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. More...
void	Projector (const Standard_Address Proj)
BRepAdaptor_Curve &	Curve ()
	Returns the 3D curve. More...
void	Curve (const TopoDS_Edge &E)
	Sets the 3D curve to be projected. More...
const BRepAdaptor_Curve &	GetCurve () const
	Returns the 3D curve. More...
Standard_Real	Parameter2d (const Standard_Real P3d) const
	Returns the parameter on the 2d curve from the parameter on the 3d curve. More...
Standard_Real	Parameter3d (const Standard_Real P2d) const
	Returns the parameter on the 3d curve from the parameter on the 2d curve. More...
Standard_Real	Update (const Standard_Address TotMin, const Standard_Address TotMax)
	Update the minmax and the internal data More...
Standard_Real	UpdateMinMax (const Standard_Address TotMin, const Standard_Address TotMax)
	Update the minmax returns tol for enlarge; More...
Standard_Real	Z (const Standard_Real U) const
	Computes the Z coordinate of the point of <br> parameter U on the curve in the viewing coordinate system More...
gp_Pnt	Value3D (const Standard_Real U) const
	Computes the 3D point of parameter U on the <br> curve. More...
void	D0 (const Standard_Real U, gp_Pnt &P) const
	Computes the 3D point of parameter U on the <br> curve. More...
void	D1 (const Standard_Real U, gp_Pnt &P, gp_Vec &V) const
	Computes the point of parameter U on the curve <br> with its first derivative. More...
void	Tangent (const Standard_Boolean AtStart, gp_Pnt2d &P, gp_Dir2d &D) const
	Depending on <AtStart> computes the 2D point and <br> 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. More...
Standard_Real	FirstParameter () const
Standard_Real	LastParameter () const
GeomAbs_Shape	Continuity () const
Standard_Integer	NbIntervals (const GeomAbs_Shape S)
	If necessary, breaks the curve in intervals of continuity <S>. And returns the number of intervals. More...
void	Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S)
	Stores in <T> the parameters bounding the intervals <br> of continuity <S>. <br> The array must provide enough room to accomodate for the parameters. i.e. T.Length() > NbIntervals() More...
Standard_Boolean	IsClosed () const
Standard_Boolean	IsPeriodic () const
Standard_Real	Period () const
gp_Pnt2d	Value (const Standard_Real U) const
	Computes the point of parameter U on the curve. <br> More...
void	D0 (const Standard_Real U, gp_Pnt2d &P) const
	Computes the point of parameter U on the curve. More...
void	D1 (const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V) const
	Computes the point of parameter U on the curve <br> with its first derivative. //! Raised if the continuity of the current interval is not C1. More...
void	D2 (const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2) const
	Raised if the continuity of the current interval <br> is not C2. More...
void	D3 (const Standard_Real 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. More...
gp_Vec2d	DN (const Standard_Real U, const Standard_Integer 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. More...
Standard_Real	Resolution (const Standard_Real R3d) const
	Returns the parametric resolution corresponding to the real space resolution <R3d>. More...
GeomAbs_CurveType	GetType () const
	Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More...
gp_Lin2d	Line () const
gp_Circ2d	Circle () const
gp_Elips2d	Ellipse () const
gp_Hypr2d	Hyperbola () const
gp_Parab2d	Parabola () const
Standard_Boolean	IsRational () const
Standard_Integer	Degree () const
Standard_Integer	NbPoles () const
void	Poles (TColgp_Array1OfPnt2d &TP) const
void	Poles (const Handle< Geom_BSplineCurve > &aCurve, TColgp_Array1OfPnt2d &TP) const
void	PolesAndWeights (TColgp_Array1OfPnt2d &TP, TColStd_Array1OfReal &TW) const
void	PolesAndWeights (const Handle< Geom_BSplineCurve > &aCurve, TColgp_Array1OfPnt2d &TP, TColStd_Array1OfReal &TW) const
Standard_Integer	NbKnots () const
void	Knots (TColStd_Array1OfReal &kn) const
void	Multiplicities (TColStd_Array1OfInteger &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

(

)

Creates an undefined Curve.

Member Function Documentation

gp_Circ2d HLRBRep_Curve::Circle

(

)

const

GeomAbs_Shape HLRBRep_Curve::Continuity

(

)

const

BRepAdaptor_Curve& HLRBRep_Curve::Curve

(

)

Returns the 3D curve.

void HLRBRep_Curve::Curve

(

const TopoDS_Edge &

E

)

Sets the 3D curve to be projected.

