From 8d177f3cafd1388a058f7802d5bbbdc5d4551559 Mon Sep 17 00:00:00 2001
From: tomate44 <cg@grellier.fr>
Date: Tue, 3 Jul 2018 13:44:52 +0200
Subject: [PATCH] add python binding of OCC defeaturing

---
 src/Mod/Part/App/TopoShapePy.xml    |  6 ++++++
 src/Mod/Part/App/TopoShapePyImp.cpp | 27 +++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/src/Mod/Part/App/TopoShapePy.xml b/src/Mod/Part/App/TopoShapePy.xml
index 4ad0dd941f..44a8b66cb7 100644
--- a/src/Mod/Part/App/TopoShapePy.xml
+++ b/src/Mod/Part/App/TopoShapePy.xml
@@ -563,6 +563,12 @@ The parameter is in the form list of tuples with the two shapes.</UserDocu>
 The parameter is a list of shapes.</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="defeaturing" Const="true">
+      <Documentation>
+        <UserDocu>Remove a feature defined by supplied faces and return a new shape.
+The parameter is a list of faces.</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="isInside" Const="true">
       <Documentation>
         <UserDocu>Checks whether a point is inside or outside the shape.
diff --git a/src/Mod/Part/App/TopoShapePyImp.cpp b/src/Mod/Part/App/TopoShapePyImp.cpp
index 93a46bdc11..720c9b695a 100644
--- a/src/Mod/Part/App/TopoShapePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapePyImp.cpp
@@ -2650,6 +2650,33 @@ PyObject* TopoShapePy::optimalBoundingBox(PyObject *args)
     }
 }
 
+PyObject* TopoShapePy::defeaturing(PyObject *args)
+{
+    PyObject *l;
+    if (!PyArg_ParseTuple(args, "O",&l))
+        return NULL;
+
+    try {
+        Py::Sequence list(l);
+        std::vector<TopoDS_Shape> shapes;
+        for (Py::Sequence::iterator it = list.begin(); it != list.end(); ++it) {
+            Py::TopoShape sh(*it);
+            shapes.push_back(
+                sh.extensionObject()->getTopoShapePtr()->getShape()
+            );
+        }
+        PyTypeObject* type = this->GetType();
+        PyObject* inst = type->tp_new(type, this, 0);
+        static_cast<TopoShapePy*>(inst)->getTopoShapePtr()->setShape
+            (this->getTopoShapePtr()->defeaturing(shapes));
+        return inst;
+    }
+    catch (const Standard_Failure& e) {
+        PyErr_SetString(PartExceptionOCCError, e.GetMessageString());
+        return NULL;
+    }
+}
+
 // End of Methods, Start of Attributes
 
 #if 0 // see ComplexGeoDataPy::Matrix which does the same