diff options
Diffstat (limited to 'examples/widgets/itemviews/chart/pieview.cpp')
| -rw-r--r-- | examples/widgets/itemviews/chart/pieview.cpp | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/examples/widgets/itemviews/chart/pieview.cpp b/examples/widgets/itemviews/chart/pieview.cpp index d1e54b384d..9793e7d89b 100644 --- a/examples/widgets/itemviews/chart/pieview.cpp +++ b/examples/widgets/itemviews/chart/pieview.cpp @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** @@ -17,8 +17,8 @@ ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. -** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names -** of its contributors may be used to endorse or promote products derived +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** @@ -38,8 +38,8 @@ ** ****************************************************************************/ -#include <math.h> #include <QtWidgets> +#include <cmath> #ifndef M_PI #define M_PI 3.1415927 @@ -109,13 +109,13 @@ QModelIndex PieView::indexAt(const QPoint &point) const double cy = totalSize / 2 - wy; // positive cy for items above the center // Determine the distance from the center point of the pie chart. - double d = pow(pow(cx, 2) + pow(cy, 2), 0.5); + double d = std::sqrt(std::pow(cx, 2) + std::pow(cy, 2)); if (d == 0 || d > pieSize / 2) return QModelIndex(); // Determine the angle of the point. - double angle = (180 / M_PI) * acos(cx / d); + double angle = (180 / M_PI) * std::acos(cx / d); if (cy < 0) angle = 360 - angle; |