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

  Computes the 3D point   of parameter U  on the <br>

curve.

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

Computes the point of parameter U on the curve.

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

  Computes the point of parameter  U on the curve <br>

with its first derivative.

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

Computes the point  of  parameter U on the curve <br>

with its first derivative.
//! Raised if the continuity of the current interval
is not C1.

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

Raised if the continuity of the current interval <br>

is not C2.

void HLRBRep_Curve::D3	(	const Standard_Real	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.

Standard_Integer HLRBRep_Curve::Degree

(

)

const

gp_Vec2d HLRBRep_Curve::DN	(	const Standard_Real	U,
		const Standard_Integer	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.

gp_Elips2d HLRBRep_Curve::Ellipse

(

)

const

Standard_Real HLRBRep_Curve::FirstParameter

(

)

const

const BRepAdaptor_Curve& HLRBRep_Curve::GetCurve

(

)

const

Returns the 3D curve.

GeomAbs_CurveType HLRBRep_Curve::GetType

(

)

const

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

gp_Hypr2d HLRBRep_Curve::Hyperbola

(

)

const

void HLRBRep_Curve::Intervals	(	TColStd_Array1OfReal &	T,
		const GeomAbs_Shape	S
	)

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

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

Standard_Boolean HLRBRep_Curve::IsClosed

(

)

const

Standard_Boolean HLRBRep_Curve::IsPeriodic

(

)

const

Standard_Boolean HLRBRep_Curve::IsRational

(

)

const

void HLRBRep_Curve::Knots

(

TColStd_Array1OfReal &

kn

)

const

Standard_Real HLRBRep_Curve::LastParameter

(

)

const

gp_Lin2d HLRBRep_Curve::Line

(

)

const

void HLRBRep_Curve::Multiplicities

(

TColStd_Array1OfInteger &

mu

)

const

Standard_Integer HLRBRep_Curve::NbIntervals

(

const GeomAbs_Shape

S

)

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

Standard_Integer HLRBRep_Curve::NbKnots

(

)

const

Standard_Integer HLRBRep_Curve::NbPoles

(

)

const

gp_Parab2d HLRBRep_Curve::Parabola

(

)

const

Standard_Real HLRBRep_Curve::Parameter2d

(

const Standard_Real

P3d

)

const

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

Standard_Real HLRBRep_Curve::Parameter3d

(

const Standard_Real

P2d

)

const

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

Standard_Real HLRBRep_Curve::Period

(

)

const

void HLRBRep_Curve::Poles

(

TColgp_Array1OfPnt2d &

TP

)

const

void HLRBRep_Curve::Poles	(	const Handle< Geom_BSplineCurve > &	aCurve,
		TColgp_Array1OfPnt2d &	TP
	)		const

void HLRBRep_Curve::PolesAndWeights	(	TColgp_Array1OfPnt2d &	TP,
		TColStd_Array1OfReal &	TW
	)		const

void HLRBRep_Curve::PolesAndWeights	(	const Handle< Geom_BSplineCurve > &	aCurve,
		TColgp_Array1OfPnt2d &	TP,
		TColStd_Array1OfReal &	TW
	)		const

void HLRBRep_Curve::Projector

(

const Standard_Address

Proj

)

Standard_Real HLRBRep_Curve::Resolution

(

const Standard_Real

R3d

)

const

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

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

 Depending on <AtStart> computes the 2D point and <br>

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.

Standard_Real HLRBRep_Curve::Update	(	const Standard_Address	TotMin,
		const Standard_Address	TotMax
	)

Update the minmax and the internal data

Standard_Real HLRBRep_Curve::UpdateMinMax	(	const Standard_Address	TotMin,
		const Standard_Address	TotMax
	)

Update the minmax returns tol for enlarge;

gp_Pnt2d HLRBRep_Curve::Value

(

const Standard_Real

U

)

const

 Computes the point of parameter U on the curve. <br>

gp_Pnt HLRBRep_Curve::Value3D

(

const Standard_Real

U

)

const

  Computes the 3D point   of parameter U  on the <br>

curve.

Standard_Real HLRBRep_Curve::Z

(

const Standard_Real

U

)

const

 Computes the Z    coordinate  of the  point  of <br>

parameter U on the curve in the viewing coordinate system

---

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

• HLRBRep_Curve.hxx