##// END OF EJS Templates
Fixed a bug in dynamic creation of area series
Fixed a bug in dynamic creation of area series

File last commit:

r1949:39b74020ad7b
r2114:6cd0efe52042
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wavechart.cpp
69 lines | 1.8 KiB | text/x-c | CppLexer
Michal Klocek
minor. add missing license files
r875 /****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
Michal Klocek
Adds test/wavechart
r867 #include "wavechart.h"
#include <cmath>
QTCOMMERCIALCHART_USE_NAMESPACE
#define PI 3.14159265358979
static const int numPoints =100;
WaveChart::WaveChart(QChart* chart, QWidget* parent) :
QChartView(chart, parent),
m_series(new QLineSeries()),
m_wave(0),
m_step(2 * PI / numPoints)
{
QPen blue(Qt::blue);
blue.setWidth(3);
m_series->setPen(blue);
Marek Rosa
removed legend from wavechart and added axes to it
r1622 chart->legend()->setVisible(false);
Michal Klocek
Adds test/wavechart
r867 QTime now = QTime::currentTime();
qsrand((uint) now.msec());
int fluctuate = 100;
for (qreal x = 0; x <= 2 * PI; x += m_step) {
m_series->append(x, fabs(sin(x) * fluctuate));
}
chart->addSeries(m_series);
Marek Rosa
removed legend from wavechart and added axes to it
r1622 chart->createDefaultAxes();
Michal Klocek
Adds test/wavechart
r867
QObject::connect(&m_timer, SIGNAL(timeout()), this, SLOT(update()));
m_timer.setInterval(5000);
m_timer.start();
}
void WaveChart::update()
{
int fluctuate;
Michal Klocek
Fixes and improvments to series API...
r1057 const QList<QPointF>& points = m_series->points();
Michal Klocek
Adds test/wavechart
r867 for (qreal i = 0, x = 0; x <= 2 * PI; x += m_step, i++) {
fluctuate = qrand() % 100;
Michal Klocek
Fixes and improvments to series API...
r1057 m_series->replace(x,points[i].y(),x,fabs(sin(x) * fluctuate));
Michal Klocek
Adds test/wavechart
r867
}
}