diff options
Diffstat (limited to 'examples/widgets/graphicsview')
| -rw-r--r-- | examples/widgets/graphicsview/boxes/trackball.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/widgets/graphicsview/boxes/trackball.cpp b/examples/widgets/graphicsview/boxes/trackball.cpp index c350f6adee..794ce7ac37 100644 --- a/examples/widgets/graphicsview/boxes/trackball.cpp +++ b/examples/widgets/graphicsview/boxes/trackball.cpp @@ -126,7 +126,7 @@ void TrackBall::move(const QPointF& p, const QQuaternion &transformation) currentPos3D.normalize(); m_axis = QVector3D::crossProduct(lastPos3D, currentPos3D); - float angle = qRadiansToDegrees(std::asin(std::sqrt(QVector3D::dotProduct(m_axis, m_axis)))); + float angle = qRadiansToDegrees(std::asin(m_axis.length())); m_angularVelocity = angle / msecs; m_axis.normalize(); |