From d8f5a8da32b48a8490bf509e2757249896e06659 Mon Sep 17 00:00:00 2001
From: phkahler <14852918+phkahler@users.noreply.github.com>
Date: Tue, 8 Sep 2020 13:23:59 -0400
Subject: [PATCH] Fix issue #296.

We need to recognize two consecutive bridges as a non-ear.
---
 src/srf/triangulate.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/srf/triangulate.cpp b/src/srf/triangulate.cpp
index d1e0de181..d02f96380 100644
--- a/src/srf/triangulate.cpp
+++ b/src/srf/triangulate.cpp
@@ -325,6 +325,8 @@ bool SContour::IsEar(int bp, double scaledEps) const {
             Vector jp = l[j].p;
             Vector kp = l[k].p;
 
+            // two consecutive bridges (A,B,C) and later (C,B,A) are not an ear
+            if (jp.Equals(tr.c) && kp.Equals(tr.a)) return false;
             // check both edges from the point in question
             if (!RayIsInside(tr.a, tr.c, p,jp) && !RayIsInside(tr.a, tr.c, p,kp))
                 continue;