1 // Created on: 1994-02-01
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_ExtPS_HeaderFile
18 #define _Extrema_ExtPS_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Adaptor3d_SurfacePtr.hxx>
25 #include <Standard_Boolean.hxx>
26 #include <Extrema_ExtPElS.hxx>
27 #include <Extrema_GenExtPS.hxx>
28 #include <Extrema_SequenceOfPOnSurf.hxx>
29 #include <Standard_Real.hxx>
31 #include <TColStd_SequenceOfReal.hxx>
32 #include <GeomAbs_SurfaceType.hxx>
33 #include <Extrema_ExtFlag.hxx>
34 #include <Extrema_ExtAlgo.hxx>
35 #include <Standard_Integer.hxx>
36 class Extrema_ExtPExtS;
37 class Extrema_ExtPRevS;
38 class StdFail_NotDone;
39 class Standard_OutOfRange;
40 class Standard_TypeMismatch;
42 class Adaptor3d_Surface;
43 class Extrema_POnSurf;
46 //! It calculates all the extremum distances
47 //! between a point and a surface.
48 //! These distances can be minimum or maximum.
56 Standard_EXPORT Extrema_ExtPS();
58 //! It calculates all the distances.
59 //! NbU and NbV are used to locate the close points
60 //! to find the zeros. They must be great enough
61 //! such that if there is N extrema, there will
62 //! be N extrema between P and the grid.
63 //! TolU et TolV are used to determine the conditions
64 //! to stop the iterations; at the iteration number n:
65 //! (Un - Un-1) < TolU and (Vn - Vn-1) < TolV .
66 Standard_EXPORT Extrema_ExtPS(const gp_Pnt& P, const Adaptor3d_Surface& S, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F = Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A = Extrema_ExtAlgo_Grad);
68 //! It calculates all the distances.
69 //! NbU and NbV are used to locate the close points
70 //! to find the zeros. They must be great enough
71 //! such that if there is N extrema, there will
72 //! be N extrema between P and the grid.
73 //! TolU et TolV are used to determine the conditions
74 //! to stop the iterations; at the iteration number n:
75 //! (Un - Un-1) < TolU and (Vn - Vn-1) < TolV .
76 Standard_EXPORT Extrema_ExtPS(const gp_Pnt& P, const Adaptor3d_Surface& S, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real Vinf, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F = Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A = Extrema_ExtAlgo_Grad);
78 //! Initializes the fields of the algorithm.
79 Standard_EXPORT void Initialize (const Adaptor3d_Surface& S, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real Vinf, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV);
81 //! Computes the distances.
82 //! An exception is raised if the fieds have not been
84 Standard_EXPORT void Perform (const gp_Pnt& P);
86 //! Returns True if the distances are found.
87 Standard_EXPORT Standard_Boolean IsDone() const;
89 //! Returns the number of extremum distances.
90 Standard_EXPORT Standard_Integer NbExt() const;
92 //! Returns the value of the Nth resulting square distance.
93 Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N) const;
95 //! Returns the point of the Nth resulting distance.
96 Standard_EXPORT const Extrema_POnSurf& Point (const Standard_Integer N) const;
98 //! if the surface is a trimmed surface,
99 //! dUfVf is a square distance between <P> and the point
100 //! of parameter FirstUParameter and FirstVParameter <PUfVf>.
101 //! dUfVl is a square distance between <P> and the point
102 //! of parameter FirstUParameter and LastVParameter <PUfVl>.
103 //! dUlVf is a square distance between <P> and the point
104 //! of parameter LastUParameter and FirstVParameter <PUlVf>.
105 //! dUlVl is a square distance between <P> and the point
106 //! of parameter LastUParameter and LastVParameter <PUlVl>.
107 Standard_EXPORT void TrimmedSquareDistances (Standard_Real& dUfVf, Standard_Real& dUfVl, Standard_Real& dUlVf, Standard_Real& dUlVl, gp_Pnt& PUfVf, gp_Pnt& PUfVl, gp_Pnt& PUlVf, gp_Pnt& PUlVl) const;
109 Standard_EXPORT void SetFlag (const Extrema_ExtFlag F);
111 Standard_EXPORT void SetAlgo (const Extrema_ExtAlgo A);
125 Standard_EXPORT Adaptor3d_SurfacePtr Bidon() const;
127 Standard_EXPORT void TreatSolution (const Extrema_POnSurf& PS, const Standard_Real Val);
130 Adaptor3d_SurfacePtr myS;
131 Standard_Boolean myDone;
132 Extrema_ExtPElS myExtPElS;
133 Extrema_GenExtPS myExtPS;
134 Extrema_SequenceOfPOnSurf myPoints;
135 Standard_Real myuinf;
136 Standard_Real myusup;
137 Standard_Real myvinf;
138 Standard_Real myvsup;
139 Standard_Real mytolu;
140 Standard_Real mytolv;
149 TColStd_SequenceOfReal mySqDist;
150 GeomAbs_SurfaceType mytype;
151 Handle(Extrema_ExtPExtS) myExtPExtS;
152 Handle(Extrema_ExtPRevS) myExtPRevS;
163 #endif // _Extrema_ExtPS_HeaderFile