From ff175d15ea04786b72303d76d2b74ed28d5731f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=B6khan=20=C3=96zen?= <Goekhan.Oezen@hksinformatik.de>
Date: Thu, 4 Feb 2016 15:14:34 +0100
Subject: [PATCH] optimized position of arc label line

---
 src/arc.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/arc.js b/src/arc.js
index 15aa105..2051beb 100644
--- a/src/arc.js
+++ b/src/arc.js
@@ -313,8 +313,8 @@ c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransf
                         var updated = $$.updateAngle(d),
                             innerLineLength = $$.gaugeArcWidth / $$.visibleTargetCount * (updated.index + 1),
                             lineAngle = updated.endAngle - Math.PI / 2,
-                            linePositioningAngle = lineAngle - Math.PI / 180 / 3,
-                            arcInnerRadius = $$.radius - innerLineLength;
+                            arcInnerRadius = $$.radius - innerLineLength,
+                            linePositioningAngle = lineAngle - (arcInnerRadius === 0 ? 0 : (1 / arcInnerRadius));
                         lineLength = $$.radiusExpanded - $$.radius + innerLineLength;
                         x = Math.cos(linePositioningAngle) * arcInnerRadius;
                         y = Math.sin(linePositioningAngle) * arcInnerRadius;