diff options
Diffstat (limited to 'src/gui/math3d/qquaternion.cpp')
| -rw-r--r-- | src/gui/math3d/qquaternion.cpp | 53 |
1 files changed, 45 insertions, 8 deletions
diff --git a/src/gui/math3d/qquaternion.cpp b/src/gui/math3d/qquaternion.cpp index 17c4373acb..841a4c0c30 100644 --- a/src/gui/math3d/qquaternion.cpp +++ b/src/gui/math3d/qquaternion.cpp @@ -55,10 +55,6 @@ QT_BEGIN_NAMESPACE Quaternions are used to represent rotations in 3D space, and consist of a 3D rotation axis specified by the x, y, and z coordinates, and a scalar representing the rotation angle. - - The components of a quaternion are stored internally using the most - efficient representation for the GL rendering engine, which will be - either floating-point or fixed-point. */ /*! @@ -339,10 +335,6 @@ QVector3D QQuaternion::rotateVector(const QVector3D& vector) const \sa operator*=() */ -#ifndef M_PI -#define M_PI 3.14159265358979323846 -#endif - #ifndef QT_NO_VECTOR3D /*! @@ -579,6 +571,51 @@ QDebug operator<<(QDebug dbg, const QQuaternion &q) #endif +#ifndef QT_NO_DATASTREAM + +/*! + \fn QDataStream &operator<<(QDataStream &stream, const QQuaternion &quaternion) + \relates QQuaternion + + Writes the given \a quaternion to the given \a stream and returns a + reference to the stream. + + \sa {Format of the QDataStream Operators} +*/ + +QDataStream &operator<<(QDataStream &stream, const QQuaternion &quaternion) +{ + stream << double(quaternion.scalar()) << double(quaternion.x()) + << double(quaternion.y()) << double(quaternion.z()); + return stream; +} + +/*! + \fn QDataStream &operator>>(QDataStream &stream, QQuaternion &quaternion) + \relates QQuaternion + + Reads a quaternion from the given \a stream into the given \a quaternion + and returns a reference to the stream. + + \sa {Format of the QDataStream Operators} +*/ + +QDataStream &operator>>(QDataStream &stream, QQuaternion &quaternion) +{ + double scalar, x, y, z; + stream >> scalar; + stream >> x; + stream >> y; + stream >> z; + quaternion.setScalar(qreal(scalar)); + quaternion.setX(qreal(x)); + quaternion.setY(qreal(y)); + quaternion.setZ(qreal(z)); + return stream; +} + +#endif // QT_NO_DATASTREAM + #endif QT_END_NAMESPACE |