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 // Created on: 1996-12-30
 // Created by: Stagiaire Mary FABIEN
 // Copyright (c) 1996-1999 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 _BRepBuilderAPI_GTransform_HeaderFile
 #define _BRepBuilderAPI_GTransform_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 
 #include <gp_GTrsf.hxx>
 #include <BRepBuilderAPI_Collect.hxx>
 #include <BRepBuilderAPI_ModifyShape.hxx>
 #include <TopTools_ListOfShape.hxx>
 class TopoDS_Shape;
 
 
 //! Geometric transformation on a shape.
 //! The transformation to be applied is defined as a gp_GTrsf
 //! transformation. It may be:
 //! -      a transformation equivalent to a gp_Trsf transformation, the
 //! most common case: you should , however, use a BRepAPI_Transform
 //! object to perform this kind of transformation; or
 //! -      an affinity, or
 //! -      more generally, any type of point transformation which may
 //! be defined by a three row, four column matrix of transformation.
 //! In the last two cases, the underlying geometry of the
 //! following shapes may change:
 //! -      a curve which supports an edge of the shape, or
 //! -      a surface which supports a face of the shape;
 //! For example, a circle may be transformed into an ellipse when
 //! applying an affinity transformation.
 //! The transformation is applied to:
 //! -      all the curves which support edges of the shape, and
 //! -      all the surfaces which support faces of the shape.
 //! A GTransform object provides a framework for:
 //! -      defining the geometric transformation to be applied,
 //! -      implementing the transformation algorithm, and
 //! -      consulting the result.
 class BRepBuilderAPI_GTransform  : public BRepBuilderAPI_ModifyShape
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
   //! Constructs a framework for applying the geometric
   //! transformation T to a shape. Use the function
   //! Perform to define the shape to transform.
   Standard_EXPORT BRepBuilderAPI_GTransform(const gp_GTrsf& T);
   
   //! Constructs a framework for applying the geometric
   //! transformation T to a shape, and applies it to the shape S.
   //! -   If the transformation T is direct and isometric (i.e. if
   //! the determinant of the vectorial part of T is equal to
   //! 1.), and if Copy equals false (default value), the
   //! resulting shape is the same as the original but with
   //! a new location assigned to it.
   //! -   In all other cases, the transformation is applied to
   //! a duplicate of S.
   //! Use the function Shape to access the result.
   //! Note: the constructed framework can be reused to
   //! apply the same geometric transformation to other
   //! shapes: just specify them with the function Perform.
   Standard_EXPORT BRepBuilderAPI_GTransform(const TopoDS_Shape& S, const gp_GTrsf& T, const Standard_Boolean Copy = Standard_False);
   
   //! Applies the geometric transformation defined at the
   //! time of construction of this framework to the shape S.
   //! -   If the transformation T is direct and isometric (i.e. if
   //! the determinant of the vectorial part of T is equal to
   //! 1.), and if Copy equals false (default value), the
   //! resulting shape is the same as the original but with
   //! a new location assigned to it.
   //! -   In all other cases, the transformation is applied to a duplicate of S.
   //! Use the function Shape to access the result.
   //! Note: this framework can be reused to apply the same
   //! geometric transformation to other shapes: just specify
   //! them by calling the function Perform again.
   Standard_EXPORT void Perform (const TopoDS_Shape& S, const Standard_Boolean Copy = Standard_False);
   
   //! Returns the list  of shapes modified from the shape
   //! <S>.
   Standard_EXPORT virtual const TopTools_ListOfShape& Modified (const TopoDS_Shape& S) Standard_OVERRIDE;
   
   //! Returns the modified shape corresponding to <S>.
   Standard_EXPORT virtual TopoDS_Shape ModifiedShape (const TopoDS_Shape& S) const Standard_OVERRIDE;
 
 
 
 
 protected:
 
 
 
 
 
 private:
 
 
 
   gp_GTrsf myGTrsf;
   BRepBuilderAPI_Collect myHist;
 
 
 };
 
 
 
 
 
 
 
 #endif // _BRepBuilderAPI_GTransform_HeaderFile

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