From 62a59f534185e3143e71d82049806b168e2ce92c Mon Sep 17 00:00:00 2001
From: xavier
 <xavier@r991  xavier  2010-05-09 20:40:08 +0200 (dim. 09 mai 2010)>
Date: Wed, 6 Mar 2013 18:50:46 +0000
Subject: [PATCH] Added QET::round() and QET::roundPoint().

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2057 bfdf4180-ca20-0410-9c96-a3a8aa849046
---
 sources/qet.cpp | 15 +++++++++++++++
 sources/qet.h   |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/sources/qet.cpp b/sources/qet.cpp
index 4ad78a60d..ff4f71ac5 100644
--- a/sources/qet.cpp
+++ b/sources/qet.cpp
@@ -497,6 +497,21 @@ QString QET::pointerString(void *ptr) {
 	);
 }
 
+/**
+	Round \a x to the nearest multiple of the invert of \a epsilon.
+	For instance, epsilon = 10 will round to 1/10 = 0.1
+*/
+qreal QET::round(qreal x, qreal epsilon) {
+	return(int(x * epsilon) / epsilon);
+}
+
+/**
+	Round the coordinates of \a p to the nearest multiple of \a epsilon.
+*/
+QPointF QET::roundPoint(const QPointF &p, qreal epsilon) {
+	return(QPointF(QET::round(p.x(), epsilon), QET::round(p.y(), epsilon)));
+}
+
 /**
 	@param angle Un angle quelconque
 	@return l'angle passe en parametre, mais ramene entre -360.0 + 360.0 degres
diff --git a/sources/qet.h b/sources/qet.h
index e98f3be17..743d73864 100644
--- a/sources/qet.h
+++ b/sources/qet.h
@@ -161,6 +161,8 @@ namespace QET {
 	QString diagramAreaToString(const QET::DiagramArea &);
 	QET::DiagramArea diagramAreaFromString(const QString &);
 	QString pointerString(void *);
+	qreal round(qreal, qreal);
+	QPointF roundPoint(const QPointF &, qreal);
 	qreal correctAngle(const qreal &);
 	bool compareCanonicalFilePaths(const QString &, const QString &);
 	QString titleBlockColumnLengthToString(const TitleBlockColumnLength  &);