// Created on: 1994-07-06 // Created by: Laurent PAINNOT // Copyright (c) 1994-1999 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_ExtCC_HeaderFile #define _Extrema_ExtCC_HeaderFile #include #include #include #include #include #include #include #include #include #include #include class Adaptor3d_Curve; class Extrema_POnCurv; class Extrema_ExtElC; //! It calculates all the distance between two curves. //! These distances can be maximum or minimum. class Extrema_ExtCC { public: DEFINE_STANDARD_ALLOC Standard_EXPORT Extrema_ExtCC(const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10); //! It calculates all the distances. Standard_EXPORT Extrema_ExtCC(const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10); //! It calculates all the distances. Standard_EXPORT Extrema_ExtCC(const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real U1, const Standard_Real U2, const Standard_Real V1, const Standard_Real V2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10); //! Initializes but does not perform algorithm. Standard_EXPORT void Initialize (const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10); //! Initializes but does not perform algorithm. Standard_EXPORT void Initialize (const Adaptor3d_Curve& C1, const Adaptor3d_Curve& C2, const Standard_Real U1, const Standard_Real U2, const Standard_Real V1, const Standard_Real V2, const Standard_Real TolC1 = 1.0e-10, const Standard_Real TolC2 = 1.0e-10); Standard_EXPORT void SetCurve (const Standard_Integer theRank, const Adaptor3d_Curve& C); Standard_EXPORT void SetCurve (const Standard_Integer theRank, const Adaptor3d_Curve& C, const Standard_Real Uinf, const Standard_Real Usup); Standard_EXPORT void SetRange (const Standard_Integer theRank, const Standard_Real Uinf, const Standard_Real Usup); Standard_EXPORT void SetTolerance (const Standard_Integer theRank, const Standard_Real Tol); Standard_EXPORT void Perform(); //! Returns True if the distances are found. Standard_EXPORT Standard_Boolean IsDone() const; //! Returns the number of extremum distances. Standard_EXPORT Standard_Integer NbExt() const; //! Returns True if the two curves are parallel. Standard_EXPORT Standard_Boolean IsParallel() const; //! Returns the value of the Nth extremum square distance. Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N = 1) const; //! Returns the points of the Nth extremum distance. //! P1 is on the first curve, P2 on the second one. Standard_EXPORT void Points (const Standard_Integer N, Extrema_POnCurv& P1, Extrema_POnCurv& P2) const; //! if the curve is a trimmed curve, //! dist11 is a square distance between the point on C1 //! of parameter FirstParameter and the point of //! parameter FirstParameter on C2. Standard_EXPORT void TrimmedSquareDistances (Standard_Real& dist11, Standard_Real& distP12, Standard_Real& distP21, Standard_Real& distP22, gp_Pnt& P11, gp_Pnt& P12, gp_Pnt& P21, gp_Pnt& P22) const; //! Set flag for single extrema computation. Works on parametric solver only. Standard_EXPORT void SetSingleSolutionFlag (const Standard_Boolean theSingleSolutionFlag); //! Get flag for single extrema computation. Works on parametric solver only. Standard_EXPORT Standard_Boolean GetSingleSolutionFlag () const; protected: //! Prepares the extrema result(s) for analytical cases (line, circle, ellipsis etc.) Standard_EXPORT void PrepareResults (const Extrema_ExtElC& AlgExt, const Standard_Boolean theIsInverse, const Standard_Real Ut11, const Standard_Real Ut12, const Standard_Real Ut21, const Standard_Real Ut22); //! Prepares the extrema result(s) for general cases (e.g. with B-spline curves). Standard_EXPORT void PrepareResults (const Extrema_ECC& AlgExt, const Standard_Real Ut11, const Standard_Real Ut12, const Standard_Real Ut21, const Standard_Real Ut22); //! Prepares the extrema result(s) in case when the given curves are parallel. Standard_EXPORT void PrepareParallelResult(const Standard_Real theUt11, const Standard_Real theUt12, const Standard_Real theUt21, const Standard_Real theUt22, const Standard_Real theSqDist); // Clears all found extremas. // This method does not change any flags (e.g. Done or IsParallel) void ClearSolutions() { mySqDist.Clear(); mypoints.Clear(); } private: // disallow copies Extrema_ExtCC (Extrema_ExtCC& ) Standard_DELETE; Extrema_ExtCC& operator= (Extrema_ExtCC& ) Standard_DELETE; private: Standard_Boolean myIsFindSingleSolution; // Default value is false. Extrema_ECC myECC; Standard_Boolean myDone; Standard_Boolean myIsParallel; Extrema_SequenceOfPOnCurv mypoints; TColStd_SequenceOfReal mySqDist; const Adaptor3d_Curve* myC[2]; Standard_Real myInf[2]; Standard_Real mySup[2]; Standard_Real myTol[2]; gp_Pnt myP1f; gp_Pnt myP1l; gp_Pnt myP2f; gp_Pnt myP2l; Standard_Real mydist11; Standard_Real mydist12; Standard_Real mydist21; Standard_Real mydist22; }; #endif // _Extrema_ExtCC_HeaderFile