Describes a line in 2D space. A line is positioned in the plane with an axis (a gp_Ax2d object) which gives the line its origin and unit vector. A line and an axis are similar objects, thus, we can convert one into the other. A line provides direct access to the majority of the edit and query functions available on its positioning axis. In addition, however, a line has specific functions for computing distances and positions. See Also GccAna and Geom2dGcc packages which provide functions for constructing lines defined by geometric constraints gce_MakeLin2d which provides functions for more complex line constructions Geom2d_Line which provides additional functions for constructing lines and works, in particular, with the parametric equations of lines. More...

#include <gp_Lin2d.hxx>

Public Member Functions
	gp_Lin2d ()
	Creates a Line corresponding to X axis of the reference coordinate system.

	gp_Lin2d (const gp_Ax2d &theA)
	Creates a line located with theA.

	gp_Lin2d (const gp_Pnt2d &theP, const gp_Dir2d &theV)
	<theP> is the location point (origin) of the line and <theV> is the direction of the line.

	gp_Lin2d (const Standard_Real theA, const Standard_Real theB, const Standard_Real theC)
	Creates the line from the equation theAX + theBY + theC = 0.0 Raises ConstructionError if Sqrt(theAtheA + theBtheB) <= Resolution from gp. Raised if Sqrt(theAtheA + theBtheB) <= Resolution from gp.

void	Reverse ()

gp_Lin2d	Reversed () const
	Reverses the positioning axis of this line. Note:

void	SetDirection (const gp_Dir2d &theV)
	Changes the direction of the line.

void	SetLocation (const gp_Pnt2d &theP)
	Changes the origin of the line.

void	SetPosition (const gp_Ax2d &theA)
	Complete redefinition of the line. The "Location" point of <theA> is the origin of the line. The "Direction" of <theA> is the direction of the line.

void	Coefficients (Standard_Real &theA, Standard_Real &theB, Standard_Real &theC) const
	Returns the normalized coefficients of the line : theA * X + theB * Y + theC = 0.

const gp_Dir2d &	Direction () const
	Returns the direction of the line.

const gp_Pnt2d &	Location () const
	Returns the location point (origin) of the line.

const gp_Ax2d &	Position () const
	Returns the axis placement one axis with the same location and direction as <me>.

Standard_Real	Angle (const gp_Lin2d &theOther) const
	Computes the angle between two lines in radians.

Standard_Boolean	Contains (const gp_Pnt2d &theP, const Standard_Real theLinearTolerance) const
	Returns true if this line contains the point theP, that is, if the distance between point theP and this line is less than or equal to theLinearTolerance.

Standard_Real	Distance (const gp_Pnt2d &theP) const
	Computes the distance between <me> and the point <theP>.

Standard_Real	Distance (const gp_Lin2d &theOther) const
	Computes the distance between two lines.

Standard_Real	SquareDistance (const gp_Pnt2d &theP) const
	Computes the square distance between <me> and the point <theP>.

Standard_Real	SquareDistance (const gp_Lin2d &theOther) const
	Computes the square distance between two lines.

gp_Lin2d	Normal (const gp_Pnt2d &theP) const
	Computes the line normal to the direction of <me>, passing through the point <theP>.

void	Mirror (const gp_Pnt2d &theP)

gp_Lin2d	Mirrored (const gp_Pnt2d &theP) const
	Performs the symmetrical transformation of a line with respect to the point <theP> which is the center of the symmetry.

void	Mirror (const gp_Ax2d &theA)

gp_Lin2d	Mirrored (const gp_Ax2d &theA) const
	Performs the symmetrical transformation of a line with respect to an axis placement which is the axis of the symmetry.

void	Rotate (const gp_Pnt2d &theP, const Standard_Real theAng)

gp_Lin2d	Rotated (const gp_Pnt2d &theP, const Standard_Real theAng) const
	Rotates a line. theP is the center of the rotation. theAng is the angular value of the rotation in radians.

void	Scale (const gp_Pnt2d &theP, const Standard_Real theS)

gp_Lin2d	Scaled (const gp_Pnt2d &theP, const Standard_Real theS) const
	Scales a line. theS is the scaling value. Only the origin of the line is modified.

void	Transform (const gp_Trsf2d &theT)

gp_Lin2d	Transformed (const gp_Trsf2d &theT) const
	Transforms a line with the transformation theT from class Trsf2d.

void	Translate (const gp_Vec2d &theV)

gp_Lin2d	Translated (const gp_Vec2d &theV) const
	Translates a line in the direction of the vector theV. The magnitude of the translation is the vector's magnitude.

void	Translate (const gp_Pnt2d &theP1, const gp_Pnt2d &theP2)

gp_Lin2d	Translated (const gp_Pnt2d &theP1, const gp_Pnt2d &theP2) const
	Translates a line from the point theP1 to the point theP2.

