GeomConvert Class Reference

The GeomConvert package provides some global functions as follows
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#include <GeomConvert.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_Geom_BSplineCurve	SplitBSplineCurve (const Handle< Geom_BSplineCurve > &C, const Standard_Integer FromK1, const Standard_Integer ToK2, const Standard_Boolean SameOrientation=Standard_True)
	Raised if FromK1 = ToK2 Raised if FromK1 or ToK2 are out of the bounds [FirstUKnotIndex, LastUKnotIndex]
static Handle_Geom_BSplineCurve	SplitBSplineCurve (const Handle< Geom_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_Geom_BSplineSurface	SplitBSplineSurface (const Handle< Geom_BSplineSurface > &S, const Standard_Integer FromUK1, const Standard_Integer ToUK2, const Standard_Integer FromVK1, const Standard_Integer ToVK2, const Standard_Boolean SameUOrientation=Standard_True, const Standard_Boolean SameVOrientation=Standard_True)
	Raised if FromUK1 = ToUK2 or FromVK1 = ToVK2 FromUK1 or ToUK2 are out of the bounds [FirstUKnotIndex, LastUKnotIndex] FromVK1 or ToVK2 are out of the bounds [FirstVKnotIndex, LastVKnotIndex]
static Handle_Geom_BSplineSurface	SplitBSplineSurface (const Handle< Geom_BSplineSurface > &S, const Standard_Integer FromK1, const Standard_Integer ToK2, const Standard_Boolean USplit, const Standard_Boolean SameOrientation=Standard_True)
	Raised if FromK1 = ToK2 or if FromK1 or ToK2 are out of the bounds [FirstUKnotIndex, LastUKnotIndex] in the considered parametric direction.
static Handle_Geom_BSplineSurface	SplitBSplineSurface (const Handle< Geom_BSplineSurface > &S, const Standard_Real FromU1, const Standard_Real ToU2, const Standard_Real FromV1, const Standard_Real ToV2, const Standard_Real ParametricTolerance, const Standard_Boolean SameUOrientation=Standard_True, const Standard_Boolean SameVOrientation=Standard_True)
	Raised if FromU1 or ToU2 or FromV1 or ToU2 are out of the parametric bounds of the surface (the tolerance criterion is ParametricTolerance). Raised if Abs (FromU1 - ToU2) <= ParametricTolerance or Abs (FromV1 - ToV2) <= ParametricTolerance. Raised if ParametricTolerance < Resolution.
static Handle_Geom_BSplineSurface	SplitBSplineSurface (const Handle< Geom_BSplineSurface > &S, const Standard_Real FromParam1, const Standard_Real ToParam2, const Standard_Boolean USplit, const Standard_Real ParametricTolerance, const Standard_Boolean SameOrientation=Standard_True)
	Raises if FromParam1 or ToParam2 are out of the parametric bounds of the surface in the considered direction. Raises if Abs (FromParam1 - ToParam2) <= ParametricTolerance.
static Handle_Geom_BSplineCurve	CurveToBSplineCurve (const Handle< Geom_Curve > &C, const Convert_ParameterisationType Parameterisation=Convert_TgtThetaOver2)
static Handle_Geom_BSplineSurface	SurfaceToBSplineSurface (const Handle< Geom_Surface > &S)
static void	ConcatG1 (TColGeom_Array1OfBSplineCurve &ArrayOfCurves, const TColStd_Array1OfReal &ArrayOfToler, Handle< TColGeom_HArray1OfBSplineCurve > &ArrayOfConcatenated, const Standard_Boolean ClosedG1Flag, 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] ClosedG1 indicates if the ArrayOfCurves is closed. In this case ClosedG1 contains the biggest tolerance of the two points which are at the closure. Otherwise its value is 0.0
static void	ConcatC1 (TColGeom_Array1OfBSplineCurve &ArrayOfCurves, const TColStd_Array1OfReal &ArrayOfToler, Handle< TColStd_HArray1OfInteger > &ArrayOfIndices, Handle< TColGeom_HArray1OfBSplineCurve > &ArrayOfConcatenated, const Standard_Boolean ClosedG1Flag, 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] ClosedG1 indicates if the ArrayOfCurves is closed. In this case ClosedG1 contains the biggest tolerance of the two points which are at the closure. Otherwise its value is 0.0
static void	ConcatC1 (TColGeom_Array1OfBSplineCurve &ArrayOfCurves, const TColStd_Array1OfReal &ArrayOfToler, Handle< TColStd_HArray1OfInteger > &ArrayOfIndices, Handle< TColGeom_HArray1OfBSplineCurve > &ArrayOfConcatenated, const Standard_Boolean ClosedG1Flag, 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] ClosedG1 indicates if the ArrayOfCurves is closed. In this case ClosedG1 contains the biggest tolerance of the two points which are at the closure. Otherwise its value is 0.0
static void	C0BSplineToC1BSplineCurve (Handle< Geom_BSplineCurve > &BS, const Standard_Real tolerance, const Standard_Real AngularTolerance=1.0e-7)
	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. The Angular toleranceis in radians and mesures the angle of the tangents on the left and on the right to decide if the curve is G1 or not at a given point
static void	C0BSplineToArrayOfC1BSplineCurve (const Handle< Geom_BSplineCurve > &BS, Handle< TColGeom_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< Geom_BSplineCurve > &BS, Handle< TColGeom_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 : it allows for the maximum deformation The Angular tolerance is in radians and mesures the angle of the tangents on the left and on the right to decide if the curve is C1 or not at a given point

