diff options
Diffstat (limited to 'src/gui/math3d')
| -rw-r--r-- | src/gui/math3d/qvectornd.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/gui/math3d/qvectornd.h b/src/gui/math3d/qvectornd.h index 153f3743d8..dec98bd936 100644 --- a/src/gui/math3d/qvectornd.h +++ b/src/gui/math3d/qvectornd.h @@ -177,6 +177,18 @@ private: friend class QVector3D; friend class QVector4D; + + template <std::size_t I, + typename V, + std::enable_if_t<(I < 2), bool> = true, + std::enable_if_t<std::is_same_v<std::decay_t<V>, QVector2D>, bool> = true> + friend constexpr decltype(auto) get(V &&vec) noexcept + { + if constexpr (I == 0) + return (std::forward<V>(vec).v[0]); + else if constexpr (I == 1) + return (std::forward<V>(vec).v[1]); + } }; Q_DECLARE_TYPEINFO(QVector2D, Q_PRIMITIVE_TYPE); @@ -327,6 +339,20 @@ private: friend QVector3D operator*(const QVector3D& vector, const QMatrix4x4& matrix); friend QVector3D operator*(const QMatrix4x4& matrix, const QVector3D& vector); #endif + + template <std::size_t I, + typename V, + std::enable_if_t<(I < 3), bool> = true, + std::enable_if_t<std::is_same_v<std::decay_t<V>, QVector3D>, bool> = true> + friend constexpr decltype(auto) get(V &&vec) noexcept + { + if constexpr (I == 0) + return (std::forward<V>(vec).v[0]); + else if constexpr (I == 1) + return (std::forward<V>(vec).v[1]); + else if constexpr (I == 2) + return (std::forward<V>(vec).v[2]); + } }; Q_DECLARE_TYPEINFO(QVector3D, Q_PRIMITIVE_TYPE); @@ -470,6 +496,22 @@ private: friend QVector4D operator*(const QVector4D& vector, const QMatrix4x4& matrix); friend QVector4D operator*(const QMatrix4x4& matrix, const QVector4D& vector); #endif + + template <std::size_t I, + typename V, + std::enable_if_t<(I < 4), bool> = true, + std::enable_if_t<std::is_same_v<std::decay_t<V>, QVector4D>, bool> = true> + friend constexpr decltype(auto) get(V &&vec) noexcept + { + if constexpr (I == 0) + return (std::forward<V>(vec).v[0]); + else if constexpr (I == 1) + return (std::forward<V>(vec).v[1]); + else if constexpr (I == 2) + return (std::forward<V>(vec).v[2]); + else if constexpr (I == 3) + return (std::forward<V>(vec).v[3]); + } }; Q_DECLARE_TYPEINFO(QVector4D, Q_PRIMITIVE_TYPE); @@ -1050,4 +1092,41 @@ Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QVector4D &); QT_END_NAMESPACE +/***************************** Tuple protocol *****************************/ + +namespace std { +#ifndef QT_NO_VECTOR2D + template <> + class tuple_size<QT_PREPEND_NAMESPACE(QVector2D)> : public integral_constant<size_t, 2> {}; + template <> + class tuple_element<0, QT_PREPEND_NAMESPACE(QVector2D)> { public: using type = float; }; + template <> + class tuple_element<1, QT_PREPEND_NAMESPACE(QVector2D)> { public: using type = float; }; +#endif // QT_NO_VECTOR2D + +#ifndef QT_NO_VECTOR3D + template <> + class tuple_size<QT_PREPEND_NAMESPACE(QVector3D)> : public integral_constant<size_t, 3> {}; + template <> + class tuple_element<0, QT_PREPEND_NAMESPACE(QVector3D)> { public: using type = float; }; + template <> + class tuple_element<1, QT_PREPEND_NAMESPACE(QVector3D)> { public: using type = float; }; + template <> + class tuple_element<2, QT_PREPEND_NAMESPACE(QVector3D)> { public: using type = float; }; +#endif // QT_NO_VECTOR3D + +#ifndef QT_NO_VECTOR4D + template <> + class tuple_size<QT_PREPEND_NAMESPACE(QVector4D)> : public integral_constant<size_t, 4> {}; + template <> + class tuple_element<0, QT_PREPEND_NAMESPACE(QVector4D)> { public: using type = float; }; + template <> + class tuple_element<1, QT_PREPEND_NAMESPACE(QVector4D)> { public: using type = float; }; + template <> + class tuple_element<2, QT_PREPEND_NAMESPACE(QVector4D)> { public: using type = float; }; + template <> + class tuple_element<3, QT_PREPEND_NAMESPACE(QVector4D)> { public: using type = float; }; +#endif // QT_NO_VECTOR4D +} + #endif // QVECTORND_H |