Convert_ConicToBSplineCurve Class Reference

Root class for algorithms which convert a conic curve into
a BSpline curve (CircleToBSplineCurve, EllipseToBSplineCurve,
HyperbolaToBSplineCurve, ParabolaToBSplineCurve).
These algorithms all work on 2D curves from the gp
package and compute all the data needed to construct a
BSpline curve equivalent to the conic curve. This data consists of:
More...

#include <Convert_ConicToBSplineCurve.hxx>

Inheritance diagram for Convert_ConicToBSplineCurve:

Public Member Functions
Standard_Integer	Degree () const
	Returns the degree of the BSpline curve whose data is <br> computed in this framework. More...
Standard_Integer	NbPoles () const
	Returns the number of poles of the BSpline curve whose <br> data is computed in this framework. More...
Standard_Integer	NbKnots () const
	Returns the number of knots of the BSpline curve whose <br> data is computed in this framework. More...
Standard_Boolean	IsPeriodic () const
	Returns true if the BSpline curve whose data is computed in <br> this framework is periodic. More...
gp_Pnt2d	Pole (const Standard_Integer Index) const
	Returns the pole of index Index to the poles table of the <br> BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the poles table of the BSpline curve whose data is computed in this framework. More...
Standard_Real	Weight (const Standard_Integer Index) const
	Returns the weight of the pole of index Index to the poles <br> table of the BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the poles table of the BSpline curve whose data is computed in this framework. More...
Standard_Real	Knot (const Standard_Integer Index) const
	Returns the knot of index Index to the knots table of the <br> BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the knots table of the BSpline curve whose data is computed in this framework. More...
Standard_Integer	Multiplicity (const Standard_Integer Index) const
	Returns the multiplicity of the knot of index Index to the <br> knots table of the BSpline curve whose data is computed in this framework. Exceptions Standard_OutOfRange if Index is outside the bounds of the knots table of the BSpline curve whose data is computed in this framework. More...
void	BuildCosAndSin (const Convert_ParameterisationType Parametrisation, Handle< TColStd_HArray1OfReal > &CosNumerator, Handle< TColStd_HArray1OfReal > &SinNumerator, Handle< TColStd_HArray1OfReal > &Denominator, Standard_Integer &Degree, Handle< TColStd_HArray1OfReal > &Knots, Handle< TColStd_HArray1OfInteger > &Mults) const
void	BuildCosAndSin (const Convert_ParameterisationType Parametrisation, const Standard_Real UFirst, const Standard_Real ULast, Handle< TColStd_HArray1OfReal > &CosNumerator, Handle< TColStd_HArray1OfReal > &SinNumerator, Handle< TColStd_HArray1OfReal > &Denominator, Standard_Integer &Degree, Handle< TColStd_HArray1OfReal > &Knots, Handle< TColStd_HArray1OfInteger > &Mults) const

Protected Member Functions
	Convert_ConicToBSplineCurve (const Standard_Integer NumberOfPoles, const Standard_Integer NumberOfKnots, const Standard_Integer Degree)

Protected Attributes
Handle_TColgp_HArray1OfPnt2d	poles
Handle_TColStd_HArray1OfReal	weights
Handle_TColStd_HArray1OfReal	knots
Handle_TColStd_HArray1OfInteger	mults
Standard_Integer	degree
Standard_Integer	nbPoles
Standard_Integer	nbKnots
Standard_Boolean	isperiodic

Detailed Description

Root class for algorithms which convert a conic curve into
a BSpline curve (CircleToBSplineCurve, EllipseToBSplineCurve,
HyperbolaToBSplineCurve, ParabolaToBSplineCurve).
These algorithms all work on 2D curves from the gp
package and compute all the data needed to construct a
BSpline curve equivalent to the conic curve. This data consists of:

• the degree of the curve,
  
• the periodic characteristics of the curve,
  
• a poles table with associated weights,
  
• a knots table with associated multiplicities.
  The abstract class ConicToBSplineCurve provides a
  framework for storing and consulting this computed data.
  The data may then be used to construct a
  Geom2d_BSplineCurve curvSuper class of the following classes :
  This abstract class implements the methods to get the geometric
  representation of the B-spline curve equivalent to the conic.
  The B-spline is computed at the creation time in the sub classes.
  The B-spline curve is defined with its degree, its control points
  (Poles), its weights, its knots and their multiplicity.
  All the geometric entities used in this package are defined in 2D
  space.
  KeyWords :
  Convert, Conic, BSplineCurve, 2D.
  

