// Created on: 1991-03-22 // Created by: Philippe DAUTRY // Copyright (c) 1991-1999 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 _GccAna_Circ2dTanOnRad_HeaderFile #define _GccAna_Circ2dTanOnRad_HeaderFile #include #include #include #include #include #include #include #include #include #include #include #include class GccEnt_QualifiedCirc; class gp_Lin2d; class GccEnt_QualifiedLin; class gp_Pnt2d; class gp_Circ2d; //! This class implements the algorithms used to //! create a 2d circle tangent to a 2d entity, //! centered on a curv and with a given radius. //! The arguments of all construction methods are : //! - The qualified element for the tangency constrains //! (QualifiedCirc, QualifiedLin, Points). //! - The Center element (circle, line). //! - A real Tolerance. //! Tolerance is only used in the limits cases. //! For example : //! We want to create a circle tangent to an OutsideCirc C1 //! centered on a line OnLine with a radius Radius and with //! a tolerance Tolerance. //! If we did not use Tolerance it is impossible to //! find a solution in the following case : OnLine is //! outside C1. There is no intersection point between C1 //! and OnLine. The distance between the line and the //! circle is greater than Radius. //! With Tolerance we will give a solution if the //! distance between C1 and OnLine is lower than or //! equal Tolerance. class GccAna_Circ2dTanOnRad { public: DEFINE_STANDARD_ALLOC //! This methods implements the algorithms used to create //! 2d Circles tangent to a circle and centered on a 2d Line //! with a given radius. //! Tolerance is used to find solution in every limit cases. //! For example Tolerance is used in the case of EnclosedCirc when //! Radius-R1+dist is greater Tolerance (dist is the distance //! between the line and the location of the circ, R1 is the //! radius of the circ) because there is no solution. //! raises NegativeValue in case of NegativeRadius. Standard_EXPORT GccAna_Circ2dTanOnRad(const GccEnt_QualifiedCirc& Qualified1, const gp_Lin2d& OnLine, const Standard_Real Radius, const Standard_Real Tolerance); //! This methods implements the algorithms used to create //! 2d Circles tangent to a 2d Line and centered on a 2d Line //! with a given radius. //! Tolerance is used to find solution in every limit cases. //! raises NegativeValue in case of NegativeRadius. Standard_EXPORT GccAna_Circ2dTanOnRad(const GccEnt_QualifiedLin& Qualified1, const gp_Lin2d& OnLine, const Standard_Real Radius, const Standard_Real Tolerance); //! This methods implements the algorithms used to create //! 2d Circles passing through a 2d Point and centered on a //! 2d Line with a given radius. //! Tolerance is used to find solution in every limit cases. Standard_EXPORT GccAna_Circ2dTanOnRad(const gp_Pnt2d& Point1, const gp_Lin2d& OnLine, const Standard_Real Radius, const Standard_Real Tolerance); //! This methods implements the algorithms used to create //! 2d Circles tangent to a circle and centered on a 2d Circle //! with a given radius. //! Tolerance is used to find solution in every limit cases. //! raises NegativeValue in case of NegativeRadius. Standard_EXPORT GccAna_Circ2dTanOnRad(const GccEnt_QualifiedCirc& Qualified1, const gp_Circ2d& OnCirc, const Standard_Real Radius, const Standard_Real Tolerance); //! This methods implements the algorithms used to create //! 2d Circles tangent to a 2d Line and centered on a 2d Line //! with a given radius. //! Tolerance is used to find solution in every limit cases. //! raises NegativeValue in case of NegativeRadius. Standard_EXPORT GccAna_Circ2dTanOnRad(const GccEnt_QualifiedLin& Qualified1, const gp_Circ2d& OnCirc, const Standard_Real Radius, const Standard_Real Tolerance); //! This methods implements the algorithms used to create //! 2d Circles passing through a 2d Point and centered on a //! 2d Line with a given radius. //! Tolerance is used to find solution in every limit cases. //! raises NegativeValue in case of NegativeRadius. Standard_EXPORT GccAna_Circ2dTanOnRad(const gp_Pnt2d& Point1, const gp_Circ2d& OnCirc, const Standard_Real Radius, const Standard_Real Tolerance); //! 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 circles, representing solutions. //! Raises NotDone if the construction algorithm didn't succeed. 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. //! Raises NotDone if the construction algorithm didn't succeed. //! It raises OutOfRange if Index is greater than the //! number of solutions Standard_EXPORT gp_Circ2d ThisSolution (const Standard_Integer Index) const; //! Returns the qualifier Qualif1 of the tangency argument //! for the solution of index Index computed by this algorithm. //! The returned qualifier is: //! - that specified at the start of construction when the //! solutions are defined as enclosed, enclosing or //! outside with respect to the argument, or //! - that computed during construction (i.e. enclosed, //! enclosing or outside) when the solutions are defined //! as unqualified with respect to the argument, or //! - GccEnt_noqualifier if the tangency argument is a point. //! 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) const; //! Returns information about the tangency point between the //! result number Index and the first argument. //! ParSol is the intrinsic parameter of the point on the //! solution curv. //! ParArg is the intrinsic parameter of the point on the //! argument curv. //! PntSol is the tangency point on the solution curv. //! PntArg is the tangency point on the argument curv. //! Raises NotDone if the construction algorithm didn't succeed. //! It raises OutOfRange if Index is greater than the //! number of solutions. Standard_EXPORT void Tangency1 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; //! Returns information about the center (on the curv) //! of the result. //! ParArg is the intrinsic parameter of the point on //! the argument curv. //! PntSol is the center point of the solution curv. //! Raises NotDone if the construction algorithm didn't succeed. //! It raises OutOfRange if Index is greater than the //! number of solutions. Standard_EXPORT void CenterOn3 (const Standard_Integer Index, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; //! Returns True if the solution number Index is equal to //! the first argument and False in the other cases. //! Raises NotDone if the construction algorithm didn't succeed. //! It raises OutOfRange if Index is greater than the //! number of solutions. Standard_EXPORT Standard_Boolean IsTheSame1 (const Standard_Integer Index) const; protected: private: Standard_Boolean WellDone; Standard_Integer NbrSol; TColgp_Array1OfCirc2d cirsol; GccEnt_Array1OfPosition qualifier1; TColStd_Array1OfInteger TheSame1; TColgp_Array1OfPnt2d pnttg1sol; TColgp_Array1OfPnt2d pntcen3; TColStd_Array1OfReal par1sol; TColStd_Array1OfReal pararg1; TColStd_Array1OfReal parcen3; }; #endif // _GccAna_Circ2dTanOnRad_HeaderFile