From 781ea7103eac1c88694ee4b52472b2d9963c38d9 Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Fri, 10 Sep 2021 12:42:41 +0200
Subject: [PATCH] FaceDescriptor array to Python

---
 libsrc/meshing/meshclass.hpp   | 12 ++++++++----
 libsrc/meshing/python_mesh.cpp |  7 +++++++
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/libsrc/meshing/meshclass.hpp b/libsrc/meshing/meshclass.hpp
index c6d40df9..1a6b9e80 100644
--- a/libsrc/meshing/meshclass.hpp
+++ b/libsrc/meshing/meshclass.hpp
@@ -81,7 +81,7 @@ namespace netgen
        the face-index of the surface element maps into
        this table.
     */
-    NgArray<FaceDescriptor> facedecoding;
+    Array<FaceDescriptor> facedecoding;
 
   
     /**
@@ -712,15 +712,19 @@ namespace netgen
     { return facedecoding.Size(); }
 
     const FaceDescriptor & GetFaceDescriptor (int i) const
-    { return facedecoding.Get(i); }
+    { return facedecoding[i-1]; }      
+    // { return facedecoding.Get(i); }
+
+    auto & FaceDescriptors () const { return facedecoding; }
 
     const EdgeDescriptor & GetEdgeDescriptor (int i) const
     { return edgedecoding[i]; }
 
 
     ///
-    FaceDescriptor & GetFaceDescriptor (int i) 
-    { return facedecoding.Elem(i); }
+    FaceDescriptor & GetFaceDescriptor (int i)
+    { return facedecoding[i-1]; }      
+    // { return facedecoding.Elem(i); }
 
     int IdentifyPeriodicBoundaries(const string& s1,
                                    const string& s2,
diff --git a/libsrc/meshing/python_mesh.cpp b/libsrc/meshing/python_mesh.cpp
index f0a761df..84b77622 100644
--- a/libsrc/meshing/python_mesh.cpp
+++ b/libsrc/meshing/python_mesh.cpp
@@ -848,6 +848,13 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
     .def("FaceDescriptor", static_cast<FaceDescriptor&(Mesh::*)(int)> (&Mesh::GetFaceDescriptor),
          py::return_value_policy::reference)
     .def("GetNFaceDescriptors", &Mesh::GetNFD)
+    
+    .def("FaceDescriptors", 
+         // static_cast<Array<Element>&(Mesh::*)()> (&Mesh::FaceDescriptors),
+         &Mesh::FaceDescriptors,         
+         py::return_value_policy::reference)
+    
+    
     .def("GetNDomains", &Mesh::GetNDomains)
 
     .def("GetVolumeNeighboursOfSurfaceElement", [](Mesh & self, size_t sel)