Open CASCADE Technology  7.4.0.beta
Public Member Functions
GeomAdaptor_Curve Class Reference

This class provides an interface between the services provided by any curve from the package Geom and those required of the curve by algorithms which use it. Creation of the loaded curve the curve is C1 by piece. More...

#include <GeomAdaptor_Curve.hxx>

Inheritance diagram for GeomAdaptor_Curve:
Inheritance graph
[legend]

Public Member Functions

 GeomAdaptor_Curve ()
 
 GeomAdaptor_Curve (const Handle< Geom_Curve > &C)
 
 GeomAdaptor_Curve (const Handle< Geom_Curve > &C, const Standard_Real UFirst, const Standard_Real ULast)
 ConstructionError is raised if Ufirst>Ulast. More...
 
void Reset ()
 Reset currently loaded curve (undone Load()). More...
 
void Load (const Handle< Geom_Curve > &C)
 
void Load (const Handle< Geom_Curve > &C, const Standard_Real UFirst, const Standard_Real ULast)
 ConstructionError is raised if Ufirst>Ulast. More...
 
const Handle< Geom_Curve > & Curve () const
 Provides a curve inherited from Hcurve from Adaptor. This is inherited to provide easy to use constructors. More...
 
Standard_Real FirstParameter () const override
 
Standard_Real LastParameter () const override
 
GeomAbs_Shape Continuity () const override
 
Standard_Integer NbIntervals (const GeomAbs_Shape S) const override
 Returns the number of intervals for continuity <S>. May be one if Continuity(me) >= <S> More...
 
void Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const override
 Stores in <T> the parameters bounding the intervals of continuity <S>. More...
 
Handle< Adaptor3d_HCurveTrim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const override
 Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last> More...
 
Standard_Boolean IsClosed () const override
 
Standard_Boolean IsPeriodic () const override
 
Standard_Real Period () const override
 
gp_Pnt Value (const Standard_Real U) const override
 Computes the point of parameter U on the curve. More...
 
void D0 (const Standard_Real U, gp_Pnt &P) const override
 Computes the point of parameter U. More...
 
void D1 (const Standard_Real U, gp_Pnt &P, gp_Vec &V) const override
 Computes the point of parameter U on the curve with its first derivative. More...
 
void D2 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2) const override
 Returns the point P of parameter U, the first and second derivatives V1 and V2. More...
 
void D3 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2, gp_Vec &V3) const override
 Returns the point P of parameter U, the first, the second and the third derivative. More...
 
gp_Vec DN (const Standard_Real U, const Standard_Integer N) const override
 The returned vector gives the value of the derivative for the order of derivation N. Warning : On the specific case of BSplineCurve: if the curve is cut in interval of continuity CN, the derivatives are computed on the current interval. else the derivatives are computed on the basis curve. Raised if N < 1. More...
 
Standard_Real Resolution (const Standard_Real R3d) const override
 returns the parametric resolution More...
 
GeomAbs_CurveType GetType () const override
 Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More...
 
gp_Lin Line () const override
 
gp_Circ Circle () const override
 
gp_Elips Ellipse () const override
 
gp_Hypr Hyperbola () const override
 
gp_Parab Parabola () const override
 
Standard_Integer Degree () const override
 this should NEVER make a copy of the underlying curve to read the relevant information More...
 
Standard_Boolean IsRational () const override
 this should NEVER make a copy of the underlying curve to read the relevant information More...
 
Standard_Integer NbPoles () const override
 this should NEVER make a copy of the underlying curve to read the relevant information More...
 
Standard_Integer NbKnots () const override
 this should NEVER make a copy of the underlying curve to read the relevant information More...
 
Handle< Geom_BezierCurveBezier () const override
 this will NOT make a copy of the Bezier Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last. More...
 
Handle< Geom_BSplineCurveBSpline () const override
 this will NOT make a copy of the BSpline Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last. More...
 
Handle< Geom_OffsetCurveOffsetCurve () const override
 
- Public Member Functions inherited from Adaptor3d_Curve
virtual ~Adaptor3d_Curve ()
 

Detailed Description

This class provides an interface between the services provided by any curve from the package Geom and those required of the curve by algorithms which use it. Creation of the loaded curve the curve is C1 by piece.

Polynomial coefficients of BSpline curves used for their evaluation are cached for better performance. Therefore these evaluations are not thread-safe and parallel evaluations need to be prevented.

Constructor & Destructor Documentation

◆ GeomAdaptor_Curve() [1/3]

GeomAdaptor_Curve::GeomAdaptor_Curve ( )

◆ GeomAdaptor_Curve() [2/3]

GeomAdaptor_Curve::GeomAdaptor_Curve ( const Handle< Geom_Curve > &  C)

◆ GeomAdaptor_Curve() [3/3]

GeomAdaptor_Curve::GeomAdaptor_Curve ( const Handle< Geom_Curve > &  C,
const Standard_Real  UFirst,
const Standard_Real  ULast 
)

ConstructionError is raised if Ufirst>Ulast.

Member Function Documentation

◆ Bezier()

Handle< Geom_BezierCurve > GeomAdaptor_Curve::Bezier ( ) const
overridevirtual

this will NOT make a copy of the Bezier Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last.

Reimplemented from Adaptor3d_Curve.

◆ BSpline()

Handle< Geom_BSplineCurve > GeomAdaptor_Curve::BSpline ( ) const
overridevirtual

this will NOT make a copy of the BSpline Curve : If you want to modify the Curve please make a copy yourself Also it will NOT trim the surface to myFirst/Last.

Reimplemented from Adaptor3d_Curve.

