IGESGeom_SplineCurve Class Reference

Defines IGESSplineCurve, Type <112> Form <0>
in package IGESGeom
The parametric spline is a sequence of parametric
polynomial segments. The curve could be of the type
Linear, Quadratic, Cubic, Wilson-Fowler, Modified
Wilson-Fowler, B-Spline. The N polynomial segments
are delimited by the break points T(1), T(2), T(3),
..., T(N+1).

#include <IGESGeom_SplineCurve.hxx>

Inheritance diagram for IGESGeom_SplineCurve:

Public Member Functions
	IGESGeom_SplineCurve ()
void	Init (const Standard_Integer aType, const Standard_Integer aDegree, const Standard_Integer nbDimensions, const Handle< TColStd_HArray1OfReal > &allBreakPoints, const Handle< TColStd_HArray2OfReal > &allXPolynomials, const Handle< TColStd_HArray2OfReal > &allYPolynomials, const Handle< TColStd_HArray2OfReal > &allZPolynomials, const Handle< TColStd_HArray1OfReal > &allXvalues, const Handle< TColStd_HArray1OfReal > &allYvalues, const Handle< TColStd_HArray1OfReal > &allZvalues)
	This method is used to set the fields of the class SplineCurve
Standard_Integer	SplineType () const
	returns the type of Spline curve
Standard_Integer	Degree () const
	returns the degree of the curve
Standard_Integer	NbDimensions () const
	returns the number of dimensions 2 = Planar 3 = Non-planar
Standard_Integer	NbSegments () const
	returns the number of segments
Standard_Real	BreakPoint (const Standard_Integer Index) const
	returns breakpoint of piecewise polynomial raises exception if Index <= 0 or Index > NbSegments() + 1
void	XCoordPolynomial (const Standard_Integer Index, Standard_Real &AX, Standard_Real &BX, Standard_Real &CX, Standard_Real &DX) const
	returns X coordinate polynomial for segment referred to by Index raises exception if Index <= 0 or Index > NbSegments()
void	YCoordPolynomial (const Standard_Integer Index, Standard_Real &AY, Standard_Real &BY, Standard_Real &CY, Standard_Real &DY) const
	returns Y coordinate polynomial for segment referred to by Index raises exception if Index <= 0 or Index > NbSegments()
void	ZCoordPolynomial (const Standard_Integer Index, Standard_Real &AZ, Standard_Real &BZ, Standard_Real &CZ, Standard_Real &DZ) const
	returns Z coordinate polynomial for segment referred to by Index raises exception if Index <= 0 or Index > NbSegments()
void	XValues (Standard_Real &TPX0, Standard_Real &TPX1, Standard_Real &TPX2, Standard_Real &TPX3) const
	returns the value of X polynomial, the values of 1st, 2nd and 3rd derivatives of the X polynomial at the terminate point
void	YValues (Standard_Real &TPY0, Standard_Real &TPY1, Standard_Real &TPY2, Standard_Real &TPY3) const
	returns the value of Y polynomial, the values of 1st, 2nd and 3rd derivatives of the Y polynomial at the termminate point
void	ZValues (Standard_Real &TPZ0, Standard_Real &TPZ1, Standard_Real &TPZ2, Standard_Real &TPZ3) const
	returns the value of Z polynomial, the values of 1st, 2nd and 3rd derivatives of the Z polynomial at the termminate point

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Constructor & Destructor Documentation

IGESGeom_SplineCurve::IGESGeom_SplineCurve

(

)

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Member Function Documentation

Standard_Real IGESGeom_SplineCurve::BreakPoint

(

const Standard_Integer

Index

)

const

Standard_Integer IGESGeom_SplineCurve::Degree

(

)

const

void IGESGeom_SplineCurve::Init	(	const Standard_Integer	aType,
		const Standard_Integer	aDegree,
		const Standard_Integer	nbDimensions,
		const Handle< TColStd_HArray1OfReal > &	allBreakPoints,
		const Handle< TColStd_HArray2OfReal > &	allXPolynomials,
		const Handle< TColStd_HArray2OfReal > &	allYPolynomials,
		const Handle< TColStd_HArray2OfReal > &	allZPolynomials,
		const Handle< TColStd_HArray1OfReal > &	allXvalues,
		const Handle< TColStd_HArray1OfReal > &	allYvalues,
		const Handle< TColStd_HArray1OfReal > &	allZvalues
	)

  - aType           : Spline Type <br>
                      1 = Linear <br>
                      2 = Quadratic <br>
                      3 = Cubic <br>
                      4 = Wilson-Fowler <br>
                      5 = Modified Wilson-Fowler <br>
                      6 = B Spline <br>
  - aDegree         : Degree of continuity w.r.t. arc length <br>
  - nbDimensions    : Number of dimensions <br>
                      2 = Planar <br>
                      3 = Non-planar <br>
  - allBreakPoints  : Array of break points <br>
  - allXPolynomials : X coordinate polynomials of segments <br>
  - allYPolynomials : Y coordinate polynomials of segments <br>
  - allZPolynomials : Z coordinate polynomials of segments <br>
  - allXValues      : Values of 1st, 2nd, 3rd derivatives of <br>
                      X polynomials at the terminate point <br>
                      and values of X at terminate point <br>
  - allYValues      : Values of 1st, 2nd, 3rd derivatives of <br>
                      Y polynomials at the terminate point <br>
                      and values of Y at terminate point <br>
  - allZvalues      : Values of 1st, 2nd, 3rd derivatives of <br>
                      Z polynomials at the terminate point <br>
                      and values of Z at terminate point <br>

raises exception if allXPolynomials, allYPolynomials
& allZPolynomials are not of same size OR allXValues, allYValues
& allZValues are not of size 4

Standard_Integer IGESGeom_SplineCurve::NbDimensions

(

)

const

Standard_Integer IGESGeom_SplineCurve::NbSegments

(

)

const

Standard_Integer IGESGeom_SplineCurve::SplineType

(

)

const

void IGESGeom_SplineCurve::XCoordPolynomial	(	const Standard_Integer	Index,
		Standard_Real &	AX,
		Standard_Real &	BX,
		Standard_Real &	CX,
		Standard_Real &	DX
	)		const

void IGESGeom_SplineCurve::XValues	(	Standard_Real &	TPX0,
		Standard_Real &	TPX1,
		Standard_Real &	TPX2,
		Standard_Real &	TPX3
	)		const

void IGESGeom_SplineCurve::YCoordPolynomial	(	const Standard_Integer	Index,
		Standard_Real &	AY,
		Standard_Real &	BY,
		Standard_Real &	CY,
		Standard_Real &	DY
	)		const

void IGESGeom_SplineCurve::YValues	(	Standard_Real &	TPY0,
		Standard_Real &	TPY1,
		Standard_Real &	TPY2,
		Standard_Real &	TPY3
	)		const

void IGESGeom_SplineCurve::ZCoordPolynomial	(	const Standard_Integer	Index,
		Standard_Real &	AZ,
		Standard_Real &	BZ,
		Standard_Real &	CZ,
		Standard_Real &	DZ
	)		const

void IGESGeom_SplineCurve::ZValues	(	Standard_Real &	TPZ0,
		Standard_Real &	TPZ1,
		Standard_Real &	TPZ2,
		Standard_Real &	TPZ3
	)		const

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

• IGESGeom_SplineCurve.hxx