1 // Created on: 1992-03-26
2 // Created by: Laurent BUCHARD
3 // Copyright (c) 1992-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _IntCurve_IConicTool_HeaderFile
18 #define _IntCurve_IConicTool_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Real.hxx>
25 #include <gp_Ax22d.hxx>
26 #include <GeomAbs_CurveType.hxx>
27 #include <gp_Trsf2d.hxx>
37 //! Implementation of the ImpTool from IntImpParGen
39 class IntCurve_IConicTool
46 Standard_EXPORT IntCurve_IConicTool();
48 Standard_EXPORT IntCurve_IConicTool(const IntCurve_IConicTool& IT);
50 Standard_EXPORT IntCurve_IConicTool(const gp_Elips2d& E);
52 Standard_EXPORT IntCurve_IConicTool(const gp_Lin2d& L);
54 Standard_EXPORT IntCurve_IConicTool(const gp_Circ2d& C);
56 Standard_EXPORT IntCurve_IConicTool(const gp_Parab2d& P);
58 Standard_EXPORT IntCurve_IConicTool(const gp_Hypr2d& H);
60 Standard_EXPORT gp_Pnt2d Value (const Standard_Real X) const;
62 Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T) const;
64 Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& T, gp_Vec2d& N) const;
66 //! Computes the value of the signed distance between
67 //! the point P and the implicit curve.
68 Standard_EXPORT Standard_Real Distance (const gp_Pnt2d& P) const;
70 //! Computes the Gradient of the Signed Distance
71 //! between a point and the implicit curve, at the
73 Standard_EXPORT gp_Vec2d GradDistance (const gp_Pnt2d& P) const;
75 //! Returns the parameter U of the point on the
76 //! implicit curve corresponding to the point P. The
77 //! correspondance between P and the point P(U) on the
78 //! implicit curve must be coherent with the way of
79 //! determination of the signed distance.
80 Standard_EXPORT Standard_Real FindParameter (const gp_Pnt2d& P) const;
99 GeomAbs_CurveType type;
100 gp_Trsf2d Abs_To_Object;
111 #endif // _IntCurve_IConicTool_HeaderFile