Root class for 3D curves on which geometric algorithms work. An adapted curve is an interface between the services provided by a curve and those required of the curve by algorithms which use it. Two derived concrete classes are provided: More...

`#include <Adaptor3d_Curve.hxx>`

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## Public Member Functions

virtual Standard_Real FirstParameter () const

virtual Standard_Real LastParameter () const

virtual GeomAbs_Shape Continuity () const

virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const
Returns the number of intervals for continuity . May be one if Continuity(me) >= More...

virtual void Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const
Stores in <T> the parameters bounding the intervals of continuity . More...

virtual Handle< Adaptor3d_CurveTrim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const
Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last> More...

virtual Standard_Boolean IsClosed () const

virtual Standard_Boolean IsPeriodic () const

virtual Standard_Real Period () const

virtual gp_Pnt Value (const Standard_Real U) const
Computes the point of parameter U on the curve. More...

virtual void D0 (const Standard_Real U, gp_Pnt &P) const
Computes the point of parameter U on the curve. More...

virtual void D1 (const Standard_Real U, gp_Pnt &P, gp_Vec &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. More...

virtual void D2 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2) const
Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2. More...

virtual void D3 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2, gp_Vec &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...

virtual gp_Vec 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...

virtual Standard_Real Resolution (const Standard_Real R3d) const
Returns the parametric resolution corresponding to the real space resolution <R3d>. More...

virtual GeomAbs_CurveType GetType () const
Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More...

virtual gp_Lin Line () const

virtual gp_Circ Circle () const

virtual gp_Elips Ellipse () const

virtual gp_Hypr Hyperbola () const

virtual gp_Parab Parabola () const

virtual Standard_Integer Degree () const

virtual Standard_Boolean IsRational () const

virtual Standard_Integer NbPoles () const

virtual Standard_Integer NbKnots () const

virtual Handle< Geom_BezierCurveBezier () const

virtual Handle< Geom_BSplineCurveBSpline () const

virtual Handle< Geom_OffsetCurveOffsetCurve () const

Public Member Functions inherited from Standard_Transient
Standard_Transient ()
Empty constructor. More...

Standard_Transient (const Standard_Transient &)
Copy constructor – does nothing. More...

Standard_Transientoperator= (const Standard_Transient &)
Assignment operator, needed to avoid copying reference counter. More...

virtual ~Standard_Transient ()
Destructor must be virtual. More...

virtual void Delete () const
Memory deallocator for transient classes. More...

virtual const opencascade::handle< Standard_Type > & DynamicType () const

Standard_Boolean IsInstance (const opencascade::handle< Standard_Type > &theType) const
Returns a true value if this is an instance of Type. More...

Standard_Boolean IsInstance (const Standard_CString theTypeName) const
Returns a true value if this is an instance of TypeName. More...

Standard_Boolean IsKind (const opencascade::handle< Standard_Type > &theType) const
Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean IsKind (const Standard_CString theTypeName) const
Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_TransientThis () const
Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...

Standard_Integer GetRefCount () const
Get the reference counter of this object. More...

void IncrementRefCounter () const
Increments the reference counter of this object. More...

Standard_Integer DecrementRefCounter () const
Decrements the reference counter of this object; returns the decremented value. More...

Public Types inherited from Standard_Transient
typedef void base_type

Static Public Member Functions inherited from Standard_Transient
static const char * get_type_name ()

static const opencascade::handle< Standard_Type > & get_type_descriptor ()
Returns type descriptor of Standard_Transient class. More...

