From c5c3862bfcf5b517e37c7f88387881dbd692ffdd Mon Sep 17 00:00:00 2001
From: Roman Telezhynskyi <kroluku@gmail.com>
Date: Wed, 16 Mar 2016 14:09:56 +0200
Subject: [PATCH] More human readable angle of line.

--HG--
branch : develop
---
 src/libs/vpatterndb/variables/vlineangle.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/libs/vpatterndb/variables/vlineangle.cpp b/src/libs/vpatterndb/variables/vlineangle.cpp
index cb0f18bb9..f28d8136f 100644
--- a/src/libs/vpatterndb/variables/vlineangle.cpp
+++ b/src/libs/vpatterndb/variables/vlineangle.cpp
@@ -32,6 +32,12 @@
 
 #include <QLineF>
 
+#if QT_VERSION < QT_VERSION_CHECK(5, 1, 0)
+#   include "../vmisc/vmath.h"
+#else
+#   include <QtMath>
+#endif
+
 //---------------------------------------------------------------------------------------------------------------------
 VLineAngle::VLineAngle()
     :VInternalVariable(), d(new VLineAngleData)
@@ -84,7 +90,9 @@ void VLineAngle::SetValue(const VPointF *p1, const VPointF *p2)
 {
     SCASSERT(p1 != nullptr);
     SCASSERT(p2 != nullptr);
-    VInternalVariable::SetValue(QLineF(p1->toQPointF(), p2->toQPointF()).angle());
+    //Correct angle. Try avoid results like 6,7563e-15.
+    const qreal angle = qFloor(QLineF(p1->toQPointF(), p2->toQPointF()).angle() * 100000.) / 100000.;
+    VInternalVariable::SetValue(angle);
 }
 
 //---------------------------------------------------------------------------------------------------------------------