commit 955761f46fcec73c91c5dbf2547b6f88afb5d3fc
author Mikko Mononen <memononen@gmail.com> Mon Apr 16 11:24:04 2018 +0300
committer Mikko Mononen <memononen@gmail.com> Mon Apr 16 11:37:37 2018 +0300
tree 4488059482548e9ffc7c69ca07586f5512e70c0c
parent 25f13918f3dd50a49307f64cfdef416d5c64399f

Fix for #22

- handle degenerate cases better in CheckForRightSplice()

Source/sweep.c

diff --git a/Source/sweep.c b/Source/sweep.c
index 112f1ef..4f3c53e 100755
--- a/Source/sweep.c
+++ b/Source/sweep.c
@@ -493,7 +493,7 @@
 			SpliceMergeVertices( tess, eLo->Oprev, eUp );
 		}
 	} else {
-		if( EdgeSign( eUp->Dst, eLo->Org, eUp->Org ) < 0 ) return FALSE;
+		if( EdgeSign( eUp->Dst, eLo->Org, eUp->Org ) <= 0 ) return FALSE;
 
 		/* eLo->Org appears to be above eUp, so splice eLo->Org into eUp */
 		RegionAbove(regUp)->dirty = regUp->dirty = TRUE;