+ add method to write/read BREP in binary format

cMake/FindOpenCasCade.cmake

@@ -104,6 +104,7 @@ if(OCC_FOUND)
     TKSTL
     TKShHealing
     TKXSBase
+    TKBin
     TKBool
     TKBO
     TKBRep

cMake/UseLibPack10x.cmake

@@ -431,6 +431,7 @@ set(OCC_LIBRARIES
     optimized TKSTL
     optimized TKShHealing
     optimized TKXSBase
+    optimized TKBin
     optimized TKBool
     optimized TKBO
     optimized TKBRep
@@ -456,6 +457,7 @@ set(OCC_DEBUG_LIBRARIES
     debug TKSTLd
     debug TKShHealingd
     debug TKXSBased
+    debug TKBind
     debug TKBoold
     debug TKBOd
     debug TKBRepd

cMake/UseLibPack6x.cmake

@@ -305,6 +305,7 @@ set(OCC_LIBRARIES
     TKSTL
     TKShHealing
     TKXSBase
+    TKBin
     TKBool
     TKBO
     TKBRep

cMake/UseLibPack7x.cmake

@@ -311,6 +311,7 @@ set(OCC_LIBRARIES
     TKSTL
     TKShHealing
     TKXSBase
+    TKBin
     TKBool
     TKBO
     TKBRep

cMake/UseLibPack8x.cmake

@@ -356,6 +356,7 @@ set(OCC_LIBRARIES
     optimized     TKSTL
     optimized     TKShHealing
     optimized     TKXSBase
+    optimized     TKBin
     optimized     TKBool 
     optimized     TKXSBase 
     optimized     TKBO
@@ -391,6 +392,7 @@ set(OCC_DEBUG_LIBRARIES
     debug     TKSTLd
     debug     TKShHealingd
     debug     TKXSBased
+    debug     TKBind
     debug     TKBoold
     debug     TKXSBased 
     debug     TKBOd

cMake/UseLibPack9x.cmake

@@ -371,6 +371,7 @@ set(OCC_LIBRARIES
     optimized TKSTL
     optimized TKShHealing
     optimized TKXSBase
+    optimized TKBin
     optimized TKBool
     optimized TKBO
     optimized TKBRep
@@ -396,6 +397,7 @@ set(OCC_DEBUG_LIBRARIES
     debug TKSTLd
     debug TKShHealingd
     debug TKXSBased
+    debug TKBind
     debug TKBoold
     debug TKBOd
     debug TKBRepd

cMake/UseLibPackCustom.cmake

@@ -376,6 +376,7 @@ set(OCC_LIBRARIES
     TKSTL
     TKShHealing
     TKXSBase
+    TKBin
     TKBool
     TKBO
     TKBRep

src/Mod/Part/App/TopoShape.cpp

@@ -144,6 +144,8 @@
 # include <ShapeUpgrade_RemoveInternalWires.hxx>
 # include <Standard_Version.hxx>
 #endif
+# include <BinTools.hxx>
+# include <BinTools_ShapeSet.hxx>
 # include <Poly_Polygon3D.hxx>
 # include <Poly_PolygonOnTriangulation.hxx>
 # include <BRepBuilderAPI_Sewing.hxx>
@@ -670,6 +672,21 @@ void TopoShape::importBrep(std::istream& str)
     }
 }
 
+void TopoShape::importBinary(std::istream& str)
+{
+    BinTools_ShapeSet set;
+    set.Read(str);
+    Standard_Integer index;
+    BinTools::GetInteger(str, index);
+
+    try {
+        this->_Shape = set.Shape(index);
+    }
+    catch (Standard_Failure) {
+        throw Base::RuntimeError("Failed to read shape from binary stream");
+    }
+}
+
 void TopoShape::write(const char *FileName) const
 {
     Base::FileInfo File(FileName);
@@ -758,6 +775,14 @@ void TopoShape::exportBrep(std::ostream& out) const
     BRepTools::Write(this->_Shape, out);
 }
 
