0030670: Modeling Algorithms - Performance improvement of Boolean Operations algorithm

The following improvements have been made in Boolean operations algorithm:
1. Added possibility to update FaceInfo structure for many faces at once which helps to avoid nested loops.
2. Improve Point-Face classification procedure by caching the FaceExplorer for a face.

src/IntTools/IntTools_FClass2d.hxx

@@ -21,16 +21,18 @@
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
+#include <BRepClass_FaceExplorer.hxx>
 #include <BRepTopAdaptor_SeqOfPtr.hxx>
 #include <TColStd_SequenceOfInteger.hxx>
 #include <Standard_Real.hxx>
 #include <TopoDS_Face.hxx>
 #include <Standard_Boolean.hxx>
 #include <TopAbs_State.hxx>
+#include <memory>
+
 class TopoDS_Face;
 class gp_Pnt2d;
 
-
 //! Class provides an algorithm to classify a 2d Point
 //! in 2d space of face using boundaries of the face.
 class IntTools_FClass2d 
@@ -108,6 +110,15 @@ private:
   Standard_Real Vmax;
   Standard_Boolean myIsHole;
 
+#ifdef _MSC_VER
+#if _MSC_VER < 1600
+  mutable std::auto_ptr<BRepClass_FaceExplorer> myFExplorer;
+#else
+  mutable std::unique_ptr<BRepClass_FaceExplorer> myFExplorer;
+#endif
+#else
+  mutable std::unique_ptr<BRepClass_FaceExplorer> myFExplorer;
+#endif
 
 };