0025039: Improvement of code structure of general and supporting tools implemented in BRepMesh

Removed CDL declarations; Data collections are replaced by NCollections; Small code refactoring.
Remove definition of BRepMesh class. Code refactoring of BRepMesh_IncrementalMesh.
Function BRepMesh_Write storing BRepMesh_DataStructureOfDelaun to BRep file is added for debug needs.
Static method BRepMesh_GeomTool::IntLinLin has been added to eliminate code duplications in BRepMesh_Dealun and BRepMesh_CircleTool.
BRepMesh_CircleTool simplified method to find circumcircle.

Fix merging conflicts
Remove redundant function
Fix compilation warning on MacOS
Revert changes occurred during rebase
Resolved merging conflicts
Use parallel flag with BRepMesh_FastDiscret

Test cases for issue CR25039_2

src/BRepMesh/BRepMesh_DiscretFactory.hxx

@@ -0,0 +1,118 @@
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _BRepMesh_DiscretFactory_HeaderFile
+#define _BRepMesh_DiscretFactory_HeaderFile
+
+#include <Standard.hxx>
+#include <Standard_DefineAlloc.hxx>
+#include <Standard_Macro.hxx>
+#include <BRepMesh_PluginEntryType.hxx>
+#include <BRepMesh_FactoryError.hxx>
+#include <TColStd_MapOfAsciiString.hxx>
+#include <TCollection_AsciiString.hxx>
+#include <Plugin_MapOfFunctions.hxx>
+#include <BRepMesh_DiscretRoot.hxx>
+
+class TColStd_MapOfAsciiString;
+class TCollection_AsciiString;
+class BRepMesh_DiscretRoot;
+class TopoDS_Shape;
+
+//! This class intended to setup / retrieve default triangulation algorithm. <br>
+//! Use BRepMesh_DiscretFactory::Get() static method to retrieve global Factory instance. <br>
+//! Use BRepMesh_DiscretFactory::Discret() method to retrieve meshing tool. <br>
+class BRepMesh_DiscretFactory
+{
+public:
+
+  DEFINE_STANDARD_ALLOC
+  
+  //! Returns the global factory instance.
+  Standard_EXPORT static BRepMesh_DiscretFactory& Get();
+  
+  //! Returns the list of registered meshing algorithms.
+  inline const TColStd_MapOfAsciiString& Names() const
+  {
+    return myNames;
+  }
+  
+  //! Setup meshing algorithm by name. <br>
+  //! Returns TRUE if requested tool is available. <br>
+  //! On fail Factory will continue to use previous algo.
+  Standard_EXPORT Standard_Boolean SetDefaultName(const TCollection_AsciiString& theName)
+  {
+    return SetDefault(theName, myFunctionName);
+  }
+  
+  //! Returns name for current meshing algorithm.
+  inline const TCollection_AsciiString& DefaultName() const
+  {
+    return myDefaultName;
+  }
+  
+  //! Advanced function. Changes function name to retrieve from plugin. <br>
+  //! Returns TRUE if requested tool is available. <br>
+  //! On fail Factory will continue to use previous algo.
+  Standard_EXPORT Standard_Boolean SetFunctionName(const TCollection_AsciiString& theFuncName)
+  {
+    return SetDefault(myDefaultName, theFuncName);
+  }
+  
+  //! Returns function name that should be exported by plugin.
+  inline const TCollection_AsciiString& FunctionName() const
+  {
+    return myFunctionName;
+  }
+  
+  //! Returns error status for last meshing algorithm switch.
+  inline BRepMesh_FactoryError ErrorStatus() const
+  {
+    return myErrorStatus;
+  }
+
+  //! Setup meshing algorithm that should be created by this Factory. <br>
+  //! Returns TRUE if requested tool is available. <br>
+  //! On fail Factory will continue to use previous algo. <br>
+  //! Call ::ErrorStatus() method to retrieve fault reason.
+  Standard_EXPORT Standard_Boolean SetDefault(const TCollection_AsciiString& theName,
+                                              const TCollection_AsciiString& theFuncName = "DISCRETALGO");
+
+  //! Returns triangulation algorithm instance.
+  //! \param theShape shape to be meshed.
+  //! \param theLinDeflection linear deflection to be used for meshing.
+  //! \param theAngDeflection angular deflection to be used for meshing.
+  Standard_EXPORT Handle(BRepMesh_DiscretRoot) Discret(const TopoDS_Shape& theShape,
+                                                       const Standard_Real theLinDeflection,
+                                                       const Standard_Real theAngDeflection);
+
+protected:
+  
+  //! Constructor
+  Standard_EXPORT BRepMesh_DiscretFactory();
+
+  //! Destructor
+  Standard_EXPORT virtual ~BRepMesh_DiscretFactory();
+
+  //! Clears factory data.
+  Standard_EXPORT void clear();
+
+  BRepMesh_PluginEntryType  myPluginEntry;
+  BRepMesh_FactoryError     myErrorStatus;
+  TColStd_MapOfAsciiString  myNames;
+  TCollection_AsciiString   myDefaultName;
+  TCollection_AsciiString   myFunctionName;
+  Plugin_MapOfFunctions     myFactoryMethods;
+};
+
+#endif