Convert_ElementarySurfaceToBSplineSurface Class Reference

Root class for algorithms which convert an elementary
surface (cylinder, cone, sphere or torus) into a BSpline
surface (CylinderToBSplineSurface, ConeToBSplineSurface,
SphereToBSplineSurface, TorusToBSplineSurface).
These algorithms all work on elementary surfaces from
the gp package and compute all the data needed to
construct a BSpline surface equivalent to the cylinder,
cone, sphere or torus. This data consists of the following:
More...

#include <Convert_ElementarySurfaceToBSplineSurface.hxx>

Inheritance diagram for Convert_ElementarySurfaceToBSplineSurface:

Public Member Functions
Standard_Integer	UDegree () const
Standard_Integer	VDegree () const
	Returns the degree for the u or v parametric direction of <br> the BSpline surface whose data is computed in this framework. More...
Standard_Integer	NbUPoles () const
Standard_Integer	NbVPoles () const
	Returns the number of poles for the u or v parametric <br> direction of the BSpline surface whose data is computed in this framework. More...
Standard_Integer	NbUKnots () const
Standard_Integer	NbVKnots () const
	Returns the number of knots for the u or v parametric <br> direction of the BSpline surface whose data is computed in this framework . More...
Standard_Boolean	IsUPeriodic () const
Standard_Boolean	IsVPeriodic () const
	Returns true if the BSpline surface whose data is computed <br> in this framework is periodic in the u or v parametric direction. More...
gp_Pnt	Pole (const Standard_Integer UIndex, const Standard_Integer VIndex) const
	Returns the pole of index (UIndex,VIndex) to the poles <br> table of the BSpline surface whose data is computed in this framework. Exceptions Standard_OutOfRange if, for the BSpline surface whose data is computed in this framework: More...
Standard_Real	Weight (const Standard_Integer UIndex, const Standard_Integer VIndex) const
	Returns the weight of the pole of index (UIndex,VIndex) to <br> the poles table of the BSpline surface whose data is computed in this framework. Exceptions Standard_OutOfRange if, for the BSpline surface whose data is computed in this framework: More...
Standard_Real	UKnot (const Standard_Integer UIndex) const
	Returns the U-knot of range UIndex. //! Raised if UIndex < 1 or UIndex > NbUKnots. More...
Standard_Real	VKnot (const Standard_Integer UIndex) const
	Returns the V-knot of range VIndex. //! Raised if VIndex < 1 or VIndex > NbVKnots. More...
Standard_Integer	UMultiplicity (const Standard_Integer UIndex) const
	Returns the multiplicity of the U-knot of range UIndex. //! Raised if UIndex < 1 or UIndex > NbUKnots. More...
Standard_Integer	VMultiplicity (const Standard_Integer VIndex) const
	Returns the multiplicity of the V-knot of range VIndex. //! Raised if VIndex < 1 or VIndex > NbVKnots. More...

Protected Member Functions
	Convert_ElementarySurfaceToBSplineSurface (const Standard_Integer NumberOfUPoles, const Standard_Integer NumberOfVPoles, const Standard_Integer NumberOfUKnots, const Standard_Integer NumberOfVKnots, const Standard_Integer UDegree, const Standard_Integer VDegree)

Protected Attributes
TColgp_Array2OfPnt	poles
TColStd_Array2OfReal	weights
TColStd_Array1OfReal	uknots
TColStd_Array1OfInteger	umults
TColStd_Array1OfReal	vknots
TColStd_Array1OfInteger	vmults
Standard_Integer	udegree
Standard_Integer	vdegree
Standard_Integer	nbUPoles
Standard_Integer	nbVPoles
Standard_Integer	nbUKnots
Standard_Integer	nbVKnots
Standard_Boolean	isuperiodic
Standard_Boolean	isvperiodic

Detailed Description

Root class for algorithms which convert an elementary
surface (cylinder, cone, sphere or torus) into a BSpline
surface (CylinderToBSplineSurface, ConeToBSplineSurface,
SphereToBSplineSurface, TorusToBSplineSurface).
These algorithms all work on elementary surfaces from
the gp package and compute all the data needed to
construct a BSpline surface equivalent to the cylinder,
cone, sphere or torus. This data consists of the following:

• degrees in the u and v parametric directions,
  
• periodic characteristics in the u and v parametric directions,
  
• a poles table with associated weights,
  
• a knots table (for the u and v parametric directions)
  with associated multiplicities.
  The abstract class
  ElementarySurfaceToBSplineSurface provides a
  framework for storing and consulting this computed data.
  This data may then be used to construct a
  Geom_BSplineSurface surface, for example.
  All those classes define algorithmes to convert an
  ElementarySurface into a B-spline surface.
  This abstract class implements the methods to get
  the geometric representation of the B-spline surface.
  The B-spline representation is computed at the creation
  time in the sub classes.
  The B-spline surface is defined with its degree in the
  parametric U and V directions, its control points (Poles),
  its weights, its knots and their multiplicity.
  KeyWords :
  Convert, ElementarySurface, BSplineSurface.
  

