software Foundation; either version 3 of the License, or (at your		*
* option) any later version.													*
*																				*
* This program is distributed in the hope that it will be useful, but			*
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY	*
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for	*
* more details.																	*
*																				*
* You should have received a copy of the GNU General Public License along		*
* with this program; if not, see <http://www.gnu.org/licenses/>.				*
*																				*
********************************************************************************/
#pragma once
#ifndef INCLUDED_FTN_FILTER_H
#define INCLUDED_FTN_FILTER_H

#include "ftnoir_filter_base/ftnoir_filter_base.h"
#include "facetracknoir/global-settings.h"
#include "ui_ftnoir_ewma_filtercontrols.h"
#include <QWidget>

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// EWMA Filter: Exponentially Weighted Moving Average filter with dynamic smoothing parameter
//
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class FTNoIR_Filter : public IFilter
{
public:
    FTNoIR_Filter();
    ~FTNoIR_Filter();
    void Initialize() {}

    void FilterHeadPoseData(double *current_camera_position,
                            double *target_camera_position,
                            double *new_camera_position,
                            double *last_post_filter);

private:
    void loadSettings();  // Load the settings from the INI-file
    double newHeadPose;   // Structure with new headpose

    bool first_run;
    double alpha_smoothing;
    double alpha[6];

    double kMinSmoothing;
    double kMaxSmoothing;
    double kSmoothingScaleCurve;
};

//*******************************************************************************************************
// FaceTrackNoIR Filter Settings-dialog.
//*******************************************************************************************************

// Widget that has controls for FTNoIR protocol filter-settings.
class FilterControls: public QWidget, public IFilterDialog
{
    Q_OBJECT
public:
    explicit FilterControls();
    virtual ~FilterControls();
    void showEvent ( QShowEvent * event );
    void Initialize(QWidget *parent, IFilter* ptr);

private:
    Ui::UICFilterControls ui;
    void loadSettings();
    void save();

    /** helper **/
    bool settingsDirty;

    IFilter* pFilter;  // If the filter was active when the dialog was opened, this will hold a pointer to the Filter instance

private slots:
    void doOK();
    void doCancel();
    void settingChanged() { settingsDirty = true; };
    void settingChanged( int ) { settingsDirty = true; };
};

//*******************************************************************************************************
// FaceTrackNoIR Filter DLL. Functions used to get general info on the Filter
//*******************************************************************************************************
class FTNoIR_FilterDll : public Metadata
{
public:
    FTNoIR_FilterDll();
    ~FTNoIR_FilterDll();
    void getFullName(QString *strToBeFilled) { *strToBeFilled = QString("EWMA Filter Mk2"); }
    void getShortName(QString *strToBeFilled) { *strToBeFilled = QString("EWMA"); }
    void getDescription(QString *strToBeFilled) { *strToBeFilled = QString("Exponentially Weighted Moving Average filter with dynamic smoothing parameter"); }
    void getIcon(QIcon *icon){ *icon = QIcon(":/images/filter-16.png");	}
};

#endif						//INCLUDED_FTN_FILTER_H
//END