1 files changed, 19 insertions, 0 deletions
diff --git a/src/gui/math3d/qquaternion.h b/src/gui/math3d/qquaternion.h
index eb835ef806..4a87b63d25 100644
--- a/src/gui/math3d/qquaternion.h
+++ b/src/gui/math3d/qquaternion.h
@@ -122,6 +122,13 @@ public:
     static QQuaternion fromAxisAndAngle
             (float x, float y, float z, float angle);
 
+#ifndef QT_NO_VECTOR3D
+    inline QVector3D toEulerAngles() const;
+    static inline QQuaternion fromEulerAngles(const QVector3D &eulerAngles);
+#endif
+    void toEulerAngles(float *pitch, float *yaw, float *roll) const;
+    static QQuaternion fromEulerAngles(float pitch, float yaw, float roll);
+
     QMatrix3x3 toRotationMatrix() const;
     static QQuaternion fromRotationMatrix(const QMatrix3x3 &rot3x3);
 
@@ -308,6 +315,18 @@ inline void QQuaternion::toAxisAndAngle(QVector3D *axis, float *angle) const
     *axis = QVector3D(aX, aY, aZ);
 }
 
+inline QVector3D QQuaternion::toEulerAngles() const
+{
+    float pitch, yaw, roll;
+    toEulerAngles(&pitch, &yaw, &roll);
+    return QVector3D(pitch, yaw, roll);
+}
+
+inline QQuaternion QQuaternion::fromEulerAngles(const QVector3D &eulerAngles)
+{
+    return QQuaternion::fromEulerAngles(eulerAngles.x(), eulerAngles.y(), eulerAngles.z());
+}
+
 #endif
 
 inline void QQuaternion::setVector(float aX, float aY, float aZ)