This package provides an implementation of algorithmes to do
the conversion between equivalent geometric entities from
package Geom2d.
It gives the possibility :
. to obtain the B-spline representation of bounded curves.
. to split a B-spline curve into several B-spline curves
with some constraints of continuity,
. to convert a B-spline curve into several Bezier curves
or surfaces.
All the geometric entities used in this package are bounded.
References :
. Generating the Bezier Points of B-spline curves and surfaces
(Wolfgang Bohm) CAGD volume 13 number 6 november 1981
. On NURBS: A Survey (Leslie Piegl) IEEE Computer Graphics and
Application January 1991
. Curve and surface construction using rational B-splines
(Leslie Piegl and Wayne Tiller) CAD Volume 19 number 9 november
1987
. A survey of curve and surface methods in CAGD (Wolfgang BOHM)
CAGD 1 1984

#include <Geom2dConvert.hxx>

Public Member Functions
void *	operator new (size_t, void *anAddress)
void *	operator new (size_t size)
void	operator delete (void *anAddress)
Static Public Member Functions
static Handle_Geom2d_BSplineCurve	SplitBSplineCurve (const Handle< Geom2d_BSplineCurve > &C, const Standard_Integer FromK1, const Standard_Integer ToK2, const Standard_Boolean SameOrientation=Standard_True)
	Raised if FromK1 = ToK2
static Handle_Geom2d_BSplineCurve	SplitBSplineCurve (const Handle< Geom2d_BSplineCurve > &C, const Standard_Real FromU1, const Standard_Real ToU2, const Standard_Real ParametricTolerance, const Standard_Boolean SameOrientation=Standard_True)
	Raised if FromU1 or ToU2 are out of the parametric bounds of the curve (The tolerance criterion is ParametricTolerance). Raised if Abs (FromU1 - ToU2) <= ParametricTolerance Raised if ParametricTolerance < Resolution from gp.
static Handle_Geom2d_BSplineCurve	CurveToBSplineCurve (const Handle< Geom2d_Curve > &C, const Convert_ParameterisationType Parameterisation=Convert_TgtThetaOver2)
static void	ConcatG1 (TColGeom2d_Array1OfBSplineCurve &ArrayOfCurves, const TColStd_Array1OfReal &ArrayOfToler, Handle< TColGeom2d_HArray1OfBSplineCurve > &ArrayOfConcatenated, const Standard_Boolean ClosedFlag, const Standard_Real ClosedTolerance)
	This Method concatenates G1 the ArrayOfCurves as far as it is possible. ArrayOfCurves[0..N-1] ArrayOfToler contains the biggest tolerance of the two points shared by two consecutives curves. Its dimension: [0..N-2] ClosedTolerance indicates if the ArrayOfCurves is closed. In this case ClosedTolerance contains the biggest tolerance of the two points which are at the closure. Otherwise its value is 0.0
static void	ConcatC1 (TColGeom2d_Array1OfBSplineCurve &ArrayOfCurves, const TColStd_Array1OfReal &ArrayOfToler, Handle< TColStd_HArray1OfInteger > &ArrayOfIndices, Handle< TColGeom2d_HArray1OfBSplineCurve > &ArrayOfConcatenated, const Standard_Boolean ClosedFlag, const Standard_Real ClosedTolerance)
	This Method concatenates C1 the ArrayOfCurves as far as it is possible. ArrayOfCurves[0..N-1] ArrayOfToler contains the biggest tolerance of the two points shared by two consecutives curves. Its dimension: [0..N-2] ClosedTolerance indicates if the ArrayOfCurves is closed. In this case ClosedTolerance contains the biggest tolerance of the two points which are at the closure. Otherwise its value is 0.0
static void	ConcatC1 (TColGeom2d_Array1OfBSplineCurve &ArrayOfCurves, const TColStd_Array1OfReal &ArrayOfToler, Handle< TColStd_HArray1OfInteger > &ArrayOfIndices, Handle< TColGeom2d_HArray1OfBSplineCurve > &ArrayOfConcatenated, const Standard_Boolean ClosedFlag, const Standard_Real ClosedTolerance, const Standard_Real AngularTolerance)
	This Method concatenates C1 the ArrayOfCurves as far as it is possible. ArrayOfCurves[0..N-1] ArrayOfToler contains the biggest tolerance of the two points shared by two consecutives curves. Its dimension: [0..N-2] ClosedTolerance indicates if the ArrayOfCurves is closed. In this case ClosedTolerance contains the biggest tolerance of the two points which are at the closure. Otherwise its value is 0.0
static void	C0BSplineToC1BSplineCurve (Handle< Geom2d_BSplineCurve > &BS, const Standard_Real Tolerance)
	This Method reduces as far as it is possible the multiplicities of the knots of the BSpline BS.(keeping the geometry). It returns a new BSpline which could still be C0. tolerance is a geometrical tolerance
static void	C0BSplineToArrayOfC1BSplineCurve (const Handle< Geom2d_BSplineCurve > &BS, Handle< TColGeom2d_HArray1OfBSplineCurve > &tabBS, const Standard_Real Tolerance)
	This Method reduces as far as it is possible the multiplicities of the knots of the BSpline BS.(keeping the geometry). It returns an array of BSpline C1. Tolerance is a geometrical tolerance
static void	C0BSplineToArrayOfC1BSplineCurve (const Handle< Geom2d_BSplineCurve > &BS, Handle< TColGeom2d_HArray1OfBSplineCurve > &tabBS, const Standard_Real AngularTolerance, const Standard_Real Tolerance)
	This Method reduces as far as it is possible the multiplicities of the knots of the BSpline BS.(keeping the geometry). It returns an array of BSpline C1. tolerance is a geometrical tolerance

