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_ExtCC2d_HeaderFile
18 #define _Extrema_ExtCC2d_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Boolean.hxx>
25 #include <Extrema_SequenceOfPOnCurv2d.hxx>
26 #include <TColStd_SequenceOfReal.hxx>
27 #include <Standard_Integer.hxx>
28 #include <Standard_Address.hxx>
29 #include <Standard_Real.hxx>
30 #include <gp_Pnt2d.hxx>
32 class Adaptor2d_Curve2d;
33 class Extrema_POnCurv2d;
35 class Extrema_ExtElC2d;
39 //! It calculates all the distance between two curves.
40 //! These distances can be maximum or minimum.
48 Standard_EXPORT Extrema_ExtCC2d();
50 //! It calculates all the distances.
51 Standard_EXPORT Extrema_ExtCC2d(const Adaptor2d_Curve2d& C1, const Adaptor2d_Curve2d& C2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10);
53 //! It calculates all the distances.
54 Standard_EXPORT Extrema_ExtCC2d(const Adaptor2d_Curve2d& C1, const Adaptor2d_Curve2d& C2, const Standard_Real U1, const Standard_Real U2, const Standard_Real V1, const Standard_Real V2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10);
56 //! initializes the fields.
57 Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C2, const Standard_Real V1, const Standard_Real V2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10);
59 Standard_EXPORT void Perform (const Adaptor2d_Curve2d& C1, const Standard_Real U1, const Standard_Real U2);
61 //! Returns True if the distances are found.
62 Standard_EXPORT Standard_Boolean IsDone() const;
64 //! Returns the number of extremum distances.
65 Standard_EXPORT Standard_Integer NbExt() const;
67 //! Returns True if the two curves are parallel.
68 Standard_EXPORT Standard_Boolean IsParallel() const;
70 //! Returns the value of the Nth extremum square distance.
71 Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N = 1) const;
73 //! Returns the points of the Nth extremum distance.
74 //! P1 is on the first curve, P2 on the second one.
75 Standard_EXPORT void Points (const Standard_Integer N, Extrema_POnCurv2d& P1, Extrema_POnCurv2d& P2) const;
77 //! if the curve is a trimmed curve,
78 //! dist11 is a square distance between the point on C1
79 //! of parameter FirstParameter and the point of
80 //! parameter FirstParameter on C2.
81 Standard_EXPORT void TrimmedSquareDistances (Standard_Real& dist11, Standard_Real& distP12, Standard_Real& distP21, Standard_Real& distP22, gp_Pnt2d& P11, gp_Pnt2d& P12, gp_Pnt2d& P21, gp_Pnt2d& P22) const;
83 //! Set flag for single extrema computation. Works on parametric solver only.
84 Standard_EXPORT void SetSingleSolutionFlag (const Standard_Boolean theSingleSolutionFlag);
86 //! Get flag for single extrema computation. Works on parametric solver only.
87 Standard_EXPORT Standard_Boolean GetSingleSolutionFlag () const;
93 Standard_EXPORT void Results (const Extrema_ExtElC2d& AlgExt, const Standard_Real Ut11, const Standard_Real Ut12, const Standard_Real Ut21, const Standard_Real Ut22, const Standard_Real Period1 = 0.0, const Standard_Real Period2 = 0.0);
95 Standard_EXPORT void Results (const Extrema_ECC2d& AlgExt, const Standard_Real Ut11, const Standard_Real Ut12, const Standard_Real Ut21, const Standard_Real Ut22, const Standard_Real Period1 = 0.0, const Standard_Real Period2 = 0.0);
103 Standard_Boolean myIsFindSingleSolution; // Default value is false.
104 Standard_Boolean myDone;
105 Standard_Boolean myIsPar;
106 Extrema_SequenceOfPOnCurv2d mypoints;
107 TColStd_SequenceOfReal mySqDist;
108 Standard_Integer mynbext;
109 Standard_Boolean inverse;
110 Standard_Address myC;
113 Standard_Real mytolc1;
114 Standard_Real mytolc2;
119 Standard_Real mydist11;
120 Standard_Real mydist12;
121 Standard_Real mydist21;
122 Standard_Real mydist22;
133 #endif // _Extrema_ExtCC2d_HeaderFile