From 91a3b3d396a31413ff4ac1c0af7243aae6e416e2 Mon Sep 17 00:00:00 2001
From: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
Date: Fri, 5 Aug 2016 11:44:36 +0200
Subject: [PATCH] fixed polygon filleting glitch for colinear outline segments

---
 polygon/PolyLine.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/polygon/PolyLine.cpp b/polygon/PolyLine.cpp
index 61267c8aa5..304fba5bf2 100644
--- a/polygon/PolyLine.cpp
+++ b/polygon/PolyLine.cpp
@@ -423,7 +423,7 @@ CPolyLine* CPolyLine::Fillet( unsigned int aRadius, unsigned int aSegments )
             double          denom   = sqrt( 2.0 / ( 1 + cosine ) - 1 );
 
             // Do nothing in case of parallel edges
-            if( std::isinf( denom ) )
+            if( !std::isfinite( denom ) )
                 continue;
 
             // Limit rounding distance to one half of an edge