+void TopoShape::exportBinary(std::ostream& out)
+{
+    BinTools_ShapeSet set;
+    Standard_Integer index = set.Add(this->_Shape);
+    set.Write(out);
+    BinTools::PutInteger(out, index);
+}
+
 void TopoShape::dump(std::ostream& out) const
 {
     BRepTools::Dump(this->_Shape, out);

src/Mod/Part/App/TopoShape.h

@@ -124,10 +124,12 @@ public:
     void importStep(const char *FileName);
     void importBrep(const char *FileName);
     void importBrep(std::istream&);
+    void importBinary(std::istream&);
     void exportIges(const char *FileName) const;
     void exportStep(const char *FileName) const;
     void exportBrep(const char *FileName) const;
     void exportBrep(std::ostream&) const;
+    void exportBinary(std::ostream&);
     void exportStl (const char *FileName, double deflection) const;
     void exportFaceSet(double, double, std::ostream&) const;
     void exportLineSet(std::ostream&) const;

src/Mod/Part/App/TopoShapePy.xml

@@ -53,6 +53,11 @@ Sub-elements such as vertices, edges or faces are accessible as:
         <UserDocu>Export the content of this shape to an BREP file. BREP is a CasCade native format.</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="exportBinary" Const="true">
+      <Documentation>
+        <UserDocu>Export the content of this shape in binary format to a file.</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="exportBrepToString" Const="true">
       <Documentation>
         <UserDocu>Export the content of this shape to a string in BREP format. BREP is a CasCade native format.</UserDocu>
@@ -69,13 +74,18 @@ Sub-elements such as vertices, edges or faces are accessible as:
       </Documentation>
     </Methode>
     <Methode Name="importBrep">
+      <Documentation>
+        <UserDocu>Load the shape from a file in BREP format.</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="importBinary">
       <Documentation>
         <UserDocu>Import the content to this shape of a string in BREP format.</UserDocu>
       </Documentation>
     </Methode>
     <Methode Name="importBrepFromString">
       <Documentation>
-        <UserDocu>Import the content to this shape from a string in BREP format.</UserDocu>
+        <UserDocu>Load the shape from a string that keeps the content in BREP format.</UserDocu>
       </Documentation>
     </Methode>
     <Methode Name="extrude" Const="true">

src/Mod/Part/App/TopoShapePyImp.cpp

@@ -355,6 +355,26 @@ PyObject*  TopoShapePy::exportBrep(PyObject *args)
     Py_Return;
 }
 
+PyObject*  TopoShapePy::exportBinary(PyObject *args)
+{
+    char* input;
+    if (!PyArg_ParseTuple(args, "s", &input))
+        return NULL;
+
+    try {
+        // read binary brep
+        std::ofstream str(input, std::ios::out | std::ios::binary);
+        getTopoShapePtr()->exportBinary(str);
+        str.close();
+    }
+    catch (const Base::Exception& e) {
+        PyErr_SetString(PartExceptionOCCError,e.what());
+        return NULL;
+    }
+
+    Py_Return;
+}
+
 PyObject*  TopoShapePy::dumpToString(PyObject *args)
 {
     if (!PyArg_ParseTuple(args, ""))
@@ -430,6 +450,26 @@ PyObject*  TopoShapePy::importBrep(PyObject *args)
     Py_Return;
 }
 
+PyObject*  TopoShapePy::importBinary(PyObject *args)
+{
+    char* input;
+    if (!PyArg_ParseTuple(args, "s", &input))
+        return NULL;
+
+    try {
+        // read binary brep
+        std::ifstream str(input, std::ios::in | std::ios::binary);
+        getTopoShapePtr()->importBinary(str);
+        str.close();
+    }
+    catch (const Base::Exception& e) {
+        PyErr_SetString(PartExceptionOCCError,e.what());
+        return NULL;
+    }
+
+    Py_Return;
+}
+
 PyObject*  TopoShapePy::importBrepFromString(PyObject *args)
 {
     char* input;