From 8b2a2340e7c8422fc94f6cdd90bce2154b1b0354 Mon Sep 17 00:00:00 2001
From: Christopher Lackner <clackner@cerbsim.com>
Date: Mon, 13 Sep 2021 18:15:50 +0200
Subject: [PATCH] Multiplication of ListOfShapes to find common shapes

---
 libsrc/occ/python_occ_shapes.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libsrc/occ/python_occ_shapes.cpp b/libsrc/occ/python_occ_shapes.cpp
index aadda7d8..0983721b 100644
--- a/libsrc/occ/python_occ_shapes.cpp
+++ b/libsrc/occ/python_occ_shapes.cpp
@@ -101,6 +101,15 @@ public:
       }
     return maxshape;
   }
+  ListOfShapes operator*(const ListOfShapes& other) const
+  {
+    ListOfShapes common;
+    for(const auto& shape : (*this))
+      for(const auto& shape_o : other)
+        if(shape.IsSame(shape_o))
+          common.push_back(shape);
+    return common;
+  }
 };
 
 
@@ -1451,6 +1460,7 @@ DLL_HEADER void ExportNgOCCShapes(py::module &m)
                selected.push_back(s);
            return selected;
          })
+    .def(py::self * py::self)
           
     .def("Sorted",[](ListOfShapes self, gp_Vec dir)
          {