mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-04 18:06:22 +03:00
1dbdf099cd
Check for double solutions has been added in algorithms Extrema_ELPCOfLocateExtPC and Extrema_ELPCOfLocateExtPC2d that find extrema between point and curve.
158 lines
5.0 KiB
C++
158 lines
5.0 KiB
C++
// Created on: 1991-02-26
|
|
// Created by: Isabelle GRIGNON
|
|
// Copyright (c) 1991-1999 Matra Datavision
|
|
// Copyright (c) 1999-2014 OPEN CASCADE SAS
|
|
//
|
|
// This file is part of Open CASCADE Technology software library.
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under
|
|
// the terms of the GNU Lesser General Public License version 2.1 as published
|
|
// by the Free Software Foundation, with special exception defined in the file
|
|
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
// distribution for complete text of the license and disclaimer of any warranty.
|
|
//
|
|
// Alternatively, this file may be used under the terms of Open CASCADE
|
|
// commercial license or contractual agreement.
|
|
|
|
#ifndef _Extrema_ELPCOfLocateExtPC2d_HeaderFile
|
|
#define _Extrema_ELPCOfLocateExtPC2d_HeaderFile
|
|
|
|
#include <Standard.hxx>
|
|
#include <Standard_DefineAlloc.hxx>
|
|
#include <Standard_Handle.hxx>
|
|
|
|
#include <Standard_Address.hxx>
|
|
#include <gp_Pnt2d.hxx>
|
|
#include <Extrema_ExtPElC2d.hxx>
|
|
#include <Extrema_SequenceOfPOnCurv2d.hxx>
|
|
#include <Standard_Boolean.hxx>
|
|
#include <Standard_Real.hxx>
|
|
#include <Extrema_EPCOfELPCOfLocateExtPC2d.hxx>
|
|
#include <Standard_Integer.hxx>
|
|
#include <GeomAbs_CurveType.hxx>
|
|
#include <TColStd_SequenceOfBoolean.hxx>
|
|
#include <TColStd_SequenceOfReal.hxx>
|
|
class StdFail_NotDone;
|
|
class Standard_OutOfRange;
|
|
class Standard_TypeMismatch;
|
|
class Adaptor2d_Curve2d;
|
|
class Extrema_Curve2dTool;
|
|
class Extrema_ExtPElC2d;
|
|
class gp_Pnt2d;
|
|
class gp_Vec2d;
|
|
class Extrema_POnCurv2d;
|
|
class Extrema_EPCOfELPCOfLocateExtPC2d;
|
|
class Extrema_PCFOfEPCOfELPCOfLocateExtPC2d;
|
|
|
|
|
|
|
|
class Extrema_ELPCOfLocateExtPC2d
|
|
{
|
|
public:
|
|
|
|
DEFINE_STANDARD_ALLOC
|
|
|
|
|
|
Standard_EXPORT Extrema_ELPCOfLocateExtPC2d();
|
|
|
|
//! It calculates all the distances.
|
|
//! The function F(u)=distance(P,C(u)) has an extremum
|
|
//! when g(u)=dF/du=0. The algorithm searchs all the
|
|
//! zeros inside the definition range of the curve.
|
|
//! Zeros are searched between uinf and usup.
|
|
//! Tol is used to decide to stop the
|
|
//! iterations according to the following condition:
|
|
//! if n is the number of iterations,
|
|
//! the algorithm stops when abs(F(Un)-F(Un-1)) < Tol.
|
|
Standard_EXPORT Extrema_ELPCOfLocateExtPC2d(const gp_Pnt2d& P, const Adaptor2d_Curve2d& C, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real TolF = 1.0e-10);
|
|
|
|
//! It calculates all the distances.
|
|
//! The function F(u)=distance(P,C(u)) has an extremum
|
|
//! when g(u)=dF/du=0. The algorithm searchs all the
|
|
//! zeros inside the definition range of the curve.
|
|
//! Tol is used to decide to stop the
|
|
//! iterations according to the following condition:
|
|
//! if n is the number of iterations,
|
|
//! the algorithm stops when abs(F(Un)-F(Un-1)) < Tol.
|
|
Standard_EXPORT Extrema_ELPCOfLocateExtPC2d(const gp_Pnt2d& P, const Adaptor2d_Curve2d& C, const Standard_Real TolF = 1.0e-10);
|
|
|
|
//! initializes the fields of the algorithm.
|
|
Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real TolF = 1.0e-10);
|
|
|
|
//! An exception is raised if the fields have not been
|
|
//! initialized.
|
|
Standard_EXPORT void Perform (const gp_Pnt2d& P);
|
|
|
|
//! True if the distances are found.
|
|
Standard_EXPORT Standard_Boolean IsDone() const;
|
|
|
|
//! Returns the value of the <N>th extremum square distance.
|
|
Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N) const;
|
|
|
|
//! Returns the number of extremum distances.
|
|
Standard_EXPORT Standard_Integer NbExt() const;
|
|
|
|
//! Returns True if the <N>th extremum distance is a
|
|
//! minimum.
|
|
Standard_EXPORT Standard_Boolean IsMin (const Standard_Integer N) const;
|
|
|
|
//! Returns the point of the <N>th extremum distance.
|
|
Standard_EXPORT const Extrema_POnCurv2d& Point (const Standard_Integer N) const;
|
|
|
|
//! if the curve is a trimmed curve,
|
|
//! dist1 is a square distance between <P> and the point
|
|
//! of parameter FirstParameter <P1> and
|
|
//! dist2 is a square distance between <P> and the point
|
|
//! of parameter LastParameter <P2>.
|
|
Standard_EXPORT void TrimmedSquareDistances (Standard_Real& dist1, Standard_Real& dist2, gp_Pnt2d& P1, gp_Pnt2d& P2) const;
|
|
|
|
|
|
|
|
|
|
protected:
|
|
|
|
|
|
Standard_EXPORT void IntervalPerform (const gp_Pnt2d& P);
|
|
|
|
Standard_EXPORT void AddSol(const Standard_Real theU,
|
|
const gp_Pnt2d& theP,
|
|
const Standard_Real theSqDist,
|
|
const Standard_Boolean isMin);
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
|
|
|
Standard_Address myC;
|
|
gp_Pnt2d Pf;
|
|
gp_Pnt2d Pl;
|
|
Extrema_ExtPElC2d myExtPElC;
|
|
Extrema_SequenceOfPOnCurv2d mypoint;
|
|
Standard_Boolean mydone;
|
|
Standard_Real mydist1;
|
|
Standard_Real mydist2;
|
|
Extrema_EPCOfELPCOfLocateExtPC2d myExtPC;
|
|
Standard_Real mytolu;
|
|
Standard_Real mytolf;
|
|
Standard_Integer mysample;
|
|
Standard_Real myintuinf;
|
|
Standard_Real myintusup;
|
|
Standard_Real myuinf;
|
|
Standard_Real myusup;
|
|
GeomAbs_CurveType type;
|
|
TColStd_SequenceOfBoolean myismin;
|
|
TColStd_SequenceOfReal mySqDist;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif // _Extrema_ELPCOfLocateExtPC2d_HeaderFile
|