Detailed Description

Describes a line in 2D space. A line is positioned in the plane with an axis (a gp_Ax2d object) which gives the line its origin and unit vector. A line and an axis are similar objects, thus, we can convert one into the other. A line provides direct access to the majority of the edit and query functions available on its positioning axis. In addition, however, a line has specific functions for computing distances and positions. See Also GccAna and Geom2dGcc packages which provide functions for constructing lines defined by geometric constraints gce_MakeLin2d which provides functions for more complex line constructions Geom2d_Line which provides additional functions for constructing lines and works, in particular, with the parametric equations of lines.

Constructor & Destructor Documentation

◆ gp_Lin2d() [1/4]

gp_Lin2d::gp_Lin2d ( )

inline

Creates a Line corresponding to X axis of the reference coordinate system.

◆ gp_Lin2d() [2/4]

gp_Lin2d::gp_Lin2d ( const gp_Ax2d & theA )

inline

Creates a line located with theA.

◆ gp_Lin2d() [3/4]

gp_Lin2d::gp_Lin2d	(	const gp_Pnt2d &	theP,
		const gp_Dir2d &	theV )

inline

<theP> is the location point (origin) of the line and <theV> is the direction of the line.

◆ gp_Lin2d() [4/4]

gp_Lin2d::gp_Lin2d	(	const Standard_Real	theA,
		const Standard_Real	theB,
		const Standard_Real	theC )

Creates the line from the equation theA*X + theB*Y + theC = 0.0 Raises ConstructionError if Sqrt(theA*theA + theB*theB) <= Resolution from gp. Raised if Sqrt(theA*theA + theB*theB) <= Resolution from gp.

Member Function Documentation

◆ Angle()

Standard_Real gp_Lin2d::Angle ( const gp_Lin2d & theOther ) const

inline

Computes the angle between two lines in radians.

◆ Coefficients()

void gp_Lin2d::Coefficients	(	Standard_Real &	theA,
		Standard_Real &	theB,
		Standard_Real &	theC ) const

inline

Returns the normalized coefficients of the line : theA * X + theB * Y + theC = 0.

◆ Contains()

Standard_Boolean gp_Lin2d::Contains	(	const gp_Pnt2d &	theP,
		const Standard_Real	theLinearTolerance ) const

inline

Returns true if this line contains the point theP, that is, if the distance between point theP and this line is less than or equal to theLinearTolerance.

◆ Direction()

const gp_Dir2d & gp_Lin2d::Direction ( ) const

inline

Returns the direction of the line.

◆ Distance() [1/2]

Standard_Real gp_Lin2d::Distance ( const gp_Lin2d & theOther ) const

inline

Computes the distance between two lines.

◆ Distance() [2/2]

Standard_Real gp_Lin2d::Distance ( const gp_Pnt2d & theP ) const

inline

Computes the distance between <me> and the point <theP>.

◆ Location()

const gp_Pnt2d & gp_Lin2d::Location ( ) const

inline

Returns the location point (origin) of the line.

◆ Mirror() [1/2]

void gp_Lin2d::Mirror ( const gp_Ax2d & theA )

◆ Mirror() [2/2]

void gp_Lin2d::Mirror ( const gp_Pnt2d & theP )

◆ Mirrored() [1/2]

gp_Lin2d gp_Lin2d::Mirrored ( const gp_Ax2d & theA ) const

Performs the symmetrical transformation of a line with respect to an axis placement which is the axis of the symmetry.

◆ Mirrored() [2/2]

gp_Lin2d gp_Lin2d::Mirrored ( const gp_Pnt2d & theP ) const

Performs the symmetrical transformation of a line with respect to the point <theP> which is the center of the symmetry.

◆ Normal()

gp_Lin2d gp_Lin2d::Normal ( const gp_Pnt2d & theP ) const

inline

Computes the line normal to the direction of <me>, passing through the point <theP>.

