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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 |
| 5 | // |
| 6 | // This file is part of Open CASCADE Technology software library. |
| 7 | // |
| 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. |
| 13 | // |
| 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
| 16 | |
| 17 | #ifndef _Extrema_LocateExtCC_HeaderFile |
| 18 | #define _Extrema_LocateExtCC_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Standard_Boolean.hxx> |
| 25 | #include <Standard_Real.hxx> |
| 26 | #include <Extrema_POnCurv.hxx> |
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27 | class Adaptor3d_Curve; |
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28 | |
| 29 | |
| 30 | //! It calculates the distance between two curves with |
| 31 | //! a close point; these distances can be maximum or |
| 32 | //! minimum. |
| 33 | class Extrema_LocateExtCC |
| 34 | { |
| 35 | public: |
| 36 | |
| 37 | DEFINE_STANDARD_ALLOC |
| 38 | |
| 39 | |
| 40 | //! Calculates the distance with a close point. The |
| 41 | //! close point is defined by a parameter value on each |
| 42 | //! curve. |
| 43 | //! The function F(u,v)=distance(C1(u),C2(v)) has an |
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44 | //! extremun when gradient(f)=0. The algorithm searches |
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45 | //! the zero near the close point. |
| 46 | Standard_EXPORT Extrema_LocateExtCC(const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real U0, const Standard_Real V0); |
| 47 | |
| 48 | //! Returns True if the distance is found. |
| 49 | Standard_EXPORT Standard_Boolean IsDone() const; |
| 50 | |
| 51 | //! Returns the value of the extremum square distance. |
| 52 | Standard_EXPORT Standard_Real SquareDistance() const; |
| 53 | |
| 54 | //! Returns the points of the extremum distance. |
| 55 | //! P1 is on the first curve, P2 on the second one. |
| 56 | Standard_EXPORT void Point (Extrema_POnCurv& P1, Extrema_POnCurv& P2) const; |
| 57 | |
| 58 | |
| 59 | |
| 60 | |
| 61 | protected: |
| 62 | |
| 63 | |
| 64 | |
| 65 | |
| 66 | |
| 67 | private: |
| 68 | |
| 69 | |
| 70 | |
| 71 | Standard_Boolean myDone; |
| 72 | Standard_Real mySqDist; |
| 73 | Extrema_POnCurv myPoint1; |
| 74 | Extrema_POnCurv myPoint2; |
| 75 | |
| 76 | |
| 77 | }; |
| 78 | |
| 79 | |
| 80 | |
| 81 | |
| 82 | |
| 83 | |
| 84 | |
| 85 | #endif // _Extrema_LocateExtCC_HeaderFile |
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