◆ Circle()

gp_Circ GeomAdaptor_Curve::Circle ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Continuity()

GeomAbs_Shape GeomAdaptor_Curve::Continuity ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Curve()

const Handle< Geom_Curve >& GeomAdaptor_Curve::Curve ( ) const

Provides a curve inherited from Hcurve from Adaptor. This is inherited to provide easy to use constructors.

◆ D0()

void GeomAdaptor_Curve::D0 ( const Standard_Real  U,
gp_Pnt P 
) const
overridevirtual

Computes the point of parameter U.

Reimplemented from Adaptor3d_Curve.

◆ D1()

void GeomAdaptor_Curve::D1 ( const Standard_Real  U,
gp_Pnt P,
gp_Vec V 
) const
overridevirtual

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

Warning : On the specific case of BSplineCurve: if the curve is cut in interval of continuity at least C1, the derivatives are computed on the current interval. else the derivatives are computed on the basis curve.

Reimplemented from Adaptor3d_Curve.

◆ D2()

void GeomAdaptor_Curve::D2 ( const Standard_Real  U,
gp_Pnt P,
gp_Vec V1,
gp_Vec V2 
) const
overridevirtual

Returns the point P of parameter U, the first and second derivatives V1 and V2.

Warning : On the specific case of BSplineCurve: if the curve is cut in interval of continuity at least C2, the derivatives are computed on the current interval. else the derivatives are computed on the basis curve.

Reimplemented from Adaptor3d_Curve.

◆ D3()

void GeomAdaptor_Curve::D3 ( const Standard_Real  U,
gp_Pnt P,
gp_Vec V1,
gp_Vec V2,
gp_Vec V3 
) const
overridevirtual

Returns the point P of parameter U, the first, the second and the third derivative.

Warning : On the specific case of BSplineCurve: if the curve is cut in interval of continuity at least C3, the derivatives are computed on the current interval. else the derivatives are computed on the basis curve.

Reimplemented from Adaptor3d_Curve.

◆ Degree()

Standard_Integer GeomAdaptor_Curve::Degree ( ) const
overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ DN()

gp_Vec GeomAdaptor_Curve::DN ( const Standard_Real  U,
const Standard_Integer  N 
) const
overridevirtual

The returned vector gives the value of the derivative for the order of derivation N. Warning : On the specific case of BSplineCurve: if the curve is cut in interval of continuity CN, the derivatives are computed on the current interval. else the derivatives are computed on the basis curve. Raised if N < 1.

Reimplemented from Adaptor3d_Curve.

◆ Ellipse()

gp_Elips GeomAdaptor_Curve::Ellipse ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ FirstParameter()

Standard_Real GeomAdaptor_Curve::FirstParameter ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ GetType()

GeomAbs_CurveType GeomAdaptor_Curve::GetType ( ) const
overridevirtual

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

Reimplemented from Adaptor3d_Curve.

◆ Hyperbola()

gp_Hypr GeomAdaptor_Curve::Hyperbola ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Intervals()

void GeomAdaptor_Curve::Intervals ( TColStd_Array1OfReal T,
const GeomAbs_Shape  S 
) const
overridevirtual

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

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

Reimplemented from Adaptor3d_Curve.

◆ IsClosed()

Standard_Boolean GeomAdaptor_Curve::IsClosed ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ IsPeriodic()

Standard_Boolean GeomAdaptor_Curve::IsPeriodic ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ IsRational()

Standard_Boolean GeomAdaptor_Curve::IsRational ( ) const
overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ LastParameter()

Standard_Real GeomAdaptor_Curve::LastParameter ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Line()

gp_Lin GeomAdaptor_Curve::Line ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Load() [1/2]

void GeomAdaptor_Curve::Load ( const Handle< Geom_Curve > &  C)

◆ Load() [2/2]

void GeomAdaptor_Curve::Load ( const Handle< Geom_Curve > &  C,
const Standard_Real  UFirst,
const Standard_Real  ULast 
)

ConstructionError is raised if Ufirst>Ulast.

◆ NbIntervals()

Standard_Integer GeomAdaptor_Curve::NbIntervals ( const GeomAbs_Shape  S) const
overridevirtual

Returns the number of intervals for continuity <S>. May be one if Continuity(me) >= <S>

Reimplemented from Adaptor3d_Curve.

◆ NbKnots()

Standard_Integer GeomAdaptor_Curve::NbKnots ( ) const
overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ NbPoles()

Standard_Integer GeomAdaptor_Curve::NbPoles ( ) const
overridevirtual

this should NEVER make a copy of the underlying curve to read the relevant information

Reimplemented from Adaptor3d_Curve.

◆ OffsetCurve()

Handle< Geom_OffsetCurve > GeomAdaptor_Curve::OffsetCurve ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Parabola()

gp_Parab GeomAdaptor_Curve::Parabola ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Period()

Standard_Real GeomAdaptor_Curve::Period ( ) const
overridevirtual

Reimplemented from Adaptor3d_Curve.

◆ Reset()

void GeomAdaptor_Curve::Reset ( )

Reset currently loaded curve (undone Load()).

◆ Resolution()

Standard_Real GeomAdaptor_Curve::Resolution ( const Standard_Real  R3d) const
overridevirtual

returns the parametric resolution

Reimplemented from Adaptor3d_Curve.

◆ Trim()

Handle< Adaptor3d_HCurve > GeomAdaptor_Curve::Trim ( const Standard_Real  First,
const Standard_Real  Last,
const Standard_Real  Tol 
) const
overridevirtual

Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last>

Reimplemented from Adaptor3d_Curve.

◆ Value()

gp_Pnt GeomAdaptor_Curve::Value ( const Standard_Real  U) const
overridevirtual

Computes the point of parameter U on the curve.

Reimplemented from Adaptor3d_Curve.


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