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Detailed Description

• converting classical Geom curves into BSpline curves,
  
• segmenting BSpline curves, particularly at knots
  values: this function may be used in conjunction with the
  GeomConvert_BSplineCurveKnotSplitting
  class to segment a BSpline curve into arcs which
  comply with required continuity levels,
  
• converting classical Geom surfaces into BSpline surfaces, and
  
• segmenting BSpline surfaces, particularly at
  knots values: this function may be used in conjunction with the
  GeomConvert_BSplineSurfaceKnotSplitting
  class to segment a BSpline surface into patches
  which comply with required continuity levels.
  All 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
  

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Member Function Documentation

static void GeomConvert::C0BSplineToArrayOfC1BSplineCurve	(	const Handle< Geom_BSplineCurve > &	BS,
		Handle< TColGeom_HArray1OfBSplineCurve > &	tabBS,
		const Standard_Real	tolerance
	)		[static]

static void GeomConvert::C0BSplineToArrayOfC1BSplineCurve	(	const Handle< Geom_BSplineCurve > &	BS,
		Handle< TColGeom_HArray1OfBSplineCurve > &	tabBS,
		const Standard_Real	AngularTolerance,
		const Standard_Real	tolerance
	)		[static]

static void GeomConvert::C0BSplineToC1BSplineCurve	(	Handle< Geom_BSplineCurve > &	BS,
		const Standard_Real	tolerance,
		const Standard_Real	AngularTolerance = 1.0e-7
	)		[static]

static void GeomConvert::ConcatC1	(	TColGeom_Array1OfBSplineCurve &	ArrayOfCurves,
		const TColStd_Array1OfReal &	ArrayOfToler,
		Handle< TColStd_HArray1OfInteger > &	ArrayOfIndices,
		Handle< TColGeom_HArray1OfBSplineCurve > &	ArrayOfConcatenated,
		const Standard_Boolean	ClosedG1Flag,
		const Standard_Real	ClosedTolerance
	)		[static]

static void GeomConvert::ConcatC1	(	TColGeom_Array1OfBSplineCurve &	ArrayOfCurves,
		const TColStd_Array1OfReal &	ArrayOfToler,
		Handle< TColStd_HArray1OfInteger > &	ArrayOfIndices,
		Handle< TColGeom_HArray1OfBSplineCurve > &	ArrayOfConcatenated,
		const Standard_Boolean	ClosedG1Flag,
		const Standard_Real	ClosedTolerance,
		const Standard_Real	AngularTolerance
	)		[static]

static void GeomConvert::ConcatG1	(	TColGeom_Array1OfBSplineCurve &	ArrayOfCurves,
		const TColStd_Array1OfReal &	ArrayOfToler,
		Handle< TColGeom_HArray1OfBSplineCurve > &	ArrayOfConcatenated,
		const Standard_Boolean	ClosedG1Flag,
		const Standard_Real	ClosedTolerance
	)		[static]

static Handle_Geom_BSplineCurve GeomConvert::CurveToBSplineCurve	(	const Handle< Geom_Curve > &	C,
		const Convert_ParameterisationType	Parameterisation = Convert_TgtThetaOver2
	)		[static]

void GeomConvert::operator delete

(

void *

anAddress

)

[inline]

void* GeomConvert::operator new

(

size_t

size

)

[inline]

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

static Handle_Geom_BSplineCurve GeomConvert::SplitBSplineCurve	(	const Handle< Geom_BSplineCurve > &	C,
		const Standard_Integer	FromK1,
		const Standard_Integer	ToK2,
		const Standard_Boolean	SameOrientation = Standard_True
	)		[static]

static Handle_Geom_BSplineCurve GeomConvert::SplitBSplineCurve	(	const Handle< Geom_BSplineCurve > &	C,
		const Standard_Real	FromU1,
		const Standard_Real	ToU2,
		const Standard_Real	ParametricTolerance,
		const Standard_Boolean	SameOrientation = Standard_True
	)		[static]

static Handle_Geom_BSplineSurface GeomConvert::SplitBSplineSurface	(	const Handle< Geom_BSplineSurface > &	S,
		const Standard_Integer	FromUK1,
		const Standard_Integer	ToUK2,
		const Standard_Integer	FromVK1,
		const Standard_Integer	ToVK2,
		const Standard_Boolean	SameUOrientation = Standard_True,
		const Standard_Boolean	SameVOrientation = Standard_True
	)		[static]

static Handle_Geom_BSplineSurface GeomConvert::SplitBSplineSurface	(	const Handle< Geom_BSplineSurface > &	S,
		const Standard_Integer	FromK1,
		const Standard_Integer	ToK2,
		const Standard_Boolean	USplit,
		const Standard_Boolean	SameOrientation = Standard_True
	)		[static]

static Handle_Geom_BSplineSurface GeomConvert::SplitBSplineSurface	(	const Handle< Geom_BSplineSurface > &	S,
		const Standard_Real	FromU1,
		const Standard_Real	ToU2,
		const Standard_Real	FromV1,
		const Standard_Real	ToV2,
		const Standard_Real	ParametricTolerance,
		const Standard_Boolean	SameUOrientation = Standard_True,
		const Standard_Boolean	SameVOrientation = Standard_True
	)		[static]

static Handle_Geom_BSplineSurface GeomConvert::SplitBSplineSurface	(	const Handle< Geom_BSplineSurface > &	S,
		const Standard_Real	FromParam1,
		const Standard_Real	ToParam2,
		const Standard_Boolean	USplit,
		const Standard_Real	ParametricTolerance,
		const Standard_Boolean	SameOrientation = Standard_True
	)		[static]

static Handle_Geom_BSplineSurface GeomConvert::SurfaceToBSplineSurface

(

const Handle< Geom_Surface > &

S

)

[static]

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

• GeomConvert.hxx