HLRBRep_Curve Class Reference

Defines a 2d curve by projection of a 3D curve on a plane with an optional perspective transformation. More...

#include <HLRBRep_Curve.hxx>

Public Member Functions
	HLRBRep_Curve ()
	Creates an undefined Curve.
void	Projector (const HLRAlgo_Projector *Proj)
BRepAdaptor_Curve &	Curve ()
	Returns the 3D curve.
void	Curve (const TopoDS_Edge &E)
	Sets the 3D curve to be projected.
const BRepAdaptor_Curve &	GetCurve () const
	Returns the 3D curve.
double	Parameter2d (const double P3d) const
	Returns the parameter on the 2d curve from the parameter on the 3d curve.
double	Parameter3d (const double P2d) const
	Returns the parameter on the 3d curve from the parameter on the 2d curve.
double	Update (double TotMin[16], double TotMax[16])
	Update the minmax and the internal data.
double	UpdateMinMax (double TotMin[16], double TotMax[16])
	Update the minmax returns tol for enlarge;.
double	Z (const double U) const
	Computes the Z coordinate of the point of parameter U on the curve in the viewing coordinate system.
gp_Pnt	Value3D (const double U) const
	Computes the 3D point of parameter U on the curve.
void	D0 (const double U, gp_Pnt &P) const
	Computes the 3D point of parameter U on the curve.
void	D1 (const double U, gp_Pnt &P, gp_Vec &V) const
	Computes the point of parameter U on the curve with its first derivative.
void	Tangent (const bool AtStart, gp_Pnt2d &P, gp_Dir2d &D) const
	Depending on <AtStart> computes the 2D point and tangent on the curve at sart (or at end). If the first derivative is null look after at start (or before at end) with the second derivative.
double	FirstParameter () const
double	LastParameter () const
GeomAbs_Shape	Continuity () const
int	NbIntervals (const GeomAbs_Shape S) const
	If necessary, breaks the curve in intervals of continuity . And returns the number of intervals.
void	Intervals (NCollection_Array1< double > &T, const GeomAbs_Shape S) const
	Stores in <T> the parameters bounding the intervals of continuity .
bool	IsClosed () const
bool	IsPeriodic () const
double	Period () const
gp_Pnt2d	Value (const double U) const
	Computes the point of parameter U on the curve.
void	D0 (const double U, gp_Pnt2d &P) const
	Computes the point of parameter U on the curve.
void	D1 (const double U, gp_Pnt2d &P, gp_Vec2d &V) const
	Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1.
void	D2 (const double U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2) const
	Raised if the continuity of the current interval is not C2.
void	D3 (const double U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2, gp_Vec2d &V3) const
	Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3.
gp_Vec2d	DN (const double U, const int N) const
	The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1.
double	Resolution (const double R3d) const
	Returns the parametric resolution corresponding to the real space resolution <R3d>.
GeomAbs_CurveType	GetType () const
	Returns the type of the curve in the current interval: Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.
gp_Lin2d	Line () const
gp_Circ2d	Circle () const
gp_Elips2d	Ellipse () const
gp_Hypr2d	Hyperbola () const
gp_Parab2d	Parabola () const
bool	IsRational () const
int	Degree () const
int	NbPoles () const
void	Poles (NCollection_Array1< gp_Pnt2d > &TP) const
void	Poles (const occ::handle< Geom_BSplineCurve > &aCurve, NCollection_Array1< gp_Pnt2d > &TP) const
void	PolesAndWeights (NCollection_Array1< gp_Pnt2d > &TP, NCollection_Array1< double > &TW) const
void	PolesAndWeights (const occ::handle< Geom_BSplineCurve > &aCurve, NCollection_Array1< gp_Pnt2d > &TP, NCollection_Array1< double > &TW) const
int	NbKnots () const
void	Knots (NCollection_Array1< double > &kn) const
void	Multiplicities (NCollection_Array1< int > &mu) const

Detailed Description

Defines a 2d curve by projection of a 3D curve on a plane with an optional perspective transformation.

Constructor & Destructor Documentation

HLRBRep_Curve()

HLRBRep_Curve::HLRBRep_Curve

(

)

Creates an undefined Curve.

Member Function Documentation

Circle()

gp_Circ2d HLRBRep_Curve::Circle

(

)

const

Continuity()

GeomAbs_Shape HLRBRep_Curve::Continuity

(

)

const

Curve() [1/2]

BRepAdaptor_Curve & HLRBRep_Curve::Curve

(

)

Returns the 3D curve.

Curve() [2/2]

void HLRBRep_Curve::Curve

(

const TopoDS_Edge &

E

)

Sets the 3D curve to be projected.

D0() [1/2]

void HLRBRep_Curve::D0	(	const double	U,
		gp_Pnt &	P ) const

Computes the 3D point of parameter U on the curve.

D0() [2/2]

void HLRBRep_Curve::D0	(	const double	U,
		gp_Pnt2d &	P ) const

Computes the point of parameter U on the curve.

D1() [1/2]

void HLRBRep_Curve::D1	(	const double	U,
		gp_Pnt &	P,
		gp_Vec &	V ) const

Computes the point of parameter U on the curve with its first derivative.

