main.cpp Example File

polarchart/main.cpp
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 #include "chartview.h"
 #include <QtWidgets/QApplication>
 #include <QtWidgets/QMainWindow>
 #include <QtCharts/QScatterSeries>
 #include <QtCharts/QLineSeries>
 #include <QtCharts/QSplineSeries>
 #include <QtCharts/QAreaSeries>
 #include <QtCharts/QValueAxis>
 #include <QtCharts/QPolarChart>
 #include <QtCore/QDebug>

 QT_CHARTS_USE_NAMESPACE

 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);

     const qreal angularMin = -100;
     const qreal angularMax = 100;

     const qreal radialMin = -100;
     const qreal radialMax = 100;

     QScatterSeries *series1 = new QScatterSeries();
     series1->setName("scatter");
     for (int i = angularMin; i <= angularMax; i += 10)
         series1->append(i, (i / radialMax) * radialMax + 8.0);

     QSplineSeries *series2 = new QSplineSeries();
     series2->setName("spline");
     for (int i = angularMin; i <= angularMax; i += 10)
         series2->append(i, (i / radialMax) * radialMax);

     QLineSeries *series3 = new QLineSeries();
     series3->setName("star outer");
     qreal ad = (angularMax - angularMin) / 8;
     qreal rd = (radialMax - radialMin) / 3 * 1.3;
     series3->append(angularMin, radialMax);
     series3->append(angularMin + ad*1, radialMin + rd);
     series3->append(angularMin + ad*2, radialMax);
     series3->append(angularMin + ad*3, radialMin + rd);
     series3->append(angularMin + ad*4, radialMax);
     series3->append(angularMin + ad*5, radialMin + rd);
     series3->append(angularMin + ad*6, radialMax);
     series3->append(angularMin + ad*7, radialMin + rd);
     series3->append(angularMin + ad*8, radialMax);

     QLineSeries *series4 = new QLineSeries();
     series4->setName("star inner");
     ad = (angularMax - angularMin) / 8;
     rd = (radialMax - radialMin) / 3;
     series4->append(angularMin, radialMax);
     series4->append(angularMin + ad*1, radialMin + rd);
     series4->append(angularMin + ad*2, radialMax);
     series4->append(angularMin + ad*3, radialMin + rd);
     series4->append(angularMin + ad*4, radialMax);
     series4->append(angularMin + ad*5, radialMin + rd);
     series4->append(angularMin + ad*6, radialMax);
     series4->append(angularMin + ad*7, radialMin + rd);
     series4->append(angularMin + ad*8, radialMax);

     QAreaSeries *series5 = new QAreaSeries();
     series5->setName("star area");
     series5->setUpperSeries(series3);
     series5->setLowerSeries(series4);
     series5->setOpacity(0.5);

     QPolarChart *chart = new QPolarChart();
     chart->addSeries(series1);
     chart->addSeries(series2);
     chart->addSeries(series3);
     chart->addSeries(series4);
     chart->addSeries(series5);

     chart->setTitle("Use arrow keys to scroll, +/- to zoom, and space to switch chart type.");

     QValueAxis *angularAxis = new QValueAxis();
     angularAxis->setTickCount(9); // First and last ticks are co-located on 0/360 angle.
     angularAxis->setLabelFormat("%.1f");
     angularAxis->setShadesVisible(true);
     angularAxis->setShadesBrush(QBrush(QColor(249, 249, 255)));
     chart->addAxis(angularAxis, QPolarChart::PolarOrientationAngular);

     QValueAxis *radialAxis = new QValueAxis();
     radialAxis->setTickCount(9);
     radialAxis->setLabelFormat("%d");
     chart->addAxis(radialAxis, QPolarChart::PolarOrientationRadial);

     series1->attachAxis(radialAxis);
     series1->attachAxis(angularAxis);
     series2->attachAxis(radialAxis);
     series2->attachAxis(angularAxis);
     series3->attachAxis(radialAxis);
     series3->attachAxis(angularAxis);
     series4->attachAxis(radialAxis);
     series4->attachAxis(angularAxis);
     series5->attachAxis(radialAxis);
     series5->attachAxis(angularAxis);

     radialAxis->setRange(radialMin, radialMax);
     angularAxis->setRange(angularMin, angularMax);

     ChartView *chartView = new ChartView();
     chartView->setChart(chart);
     chartView->setRenderHint(QPainter::Antialiasing);

     QMainWindow window;
     window.setCentralWidget(chartView);
     window.resize(800, 600);
     window.show();

     return a.exec();
 }