From 5af24134812c7ad33dd6b09a3428c92492cccad6 Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Thu, 6 May 2021 21:46:56 +0200
Subject: [PATCH] disable edge/faces tables for Mesh class

---
 libsrc/meshing/python_mesh.cpp | 18 +++++-------------
 libsrc/meshing/topology.cpp    | 19 ++++++++++++++++---
 libsrc/meshing/topology.hpp    |  2 ++
 3 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/libsrc/meshing/python_mesh.cpp b/libsrc/meshing/python_mesh.cpp
index fd88061c..7fa34d81 100644
--- a/libsrc/meshing/python_mesh.cpp
+++ b/libsrc/meshing/python_mesh.cpp
@@ -1127,22 +1127,14 @@ project_boundaries : Optional[str] = None
 
 )delimiter")
 
+    .def_static ("EnableTableClass", [] (string name, bool set)
+          {
+            MeshTopology::EnableTableStatic(name, set);
+          },
+          py::arg("name"), py::arg("set")=true)
     .def ("EnableTable", [] (Mesh & self, string name, bool set)
           {
             const_cast<MeshTopology&>(self.GetTopology()).EnableTable(name, set);
-            /*
-            if (name == "edges")
-              const_cast<MeshTopology&>(self.GetTopology()).SetBuildEdges(set);
-            else if (name == "faces")
-              const_cast<MeshTopology&>(self.GetTopology()).SetBuildFaces(set);
-            else if (name == "parentedges")
-              const_cast<MeshTopology&>(self.GetTopology()).SetBuildParentEdges(set);
-            else if (name == "parentfaces")
-              const_cast<MeshTopology&>(self.GetTopology()).SetBuildParentFaces(set);
-	    else
-	      throw Exception ("noting known about table "+name +"\n"
-			       "knwon are 'edges', 'faces', 'parentedges', 'parentfaces'");
-            */
           },
           py::arg("name"), py::arg("set")=true)
     
diff --git a/libsrc/meshing/topology.cpp b/libsrc/meshing/topology.cpp
index 1a3c462e..72b3c6b1 100644
--- a/libsrc/meshing/topology.cpp
+++ b/libsrc/meshing/topology.cpp
@@ -41,12 +41,12 @@ namespace netgen
 
 
 
-
+  
   MeshTopology ::  MeshTopology (const Mesh & amesh)
     : mesh(&amesh)
   {
-    buildedges = true;
-    buildfaces = true;
+    buildedges = static_buildedges;
+    buildfaces = static_buildfaces;
     timestamp = -1;
   }
 
@@ -71,6 +71,19 @@ namespace netgen
                        "knwon are 'edges', 'faces', 'parentedges', 'parentfaces'");
   }
 
+  bool MeshTopology :: static_buildedges = false; 
+  bool MeshTopology :: static_buildfaces = false; 
+  
+  void MeshTopology :: EnableTableStatic (string name, bool set)
+  {
+    if (name == "edges")
+      static_buildedges = set;
+    else if (name == "faces")
+      static_buildfaces = set;      
+    else
+      throw Exception ("noting known about table "+name +"\n"
+                       "knwon are 'edges', 'faces'");
+  }
 
   
   template <typename FUNC>
diff --git a/libsrc/meshing/topology.hpp b/libsrc/meshing/topology.hpp
index 53fbc0ff..a9864a90 100644
--- a/libsrc/meshing/topology.hpp
+++ b/libsrc/meshing/topology.hpp
@@ -47,6 +47,7 @@ class MeshTopology
   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;
 
   NgArray<INDEX_2> edge2vert;
   NgArray<INDEX_4> face2vert;
@@ -86,6 +87,7 @@ public:
   void SetBuildParentFaces (bool bh) { build_parent_faces = bh; }
 
   void EnableTable (string name, bool set);
+  static void EnableTableStatic (string name, bool set);
 
   bool HasEdges () const  { return buildedges; }
   bool HasFaces () const  { return buildfaces; }