Geom2dLProp_CLProps2d Class Reference

#include <Geom2dLProp_CLProps2d.hxx>

Public Member Functions
	Geom2dLProp_CLProps2d (const Handle< Geom2d_Curve > &C, const Standard_Integer N, const Standard_Real Resolution)
	Initializes the local properties of the curve The current point and the derivatives are computed at the same time, which allows an optimization of the computation time. <N> indicates the maximum number of derivations to be done (0, 1, 2 or 3). For example, to compute only the tangent, N should be equal to 1. <Resolution> is the linear tolerance (it is used to test if a vector is null). More...
	Geom2dLProp_CLProps2d (const Handle< Geom2d_Curve > &C, const Standard_Real U, const Standard_Integer N, const Standard_Real Resolution)
	Same as previous constructor but here the parameter is set to the value <U>. All the computations done will be related to and <U>. More...
	Geom2dLProp_CLProps2d (const Standard_Integer N, const Standard_Real Resolution)
	Same as previous constructor but here the parameter is set to the value <U> and the curve is set with SetCurve. the curve can have a empty constructor All the computations done will be related to and <U> when the functions "set" will be done. More...
void	SetParameter (const Standard_Real U)
	Initializes the local properties of the curve for the parameter value <U>. More...
void	SetCurve (const Handle< Geom2d_Curve > &C)
	Initializes the local properties of the curve for the new curve. More...
const gp_Pnt2d &	Value () const
	Returns the Point. More...
const gp_Vec2d &	D1 ()
	Returns the first derivative. The derivative is computed if it has not been yet. More...
const gp_Vec2d &	D2 ()
	Returns the second derivative. The derivative is computed if it has not been yet. More...
const gp_Vec2d &	D3 ()
	Returns the third derivative. The derivative is computed if it has not been yet. More...
Standard_Boolean	IsTangentDefined ()
	Returns True if the tangent is defined. For example, the tangent is not defined if the three first derivatives are all null. More...
void	Tangent (gp_Dir2d &D)
	output the tangent direction <D> More...
Standard_Real	Curvature ()
	Returns the curvature. More...
void	Normal (gp_Dir2d &N)
	Returns the normal direction <N>. More...
void	CentreOfCurvature (gp_Pnt2d &P)
	Returns the centre of curvature. More...

Constructor & Destructor Documentation

Geom2dLProp_CLProps2d() [1/3]

Geom2dLProp_CLProps2d::Geom2dLProp_CLProps2d	(	const Handle< Geom2d_Curve > &	C,
		const Standard_Integer	N,
		const Standard_Real	Resolution
	)

Initializes the local properties of the curve The current point and the derivatives are computed at the same time, which allows an optimization of the computation time. <N> indicates the maximum number of derivations to be done (0, 1, 2 or 3). For example, to compute only the tangent, N should be equal to 1. <Resolution> is the linear tolerance (it is used to test if a vector is null).

Geom2dLProp_CLProps2d() [2/3]

Geom2dLProp_CLProps2d::Geom2dLProp_CLProps2d	(	const Handle< Geom2d_Curve > &	C,
		const Standard_Real	U,
		const Standard_Integer	N,
		const Standard_Real	Resolution
	)

Same as previous constructor but here the parameter is set to the value <U>. All the computations done will be related to and <U>.

Geom2dLProp_CLProps2d() [3/3]

Geom2dLProp_CLProps2d::Geom2dLProp_CLProps2d	(	const Standard_Integer	N,
		const Standard_Real	Resolution
	)

Same as previous constructor but here the parameter is set to the value <U> and the curve is set with SetCurve. the curve can have a empty constructor All the computations done will be related to and <U> when the functions "set" will be done.

Member Function Documentation

CentreOfCurvature()

void Geom2dLProp_CLProps2d::CentreOfCurvature

(

gp_Pnt2d &

P

)

Returns the centre of curvature.

.

Curvature()

Standard_Real Geom2dLProp_CLProps2d::Curvature

(

)

Returns the curvature.

D1()

const gp_Vec2d& Geom2dLProp_CLProps2d::D1

(

)

Returns the first derivative. The derivative is computed if it has not been yet.

D2()

const gp_Vec2d& Geom2dLProp_CLProps2d::D2

(

)

Returns the second derivative. The derivative is computed if it has not been yet.

D3()

const gp_Vec2d& Geom2dLProp_CLProps2d::D3

(

)

Returns the third derivative. The derivative is computed if it has not been yet.

IsTangentDefined()

Standard_Boolean Geom2dLProp_CLProps2d::IsTangentDefined

(

)

Returns True if the tangent is defined. For example, the tangent is not defined if the three first derivatives are all null.

Normal()

void Geom2dLProp_CLProps2d::Normal

(

gp_Dir2d &

N

)

Returns the normal direction <N>.

SetCurve()

void Geom2dLProp_CLProps2d::SetCurve

(

const Handle< Geom2d_Curve > &

C

)

Initializes the local properties of the curve for the new curve.

SetParameter()

void Geom2dLProp_CLProps2d::SetParameter

(

const Standard_Real

U

)

Initializes the local properties of the curve for the parameter value <U>.

Tangent()

void Geom2dLProp_CLProps2d::Tangent

(

gp_Dir2d &

D

)

output the tangent direction <D>

Value()

const gp_Pnt2d& Geom2dLProp_CLProps2d::Value

(

)

const

Returns the Point.

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

• Geom2dLProp_CLProps2d.hxx