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 // Created on: 1991-02-21
 // Created by: Remi Lequette
 // Copyright (c) 1991-1999 Matra Datavision
 // Copyright (c) 1999-2014 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 _TopoDS_Builder_HeaderFile
 #define _TopoDS_Builder_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 class TopoDS_Shape;
 class TopoDS_TShape;
 class TopoDS_Wire;
 class TopoDS_Shell;
 class TopoDS_Solid;
 class TopoDS_CompSolid;
 class TopoDS_Compound;
 
 
 //! A  Builder is used   to  create  Topological  Data
 //! Structures.It is the root of the Builder class hierarchy.
 //!
 //! There are three groups of methods in the Builder :
 //!
 //! The Make methods create Shapes.
 //!
 //! The Add method includes a Shape in another Shape.
 //!
 //! The Remove  method  removes a  Shape from an other
 //! Shape.
 //!
 //! The methods in Builder are not static. They can be
 //! redefined in inherited builders.
 //!
 //! This   Builder does not  provide   methods to Make
 //! Vertices,  Edges, Faces,  Shells  or Solids. These
 //! methods are  provided  in  the inherited  Builders
 //! as they must provide the geometry.
 //!
 //! The Add method check for the following rules :
 //!
 //! - Any SHAPE can be added in a COMPOUND.
 //!
 //! - Only SOLID can be added in a COMPSOLID.
 //!
 //! - Only SHELL, EDGE and VERTEX can be added in a SOLID.
 //! EDGE and VERTEX as to be INTERNAL or EXTERNAL.
 //!
 //! - Only FACE can be added in a SHELL.
 //!
 //! - Only WIRE and VERTEX can be added in a FACE.
 //! VERTEX as to be INTERNAL or EXTERNAL.
 //!
 //! - Only EDGE can be added in a WIRE.
 //!
 //! - Only VERTEX can be added in an EDGE.
 //!
 //! - Nothing can be added in a VERTEX.
 class TopoDS_Builder 
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
   //! Make an empty Wire.
     void MakeWire (TopoDS_Wire& W) const;
   
   //! Make an empty Shell.
     void MakeShell (TopoDS_Shell& S) const;
   
   //! Make a Solid covering the whole 3D space.
     void MakeSolid (TopoDS_Solid& S) const;
   
   //! Make an empty Composite Solid.
     void MakeCompSolid (TopoDS_CompSolid& C) const;
   
   //! Make an empty Compound.
     void MakeCompound (TopoDS_Compound& C) const;
   
   //! Add the Shape C in the Shape S.
   //! Exceptions
   //! - TopoDS_FrozenShape if S is not free and cannot be modified.
   //! - TopoDS__UnCompatibleShapes if S and C are not compatible.
   Standard_EXPORT void Add (TopoDS_Shape& S, const TopoDS_Shape& C) const;
   
   //! Remove the Shape C from the Shape S.
   //! Exceptions
   //! TopoDS_FrozenShape if S is frozen and cannot be modified.
   Standard_EXPORT void Remove (TopoDS_Shape& S, const TopoDS_Shape& C) const;
 
 
 
 
 protected:
 
   
   //! The basic method to make  a Shape, used by all the
   //! Make methods.
   Standard_EXPORT void MakeShape (TopoDS_Shape& S, const Handle(TopoDS_TShape)& T) const;
 
 
 
 
 private:
 
 
 
 
 
 };
 
 
 #include <TopoDS_Builder.lxx>
 
 
 
 
 
 #endif // _TopoDS_Builder_HeaderFile

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