diff options
| author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-04-23 13:46:55 +0200 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-05-30 08:28:11 +0000 |
| commit | d517d5428c30d1e9ae4b6413116ea147a8b64f3c (patch) | |
| tree | 1ffbff0eee3d65f1c6feb30c2b21dde53476c3bd /src | |
| parent | 6a1460874253ad6dce25a90dd3ab5bfe95e718c0 (diff) | |
Use qFuzzyCompare instead of qFuzzyIsNull in QPointF ==
qFuzzyIsNull has a fixed range, where qFuzzyCompare can tell if numbers
are different in a more relative range. Without it QPointFs that are
heavily scaled will be interpreted as identical, when they are quite
different at their own scale.
Task-number: QTBUG-60359
Task-number: QTBUG-62161
Change-Id: Ic4ba90e9e994aedff5548d690f053eb309b0a60b
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/tools/qpoint.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/corelib/tools/qpoint.h b/src/corelib/tools/qpoint.h index 0f3e0c3517..ae46f0d39f 100644 --- a/src/corelib/tools/qpoint.h +++ b/src/corelib/tools/qpoint.h @@ -345,16 +345,24 @@ Q_DECL_RELAXED_CONSTEXPR inline QPointF &QPointF::operator*=(qreal c) xp*=c; yp*=c; return *this; } +QT_WARNING_PUSH +QT_WARNING_DISABLE_CLANG("-Wfloat-equal") +QT_WARNING_DISABLE_GCC("-Wfloat-equal") + Q_DECL_CONSTEXPR inline bool operator==(const QPointF &p1, const QPointF &p2) { - return qFuzzyIsNull(p1.xp - p2.xp) && qFuzzyIsNull(p1.yp - p2.yp); + return ((!p1.xp && !p1.yp) || (!p2.xp && !p2.yp)) + ? (qFuzzyIsNull(p1.xp - p2.xp) && qFuzzyIsNull(p1.yp - p2.yp)) + : (qFuzzyCompare(p1.xp, p2.xp) && qFuzzyCompare(p1.yp, p2.yp)); } Q_DECL_CONSTEXPR inline bool operator!=(const QPointF &p1, const QPointF &p2) { - return !qFuzzyIsNull(p1.xp - p2.xp) || !qFuzzyIsNull(p1.yp - p2.yp); + return !(p1 == p2); } +QT_WARNING_POP + Q_DECL_CONSTEXPR inline const QPointF operator+(const QPointF &p1, const QPointF &p2) { return QPointF(p1.xp+p2.xp, p1.yp+p2.yp); |