Member Function Documentation

static void Geom2dConvert::C0BSplineToArrayOfC1BSplineCurve	(	const Handle< Geom2d_BSplineCurve > &	BS,
		Handle< TColGeom2d_HArray1OfBSplineCurve > &	tabBS,
		const Standard_Real	Tolerance
	)		`[static]`

static void Geom2dConvert::C0BSplineToArrayOfC1BSplineCurve	(	const Handle< Geom2d_BSplineCurve > &	BS,
		Handle< TColGeom2d_HArray1OfBSplineCurve > &	tabBS,
		const Standard_Real	AngularTolerance,
		const Standard_Real	Tolerance
	)		`[static]`

static void Geom2dConvert::C0BSplineToC1BSplineCurve	(	Handle< Geom2d_BSplineCurve > &	BS,
		const Standard_Real	Tolerance
	)		`[static]`

static void Geom2dConvert::ConcatC1	(	TColGeom2d_Array1OfBSplineCurve &	ArrayOfCurves,
		const TColStd_Array1OfReal &	ArrayOfToler,
		Handle< TColStd_HArray1OfInteger > &	ArrayOfIndices,
		Handle< TColGeom2d_HArray1OfBSplineCurve > &	ArrayOfConcatenated,
		const Standard_Boolean	ClosedFlag,
		const Standard_Real	ClosedTolerance,
		const Standard_Real	AngularTolerance
	)		`[static]`

static void Geom2dConvert::ConcatC1	(	TColGeom2d_Array1OfBSplineCurve &	ArrayOfCurves,
		const TColStd_Array1OfReal &	ArrayOfToler,
		Handle< TColStd_HArray1OfInteger > &	ArrayOfIndices,
		Handle< TColGeom2d_HArray1OfBSplineCurve > &	ArrayOfConcatenated,
		const Standard_Boolean	ClosedFlag,
		const Standard_Real	ClosedTolerance
	)		`[static]`

static void Geom2dConvert::ConcatG1	(	TColGeom2d_Array1OfBSplineCurve &	ArrayOfCurves,
		const TColStd_Array1OfReal &	ArrayOfToler,
		Handle< TColGeom2d_HArray1OfBSplineCurve > &	ArrayOfConcatenated,
		const Standard_Boolean	ClosedFlag,
		const Standard_Real	ClosedTolerance
	)		`[static]`

static Handle_Geom2d_BSplineCurve Geom2dConvert::CurveToBSplineCurve	(	const Handle< Geom2d_Curve > &	C,
		const Convert_ParameterisationType	Parameterisation = `Convert_TgtThetaOver2`
	)		`[static]`

void Geom2dConvert::operator delete ( void * anAddress ) [inline]

void* Geom2dConvert::operator new ( size_t size ) [inline]

void* Geom2dConvert::operator new	(	size_t	,
		void *	anAddress
	)		`[inline]`

static Handle_Geom2d_BSplineCurve Geom2dConvert::SplitBSplineCurve	(	const Handle< Geom2d_BSplineCurve > &	C,
		const Standard_Integer	FromK1,
		const Standard_Integer	ToK2,
		const Standard_Boolean	SameOrientation = `Standard_True`
	)		`[static]`

static Handle_Geom2d_BSplineCurve Geom2dConvert::SplitBSplineCurve	(	const Handle< Geom2d_BSplineCurve > &	C,
		const Standard_Real	FromU1,
		const Standard_Real	ToU2,
		const Standard_Real	ParametricTolerance,
		const Standard_Boolean	SameOrientation = `Standard_True`
	)		`[static]`

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

Geom2dConvert.hxx

Public Member Functions

Static Public Member Functions

Member Function Documentation