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Updated README...
Updated README The README file is updated for Charts 2.0. Change-Id: I88685e258ebab0f4b48307e2ef63a581407aac31 Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>

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wavechart.cpp
67 lines | 1.8 KiB | text/x-c | CppLexer
Michal Klocek
minor. add missing license files
r875 /****************************************************************************
**
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r2688 ** Copyright (C) 2014 Digia Plc
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r875 ** All rights reserved.
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r2740 ** For any questions to Digia, please use contact form at http://qt.io
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r875 **
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r2740 ** This file is part of the Qt Charts module.
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r875 **
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r2740 ** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt License Agreement provided with the Software
** or, alternatively, in accordance with the terms contained in a written
** agreement between you and Digia.
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r875 **
** If you have questions regarding the use of this file, please use
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Updated license headers...
r2740 ** contact form at http://qt.io
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r875 **
****************************************************************************/
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Adds test/wavechart
r867 #include "wavechart.h"
#include <cmath>
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r2712 QT_CHARTS_USE_NAMESPACE
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#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);
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removed legend from wavechart and added axes to it
r1622 chart->legend()->setVisible(false);
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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);
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r1622 chart->createDefaultAxes();
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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();
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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));
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r867
}
}