D1() [2/2]

void HLRBRep_Curve::D1	(	const double	U,
		gp_Pnt2d &	P,
		gp_Vec2d &	V ) const

Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1.

D2()

void HLRBRep_Curve::D2	(	const double	U,
		gp_Pnt2d &	P,
		gp_Vec2d &	V1,
		gp_Vec2d &	V2 ) const

Raised if the continuity of the current interval is not C2.

D3()

void HLRBRep_Curve::D3	(	const double	U,
		gp_Pnt2d &	P,
		gp_Vec2d &	V1,
		gp_Vec2d &	V2,
		gp_Vec2d &	V3 ) const

Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3.

Degree()

int HLRBRep_Curve::Degree

(

)

const

DN()

gp_Vec2d HLRBRep_Curve::DN	(	const double	U,
		const int	N ) const

The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1.

Ellipse()

gp_Elips2d HLRBRep_Curve::Ellipse

(

)

const

FirstParameter()

double HLRBRep_Curve::FirstParameter

(

)

const

GetCurve()

const BRepAdaptor_Curve & HLRBRep_Curve::GetCurve

(

)

const

Returns the 3D curve.

GetType()

GeomAbs_CurveType HLRBRep_Curve::GetType

(

)

const

Returns the type of the curve in the current interval: Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.

Hyperbola()

gp_Hypr2d HLRBRep_Curve::Hyperbola

(

)

const

Intervals()

void HLRBRep_Curve::Intervals	(	NCollection_Array1< double > &	T,
		const GeomAbs_Shape	S ) const

Stores in <T> the parameters bounding the intervals of continuity .

The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()

IsClosed()

bool HLRBRep_Curve::IsClosed

(

)

const

IsPeriodic()

bool HLRBRep_Curve::IsPeriodic

(

)

const

IsRational()

bool HLRBRep_Curve::IsRational

(

)

const

Knots()

void HLRBRep_Curve::Knots

(

NCollection_Array1< double > &

kn

)

const

LastParameter()

double HLRBRep_Curve::LastParameter

(

)

const

Line()

gp_Lin2d HLRBRep_Curve::Line

(

)

const

Multiplicities()

void HLRBRep_Curve::Multiplicities

(

NCollection_Array1< int > &

mu

)

const

NbIntervals()

int HLRBRep_Curve::NbIntervals

(

const GeomAbs_Shape

S

)

const

If necessary, breaks the curve in intervals of continuity . And returns the number of intervals.

NbKnots()

int HLRBRep_Curve::NbKnots

(

)

const

NbPoles()

int HLRBRep_Curve::NbPoles

(

)

const

Parabola()

gp_Parab2d HLRBRep_Curve::Parabola

(

)

const

Parameter2d()

double HLRBRep_Curve::Parameter2d

(

const double

P3d

)

const

Returns the parameter on the 2d curve from the parameter on the 3d curve.

Parameter3d()

double HLRBRep_Curve::Parameter3d

(

const double

P2d

)

const

Returns the parameter on the 3d curve from the parameter on the 2d curve.

Period()

double HLRBRep_Curve::Period

(

)

const

Poles() [1/2]

void HLRBRep_Curve::Poles	(	const occ::handle< Geom_BSplineCurve > &	aCurve,
		NCollection_Array1< gp_Pnt2d > &	TP ) const

Poles() [2/2]

void HLRBRep_Curve::Poles

(

NCollection_Array1< gp_Pnt2d > &

TP

)

const

PolesAndWeights() [1/2]

void HLRBRep_Curve::PolesAndWeights	(	const occ::handle< Geom_BSplineCurve > &	aCurve,
		NCollection_Array1< gp_Pnt2d > &	TP,
		NCollection_Array1< double > &	TW ) const

PolesAndWeights() [2/2]

void HLRBRep_Curve::PolesAndWeights	(	NCollection_Array1< gp_Pnt2d > &	TP,
		NCollection_Array1< double > &	TW ) const

Projector()

void HLRBRep_Curve::Projector ( const HLRAlgo_Projector * Proj )

inline

Resolution()

double HLRBRep_Curve::Resolution

(

const double

R3d

)

const

Returns the parametric resolution corresponding to the real space resolution <R3d>.

Tangent()

void HLRBRep_Curve::Tangent	(	const bool	AtStart,
		gp_Pnt2d &	P,
		gp_Dir2d &	D ) const

Depending on <AtStart> computes the 2D point and tangent on the curve at sart (or at end). If the first derivative is null look after at start (or before at end) with the second derivative.

Update()

double HLRBRep_Curve::Update	(	double	TotMin[16],
		double	TotMax[16] )

Update the minmax and the internal data.

UpdateMinMax()

double HLRBRep_Curve::UpdateMinMax	(	double	TotMin[16],
		double	TotMax[16] )

Update the minmax returns tol for enlarge;.

Value()

gp_Pnt2d HLRBRep_Curve::Value

(

const double

U

)

const

Computes the point of parameter U on the curve.

Value3D()

gp_Pnt HLRBRep_Curve::Value3D

(

const double

U

)

const

Computes the 3D point of parameter U on the curve.

Z()

double HLRBRep_Curve::Z

(

const double

U

)

const

Computes the Z coordinate of the point of parameter U on the curve in the viewing coordinate system.

---

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

• HLRBRep_Curve.hxx