From 37d9cea3522ea5d2b6cba2ba57471d7803cac3f1 Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Thu, 20 Aug 2015 10:04:33 +0300
Subject: [PATCH] Make sketch plane normal (created on selected planar face)
 oriented outside of the solid, so simple extrusion on this sketch is also
 directed outside.

---
 src/GeomAlgoAPI/GeomAlgoAPI_FaceBuilder.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/GeomAlgoAPI/GeomAlgoAPI_FaceBuilder.cpp b/src/GeomAlgoAPI/GeomAlgoAPI_FaceBuilder.cpp
index 46a46d233..8e108ebfa 100644
--- a/src/GeomAlgoAPI/GeomAlgoAPI_FaceBuilder.cpp
+++ b/src/GeomAlgoAPI/GeomAlgoAPI_FaceBuilder.cpp
@@ -67,6 +67,12 @@ std::shared_ptr<GeomAPI_Pln> GeomAlgoAPI_FaceBuilder::plane(
   gp_Pln aPln = isPlanar.Plan();
   double aA, aB, aC, aD;
   aPln.Coefficients(aA, aB, aC, aD);
+  if (aFace.Orientation() == TopAbs_REVERSED) {
+    aA = -aA;
+    aB = -aB;
+    aC = -aC;
+    aD = -aD;
+  }
   aResult = std::shared_ptr<GeomAPI_Pln>(new GeomAPI_Pln(aA, aB, aC, aD));
   return aResult;
 }
-- 
2.30.2