/*
 Copyright © 2017 Hasan Yavuz Özderya

 This file is part of serialplot.

 serialplot 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.

 serialplot 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 serialplot. If not, see <http://www.gnu.org/licenses/>.
*/

#include <math.h>

#include "demoreader.h"

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif

DemoReader::DemoReader(QIODevice* device, ChannelManager* channelMan,
 DataRecorder* recorder, QObject* parent) :
 AbstractReader(device, channelMan, recorder, parent)
{
 paused = false;
 _numOfChannels = 1;
 count = 0;
 timer.setInterval(100);
 QObject::connect(&timer, &QTimer::timeout,
 this, &DemoReader::demoTimerTimeout);
}

QWidget* DemoReader::settingsWidget()
{
 return NULL;
}

void DemoReader::enable(bool enabled)
{
 if (enabled)
 {
 timer.start();
 }
 else
 {
 timer.stop();
 }
}

unsigned DemoReader::numOfChannels()
{
 return _numOfChannels;
}

void DemoReader::setNumOfChannels(unsigned value)
{
 _numOfChannels = value;
}

void DemoReader::pause(bool enabled)
{
 paused = enabled;
}

void DemoReader::demoTimerTimeout()
{
 const double period = 100;
 count++;
 if (count >= 100) count = 0;

 if (!paused)
 {
 double* samples = new double[_numOfChannels];
 for (unsigned ci = 0; ci < _numOfChannels; ci++)
 {
 // we are calculating the fourier components of square wave
 samples[ci] = 4*sin(2*M_PI*double((ci+1)*count)/period)/((2*(ci+1))*M_PI);
 }
 addData(samples, _numOfChannels);
 delete[] samples;
 }
}