// Created on: 1992-10-20 // Created by: Remi GILET // Copyright (c) 1992-1999 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 _Geom2dGcc_Circ2d2TanOn_HeaderFile #define _Geom2dGcc_Circ2d2TanOn_HeaderFile #include #include #include #include #include #include #include #include #include #include #include #include class Geom2dGcc_QualifiedCurve; class Geom2dAdaptor_Curve; class Geom2d_Point; class GccAna_Circ2d2TanOn; class Geom2dGcc_Circ2d2TanOnGeo; class gp_Circ2d; class gp_Pnt2d; //! This class implements the algorithms used to //! create 2d circles TANgent to 2 entities and //! having the center ON a curve. //! The order of the tangency argument is always //! QualifiedCirc, QualifiedLin, QualifiedCurv, Pnt2d. //! the arguments are : //! - The two tangency arguments. //! - The center line. //! - The parameter for each tangency argument which //! is a curve. //! - The tolerance. class Geom2dGcc_Circ2d2TanOn { public: DEFINE_STANDARD_ALLOC //! This method implements the algorithms used to //! create 2d circles TANgent to two curves and //! having the center ON a 2d curve. //! Param1 is the initial guess on the first curve QualifiedCurv. //! Param1 is the initial guess on the second curve QualifiedCurv. //! ParamOn is the initial guess on the center curve OnCurv. //! Tolerance is used for the limit cases. Standard_EXPORT Geom2dGcc_Circ2d2TanOn(const Geom2dGcc_QualifiedCurve& Qualified1, const Geom2dGcc_QualifiedCurve& Qualified2, const Geom2dAdaptor_Curve& OnCurve, const Standard_Real Tolerance, const Standard_Real Param1, const Standard_Real Param2, const Standard_Real ParamOn); //! This method implements the algorithms used to //! create 2d circles TANgent to one curve and one point and //! having the center ON a 2d curve. //! Param1 is the initial guess on the first curve QualifiedCurv. //! ParamOn is the initial guess on the center curve OnCurv. //! Tolerance is used for the limit cases. Standard_EXPORT Geom2dGcc_Circ2d2TanOn(const Geom2dGcc_QualifiedCurve& Qualified1, const Handle(Geom2d_Point)& Point, const Geom2dAdaptor_Curve& OnCurve, const Standard_Real Tolerance, const Standard_Real Param1, const Standard_Real ParamOn); //! This method implements the algorithms used to //! create 2d circles TANgent to two points and //! having the center ON a 2d curve. //! Tolerance is used for the limit cases. Standard_EXPORT Geom2dGcc_Circ2d2TanOn(const Handle(Geom2d_Point)& Point1, const Handle(Geom2d_Point)& Point2, const Geom2dAdaptor_Curve& OnCurve, const Standard_Real Tolerance); Standard_EXPORT void Results (const GccAna_Circ2d2TanOn& Circ); Standard_EXPORT void Results (const Geom2dGcc_Circ2d2TanOnGeo& Circ); //! Returns true if the construction algorithm does not fail //! (even if it finds no solution). //! Note: IsDone protects against a failure arising from a //! more internal intersection algorithm, which has //! reached its numeric limits. Standard_EXPORT Standard_Boolean IsDone() const; //! This method returns the number of solutions. //! NotDone is raised if the algorithm failed. Standard_EXPORT Standard_Integer NbSolutions() const; //! Returns the solution number Index and raises OutOfRange //! exception if Index is greater than the number of solutions. //! Be careful: the Index is only a way to get all the //! solutions, but is not associated to these outside the context //! of the algorithm-object. //! Exceptions //! Standard_OutOfRange if Index is less than or equal //! to zero or greater than the number of solutions //! computed by this algorithm. //! StdFail_NotDone if the construction fails. Standard_EXPORT gp_Circ2d ThisSolution (const Standard_Integer Index) const; //! It returns the information about the qualifiers of //! the tangency //! arguments concerning the solution number Index. //! It returns the real qualifiers (the qualifiers given to the //! constructor method in case of enclosed, enclosing and outside //! and the qualifiers computedin case of unqualified). //! Exceptions //! Standard_OutOfRange if Index is less than zero or //! greater than the number of solutions computed by this algorithm. //! StdFail_NotDone if the construction fails. Standard_EXPORT void WhichQualifier (const Standard_Integer Index, GccEnt_Position& Qualif1, GccEnt_Position& Qualif2) const; //! Returns information about the tangency point between the //! result and the first argument. //! ParSol is the intrinsic parameter of the point PntSol on the solution curv. //! ParArg is the intrinsic parameter of the point PntSol on the argument curv. Standard_EXPORT void Tangency1 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; //! Returns information about the tangency point between the //! result and the second argument. //! ParSol is the intrinsic parameter of the point PntSol on the solution curv. //! ParArg is the intrinsic parameter of the point PntSol on the argument curv. Standard_EXPORT void Tangency2 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; //! Returns the center PntSol of the solution of index Index //! computed by this algorithm. //! ParArg is the parameter of the point PntSol on the third argument. //! Exceptions //! Standard_OutOfRange if Index is less than zero or //! greater than the number of solutions computed by this algorithm. //! StdFail_NotDone if the construction fails. Standard_EXPORT void CenterOn3 (const Standard_Integer Index, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; //! Returns true if the solution of index Index and, //! respectively, the first or second argument of this //! algorithm are the same (i.e. there are 2 identical circles). //! If Rarg is the radius of the first or second argument, //! Rsol is the radius of the solution and dist is the //! distance between the two centers, we consider the two //! circles to be identical if |Rarg - Rsol| and dist //! are less than or equal to the tolerance criterion given at //! the time of construction of this algorithm. //! Exceptions //! Standard_OutOfRange if Index is less than zero or //! greater than the number of solutions computed by this algorithm. //! StdFail_NotDone if the construction fails. Standard_EXPORT Standard_Boolean IsTheSame1 (const Standard_Integer Index) const; //! Returns true if the solution of index Index and, //! respectively, the first or second argument of this //! algorithm are the same (i.e. there are 2 identical circles). //! If Rarg is the radius of the first or second argument, //! Rsol is the radius of the solution and dist is the //! distance between the two centers, we consider the two //! circles to be identical if |Rarg - Rsol| and dist //! are less than or equal to the tolerance criterion given at //! the time of construction of this algorithm. //! Exceptions //! Standard_OutOfRange if Index is less than zero or //! greater than the number of solutions computed by this algorithm. //! StdFail_NotDone if the construction fails. Standard_EXPORT Standard_Boolean IsTheSame2 (const Standard_Integer Index) const; protected: private: Standard_Boolean WellDone; TColgp_Array1OfCirc2d cirsol; Standard_Integer NbrSol; GccEnt_Array1OfPosition qualifier1; GccEnt_Array1OfPosition qualifier2; TColStd_Array1OfInteger TheSame1; TColStd_Array1OfInteger TheSame2; TColgp_Array1OfPnt2d pnttg1sol; TColgp_Array1OfPnt2d pnttg2sol; TColgp_Array1OfPnt2d pntcen; TColStd_Array1OfReal par1sol; TColStd_Array1OfReal par2sol; TColStd_Array1OfReal pararg1; TColStd_Array1OfReal pararg2; TColStd_Array1OfReal parcen3; Standard_Boolean Invert; }; #endif // _Geom2dGcc_Circ2d2TanOn_HeaderFile