text: // Created on: 1998-10-06
  // Created by: Jean Yves LEBEY
  // Copyright (c) 1998-1999 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 _TopOpeBRepTool_GEOMETRY_HeaderFile
  #define _TopOpeBRepTool_GEOMETRY_HeaderFile
  
  #include <TopOpeBRepTool_define.hxx>
  
  #include <GeomAbs_CurveType.hxx>
  #include <Geom2d_Curve.hxx>
  #include <Geom_Curve.hxx>
  #include <Geom_Surface.hxx>
  #include <gp_Pnt2d.hxx>
  #include <gp_Dir.hxx>
  #include <gp_Dir2d.hxx>
  #include <Bnd_Box2d.hxx>
  
  Standard_EXPORT Handle(Geom2d_Curve) BASISCURVE2D(const Handle(Geom2d_Curve)& C);
  //Standard_EXPORT Standard_Boolean FUN_tool_IsUViso(const Handle(Geom2d_Curve)& PC,Standard_Boolean& isoU,Standard_Boolean& isoV,gp_Dir2d& d2d,gp_Pnt2d& O2d);
  Standard_EXPORT gp_Dir FUN_tool_dirC(const Standard_Real par,const Handle(Geom_Curve)& C);
  Standard_EXPORT Standard_Boolean FUN_tool_onapex(const gp_Pnt2d& p2d,const Handle(Geom_Surface)& S);
  Standard_EXPORT gp_Dir FUN_tool_ngS(const gp_Pnt2d& p2d,const Handle(Geom_Surface)& S);
  
  // ----------------------------------------------------------------------
  // curve type,surface type :
  // ----------------------------------------------------------------------
  Standard_EXPORT Standard_Boolean FUN_tool_line(const Handle(Geom_Curve)& C3d);
  Standard_EXPORT Standard_Boolean FUN_tool_line(const Handle(Geom2d_Curve)& C2d);
  Standard_EXPORT Standard_Boolean FUN_quadCT(const GeomAbs_CurveType& CT);
  Standard_EXPORT Standard_Boolean FUN_tool_quad(const Handle(Geom_Curve)& C3d);
  Standard_EXPORT Standard_Boolean FUN_tool_quad(const Handle(Geom2d_Curve)& pc);
  Standard_EXPORT Standard_Boolean FUN_tool_quad(const Handle(Geom_Surface)& S);
  Standard_EXPORT Standard_Boolean FUN_tool_closed(const Handle(Geom_Surface)& S,Standard_Boolean& uclosed,Standard_Real& uperiod,Standard_Boolean& vclosed,Standard_Real& vperiod);
  Standard_EXPORT void FUN_tool_UpdateBnd2d(Bnd_Box2d& B2d,const Bnd_Box2d& newB2d);
  
  // ----------------------------------------------------------------------
  // oriented vectors :
  // ----------------------------------------------------------------------
  Standard_EXPORT gp_Dir FUN_tool_nCinsideS(const gp_Dir& tgC,const gp_Dir& ngS);
  Standard_EXPORT gp_Dir2d FUN_tool_nC2dINSIDES(const gp_Dir2d& tgC2d);
  
  #endif
  