1 // Created on: 1994-07-06
2 // Created by: Laurent PAINNOT
3 // Copyright (c) 1994-1999 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 _Extrema_LocateExtCC_HeaderFile
18 #define _Extrema_LocateExtCC_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Boolean.hxx>
25 #include <Standard_Real.hxx>
26 #include <Extrema_POnCurv.hxx>
27 class Standard_DomainError;
28 class StdFail_NotDone;
29 class Adaptor3d_Curve;
30 class Extrema_POnCurv;
33 //! It calculates the distance between two curves with
34 //! a close point; these distances can be maximum or
36 class Extrema_LocateExtCC
43 //! Calculates the distance with a close point. The
44 //! close point is defined by a parameter value on each
46 //! The function F(u,v)=distance(C1(u),C2(v)) has an
47 //! extremun when gradient(f)=0. The algorithm searchs
48 //! the zero near the close point.
49 Standard_EXPORT Extrema_LocateExtCC(const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real U0, const Standard_Real V0);
51 //! Returns True if the distance is found.
52 Standard_EXPORT Standard_Boolean IsDone() const;
54 //! Returns the value of the extremum square distance.
55 Standard_EXPORT Standard_Real SquareDistance() const;
57 //! Returns the points of the extremum distance.
58 //! P1 is on the first curve, P2 on the second one.
59 Standard_EXPORT void Point (Extrema_POnCurv& P1, Extrema_POnCurv& P2) const;
74 Standard_Boolean myDone;
75 Standard_Real mySqDist;
76 Extrema_POnCurv myPoint1;
77 Extrema_POnCurv myPoint2;
88 #endif // _Extrema_LocateExtCC_HeaderFile