diff options
Diffstat (limited to 'src/gui/math3d')
| -rw-r--r-- | src/gui/math3d/qquaternion.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/math3d/qquaternion.cpp b/src/gui/math3d/qquaternion.cpp index 6998957ca1..f546d63a72 100644 --- a/src/gui/math3d/qquaternion.cpp +++ b/src/gui/math3d/qquaternion.cpp @@ -386,7 +386,7 @@ void QQuaternion::getAxisAndAngle(float *x, float *y, float *z, float *angle) co *y = yp / length; *z = zp / length; } - *angle = qRadiansToDegrees(2.0f * std::acos(wp)); + *angle = qRadiansToDegrees(2.0f * std::atan2(length, wp)); } else { // angle is 0 (mod 2*pi), so any axis will fit *x = *y = *z = *angle = 0.0f; |