Constructor & Destructor Documentation

Convert_ConicToBSplineCurve::Convert_ConicToBSplineCurve ( const Standard_Integer  NumberOfPoles, const Standard_Integer  NumberOfKnots, const Standard_Integer  Degree  )

protected

Member Function Documentation

void Convert_ConicToBSplineCurve::BuildCosAndSin	(	const Convert_ParameterisationType	Parametrisation,
		Handle< TColStd_HArray1OfReal > &	CosNumerator,
		Handle< TColStd_HArray1OfReal > &	SinNumerator,
		Handle< TColStd_HArray1OfReal > &	Denominator,
		Standard_Integer &	Degree,
		Handle< TColStd_HArray1OfReal > &	Knots,
		Handle< TColStd_HArray1OfInteger > &	Mults
	)		const

void Convert_ConicToBSplineCurve::BuildCosAndSin	(	const Convert_ParameterisationType	Parametrisation,
		const Standard_Real	UFirst,
		const Standard_Real	ULast,
		Handle< TColStd_HArray1OfReal > &	CosNumerator,
		Handle< TColStd_HArray1OfReal > &	SinNumerator,
		Handle< TColStd_HArray1OfReal > &	Denominator,
		Standard_Integer &	Degree,
		Handle< TColStd_HArray1OfReal > &	Knots,
		Handle< TColStd_HArray1OfInteger > &	Mults
	)		const

Standard_Integer Convert_ConicToBSplineCurve::Degree

(

)

const

 Returns the degree of the BSpline curve whose data is <br>

computed in this framework.

Standard_Boolean Convert_ConicToBSplineCurve::IsPeriodic

(

)

const

 Returns true if the BSpline curve whose data is computed in <br>

this framework is periodic.

Standard_Real Convert_ConicToBSplineCurve::Knot

(

const Standard_Integer

Index

)

const

 Returns the knot of index Index to the knots table of the <br>

BSpline curve whose data is computed in this framework.
Exceptions
Standard_OutOfRange if Index is outside the bounds of
the knots table of the BSpline curve whose data is computed in this framework.

Standard_Integer Convert_ConicToBSplineCurve::Multiplicity

(

const Standard_Integer

Index

)

const

 Returns the multiplicity of the knot of index Index to the <br>

knots table of the BSpline curve whose data is computed in this framework.
Exceptions
Standard_OutOfRange if Index is outside the bounds of
the knots table of the BSpline curve whose data is computed in this framework.

Standard_Integer Convert_ConicToBSplineCurve::NbKnots

(

)

const

 Returns the number of knots of the BSpline curve whose <br>

data is computed in this framework.

Standard_Integer Convert_ConicToBSplineCurve::NbPoles

(

)

const

 Returns the number of poles of the BSpline curve whose <br>

data is computed in this framework.

gp_Pnt2d Convert_ConicToBSplineCurve::Pole

(

const Standard_Integer

Index

)

const

 Returns the pole of index Index to the poles table of the <br>

BSpline curve whose data is computed in this framework.
Exceptions
Standard_OutOfRange if Index is outside the bounds of
the poles table of the BSpline curve whose data is computed in this framework.

Standard_Real Convert_ConicToBSplineCurve::Weight

(

const Standard_Integer

Index

)

const

 Returns the weight of the pole of index Index to the poles <br>

table of the BSpline curve whose data is computed in this framework.
Exceptions
Standard_OutOfRange if Index is outside the bounds of
the poles table of the BSpline curve whose data is computed in this framework.

Field Documentation

Standard_Integer Convert_ConicToBSplineCurve::degree

protected

Standard_Boolean Convert_ConicToBSplineCurve::isperiodic

protected

Handle_TColStd_HArray1OfReal Convert_ConicToBSplineCurve::knots

protected

Handle_TColStd_HArray1OfInteger Convert_ConicToBSplineCurve::mults

protected

Standard_Integer Convert_ConicToBSplineCurve::nbKnots

protected

Standard_Integer Convert_ConicToBSplineCurve::nbPoles

protected

Handle_TColgp_HArray1OfPnt2d Convert_ConicToBSplineCurve::poles

protected

Handle_TColStd_HArray1OfReal Convert_ConicToBSplineCurve::weights

protected

---

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

• Convert_ConicToBSplineCurve.hxx