From 0c54e2dea1ee3052eda2e551bfb9108f97183f90 Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Thu, 11 Jan 2018 14:59:30 +0300
Subject: [PATCH] FIx for the issue #2399 : optimization of the Intersection
 feature results (better BSpline approximation, not by polygons).

---
 src/GeomAlgoAPI/GeomAlgoAPI_Intersection.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/GeomAlgoAPI/GeomAlgoAPI_Intersection.cpp b/src/GeomAlgoAPI/GeomAlgoAPI_Intersection.cpp
index b458cddf5..8cf31feba 100644
--- a/src/GeomAlgoAPI/GeomAlgoAPI_Intersection.cpp
+++ b/src/GeomAlgoAPI/GeomAlgoAPI_Intersection.cpp
@@ -70,7 +70,10 @@ void GeomAlgoAPI_Intersection::build(const ListOfShape& theObjects,
     }
   }
   anOperation->SetTools(aTools);
-
+  // optimization for the issue #2399
+  anOperation->Approximation(Standard_True);
+  anOperation->ComputePCurveOn1(Standard_True);
+  anOperation->ComputePCurveOn2(Standard_True);
   // Building and getting result.
   anOperation->Build();
   if(!anOperation->IsDone()) {
-- 
2.39.2