diff options
| -rw-r--r-- | src/gui/math3d/qquaternion.cpp | 12 | ||||
| -rw-r--r-- | src/gui/math3d/qvector2d.cpp | 8 | ||||
| -rw-r--r-- | src/gui/math3d/qvector3d.cpp | 10 | ||||
| -rw-r--r-- | src/gui/math3d/qvector4d.cpp | 12 |
4 files changed, 34 insertions, 8 deletions
diff --git a/src/gui/math3d/qquaternion.cpp b/src/gui/math3d/qquaternion.cpp index e48bced..d5ec054 100644 --- a/src/gui/math3d/qquaternion.cpp +++ b/src/gui/math3d/qquaternion.cpp @@ -239,7 +239,11 @@ qreal QQuaternion::lengthSquared() const */ QQuaternion QQuaternion::normalized() const { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp) + + double(zp) * double(zp) + + double(wp) * double(wp); if (qFuzzyIsNull(len - 1.0f)) return *this; else if (!qFuzzyIsNull(len)) @@ -256,7 +260,11 @@ QQuaternion QQuaternion::normalized() const */ void QQuaternion::normalize() { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp) + + double(zp) * double(zp) + + double(wp) * double(wp); if (qFuzzyIsNull(len - 1.0f) || qFuzzyIsNull(len)) return; diff --git a/src/gui/math3d/qvector2d.cpp b/src/gui/math3d/qvector2d.cpp index f12bec0..2555a6f 100644 --- a/src/gui/math3d/qvector2d.cpp +++ b/src/gui/math3d/qvector2d.cpp @@ -190,7 +190,9 @@ qreal QVector2D::lengthSquared() const */ QVector2D QVector2D::normalized() const { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp); if (qFuzzyIsNull(len - 1.0f)) return *this; else if (!qFuzzyIsNull(len)) @@ -207,7 +209,9 @@ QVector2D QVector2D::normalized() const */ void QVector2D::normalize() { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp); if (qFuzzyIsNull(len - 1.0f) || qFuzzyIsNull(len)) return; diff --git a/src/gui/math3d/qvector3d.cpp b/src/gui/math3d/qvector3d.cpp index 7d4ddf7..9552e3a 100644 --- a/src/gui/math3d/qvector3d.cpp +++ b/src/gui/math3d/qvector3d.cpp @@ -205,7 +205,10 @@ QVector3D::QVector3D(const QVector4D& vector) */ QVector3D QVector3D::normalized() const { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp) + + double(zp) * double(zp); if (qFuzzyIsNull(len - 1.0f)) return *this; else if (!qFuzzyIsNull(len)) @@ -222,7 +225,10 @@ QVector3D QVector3D::normalized() const */ void QVector3D::normalize() { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp) + + double(zp) * double(zp); if (qFuzzyIsNull(len - 1.0f) || qFuzzyIsNull(len)) return; diff --git a/src/gui/math3d/qvector4d.cpp b/src/gui/math3d/qvector4d.cpp index 17acfff..1691a6d 100644 --- a/src/gui/math3d/qvector4d.cpp +++ b/src/gui/math3d/qvector4d.cpp @@ -255,7 +255,11 @@ qreal QVector4D::lengthSquared() const */ QVector4D QVector4D::normalized() const { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp) + + double(zp) * double(zp) + + double(wp) * double(wp); if (qFuzzyIsNull(len - 1.0f)) return *this; else if (!qFuzzyIsNull(len)) @@ -272,7 +276,11 @@ QVector4D QVector4D::normalized() const */ void QVector4D::normalize() { - qreal len = lengthSquared(); + // Need some extra precision if the length is very small. + double len = double(xp) * double(xp) + + double(yp) * double(yp) + + double(zp) * double(zp) + + double(wp) * double(wp); if (qFuzzyIsNull(len - 1.0f) || qFuzzyIsNull(len)) return; |