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chart.cpp
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chart.cpp
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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "chart.h"
#include "ui_mainwindow.h"
#include <QtCharts/QAbstractAxis>
#include <QtCharts/QLineSeries>
#include <QtCharts/QValueAxis>
#include <QtCore/QRandomGenerator>
#include <QtCore/QDebug>
Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags):
QChart(QChart::ChartTypeCartesian, parent, wFlags),
ch0(nullptr),
ch1(nullptr),
ch2(nullptr),
ch3(nullptr),
ch4(nullptr),
ch5(nullptr),
ch6(nullptr),
ch7(nullptr),
m_axisX(new QValueAxis()),
m_axisY(new QValueAxis()),
m_step(0),
m_x(0),
m_y0(0),
m_y1(0),
m_y2(0),
m_y3(0),
m_y4(0),
m_y5(0),
m_y6(0),
m_y7(0)
{
// Set chart to update every second
QObject::connect(&m_timer, &QTimer::timeout, this, &Chart::handleTimeout);
m_timer.setInterval(1000);
//Initialize members
ch0 = new QLineSeries(this);
chList[0] = ch0;
ch1 = new QLineSeries(this);
chList[1] = ch1;
ch2 = new QLineSeries(this);
chList[2] = ch2;
ch3 = new QLineSeries(this);
chList[3] = ch3;
ch4 = new QLineSeries(this);
chList[4] = ch4;
ch5 = new QLineSeries(this);
chList[5] = ch5;
ch6 = new QLineSeries(this);
chList[6] = ch6;
ch7 = new QLineSeries(this);
chList[7] = ch7;
y_valList[0] = m_y0;
y_valList[1] = m_y1;
y_valList[2] = m_y2;
y_valList[3] = m_y3;
y_valList[4] = m_y4;
y_valList[5] = m_y5;
y_valList[6] = m_y6;
y_valList[7] = m_y7;
QPen red(Qt::red);
QPen green(Qt::green);
QPen blue(Qt::blue);
QPen yellow(Qt::yellow);
QPen gray(Qt::gray);
QPen black(Qt::black);
QPen cyan(Qt::cyan);
QPen magenta(Qt::magenta);
QPen penList [] = {red, green, blue, yellow, gray, black, cyan, magenta};
addAxis(m_axisX,Qt::AlignBottom);
addAxis(m_axisY,Qt::AlignLeft);
for(int i = 0; i < 8; i++ ){
// Set name for each channel
std::ostringstream out;
out << "Ch " << i;
chList[i]->setName(out.str().c_str());
//Initialize the first data point
chList[i]->append(m_x, y_valList[i]);
// Set the line properties
penList[i].setWidth(3);
chList[i]->setPen(penList[i]);
// Add data series to the chart, attach to axes
addSeries(chList[i]);
chList[i]->attachAxis(m_axisX);
chList[i]->attachAxis(m_axisY);
}
m_axisX->setTickCount(5);
m_axisX->setRange(0, 60);
m_axisY->setRange(-1, 1);
m_timer.start();
}
Chart::~Chart()
{
}
void Chart::handleTimeout()
{
m_x++;
// Update each channel every second
for(int i = 0; i< 8; i++){
chList[i]->append(m_x,y_valList[i]);
extendAxis(m_x, y_valList[i], m_axisX, m_axisY);
}
}
void Chart::putData(const QByteArray &data){
// Take newest line of data from serial port as string
std::string dataStr = (std::string) data;
qInfo() << data;
std::string ADC[8];
// Parse string into fields
int begin = 0;
int end = 1;
int chStr = 0;
// Extract first 8 floats
for(int i = end; chStr < 8; i++){
if(data.size()-1 < i){
qInfo() << "Incomplete packet, discarding.";
return;
}
if(data[i] == ','){
end = i-1;
ADC[chStr].assign(dataStr, begin, i-begin);
//qInfo() << ADC[chStr].c_str();
begin = i+1;
chStr++;
continue;
}
}
convertToDouble(ADC ,y_valList);
// Extract IMET data
std::string iMet[10];
int iMetField = 0;
if( begin +1 > data.size()-1){
return;
}
if((chStr == 8) && (data[begin] == 'X') && (data[begin+1] == 'Q')){
for(int i = begin; iMetField < 10; i++){
if(data.size()-1 < i){
qInfo() << "Incomplete packet, discarding.";
return;
}
if(data[i] == ','){
end = i-1;
iMet[iMetField].assign(dataStr, begin, i-begin);
//qInfo() << iMet[iMetField].c_str();
begin = i+1;
iMetField++;
continue;
}
}
}
// convertiMet(iMet);
return;
}
// Rescale the plot as needed
void Chart::extendAxis(qreal xVal, qreal yVal, QValueAxis* xAxis, QValueAxis* yAxis){
if(yVal < yAxis->min() && yVal > -10){
yAxis->setMin(yVal);
}
else if ( yVal > yAxis->max() && yVal < 10) {
yAxis->setMax(yVal);
}
if(xVal > xAxis->max() -5){
xAxis->setMax(xAxis->max()+1);
}
}
// Convert strings into float for each channel
void Chart::convertToDouble(std::string* ADC_strings, qreal* y_valList ){
for(int i = 0; i < 8; i++){
try {
y_valList[i] = std::stod(ADC_strings[i],nullptr);
} catch (...) {
qInfo() << "Unable to convert transmitted value to floating point. Discarding message.";
return;
}
}
}
/* void
*/