From 6df7babc5bc61f9d5753b9fd6bef32d05a32dc98 Mon Sep 17 00:00:00 2001
From: anv <anv@opencascade.com>
Date: Wed, 28 Jun 2017 16:10:30 +0300
Subject: [PATCH] 0028871: Various problems in SAT export

---
 src/ShapeAnalysis/ShapeAnalysis_Curve.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ShapeAnalysis/ShapeAnalysis_Curve.cxx b/src/ShapeAnalysis/ShapeAnalysis_Curve.cxx
index 21de5a9b1d..21187e1ae6 100644
--- a/src/ShapeAnalysis/ShapeAnalysis_Curve.cxx
+++ b/src/ShapeAnalysis/ShapeAnalysis_Curve.cxx
@@ -701,6 +701,7 @@ Standard_Integer ShapeAnalysis_Curve::SelectForwardSeam(const Handle(Geom2d_Curv
     if (BC1.IsNull()) return theCurveIndice;
     gp_Pnt2d StartBC1 = BC1->StartPoint();
     gp_Pnt2d EndBC1   = BC1->EndPoint();
+    if (StartBC1.Distance(EndBC1) < gp::Resolution()) return theCurveIndice;
     gp_Vec2d VecBC1(StartBC1, EndBC1);
     L1 = new Geom2d_Line(StartBC1, VecBC1);
   }
@@ -712,6 +713,7 @@ Standard_Integer ShapeAnalysis_Curve::SelectForwardSeam(const Handle(Geom2d_Curv
     if (BC2.IsNull()) return theCurveIndice;
     gp_Pnt2d StartBC2 = BC2->StartPoint();
     gp_Pnt2d EndBC2   = BC2->EndPoint();
+    if (StartBC2.Distance(EndBC2) < gp::Resolution()) return theCurveIndice;
     gp_Vec2d VecBC2(StartBC2, EndBC2);
     L2 = new Geom2d_Line(StartBC2, VecBC2);
   }
-- 
2.39.5