main.cpp Example File

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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.
  **
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  ** the Free Software Foundation and appearing in the file LICENSE.GPL3
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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();
  }