From 293adaddb5853b87f9e519d189ba93d1e8b9843c Mon Sep 17 00:00:00 2001
From: eap <eap@opencascade.com>
Date: Fri, 12 Mar 2021 19:28:36 +0300
Subject: [PATCH] Fix ID shift for testing export

---
 src/SMDS/SMDS_ElementFactory.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/SMDS/SMDS_ElementFactory.cxx b/src/SMDS/SMDS_ElementFactory.cxx
index bd5a68380..162843db8 100644
--- a/src/SMDS/SMDS_ElementFactory.cxx
+++ b/src/SMDS/SMDS_ElementFactory.cxx
@@ -172,12 +172,12 @@ smIdType SMDS_ElementFactory::GetMinID()
 
 SMDS_MeshElement* SMDS_ElementFactory::NewElement( const smIdType ID )
 {
-  smIdType id = ID - idShift;
+  smIdType id = ID > idShift ? ID - idShift : ID;
   smIdType iChunk = ( id - 1 ) / theChunkSize;
   smIdType index  = ( id - 1 ) % theChunkSize;
   while ((smIdType) myChunks.size() <= iChunk )
   {
-    smIdType id0 = myChunks.size() * theChunkSize + 1;
+    smIdType id0 = myChunks.size() * theChunkSize + 1 + idShift;
     myChunks.push_back( new SMDS_ElementChunk( this, id0 ));
   }
   SMDS_MeshElement* e = myChunks[iChunk].Element( FromIdType<int>(index) );
-- 
2.30.2