diff options
Diffstat (limited to 'tests/manual/wavechart/wavechart.cpp')
| -rw-r--r-- | tests/manual/wavechart/wavechart.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/tests/manual/wavechart/wavechart.cpp b/tests/manual/wavechart/wavechart.cpp index d2995826..72e5e737 100644 --- a/tests/manual/wavechart/wavechart.cpp +++ b/tests/manual/wavechart/wavechart.cpp @@ -28,18 +28,17 @@ ****************************************************************************/ #include "wavechart.h" -#include <cmath> +#include <qmath.h> QT_CHARTS_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) + m_step(2 * M_PI / numPoints) { QPen blue(Qt::blue); blue.setWidth(3); @@ -52,7 +51,7 @@ WaveChart::WaveChart(QChart* chart, QWidget* parent) : int fluctuate = 100; - for (qreal x = 0; x <= 2 * PI; x += m_step) { + for (qreal x = 0; x <= 2 * M_PI; x += m_step) { m_series->append(x, fabs(sin(x) * fluctuate)); } @@ -69,7 +68,7 @@ void WaveChart::update() int fluctuate; const QList<QPointF>& points = m_series->points(); - for (qreal i = 0, x = 0; x <= 2 * PI; x += m_step, i++) { + for (qreal i = 0, x = 0; x <= 2 * M_PI; x += m_step, i++) { fluctuate = qrand() % 100; m_series->replace(x,points[i].y(),x,fabs(sin(x) * fluctuate)); |