<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>main.cpp Example File | Qt Charts 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-polarchart-example.html">Polar Chart Example</a></td><td >main.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">main.cpp Example File</h1> <span class="subtitle">polarchart/main.cpp</span> <!-- $$$polarchart/main.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** 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. ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "chartview.h"</span> <span class="preprocessor">#include <QtWidgets/QApplication></span> <span class="preprocessor">#include <QtWidgets/QMainWindow></span> <span class="preprocessor">#include <QtCharts/QScatterSeries></span> <span class="preprocessor">#include <QtCharts/QLineSeries></span> <span class="preprocessor">#include <QtCharts/QSplineSeries></span> <span class="preprocessor">#include <QtCharts/QAreaSeries></span> <span class="preprocessor">#include <QtCharts/QValueAxis></span> <span class="preprocessor">#include <QtCharts/QPolarChart></span> <span class="preprocessor">#include <QtCore/QDebug></span> QT_CHARTS_USE_NAMESPACE <span class="type">int</span> main(<span class="type">int</span> argc<span class="operator">,</span> <span class="type">char</span> <span class="operator">*</span>argv<span class="operator">[</span><span class="operator">]</span>) { <span class="type">QApplication</span> a(argc<span class="operator">,</span> argv); <span class="keyword">const</span> <span class="type">qreal</span> angularMin <span class="operator">=</span> <span class="operator">-</span><span class="number">100</span>; <span class="keyword">const</span> <span class="type">qreal</span> angularMax <span class="operator">=</span> <span class="number">100</span>; <span class="keyword">const</span> <span class="type">qreal</span> radialMin <span class="operator">=</span> <span class="operator">-</span><span class="number">100</span>; <span class="keyword">const</span> <span class="type">qreal</span> radialMax <span class="operator">=</span> <span class="number">100</span>; <span class="type"><a href="qscatterseries.html">QScatterSeries</a></span> <span class="operator">*</span>series1 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qscatterseries.html">QScatterSeries</a></span>(); series1<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"scatter"</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> angularMin; i <span class="operator"><</span><span class="operator">=</span> angularMax; i <span class="operator">+</span><span class="operator">=</span> <span class="number">10</span>) series1<span class="operator">-</span><span class="operator">></span>append(i<span class="operator">,</span> (i <span class="operator">/</span> radialMax) <span class="operator">*</span> radialMax <span class="operator">+</span> <span class="number">8.0</span>); <span class="type"><a href="qsplineseries.html">QSplineSeries</a></span> <span class="operator">*</span>series2 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsplineseries.html">QSplineSeries</a></span>(); series2<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"spline"</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> angularMin; i <span class="operator"><</span><span class="operator">=</span> angularMax; i <span class="operator">+</span><span class="operator">=</span> <span class="number">10</span>) series2<span class="operator">-</span><span class="operator">></span>append(i<span class="operator">,</span> (i <span class="operator">/</span> radialMax) <span class="operator">*</span> radialMax); <span class="type"><a href="qlineseries.html">QLineSeries</a></span> <span class="operator">*</span>series3 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineseries.html">QLineSeries</a></span>(); series3<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"star outer"</span>); <span class="type">qreal</span> ad <span class="operator">=</span> (angularMax <span class="operator">-</span> angularMin) <span class="operator">/</span> <span class="number">8</span>; <span class="type">qreal</span> rd <span class="operator">=</span> (radialMax <span class="operator">-</span> radialMin) <span class="operator">/</span> <span class="number">3</span> <span class="operator">*</span> <span class="number">1.3</span>; series3<span class="operator">-</span><span class="operator">></span>append(angularMin<span class="operator">,</span> radialMax); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">1</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">2</span><span class="operator">,</span> radialMax); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">3</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">4</span><span class="operator">,</span> radialMax); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">5</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">6</span><span class="operator">,</span> radialMax); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">7</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series3<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">8</span><span class="operator">,</span> radialMax); <span class="type"><a href="qlineseries.html">QLineSeries</a></span> <span class="operator">*</span>series4 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineseries.html">QLineSeries</a></span>(); series4<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"star inner"</span>); ad <span class="operator">=</span> (angularMax <span class="operator">-</span> angularMin) <span class="operator">/</span> <span class="number">8</span>; rd <span class="operator">=</span> (radialMax <span class="operator">-</span> radialMin) <span class="operator">/</span> <span class="number">3</span>; series4<span class="operator">-</span><span class="operator">></span>append(angularMin<span