From 9b5004d6b989050fb977c30c99fe049ff881ede1 Mon Sep 17 00:00:00 2001
From: Thomas Friedel <tomee6@gmail.com>
Date: Tue, 6 Feb 2018 11:33:20 +0100
Subject: [PATCH] fixed a bug with anticlockwise arcs

---
 paths.go | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/paths.go b/paths.go
index 9752caa..fe998a5 100644
--- a/paths.go
+++ b/paths.go
@@ -95,9 +95,16 @@ func (cv *Canvas) Arc(x, y, radius, startAngle, endAngle float32, anticlockwise
 	if step > 0.8 {
 		step = 0.8
 	}
-	for a := startAngle; a < endAngle; a += step {
-		s, c := fmath.Sincos(a)
-		cv.LineTo(x+radius*c, y+radius*s)
+	if anticlockwise {
+		for a := startAngle; a > endAngle; a -= step {
+			s, c := fmath.Sincos(a)
+			cv.LineTo(x+radius*c, y+radius*s)
+		}
+	} else {
+		for a := startAngle; a < endAngle; a += step {
+			s, c := fmath.Sincos(a)
+			cv.LineTo(x+radius*c, y+radius*s)
+		}
 	}
 	s, c := fmath.Sincos(endAngle)
 	cv.LineTo(x+radius*c, y+radius*s)