This class implements the algorithms used to create 2d lines tangent to 2 other elements which can be circles, curves or points. More than one argument must be a curve. Describes functions for building a 2D line: More...

#include <Geom2dGcc_Lin2d2Tan.hxx>

Public Member Functions
	Geom2dGcc_Lin2d2Tan (const Geom2dGcc_QualifiedCurve &Qualified1, const Geom2dGcc_QualifiedCurve &Qualified2, const double Tolang)
	This class implements the algorithms used to create 2d line tangent to two curves. Tolang is used to determine the tolerance for the tangency points.

	Geom2dGcc_Lin2d2Tan (const Geom2dGcc_QualifiedCurve &Qualified1, const gp_Pnt2d &ThePoint, const double Tolang)
	This class implements the algorithms used to create 2d lines passing through a point and tangent to a curve. Tolang is used to determine the tolerance for the tangency points.

	Geom2dGcc_Lin2d2Tan (const Geom2dGcc_QualifiedCurve &Qualified1, const Geom2dGcc_QualifiedCurve &Qualified2, const double Tolang, const double Param1, const double Param2)
	This class implements the algorithms used to create 2d line tangent to two curves. Tolang is used to determine the tolerance for the tangency points. Param1 is used for the initial guess on the first curve. Param2 is used for the initial guess on the second curve.

	Geom2dGcc_Lin2d2Tan (const Geom2dGcc_QualifiedCurve &Qualified1, const gp_Pnt2d &ThePoint, const double Tolang, const double Param1)
	This class implements the algorithms used to create 2d lines passing through a point and tangent to a curve. Tolang is used to determine the tolerance for the tangency points. Param2 is used for the initial guess on the curve.

bool	IsDone () const
	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.

int	NbSolutions () const
	Returns the number of lines, representing solutions computed by this algorithm. Exceptions StdFail_NotDone if the construction fails.R.

gp_Lin2d	ThisSolution (const int Index) const
	Returns a line, representing the solution of index Index computed by this algorithm. Warning This indexing simply provides a means of consulting the solutions. The index values are not associated with these solutions outside the context of the algorithm object. 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.

void	WhichQualifier (const int Index, GccEnt_Position &Qualif1, GccEnt_Position &Qualif2) const
	Returns the qualifiers Qualif1 and Qualif2 of the tangency arguments for the solution of index Index computed by this algorithm. The returned qualifiers are:

void	Tangency1 (const int Index, double &ParSol, double &ParArg, gp_Pnt2d &PntSol) 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. 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.

void	Tangency2 (const int Index, double &ParSol, double &ParArg, gp_Pnt2d &PntSol) 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. 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.

Detailed Description

This class implements the algorithms used to create 2d lines tangent to 2 other elements which can be circles, curves or points. More than one argument must be a curve. Describes functions for building a 2D line:

tangential to 2 curves, or
tangential to a curve and passing through a point. A Lin2d2Tan object provides a framework for:
defining the construction of 2D line(s),
implementing the construction algorithm, and
consulting the result(s).

Note: Some constructors may check the type of the qualified argument and raise BadQualifier Error in case of incorrect couple (qualifier, curv).

Constructor & Destructor Documentation

◆ Geom2dGcc_Lin2d2Tan() [1/4]

Geom2dGcc_Lin2d2Tan::Geom2dGcc_Lin2d2Tan	(	const Geom2dGcc_QualifiedCurve &	Qualified1,
		const Geom2dGcc_QualifiedCurve &	Qualified2,
		const double	Tolang )

This class implements the algorithms used to create 2d line tangent to two curves. Tolang is used to determine the tolerance for the tangency points.

◆ Geom2dGcc_Lin2d2Tan() [2/4]

Geom2dGcc_Lin2d2Tan::Geom2dGcc_Lin2d2Tan	(	const Geom2dGcc_QualifiedCurve &	Qualified1,
		const gp_Pnt2d &	ThePoint,
		const double	Tolang )

This class implements the algorithms used to create 2d lines passing through a point and tangent to a curve. Tolang is used to determine the tolerance for the tangency points.

◆ Geom2dGcc_Lin2d2Tan() [3/4]

Geom2dGcc_Lin2d2Tan::Geom2dGcc_Lin2d2Tan	(	const Geom2dGcc_QualifiedCurve &	Qualified1,
		const Geom2dGcc_QualifiedCurve &	Qualified2,
		const double	Tolang,
		const double	Param1,
		const double	Param2 )

This class implements the algorithms used to create 2d line tangent to two curves. Tolang is used to determine the tolerance for the tangency points. Param1 is used for the initial guess on the first curve. Param2 is used for the initial guess on the second curve.

◆ Geom2dGcc_Lin2d2Tan() [4/4]

Geom2dGcc_Lin2d2Tan::Geom2dGcc_Lin2d2Tan	(	const Geom2dGcc_QualifiedCurve &	Qualified1,
		const gp_Pnt2d &	ThePoint,
		const double	Tolang,
		const double	Param1 )

This class implements the algorithms used to create 2d lines passing through a point and tangent to a curve. Tolang is used to determine the tolerance for the tangency points. Param2 is used for the initial guess on the curve.

Member Function Documentation

◆ IsDone()

bool Geom2dGcc_Lin2d2Tan::IsDone ( ) const

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.

◆ NbSolutions()

int Geom2dGcc_Lin2d2Tan::NbSolutions ( ) const

Returns the number of lines, representing solutions computed by this algorithm. Exceptions StdFail_NotDone if the construction fails.R.

◆ Tangency1()

void Geom2dGcc_Lin2d2Tan::Tangency1	(	const int	Index,
		double &	ParSol,
		double &	ParArg,
		gp_Pnt2d &	PntSol ) 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. 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.

◆ Tangency2()

void Geom2dGcc_Lin2d2Tan::Tangency2	(	const int	Index,
		double &	ParSol,
		double &	ParArg,
		gp_Pnt2d &	PntSol ) 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. 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.

◆ ThisSolution()

gp_Lin2d Geom2dGcc_Lin2d2Tan::ThisSolution ( const int Index ) const

Returns a line, representing the solution of index Index computed by this algorithm. Warning This indexing simply provides a means of consulting the solutions. The index values are not associated with these solutions outside the context of the algorithm object. 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.

◆ WhichQualifier()

void Geom2dGcc_Lin2d2Tan::WhichQualifier	(	const int	Index,
		GccEnt_Position &	Qualif1,
		GccEnt_Position &	Qualif2 ) const

Returns the qualifiers Qualif1 and Qualif2 of the tangency arguments for the solution of index Index computed by this algorithm. The returned qualifiers are:

those specified at the start of construction when the solutions are defined as enclosing or outside with respect to the arguments, or
those computed during construction (i.e. enclosing or outside) when the solutions are defined as unqualified with respect to the arguments, 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.

The documentation for this class was generated from the following file:

Geom2dGcc_Lin2d2Tan.hxx

Public Member Functions