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139 lines
5.3 KiB
C++
139 lines
5.3 KiB
C++
// Created on: 1994-02-01
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// Created by: Laurent PAINNOT
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// Copyright (c) 1994-1999 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_ExtPS_HeaderFile
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#define _Extrema_ExtPS_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Extrema_ExtPElS.hxx>
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#include <Extrema_GenExtPS.hxx>
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#include <Extrema_SequenceOfPOnSurf.hxx>
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#include <gp_Pnt.hxx>
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#include <TColStd_SequenceOfReal.hxx>
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#include <GeomAbs_SurfaceType.hxx>
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#include <Extrema_ExtFlag.hxx>
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#include <Extrema_ExtAlgo.hxx>
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#include <Standard_Integer.hxx>
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class Extrema_ExtPExtS;
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class Extrema_ExtPRevS;
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class Adaptor3d_Surface;
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class Extrema_POnSurf;
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//! It calculates all the extremum distances
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//! between a point and a surface.
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//! These distances can be minimum or maximum.
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class Extrema_ExtPS
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{
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public:
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DEFINE_STANDARD_ALLOC
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Standard_EXPORT Extrema_ExtPS();
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//! It calculates all the distances.
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//! NbU and NbV are used to locate the close points
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//! to find the zeros. They must be great enough
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//! such that if there is N extrema, there will
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//! be N extrema between P and the grid.
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//! TolU et TolV are used to determine the conditions
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//! to stop the iterations; at the iteration number n:
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//! (Un - Un-1) < TolU and (Vn - Vn-1) < TolV .
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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);
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//! It calculates all the distances.
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//! NbU and NbV are used to locate the close points
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//! to find the zeros. They must be great enough
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//! such that if there is N extrema, there will
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//! be N extrema between P and the grid.
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//! TolU et TolV are used to determine the conditions
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//! to stop the iterations; at the iteration number n:
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//! (Un - Un-1) < TolU and (Vn - Vn-1) < TolV .
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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);
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//! Initializes the fields of the algorithm.
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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);
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//! Computes the distances.
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//! An exception is raised if the fields have not been
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//! initialized.
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Standard_EXPORT void Perform (const gp_Pnt& P);
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//! Returns True if the distances are found.
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Standard_EXPORT Standard_Boolean IsDone() const;
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//! Returns the number of extremum distances.
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Standard_EXPORT Standard_Integer NbExt() const;
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//! Returns the value of the Nth resulting square distance.
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Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N) const;
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//! Returns the point of the Nth resulting distance.
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Standard_EXPORT const Extrema_POnSurf& Point (const Standard_Integer N) const;
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//! if the surface is a trimmed surface,
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//! dUfVf is a square distance between <P> and the point
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//! of parameter FirstUParameter and FirstVParameter <PUfVf>.
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//! dUfVl is a square distance between <P> and the point
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//! of parameter FirstUParameter and LastVParameter <PUfVl>.
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//! dUlVf is a square distance between <P> and the point
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//! of parameter LastUParameter and FirstVParameter <PUlVf>.
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//! dUlVl is a square distance between <P> and the point
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//! of parameter LastUParameter and LastVParameter <PUlVl>.
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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;
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Standard_EXPORT void SetFlag (const Extrema_ExtFlag F);
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Standard_EXPORT void SetAlgo (const Extrema_ExtAlgo A);
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private:
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Standard_EXPORT void TreatSolution (const Extrema_POnSurf& PS, const Standard_Real Val);
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private:
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const Adaptor3d_Surface* myS;
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Standard_Boolean myDone;
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Extrema_ExtPElS myExtPElS;
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Extrema_GenExtPS myExtPS;
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Extrema_SequenceOfPOnSurf myPoints;
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Standard_Real myuinf;
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Standard_Real myusup;
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Standard_Real myvinf;
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Standard_Real myvsup;
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Standard_Real mytolu;
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Standard_Real mytolv;
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Standard_Real d11;
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Standard_Real d12;
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Standard_Real d21;
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Standard_Real d22;
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gp_Pnt P11;
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gp_Pnt P12;
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gp_Pnt P21;
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gp_Pnt P22;
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TColStd_SequenceOfReal mySqDist;
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GeomAbs_SurfaceType mytype;
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Handle(Extrema_ExtPExtS) myExtPExtS;
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Handle(Extrema_ExtPRevS) myExtPRevS;
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};
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#endif // _Extrema_ExtPS_HeaderFile
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