defined the function used by SweepApproximation to
perform sweeping application.
More...

#include <Approx_SweepFunction.hxx>

Inheritance diagram for Approx_SweepFunction:

[legend]

Public Member Functions
virtual Standard_Boolean	D0 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfPnt2d &Poles2d, TColStd_Array1OfReal &Weigths)=0
	compute the section for v = param More...

virtual Standard_Boolean	D1 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfVec &DPoles, TColgp_Array1OfPnt2d &Poles2d, TColgp_Array1OfVec2d &DPoles2d, TColStd_Array1OfReal &Weigths, TColStd_Array1OfReal &DWeigths)
	compute the first derivative in v direction of the <br> section for v = param <br> Warning : It used only for C1 or C2 aproximation More...

virtual Standard_Boolean	D2 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfVec &DPoles, TColgp_Array1OfVec &D2Poles, TColgp_Array1OfPnt2d &Poles2d, TColgp_Array1OfVec2d &DPoles2d, TColgp_Array1OfVec2d &D2Poles2d, TColStd_Array1OfReal &Weigths, TColStd_Array1OfReal &DWeigths, TColStd_Array1OfReal &D2Weigths)
	compute the second derivative in v direction of the <br> section for v = param <br> Warning : It used only for C2 aproximation More...

virtual Standard_Integer	Nb2dCurves () const =0
	get the number of 2d curves to approximate. More...

virtual void	SectionShape (Standard_Integer &NbPoles, Standard_Integer &NbKnots, Standard_Integer &Degree) const =0
	get the format of an section More...

virtual void	Knots (TColStd_Array1OfReal &TKnots) const =0
	get the Knots of the section More...

virtual void	Mults (TColStd_Array1OfInteger &TMults) const =0
	get the Multplicities of the section More...

virtual Standard_Boolean	IsRational () const =0
	Returns if the sections are rationnal or not More...

virtual Standard_Integer	NbIntervals (const GeomAbs_Shape S) const =0
	Returns the number of intervals for continuity <S>. May be one if Continuity(me) >= <S> More...

virtual void	Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const =0
	Stores in <T> the parameters bounding the intervals <br> of continuity <S>. <br> The array must provide enough room to accomodate for the parameters. i.e. T.Length() > NbIntervals() More...

virtual void	SetInterval (const Standard_Real First, const Standard_Real Last)=0
	Sets the bounds of the parametric interval on the fonction This determines the derivatives in these values if the function is not Cn. More...

virtual void	Resolution (const Standard_Integer Index, const Standard_Real Tol, Standard_Real &TolU, Standard_Real &TolV) const
	Returns the resolutions in the sub-space 2d <Index> This information is usfull to find an good tolerance in 2d approximation. More...

virtual void	GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal &Tol3d) const =0
	Returns the tolerance to reach in approximation to satisfy. BoundTol error at the Boundary AngleTol tangent error at the Boundary (in radian) SurfTol error inside the surface. More...

virtual void	SetTolerance (const Standard_Real Tol3d, const Standard_Real Tol2d)=0
	Is usefull, if (me) have to run numerical algorithm to perform D0, D1 or D2 More...

virtual gp_Pnt	BarycentreOfSurf () const
	Get the barycentre of Surface. <br> An very poor estimation is sufficent. <br> This information is usefull to perform well <br> conditioned rational approximation. <br> Warning: Used only if <me> IsRational More...

virtual Standard_Real	MaximalSection () const
	Returns the length of the greater section. This <br> information is usefull to G1's control. <br> Warning: With an little value, approximation can be slower. More...

virtual void	GetMinimalWeight (TColStd_Array1OfReal &Weigths) const
	Compute the minimal value of weight for each poles <br> in all sections. <br> This information is usefull to control error <br> in rational approximation. <br> Warning: Used only if <me> IsRational More...

Public Member Functions inherited from MMgt_TShared
virtual void	Delete () const
	Memory deallocator for transient classes. More...

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

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

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

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

virtual void	ShallowDump (Standard_OStream &) const

virtual const Handle_Standard_Type &	DynamicType () const
	Returns a type information object about this object. More...

Standard_Boolean	IsInstance (const 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 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...

virtual Handle_Standard_Transient	This () const
	Returns a Handle which references this object. Must never be called to objects created in stack. More...

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

Detailed Description

defined the function used by SweepApproximation to
perform sweeping application.

Member Function Documentation

virtual gp_Pnt Approx_SweepFunction::BarycentreOfSurf ( ) const

virtual

 Get the barycentre of Surface. <br>
    An   very  poor estimation is sufficent. <br>
    This information is usefull to perform well <br>
    conditioned rational approximation. <br>

Warning: Used only if <me> IsRational

Reimplemented in GeomFill_SweepFunction, BRepBlend_AppFuncRoot, and GeomFill_CircularBlendFunc.

