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127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
// Created on: 1991-02-26
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// Created by: Isabelle GRIGNON
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _Extrema_LocateExtPC_HeaderFile
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#define _Extrema_LocateExtPC_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Extrema_LocEPCOfLocateExtPC.hxx>
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#include <Extrema_ELPCOfLocateExtPC.hxx>
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#include <GeomAbs_CurveType.hxx>
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#include <Standard_Integer.hxx>
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class Standard_DomainError;
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class StdFail_NotDone;
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class Adaptor3d_Curve;
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class Extrema_CurveTool;
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class Extrema_ExtPElC;
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class gp_Pnt;
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class gp_Vec;
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class Extrema_POnCurv;
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class Extrema_ELPCOfLocateExtPC;
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class Extrema_EPCOfELPCOfLocateExtPC;
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class Extrema_LocEPCOfLocateExtPC;
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class Extrema_PCLocFOfLocEPCOfLocateExtPC;
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class Extrema_LocateExtPC
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{
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public:
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DEFINE_STANDARD_ALLOC
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Standard_EXPORT Extrema_LocateExtPC();
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//! Calculates the distance with a close point.
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//! The close point is defined by the parameter value
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//! U0.
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//! The function F(u)=distance(P,C(u)) has an extremum
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//! when g(u)=dF/du=0. The algorithm searches a zero
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//! near the close point.
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//! TolF is used to decide to stop the iterations.
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//! At the nth iteration, the criteria is:
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//! abs(Un - Un-1) < TolF.
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Standard_EXPORT Extrema_LocateExtPC(const gp_Pnt& P, const Adaptor3d_Curve& C, const Standard_Real U0, const Standard_Real TolF);
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//! Calculates the distance with a close point.
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//! The close point is defined by the parameter value
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//! U0.
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//! The function F(u)=distance(P,C(u)) has an extremum
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//! when g(u)=dF/du=0. The algorithm searches a zero
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//! near the close point.
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//! Zeros are searched between Umin et Usup.
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//! TolF is used to decide to stop the iterations.
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//! At the nth iteration, the criteria is:
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//! abs(Un - Un-1) < TolF.
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Standard_EXPORT Extrema_LocateExtPC(const gp_Pnt& P, const Adaptor3d_Curve& C, const Standard_Real U0, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real TolF);
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//! sets the fields of the algorithm.
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Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real TolF);
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Standard_EXPORT void Perform (const gp_Pnt& P, const Standard_Real U0);
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//! Returns True if the distance is found.
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Standard_EXPORT Standard_Boolean IsDone() const;
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//! Returns the value of the extremum square distance.
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Standard_EXPORT Standard_Real SquareDistance() const;
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//! Returns True if the extremum distance is a minimum.
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Standard_EXPORT Standard_Boolean IsMin() const;
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//! Returns the point of the extremum distance.
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Standard_EXPORT const Extrema_POnCurv& Point() const;
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protected:
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private:
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Extrema_POnCurv mypp;
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Standard_Address myC;
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Standard_Real mydist2;
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Standard_Boolean myismin;
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Standard_Boolean myDone;
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Standard_Real myumin;
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Standard_Real myusup;
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Standard_Real mytol;
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Extrema_LocEPCOfLocateExtPC myLocExtPC;
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Extrema_ELPCOfLocateExtPC myExtremPC;
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GeomAbs_CurveType type;
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Standard_Integer numberext;
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};
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#endif // _Extrema_LocateExtPC_HeaderFile
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