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 // Created on: 1994-12-22
 // Created by: Remi LEQUETTE
 // Copyright (c) 1994-1999 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 _BRepTools_Quilt_HeaderFile
 #define _BRepTools_Quilt_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 
 #include <TopTools_IndexedDataMapOfShapeShape.hxx>
 class TopoDS_Edge;
 class TopoDS_Vertex;
 class TopoDS_Shape;
 
 
 //! A Tool to glue faces at common edges and reconstruct shells.
 //!
 //! The user designate pairs of common edges using the method Bind.
 //! One edge is designated as the edge to use in place of the other one
 //! (they are supposed to be geometrically confused, but this not checked).
 //! They can be of opposite directions, this is specified by the orientations.
 //!
 //! The user can add shapes with the Add method, all the faces are registered and copies of faces
 //! and edges are made to glue at the bound edges.
 //!
 //! The user can call the Shells methods to compute a compound of shells from the current set of faces.
 //!
 //! If no binding is made this class can be used to make shell from faces already sharing their edges.
 class BRepTools_Quilt 
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
   Standard_EXPORT BRepTools_Quilt();
   
   //! Binds <Enew> to   be  the  new edge  instead   of
   //! <Eold>.
   //!
   //! The faces  of  the added  shape containing  <Eold>
   //! will be copied to substitute <Eold> by <Enew>.
   //!
   //! The vertices  of   <Eold> will   be bound to   the
   //! vertices of <Enew> with the same orientation.
   //!
   //! If <Eold>  and <Enew>  have different orientations
   //! the curves are considered  to be opposite  and the
   //! pcurves of <Eold>  will be copied  and reversed in
   //! the new faces.
   //!
   //! <Eold> must belong to the next added shape, <Enew> must belong
   //! to a Shape added before.
   Standard_EXPORT void Bind (const TopoDS_Edge& Eold, const TopoDS_Edge& Enew);
   
   //! Binds <VNew> to be a new vertex instead of <Vold>.
   //!
   //! The faces  of  the added  shape containing  <Vold>
   //! will be copied to substitute <Vold> by <Vnew>.
   Standard_EXPORT void Bind (const TopoDS_Vertex& Vold, const TopoDS_Vertex& Vnew);
   
   //! Add   the faces of  <S>  to  the Quilt,  the faces
   //! containing bounded edges are copied.
   Standard_EXPORT void Add (const TopoDS_Shape& S);
   
   //! Returns   True if <S> has   been  copied (<S> is a
   //! vertex, an edge or a face)
   Standard_EXPORT Standard_Boolean IsCopied (const TopoDS_Shape& S) const;
   
   //! Returns the shape substituted to <S> in the Quilt.
   Standard_EXPORT const TopoDS_Shape& Copy (const TopoDS_Shape& S) const;
   
   //! Returns a Compound of shells made from the current
   //! set of faces. The shells will be flagged as closed
   //! or not closed.
   Standard_EXPORT TopoDS_Shape Shells() const;
 
 
 
 
 protected:
 
 
 
 
 
 private:
 
 
 
   TopTools_IndexedDataMapOfShapeShape myBounds;
   Standard_Boolean hasCopy;
 
 
 };
 
 
 
 
 
 
 
 #endif // _BRepTools_Quilt_HeaderFile

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