1 // Created on: 1991-04-03
2 // Created by: Remi GILET
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 _GccAna_Lin2dBisec_HeaderFile
18 #define _GccAna_Lin2dBisec_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Boolean.hxx>
25 #include <Standard_Integer.hxx>
26 #include <TColgp_Array1OfLin2d.hxx>
27 #include <TColgp_Array1OfPnt2d.hxx>
28 #include <TColStd_Array1OfReal.hxx>
29 #include <Standard_Real.hxx>
30 class Standard_OutOfRange;
31 class StdFail_NotDone;
36 //! Describes functions for building bisecting lines between two 2D lines.
37 //! A bisecting line between two lines is such that each of its
38 //! points is at the same distance from the two lines.
39 //! If the two lines are secant, there are two orthogonal
40 //! bisecting lines which share the angles made by the two
41 //! straight lines in two equal parts. If D1 and D2 are the
42 //! unit vectors of the two straight lines, those of the two
43 //! bisecting lines are collinear with the following vectors:
44 //! - D1 + D2 for the "internal" bisecting line,
45 //! - D1 - D2 for the "external" bisecting line.
46 //! If the two lines are parallel, the (unique) bisecting line is
47 //! the straight line equidistant from the two straight lines. If
48 //! the two straight lines are coincident, the algorithm
49 //! returns the first straight line as the solution.
50 //! A Lin2dTanObl object provides a framework for:
51 //! - defining the construction of the bisecting lines,
52 //! - implementing the construction algorithm, and
53 //! - consulting the result.
54 class GccAna_Lin2dBisec
61 //! Constructs bisecting lines between the two lines Lin1 and Lin2.
62 Standard_EXPORT GccAna_Lin2dBisec(const gp_Lin2d& Lin1, const gp_Lin2d& Lin2);
64 //! Returns True when the algorithm succeded.
65 Standard_EXPORT Standard_Boolean IsDone() const;
67 //! Returns the number of solutions and raise NotDone if
68 //! the constructor wasn't called before.
69 Standard_EXPORT Standard_Integer NbSolutions() const;
71 //! Returns the solution number Index .
72 //! The first solution is the inside one and the second is the
74 //! For the first solution the direction is D1+D2 (D1 is
75 //! the direction of the first argument and D2 the
76 //! direction of the second argument).
77 //! For the second solution the direction is D1-D2.
78 //! Raises NotDone if the construction algorithm
80 //! It raises OutOfRange if Index is greater than the
81 //! number of solutions.
82 Standard_EXPORT gp_Lin2d ThisSolution (const Standard_Integer Index) const;
84 //! Returns informations about the intersection point between
85 //! the result number Index and the first argument.
86 //! Raises NotDone if the construction algorithm didn't succeed.
87 //! It raises OutOfRange if Index is greater than the
88 //! number of solutions.
89 Standard_EXPORT void Intersection1 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const;
91 //! Returns informations about the intersection point between
92 //! the result number Index and the second argument.
93 //! Raises NotDone if the construction algorithm
95 //! It raises OutOfRange if Index is greater than the
96 //! number of solutions.
97 Standard_EXPORT void Intersection2 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const;
112 Standard_Boolean WellDone;
113 Standard_Integer NbrSol;
114 TColgp_Array1OfLin2d linsol;
115 TColgp_Array1OfPnt2d pntint1sol;
116 TColgp_Array1OfPnt2d pntint2sol;
117 TColStd_Array1OfReal par1sol;
118 TColStd_Array1OfReal par2sol;
119 TColStd_Array1OfReal pararg1;
120 TColStd_Array1OfReal pararg2;
131 #endif // _GccAna_Lin2dBisec_HeaderFile