◆ Position()

const gp_Ax2d & gp_Lin2d::Position ( ) const

inline

Returns the axis placement one axis with the same location and direction as <me>.

◆ Reverse()

void gp_Lin2d::Reverse ( )

inline

◆ Reversed()

gp_Lin2d gp_Lin2d::Reversed ( ) const

inline

Reverses the positioning axis of this line. Note:

Reverse assigns the result to this line, while
Reversed creates a new one.

◆ Rotate()

void gp_Lin2d::Rotate	(	const gp_Pnt2d &	theP,
		const Standard_Real	theAng )

inline

◆ Rotated()

gp_Lin2d gp_Lin2d::Rotated	(	const gp_Pnt2d &	theP,
		const Standard_Real	theAng ) const

inline

Rotates a line. theP is the center of the rotation. theAng is the angular value of the rotation in radians.

◆ Scale()

void gp_Lin2d::Scale	(	const gp_Pnt2d &	theP,
		const Standard_Real	theS )

inline

◆ Scaled()

gp_Lin2d gp_Lin2d::Scaled	(	const gp_Pnt2d &	theP,
		const Standard_Real	theS ) const

inline

Scales a line. theS is the scaling value. Only the origin of the line is modified.

◆ SetDirection()

void gp_Lin2d::SetDirection ( const gp_Dir2d & theV )

inline

Changes the direction of the line.

◆ SetLocation()

void gp_Lin2d::SetLocation ( const gp_Pnt2d & theP )

inline

Changes the origin of the line.

◆ SetPosition()

void gp_Lin2d::SetPosition ( const gp_Ax2d & theA )

inline

Complete redefinition of the line. The "Location" point of <theA> is the origin of the line. The "Direction" of <theA> is the direction of the line.

◆ SquareDistance() [1/2]

Standard_Real gp_Lin2d::SquareDistance ( const gp_Lin2d & theOther ) const

inline

Computes the square distance between two lines.

◆ SquareDistance() [2/2]

Standard_Real gp_Lin2d::SquareDistance ( const gp_Pnt2d & theP ) const

inline

Computes the square distance between <me> and the point <theP>.

◆ Transform()

void gp_Lin2d::Transform ( const gp_Trsf2d & theT )

inline

◆ Transformed()

gp_Lin2d gp_Lin2d::Transformed ( const gp_Trsf2d & theT ) const

inline

Transforms a line with the transformation theT from class Trsf2d.

◆ Translate() [1/2]

void gp_Lin2d::Translate	(	const gp_Pnt2d &	theP1,
		const gp_Pnt2d &	theP2 )

inline

◆ Translate() [2/2]

void gp_Lin2d::Translate ( const gp_Vec2d & theV )

inline

◆ Translated() [1/2]

gp_Lin2d gp_Lin2d::Translated	(	const gp_Pnt2d &	theP1,
		const gp_Pnt2d &	theP2 ) const

inline

Translates a line from the point theP1 to the point theP2.

◆ Translated() [2/2]

gp_Lin2d gp_Lin2d::Translated ( const gp_Vec2d & theV ) const

inline

Translates a line in the direction of the vector theV. The magnitude of the translation is the vector's magnitude.

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

gp_Lin2d.hxx

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ gp_Lin2d() [1/4]

◆ gp_Lin2d() [2/4]

◆ gp_Lin2d() [3/4]

◆ gp_Lin2d() [4/4]

Member Function Documentation

◆ Angle()

◆ Coefficients()

◆ Contains()

◆ Direction()

◆ Distance() [1/2]

◆ Distance() [2/2]

◆ Location()

◆ Mirror() [1/2]

◆ Mirror() [2/2]

◆ Mirrored() [1/2]

◆ Mirrored() [2/2]

◆ Normal()

◆ Position()

◆ Reverse()

◆ Reversed()

◆ Rotate()

◆ Rotated()

◆ Scale()

◆ Scaled()

◆ SetDirection()

◆ SetLocation()

◆ SetPosition()

◆ SquareDistance() [1/2]

◆ SquareDistance() [2/2]

◆ Transform()

◆ Transformed()

◆ Translate() [1/2]

◆ Translate() [2/2]

◆ Translated() [1/2]

◆ Translated() [2/2]