From a90ee2e437d2ca04ba90510e41ca8b7e67d2d7dd Mon Sep 17 00:00:00 2001
From: Christoph Wintersteiger <c.wintersteiger@gmx.at>
Date: Fri, 20 Oct 2017 16:39:37 +0200
Subject: [PATCH 1/3] set occparams and generate triangulation with BRepMesh

---
 libsrc/occ/occgenmesh.cpp | 11 ++++++++++-
 libsrc/occ/python_occ.cpp |  6 ++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/libsrc/occ/occgenmesh.cpp b/libsrc/occ/occgenmesh.cpp
index 7a26bf1b..c442438d 100644
--- a/libsrc/occ/occgenmesh.cpp
+++ b/libsrc/occ/occgenmesh.cpp
@@ -1137,7 +1137,12 @@ namespace netgen
             Handle(Geom_Surface) surf = BRep_Tool::Surface (face);
             Handle(Poly_Triangulation) triangulation = BRep_Tool::Triangulation (face, loc);
 
-            if (triangulation.IsNull()) continue;
+            if (triangulation.IsNull())
+              {
+                BRepTools::Clean (geom.shape);
+                BRepMesh_IncrementalMesh (geom.shape, 0.01, true);
+                triangulation = BRep_Tool::Triangulation (face, loc);
+              }
 
             BRepAdaptor_Surface sf(face, Standard_True);
             BRepLProp_SLProps prop(sf, 2, 1e-5);
@@ -1286,6 +1291,10 @@ namespace netgen
 
   int OCCGenerateMesh (OCCGeometry & geom, shared_ptr<Mesh> & mesh, MeshingParameters & mparam)
    {
+     cout << "MeshingParameters: " << mparam << endl;
+     cout << "OCCParameters: " << endl;
+     occparam.Print(cout);
+     
       multithread.percent = 0;
 
       if (mparam.perfstepsstart <= MESHCONST_ANALYSE)
diff --git a/libsrc/occ/python_occ.cpp b/libsrc/occ/python_occ.cpp
index 186970b7..7c14dde8 100644
--- a/libsrc/occ/python_occ.cpp
+++ b/libsrc/occ/python_occ.cpp
@@ -33,6 +33,12 @@ DLL_HEADER void ExportNgOCC(py::module &m)
 					  SetGlobalMesh(mesh);
 					  mesh->SetGeometry(geo);
 					  ng_geometry = geo;
+
+                                          occparam.resthcloseedgefac = 2.0;
+                                          occparam.resthcloseedgeenable = 1;
+                                          occparam.resthminedgelen = 0.2;
+                                          occparam.resthminedgelenenable = 1;
+
 					  try
 					    {
 					      geo->GenerateMesh(mesh,param);

From ef4405c3d7eadd8f784e4ff156240e51cbcebc69 Mon Sep 17 00:00:00 2001
From: Christoph Wintersteiger <c.wintersteiger@gmx.at>
Date: Wed, 25 Oct 2017 15:47:27 +0200
Subject: [PATCH 2/3] remove output

---
 libsrc/occ/occgenmesh.cpp | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/libsrc/occ/occgenmesh.cpp b/libsrc/occ/occgenmesh.cpp
index c442438d..7eac4cc3 100644
--- a/libsrc/occ/occgenmesh.cpp
+++ b/libsrc/occ/occgenmesh.cpp
@@ -1291,10 +1291,6 @@ namespace netgen
 
   int OCCGenerateMesh (OCCGeometry & geom, shared_ptr<Mesh> & mesh, MeshingParameters & mparam)
    {
-     cout << "MeshingParameters: " << mparam << endl;
-     cout << "OCCParameters: " << endl;
-     occparam.Print(cout);
-     
       multithread.percent = 0;
 
       if (mparam.perfstepsstart <= MESHCONST_ANALYSE)

From df01ffcb5a7754b9db65c50f0c96e6aeb1cb134a Mon Sep 17 00:00:00 2001
From: Christoph Wintersteiger <c.wintersteiger@gmx.at>
Date: Fri, 27 Oct 2017 11:40:44 +0200
Subject: [PATCH 3/3] setting occparms not necessary

---
 libsrc/occ/python_occ.cpp | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/libsrc/occ/python_occ.cpp b/libsrc/occ/python_occ.cpp
index 7c14dde8..dbd1eda6 100644
--- a/libsrc/occ/python_occ.cpp
+++ b/libsrc/occ/python_occ.cpp
@@ -34,11 +34,6 @@ DLL_HEADER void ExportNgOCC(py::module &m)
 					  mesh->SetGeometry(geo);
 					  ng_geometry = geo;
 
-                                          occparam.resthcloseedgefac = 2.0;
-                                          occparam.resthcloseedgeenable = 1;
-                                          occparam.resthminedgelen = 0.2;
-                                          occparam.resthminedgelenenable = 1;
-
 					  try
 					    {
 					      geo->GenerateMesh(mesh,param);