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-rw-r--r--src/corelib/tools/qeasingcurve.cpp12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/corelib/tools/qeasingcurve.cpp b/src/corelib/tools/qeasingcurve.cpp
index 2ae63fe135..52c8d13fe3 100644
--- a/src/corelib/tools/qeasingcurve.cpp
+++ b/src/corelib/tools/qeasingcurve.cpp
@@ -583,6 +583,13 @@ struct BezierEase : public QEasingCurveFunction
qWarning("QEasingCurve: Invalid bezier curve");
return x;
}
+
+ // The bezier computation is not always precise on the endpoints, so handle explicitly
+ if (!(x > 0))
+ return 0;
+ if (!(x < 1))
+ return 1;
+
SingleCubicBezier *singleCubicBezier = 0;
getBezierSegment(singleCubicBezier, x);
@@ -998,6 +1005,11 @@ struct BackEase : public QEasingCurveFunction
qreal value(qreal t) override
{
+ // The *Back() functions are not always precise on the endpoints, so handle explicitly
+ if (!(t > 0))
+ return 0;
+ if (!(t < 1))
+ return 1;
qreal o = (_o < 0) ? qreal(1.70158) : _o;
switch(_t) {
case QEasingCurve::InBack: