From 8480214ecbc6cf3d0941ed96168cb591eb218a91 Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Wed, 19 Sep 2018 10:22:58 +0300
Subject: [PATCH] Fix for #2579, note 7:

initially, nb=10 and the resulting geometry is correct. Modifying nb to 5 is also producing a correct result. But increasing again nb (to 8) is delivering an incorrect geometry
---
 src/Model/Model_ResultBody.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Model/Model_ResultBody.cpp b/src/Model/Model_ResultBody.cpp
index 514b0406d..9b3401290 100644
--- a/src/Model/Model_ResultBody.cpp
+++ b/src/Model/Model_ResultBody.cpp
@@ -229,6 +229,10 @@ void Model_ResultBody::updateSubs(const std::shared_ptr<GeomAPI_Shape>& theThisS
         aSub = anObjects->createBody(this->data(), aSubIndex);
         mySubs.push_back(aSub);
         mySubsMap[aSub] = int(mySubs.size() - 1);
+        if (isConcealed()) { // for issue #2579 note7
+          aSub->ModelAPI_ResultBody::setIsConcealed(true);
+          std::dynamic_pointer_cast<Model_ResultBody>(aSub)->updateConcealment();
+        }
       } else { // just update shape of this result
         aSub = mySubs[aSubIndex];
       }
-- 
2.39.2