From 6673924a746d6952fef4d0c5bead8ed1fdd56975 Mon Sep 17 00:00:00 2001
From: Till Theato <root@ttill.de>
Date: Thu, 6 Jan 2011 09:59:11 +0000
Subject: [PATCH] Bezier Spline: Fix handles sometimes not detected as linked
 because of rounding problems

svn path=/trunk/kdenlive/; revision=5276
---
 src/beziercurve/bpoint.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/beziercurve/bpoint.cpp b/src/beziercurve/bpoint.cpp
index 2c549655..15bb9112 100644
--- a/src/beziercurve/bpoint.cpp
+++ b/src/beziercurve/bpoint.cpp
@@ -90,5 +90,8 @@ void BPoint::keepInRange(qreal xMin, qreal xMax)
 
 void BPoint::autoSetLinked()
 {
-    handlesLinked = !QLineF(h1, p).angleTo(QLineF(p, h2));
+    // sometimes the angle is returned as 360°
+    // due to rounding problems the angle is sometimes not quite 0
+    qreal angle = QLineF(h1, p).angleTo(QLineF(p, h2));
+    handlesLinked = angle < 1e-3 || qRound(angle) == 360;
 }
-- 
2.39.2