## Detailed Description

Root class for 3D curves on which geometric algorithms work. An adapted curve is an interface between the services provided by a curve and those required of the curve by algorithms which use it. Two derived concrete classes are provided:

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.

virtual

## ◆ Bezier()

 virtual Handle< Geom_BezierCurve > Adaptor3d_Curve::Bezier ( ) const
virtual

## ◆ BSpline()

 virtual Handle< Geom_BSplineCurve > Adaptor3d_Curve::BSpline ( ) const
virtual

## ◆ Circle()

 virtual gp_Circ Adaptor3d_Curve::Circle ( ) const
virtual

## ◆ Continuity()

 virtual GeomAbs_Shape Adaptor3d_Curve::Continuity ( ) const
virtual

## ◆ D0()

 virtual void Adaptor3d_Curve::D0 ( const Standard_Real U, gp_Pnt & P ) const
virtual

Computes the point of parameter U on the curve.

## ◆ D1()

 virtual void Adaptor3d_Curve::D1 ( const Standard_Real U, gp_Pnt & P, gp_Vec & V ) const
virtual

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()

 virtual void Adaptor3d_Curve::D2 ( const Standard_Real U, gp_Pnt & P, gp_Vec & V1, gp_Vec & V2 ) const
virtual

Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2.

## ◆ D3()

 virtual void Adaptor3d_Curve::D3 ( const Standard_Real U, gp_Pnt & P, gp_Vec & V1, gp_Vec & V2, gp_Vec & V3 ) const
virtual

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()

 virtual Standard_Integer Adaptor3d_Curve::Degree ( ) const
virtual

## ◆ DN()

 virtual gp_Vec Adaptor3d_Curve::DN ( const Standard_Real U, const Standard_Integer N ) const
virtual

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()

 virtual gp_Elips Adaptor3d_Curve::Ellipse ( ) const
virtual

## ◆ FirstParameter()

 virtual Standard_Real Adaptor3d_Curve::FirstParameter ( ) const
virtual

## ◆ GetType()

 virtual GeomAbs_CurveType Adaptor3d_Curve::GetType ( ) const
virtual

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

## ◆ Hyperbola()

 virtual gp_Hypr Adaptor3d_Curve::Hyperbola ( ) const
virtual

## ◆ Intervals()

 virtual void Adaptor3d_Curve::Intervals ( TColStd_Array1OfReal & T, const GeomAbs_Shape S ) const
virtual

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()

 virtual Standard_Boolean Adaptor3d_Curve::IsClosed ( ) const
virtual

## ◆ IsPeriodic()

 virtual Standard_Boolean Adaptor3d_Curve::IsPeriodic ( ) const
virtual

## ◆ IsRational()

 virtual Standard_Boolean Adaptor3d_Curve::IsRational ( ) const
virtual

## ◆ LastParameter()

 virtual Standard_Real Adaptor3d_Curve::LastParameter ( ) const
virtual

## ◆ Line()

 virtual gp_Lin Adaptor3d_Curve::Line ( ) const
virtual

## ◆ NbIntervals()

 virtual Standard_Integer Adaptor3d_Curve::NbIntervals ( const GeomAbs_Shape S ) const
virtual

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

## ◆ NbKnots()

 virtual Standard_Integer Adaptor3d_Curve::NbKnots ( ) const
virtual

## ◆ NbPoles()

 virtual Standard_Integer Adaptor3d_Curve::NbPoles ( ) const
virtual

## ◆ OffsetCurve()

 virtual Handle< Geom_OffsetCurve > Adaptor3d_Curve::OffsetCurve ( ) const
virtual

## ◆ Parabola()

 virtual gp_Parab Adaptor3d_Curve::Parabola ( ) const
virtual

## ◆ Period()

 virtual Standard_Real Adaptor3d_Curve::Period ( ) const
virtual

## ◆ Resolution()

 virtual Standard_Real Adaptor3d_Curve::Resolution ( const Standard_Real R3d ) const
virtual

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

virtual

## ◆ Trim()

 virtual Handle< Adaptor3d_Curve > Adaptor3d_Curve::Trim ( const Standard_Real First, const Standard_Real Last, const Standard_Real Tol ) const
virtual

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

## ◆ Value()

 virtual gp_Pnt Adaptor3d_Curve::Value ( const Standard_Real U ) const
virtual

Computes the point of parameter U on the curve.

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