From b65d3c188f1312026e1edfcf6e70cfa10d74a98c Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Thu, 24 Jun 2021 07:38:49 +0200
Subject: [PATCH] another optional table in Topology

---
 libsrc/meshing/topology.cpp | 6 +++++-
 libsrc/meshing/topology.hpp | 4 ++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/libsrc/meshing/topology.cpp b/libsrc/meshing/topology.cpp
index f085bcd6..59dd0251 100644
--- a/libsrc/meshing/topology.cpp
+++ b/libsrc/meshing/topology.cpp
@@ -49,6 +49,7 @@ namespace netgen
   {
     buildedges = static_buildedges;
     buildfaces = static_buildfaces;
+    buildvertex2element = static_buildvertex2element;
     timestamp = -1;
   }
 
@@ -75,6 +76,7 @@ namespace netgen
 
   bool MeshTopology :: static_buildedges = true; 
   bool MeshTopology :: static_buildfaces = true; 
+  bool MeshTopology :: static_buildvertex2element = true; 
   
   void MeshTopology :: EnableTableStatic (string name, bool set)
   {
@@ -82,9 +84,11 @@ namespace netgen
       static_buildedges = set;
     else if (name == "faces")
       static_buildfaces = set;      
+    else if (name == "vertex2element")
+      static_buildvertex2element = set;      
     else
       throw Exception ("noting known about table "+name +"\n"
-                       "knwon are 'edges', 'faces'");
+                       "knwon are 'edges', 'faces', 'vertex2element'");
   }
 
   
diff --git a/libsrc/meshing/topology.hpp b/libsrc/meshing/topology.hpp
index eb537a81..b6d700f3 100644
--- a/libsrc/meshing/topology.hpp
+++ b/libsrc/meshing/topology.hpp
@@ -43,12 +43,12 @@ struct T_FACE
 class MeshTopology
 {
   const Mesh * mesh;
-  bool buildvertex2element = true;
+  bool buildvertex2element;
   bool buildedges;
   bool buildfaces;
   bool build_parent_edges = false; // may be changed to default = false
   bool build_parent_faces = false; // may be changed to default = false
-  static bool static_buildedges, static_buildfaces;
+  static bool static_buildedges, static_buildfaces, static_buildvertex2element;
 
   NgArray<INDEX_2> edge2vert;
   NgArray<INDEX_4> face2vert;