main.cpp 范例文件

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(); }