diff options
| -rw-r--r-- | src/shared/qtgradienteditor/qtgradientwidget.cpp | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/src/shared/qtgradienteditor/qtgradientwidget.cpp b/src/shared/qtgradienteditor/qtgradientwidget.cpp index 227813d92..f429efea9 100644 --- a/src/shared/qtgradienteditor/qtgradientwidget.cpp +++ b/src/shared/qtgradienteditor/qtgradientwidget.cpp @@ -382,15 +382,7 @@ void QtGradientWidget::mousePressEvent(QMouseEvent *e) y = current.y() - central.y(); x /= size().width() / 2; y /= size().height() / 2; - double r = sqrt(x * x + y * y); - - double arcSin = asin(y / r); - double arcCos = acos(x / r); - - double angle = arcCos * 180 / M_PI; - if (arcSin > 0) { - angle = -angle; - } + double angle = atan2(-y, x) * 180 / M_PI; d_ptr->m_angleOffset = d_ptr->m_angleConical - angle; d_ptr->m_dragAngle = d_ptr->m_angleConical; @@ -480,18 +472,8 @@ void QtGradientWidget::mouseMoveEvent(QMouseEvent *e) y = current.y() - central.y(); x /= size().width() / 2; y /= size().height() / 2; - double r = sqrt(x * x + y * y); - - double arcSin = asin(y / r); - double arcCos = acos(x / r); - - double angle = arcCos * 180 / M_PI; - if (arcSin > 0) { - angle = -angle; - } - - angle += d_ptr->m_angleOffset; + double angle = atan2(-y, x) * 180 / M_PI + d_ptr->m_angleOffset; d_ptr->setAngleConical(angle); } } |