From 54af8014c401bca14120ad0065c74f0c52569803 Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Sat, 24 Jul 2021 16:18:22 +0200
Subject: [PATCH] back to trying both occ surface-meshing versions

---
 libsrc/occ/occgenmesh.cpp |  5 +++--
 libsrc/occ/python_occ.cpp | 15 +++++++++++++++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/libsrc/occ/occgenmesh.cpp b/libsrc/occ/occgenmesh.cpp
index 5b024b62..aca4fbfe 100644
--- a/libsrc/occ/occgenmesh.cpp
+++ b/libsrc/occ/occgenmesh.cpp
@@ -643,7 +643,7 @@ namespace netgen
         Box<3> bb = geom.GetBoundingBox();
 
         // int projecttype = PLANESPACE;
-        int projecttype = PARAMETERSPACE;
+        // int projecttype = PARAMETERSPACE;
         
         static Timer tinit("init");
         tinit.Start();
@@ -840,7 +840,8 @@ namespace netgen
                 cout << "retry Surface " << k << endl;
 
                 k--;
-                projecttype*=-1;
+                // projecttype*=-1;
+                projecttype = PLANESPACE;
                 notrys++;
                 continue;
               }
diff --git a/libsrc/occ/python_occ.cpp b/libsrc/occ/python_occ.cpp
index 6cbb60f9..ac19d5cb 100644
--- a/libsrc/occ/python_occ.cpp
+++ b/libsrc/occ/python_occ.cpp
@@ -15,6 +15,7 @@
 #include <BOPAlgo_MakerVolume.hxx>
 #include <BOPAlgo_Section.hxx>
 #include <BRepAlgoAPI_Cut.hxx>
+#include <BRepAlgoAPI_Section.hxx>
 
 
 
@@ -244,6 +245,7 @@ DLL_HEADER void ExportNgOCC(py::module &m)
     .def("__mul__", [] (const TopoDS_Shape & shape1, const TopoDS_Shape & shape2)
          {
            // https://dev.opencascade.org/doc/occt-7.3.0/overview/html/occt_user_guides__boolean_operations.html#occt_algorithms_10a
+
            BOPAlgo_MakerVolume aMV;
            // BOPAlgo_Section aMV;  // only vertices + edges 
            // BOPAlgo_Builder aMV;
@@ -257,6 +259,19 @@ DLL_HEADER void ExportNgOCC(py::module &m)
            aMV.Perform();
            // aMV.Build();
            return aMV.Shape();
+
+           /*
+              // ?????
+           // auto cut = BRepAlgoAPI_Cut (shape1, shape2);
+           auto cut = BRepAlgoAPI_Section (shape1, shape2);
+           TopTools_ListOfShape aLSObjects;
+           aLSObjects.Append (cut);
+
+           BOPAlgo_MakerVolume aMV;
+           aMV.SetArguments(aLSObjects);
+           aMV.Perform();
+           return aMV.Shape();
+           */
          });
   ;