1 // Created on: 1991-02-26
2 // Created by: Isabelle GRIGNON
3 // Copyright (c) 1991-1999 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_LocECC_HeaderFile
18 #define _Extrema_LocECC_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 #include <Extrema_SequenceOfPOnCurv.hxx>
29 class Standard_DomainError;
30 class StdFail_NotDone;
31 class Adaptor3d_Curve;
32 class Extrema_CurveTool;
33 class Extrema_POnCurv;
36 class Extrema_CCLocFOfLocECC;
45 //! Calculates the distance with a close point. The
46 //! close point is defined by a parameter value on each
48 //! The function F(u,v)=distance(C1(u),C2(v)) has an
49 //! extremun when gradient(f)=0. The algorithm searchs
50 //! the zero near the close point.
51 Standard_EXPORT Extrema_LocECC(const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real U0, const Standard_Real V0, const Standard_Real TolU, const Standard_Real TolV);
53 //! Returns True if the distance is found.
54 Standard_EXPORT Standard_Boolean IsDone() const;
56 //! Returns the value of the extremum square distance.
57 Standard_EXPORT Standard_Real SquareDistance() const;
59 //! Returns the points of the extremum distance.
60 //! P1 is on the first curve, P2 on the second one.
61 Standard_EXPORT void Point (Extrema_POnCurv& P1, Extrema_POnCurv& P2) const;
76 Standard_Boolean myDone;
77 Standard_Real mySqDist;
78 Extrema_POnCurv myPoint1;
79 Extrema_POnCurv myPoint2;
90 #endif // _Extrema_LocECC_HeaderFile