// Created on: 1995-06-02 // Created by: Xavier BENVENISTE // Copyright (c) 1995-1999 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 _Approx_SameParameter_HeaderFile #define _Approx_SameParameter_HeaderFile #include "Adaptor3d_CurveOnSurface.hxx" #include "Adaptor3d_Surface.hxx" class Geom_Curve; class Geom2d_Curve; class Geom_Surface; //! Approximation of a PCurve on a surface to make its //! parameter be the same that the parameter of a given 3d //! reference curve. class Approx_SameParameter { public: DEFINE_STANDARD_ALLOC //! Warning: the C3D and C2D must have the same parametric domain. Standard_EXPORT Approx_SameParameter(const occ::handle& C3D, const occ::handle& C2D, const occ::handle& S, const double Tol); //! Warning: the C3D and C2D must have the same parametric domain. Standard_EXPORT Approx_SameParameter(const occ::handle& C3D, const occ::handle& C2D, const occ::handle& S, const double Tol); //! Warning: the C3D and C2D must have the same parametric domain. Standard_EXPORT Approx_SameParameter(const occ::handle& C3D, const occ::handle& C2D, const occ::handle& S, const double Tol); //!@Returns .false. if calculations failed, //! .true. if calculations succeed bool IsDone() const { return myDone; } //!@Returns tolerance (maximal distance) between 3d curve //! and curve on surface, generated by 2d curve and surface. double TolReached() const { return myTolReached; } //! Tells whether the original data had already the same //! parameter up to the tolerance : in that case nothing //! is done. bool IsSameParameter() const { return mySameParameter; } //! Returns the 2D curve that has the same parameter as //! the 3D curve once evaluated on the surface up to the //! specified tolerance. occ::handle Curve2d() const { return myCurve2d; } //! Returns the 3D curve that has the same parameter as //! the 3D curve once evaluated on the surface up to the //! specified tolerance. occ::handle Curve3d() const { return myC3d; } //! Returns the 3D curve on surface that has the same parameter as //! the 3D curve up to the specified tolerance. occ::handle CurveOnSurface() const { return myCurveOnSurface; } private: //! Internal data structure to unify access to the most actively used data. //! This structure is not intended to be class field since //! a lot of memory is used in intermediate computations. struct Approx_SameParameter_Data { Adaptor3d_CurveOnSurface myCOnS; // Curve on surface. int myNbPnt; // Number of points. double* myPC3d; // Parameters on 3d curve. double* myPC2d; // Parameters on 2d curve. // Second data arrays. Used in loop over poles. double* myNewPC3d; // Parameters on 3d curve. double* myNewPC2d; // Parameters on 2d curve. // Parameters ranges. double myC3dPF; // Curve 3d Parameter First. double myC3dPL; // Curve 3d Parameter Last. double myC2dPF; // Curve 2d Parameter First. double myC2dPL; // Curve 2d Parameter Last. double myTol; // Working tolerance. // Swap data arrays and update number of points. void Swap(const int theNewNbPoints) { myNbPnt = theNewNbPoints; double* temp; // 3-D temp = myPC3d; myPC3d = myNewPC3d; myNewPC3d = temp; // 2-D temp = myPC2d; myPC2d = myNewPC2d; myNewPC2d = temp; } }; Approx_SameParameter(const Approx_SameParameter&) = delete; Approx_SameParameter& operator=(const Approx_SameParameter&) = delete; //! Computes the pcurve (internal use only). Standard_EXPORT void Build(const double Tol); //! Computes initial point distribution. bool BuildInitialDistribution(Approx_SameParameter_Data& theData) const; //! Increases initial number of samples in case of the C0 continuity. //! Return new number of points and corresponding data arrays. //@return true if new number of samples is good and false otherwise. bool IncreaseInitialNbSamples(Approx_SameParameter_Data& theData) const; //! Computes tangents on boundary points. //@return true if tangents are not null and false otherwise. bool ComputeTangents(const Adaptor3d_CurveOnSurface& theCOnS, double& theFirstTangent, double& theLastTangent) const; //! Method to check same parameter state //! and build dependency between 2d and 3d curves. //@return true if 2d and 3d curves have same parameter state and false otherwise. bool CheckSameParameter(Approx_SameParameter_Data& theData, double& theSqDist) const; //! Computes interpolated values. //!@Returns .false. if computations failed; bool Interpolate(const Approx_SameParameter_Data& theData, const double aTangFirst, const double aTangLast, NCollection_Array1& thePoles, NCollection_Array1& theFlatKnots) const; //! Increases number of poles in poles loop. //@return true if poles is changed and false otherwise. bool IncreaseNbPoles(const NCollection_Array1& thePoles, const NCollection_Array1& theFlatKnots, Approx_SameParameter_Data& theData, double& theBestSqTol) const; static const int myNbSamples = 22; // To be consistent with "checkshape". static const int myMaxArraySize = 1000; const double myDeltaMin; // Initialization is allowed only for integral types. bool mySameParameter; bool myDone; double myTolReached; occ::handle myCurve2d; occ::handle myHCurve2d; occ::handle myC3d; occ::handle mySurf; occ::handle myCurveOnSurface; }; #endif // _Approx_SameParameter_HeaderFile