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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> |
27 | class Standard_DomainError; |
28 | class StdFail_NotDone; |
29 | class Adaptor3d_Curve; |
30 | class Extrema_POnCurv; |
31 | |
32 | |
33 | //! It calculates the distance between two curves with |
34 | //! a close point; these distances can be maximum or |
35 | //! minimum. |
36 | class Extrema_LocateExtCC |
37 | { |
38 | public: |
39 | |
40 | DEFINE_STANDARD_ALLOC |
41 | |
42 | |
43 | //! Calculates the distance with a close point. The |
44 | //! close point is defined by a parameter value on each |
45 | //! curve. |
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); |
50 | |
51 | //! Returns True if the distance is found. |
52 | Standard_EXPORT Standard_Boolean IsDone() const; |
53 | |
54 | //! Returns the value of the extremum square distance. |
55 | Standard_EXPORT Standard_Real SquareDistance() const; |
56 | |
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; |
60 | |
61 | |
62 | |
63 | |
64 | protected: |
65 | |
66 | |
67 | |
68 | |
69 | |
70 | private: |
71 | |
72 | |
73 | |
74 | Standard_Boolean myDone; |
75 | Standard_Real mySqDist; |
76 | Extrema_POnCurv myPoint1; |
77 | Extrema_POnCurv myPoint2; |
78 | |
79 | |
80 | }; |
81 | |
82 | |
83 | |
84 | |
85 | |
86 | |
87 | |
88 | #endif // _Extrema_LocateExtCC_HeaderFile |