From edefef351ab6a4772e976a6227d44fd8707cf207 Mon Sep 17 00:00:00 2001
From: Gellule Xg <gellule.xg@gmail.com>
Date: Tue, 28 Jun 2011 21:00:22 -1000
Subject: As the comment says testing for a float to be equal to zero is not
 safe, hence the use of an ad-hoc epsilon instead. This was causing a crash
 with connectors where the size of the convex would change depending on
 calculation accuracy. This fixes part c) of bug #640985

(bzr r10384.1.1)
---
 src/2geom/convex-cover.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/2geom/convex-cover.cpp b/src/2geom/convex-cover.cpp
index 21a5c3107..d50accadf 100644
--- a/src/2geom/convex-cover.cpp
+++ b/src/2geom/convex-cover.cpp
@@ -145,7 +145,7 @@ ConvexHull::graham_scan() {
         double o = SignedTriangleArea(boundary[stac-2],
                                       boundary[stac-1],
                                       boundary[i]);
-        if(o == 0) { // colinear - dangerous...
+        if(fabs(o) < 1e-8) { // colinear - dangerous...
             stac--;
         } else if(o < 0) { // anticlockwise
         } else { // remove concavity
-- 
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