virtual Standard_Boolean Approx_SweepFunction::D0	(	const Standard_Real	Param,
		const Standard_Real	First,
		const Standard_Real	Last,
		TColgp_Array1OfPnt &	Poles,
		TColgp_Array1OfPnt2d &	Poles2d,
		TColStd_Array1OfReal &	Weigths
	)

pure virtual

compute the section for v = param

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual Standard_Boolean Approx_SweepFunction::D1	(	const Standard_Real	Param,
		const Standard_Real	First,
		const Standard_Real	Last,
		TColgp_Array1OfPnt &	Poles,
		TColgp_Array1OfVec &	DPoles,
		TColgp_Array1OfPnt2d &	Poles2d,
		TColgp_Array1OfVec2d &	DPoles2d,
		TColStd_Array1OfReal &	Weigths,
		TColStd_Array1OfReal &	DWeigths
	)

virtual

compute the first  derivative in v direction  of the <br>
     section for v =  param <br>

Warning : It used only for C1 or C2 aproximation

Reimplemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual Standard_Boolean Approx_SweepFunction::D2	(	const Standard_Real	Param,
		const Standard_Real	First,
		const Standard_Real	Last,
		TColgp_Array1OfPnt &	Poles,
		TColgp_Array1OfVec &	DPoles,
		TColgp_Array1OfVec &	D2Poles,
		TColgp_Array1OfPnt2d &	Poles2d,
		TColgp_Array1OfVec2d &	DPoles2d,
		TColgp_Array1OfVec2d &	D2Poles2d,
		TColStd_Array1OfReal &	Weigths,
		TColStd_Array1OfReal &	DWeigths,
		TColStd_Array1OfReal &	D2Weigths
	)

virtual

compute the second derivative  in v direction of the <br>
    section  for v = param <br>

Warning : It used only for C2 aproximation

Reimplemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual void Approx_SweepFunction::GetMinimalWeight ( TColStd_Array1OfReal & Weigths ) const

virtual

Compute the minimal value of weight for each poles <br>
    in all  sections. <br>
    This information is  usefull to control error <br>
    in rational approximation. <br>

Warning: Used only if <me> IsRational

Reimplemented in GeomFill_SweepFunction, BRepBlend_AppFuncRoot, and GeomFill_CircularBlendFunc.

virtual void Approx_SweepFunction::GetTolerance	(	const Standard_Real	BoundTol,
		const Standard_Real	SurfTol,
		const Standard_Real	AngleTol,
		TColStd_Array1OfReal &	Tol3d
	)		const

pure virtual

Returns the tolerance to reach in approximation
to satisfy.
BoundTol error at the Boundary
AngleTol tangent error at the Boundary (in radian)
SurfTol error inside the surface.

Implemented in BRepBlend_AppFuncRoot, GeomFill_SweepFunction, and GeomFill_CircularBlendFunc.

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

pure virtual

 Stores in <T> the  parameters bounding the intervals <br>
     of continuity <S>. <br>

The array must provide enough room to accomodate
for the parameters. i.e. T.Length() > NbIntervals()

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual Standard_Boolean Approx_SweepFunction::IsRational ( ) const

pure virtual

Returns if the sections are rationnal or not

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual void Approx_SweepFunction::Knots ( TColStd_Array1OfReal & TKnots ) const

pure virtual

get the Knots of the section

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual Standard_Real Approx_SweepFunction::MaximalSection ( ) const

virtual

Returns the   length of the greater section. This <br>
    information is usefull to G1's control. <br>

Warning: With an little value, approximation can be slower.

Reimplemented in GeomFill_SweepFunction, BRepBlend_AppFuncRoot, and GeomFill_CircularBlendFunc.

virtual void Approx_SweepFunction::Mults ( TColStd_Array1OfInteger & TMults ) const

pure virtual

get the Multplicities of the section

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual Standard_Integer Approx_SweepFunction::Nb2dCurves ( ) const

pure virtual

get the number of 2d curves to approximate.

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

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

pure virtual

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

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual void Approx_SweepFunction::Resolution	(	const Standard_Integer	Index,
		const Standard_Real	Tol,
		Standard_Real &	TolU,
		Standard_Real &	TolV
	)		const

virtual

Returns the resolutions in the sub-space 2d <Index>
This information is usfull to find an good tolerance in
2d approximation.

Reimplemented in BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual void Approx_SweepFunction::SectionShape	(	Standard_Integer &	NbPoles,
		Standard_Integer &	NbKnots,
		Standard_Integer &	Degree
	)		const

pure virtual

get the format of an section

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual void Approx_SweepFunction::SetInterval	(	const Standard_Real	First,
		const Standard_Real	Last
	)

pure virtual

Sets the bounds of the parametric interval on
the fonction
This determines the derivatives in these values if the
function is not Cn.

Implemented in GeomFill_CircularBlendFunc, BRepBlend_AppFuncRoot, and GeomFill_SweepFunction.

virtual void Approx_SweepFunction::SetTolerance	(	const Standard_Real	Tol3d,
		const Standard_Real	Tol2d
	)

pure virtual

Is usefull, if (me) have to run numerical
algorithm to perform D0, D1 or D2

Implemented in BRepBlend_AppFuncRoot, GeomFill_SweepFunction, and GeomFill_CircularBlendFunc.

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

Approx_SweepFunction.hxx

Public Member Functions

Detailed Description

Member Function Documentation