class="operator">,</span> radialMax); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">1</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">2</span><span class="operator">,</span> radialMax); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">3</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">4</span><span class="operator">,</span> radialMax); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">5</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">6</span><span class="operator">,</span> radialMax); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">7</span><span class="operator">,</span> radialMin <span class="operator">+</span> rd); series4<span class="operator">-</span><span class="operator">></span>append(angularMin <span class="operator">+</span> ad<span class="operator">*</span><span class="number">8</span><span class="operator">,</span> radialMax); <span class="type"><a href="qareaseries.html">QAreaSeries</a></span> <span class="operator">*</span>series5 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qareaseries.html">QAreaSeries</a></span>(); series5<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"star area"</span>); series5<span class="operator">-</span><span class="operator">></span>setUpperSeries(series3); series5<span class="operator">-</span><span class="operator">></span>setLowerSeries(series4); series5<span class="operator">-</span><span class="operator">></span>setOpacity(<span class="number">0.5</span>); <span class="type"><a href="qpolarchart.html">QPolarChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpolarchart.html">QPolarChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>addSeries(series1); chart<span class="operator">-</span><span class="operator">></span>addSeries(series2); chart<span class="operator">-</span><span class="operator">></span>addSeries(series3); chart<span class="operator">-</span><span class="operator">></span>addSeries(series4); chart<span class="operator">-</span><span class="operator">></span>addSeries(series5); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Use arrow keys to scroll, +/- to zoom, and space to switch chart type."</span>); <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>angularAxis <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span>(); angularAxis<span class="operator">-</span><span class="operator">></span>setTickCount(<span class="number">9</span>); <span class="comment">// First and last ticks are co-located on 0/360 angle.</span> angularAxis<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f"</span>); angularAxis<span class="operator">-</span><span class="operator">></span>setShadesVisible(<span class="keyword">true</span>); angularAxis<span class="operator">-</span><span class="operator">></span>setShadesBrush(<span class="type">QBrush</span>(<span class="type">QColor</span>(<span class="number">249</span><span class="operator">,</span> <span class="number">249</span><span class="operator">,</span> <span class="number">255</span>))); chart<span class="operator">-</span><span class="operator">></span>addAxis(angularAxis<span class="operator">,</span> <span class="type"><a href="qpolarchart.html">QPolarChart</a></span><span class="operator">::</span>PolarOrientationAngular); <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>radialAxis <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span>(); radialAxis<span class="operator">-</span><span class="operator">></span>setTickCount(<span class="number">9</span>); radialAxis<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%d"</span>); chart<span class="operator">-</span><span class="operator">></span>addAxis(radialAxis<span class="operator">,</span> <span class="type"><a href="qpolarchart.html">QPolarChart</a></span><span class="operator">::</span>PolarOrientationRadial); series1<span class="operator">-</span><span class="operator">></span>attachAxis(radialAxis); series1<span class="operator">-</span><span class="operator">></span>attachAxis(angularAxis); series2<span class="operator">-</span><span class="operator">></span>attachAxis(radialAxis); series2<span class="operator">-</span><span class="operator">></span>attachAxis(angularAxis); series3<span class="operator">-</span><span class="operator">></span>attachAxis(radialAxis); series3<span class="operator">-</span><span class="operator">></span>attachAxis(angularAxis); series4<span class="operator">-</span><span class="operator">></span>attachAxis(radialAxis); series4<span class="operator">-</span><span class="operator">></span>attachAxis(angularAxis); series5<span class="operator">-</span><span class="operator">></span>attachAxis(radialAxis); series5<span class="operator">-</span><span class="operator">></span>attachAxis(angularAxis); radialAxis<span class="operator">-</span><span class="operator">></span>setRange(radialMin<span class="operator">,</span> radialMax); angularAxis<span class="operator">-</span><span class="operator">></span>setRange(angularMin<span class="operator">,</span> angularMax); ChartView <span class="operator">*</span>chartView <span class="operator">=</span> <span class="keyword">new</span> ChartView(); chartView<span class="operator">-</span><span class="operator">></span>setChart(chart); chartView<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type">QPainter</span><span class="operator">::</span>Antialiasing); <span class="type">QMainWindow</span> window; window<span class="operator">.</span>setCentralWidget(chartView); window<span class="operator">.</span>resize(<span class="number">800</span><span class="operator">,</span> <span class="number">600</span>); window<span class="operator">.</span>show(); <span class="keyword">return</span> a<span class="operator">.</span>exec(); } </pre> </div> <!-- @@@polarchart/main.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>