From 768b3d44d03cab84e57e2588d461489d7a01fc76 Mon Sep 17 00:00:00 2001
From: abn <adrien.bruneton@cea.fr>
Date: Mon, 22 Oct 2018 16:57:40 +0200
Subject: [PATCH] Intersec bug fix: ComputeResidual buggy for quad polyg with 2
 edges.

---
 .../Geometric2D/InterpKernelGeo2DQuadraticPolygon.cxx           | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/INTERP_KERNEL/Geometric2D/InterpKernelGeo2DQuadraticPolygon.cxx b/src/INTERP_KERNEL/Geometric2D/InterpKernelGeo2DQuadraticPolygon.cxx
index ef169e3d6..bbd3d0097 100644
--- a/src/INTERP_KERNEL/Geometric2D/InterpKernelGeo2DQuadraticPolygon.cxx
+++ b/src/INTERP_KERNEL/Geometric2D/InterpKernelGeo2DQuadraticPolygon.cxx
@@ -1218,6 +1218,8 @@ void QuadraticPolygon::ComputeResidual(const QuadraticPolygon& pol1, const std::
   for(std::list<QuadraticPolygon *>::const_iterator itMNT=pol1Zip.begin();itMNT!=pol1Zip.end();itMNT++,iiMNT++)
     nbOfTurn+=(*itMNT)->size();
   maxNbOfTurn=maxNbOfTurn*nbOfTurn; maxNbOfTurn*=maxNbOfTurn;
+  // [ABN] at least 3 turns for very small cases (typically one (quad) edge against one (quad or lin) edge forming a new cell)!
+  maxNbOfTurn = maxNbOfTurn<3 ? 3 : maxNbOfTurn;
   nbOfTurn=0;
   while(nbOfTurn<maxNbOfTurn && ((!pol1Zip.empty() || !edgesInPol2OnBoundaryL.empty())))
     {
-- 
2.39.2