Constructor & Destructor Documentation

Convert_ElementarySurfaceToBSplineSurface::Convert_ElementarySurfaceToBSplineSurface ( const Standard_Integer  NumberOfUPoles, const Standard_Integer  NumberOfVPoles, const Standard_Integer  NumberOfUKnots, const Standard_Integer  NumberOfVKnots, const Standard_Integer  UDegree, const Standard_Integer  VDegree  )

protected

Member Function Documentation

Standard_Boolean Convert_ElementarySurfaceToBSplineSurface::IsUPeriodic

(

)

const

Standard_Boolean Convert_ElementarySurfaceToBSplineSurface::IsVPeriodic

(

)

const

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

in this framework is periodic in the u or v parametric direction.

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::NbUKnots

(

)

const

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::NbUPoles

(

)

const

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::NbVKnots

(

)

const

 Returns the number of knots for the u or v parametric <br>

direction of the BSpline surface whose data is computed in this framework .

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::NbVPoles

(

)

const

 Returns the number of poles for the u or v parametric <br>

direction of the BSpline surface whose data is computed in this framework.

gp_Pnt Convert_ElementarySurfaceToBSplineSurface::Pole	(	const Standard_Integer	UIndex,
		const Standard_Integer	VIndex
	)		const

  Returns the pole of index (UIndex,VIndex) to the poles <br>

table of the BSpline surface whose data is computed in this framework.
Exceptions
Standard_OutOfRange if, for the BSpline surface whose
data is computed in this framework:

• UIndex is outside the bounds of the poles table in the u
  parametric direction, or
  
• VIndex is outside the bounds of the poles table in the v
  parametric direction.
  

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::UDegree

(

)

const

Standard_Real Convert_ElementarySurfaceToBSplineSurface::UKnot

(

const Standard_Integer

UIndex

)

const

Returns the U-knot of range UIndex.
//! Raised if UIndex < 1 or UIndex > NbUKnots.

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::UMultiplicity

(

const Standard_Integer

UIndex

)

const

Returns the multiplicity of the U-knot of range UIndex.
//! Raised if UIndex < 1 or UIndex > NbUKnots.

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::VDegree

(

)

const

 Returns the degree for the u or v parametric direction of <br>

the BSpline surface whose data is computed in this framework.

Standard_Real Convert_ElementarySurfaceToBSplineSurface::VKnot

(

const Standard_Integer

UIndex

)

const

Returns the V-knot of range VIndex.
//! Raised if VIndex < 1 or VIndex > NbVKnots.

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::VMultiplicity

(

const Standard_Integer

VIndex

)

const

Returns the multiplicity of the V-knot of range VIndex.
//! Raised if VIndex < 1 or VIndex > NbVKnots.

Standard_Real Convert_ElementarySurfaceToBSplineSurface::Weight	(	const Standard_Integer	UIndex,
		const Standard_Integer	VIndex
	)		const

  Returns the weight of the pole of index (UIndex,VIndex) to <br>

the poles table of the BSpline surface whose data is computed in this framework.
Exceptions
Standard_OutOfRange if, for the BSpline surface whose
data is computed in this framework:

• UIndex is outside the bounds of the poles table in the u
  parametric direction, or
  
• VIndex is outside the bounds of the poles table in the v
  parametric direction.
  

Field Documentation

Standard_Boolean Convert_ElementarySurfaceToBSplineSurface::isuperiodic

protected

Standard_Boolean Convert_ElementarySurfaceToBSplineSurface::isvperiodic

protected

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::nbUKnots

protected

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::nbUPoles

protected

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::nbVKnots

protected

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::nbVPoles

protected

TColgp_Array2OfPnt Convert_ElementarySurfaceToBSplineSurface::poles

protected

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::udegree

protected

TColStd_Array1OfReal Convert_ElementarySurfaceToBSplineSurface::uknots

protected

TColStd_Array1OfInteger Convert_ElementarySurfaceToBSplineSurface::umults

protected

Standard_Integer Convert_ElementarySurfaceToBSplineSurface::vdegree

protected

TColStd_Array1OfReal Convert_ElementarySurfaceToBSplineSurface::vknots

protected

TColStd_Array1OfInteger Convert_ElementarySurfaceToBSplineSurface::vmults

protected

TColStd_Array2OfReal Convert_ElementarySurfaceToBSplineSurface::weights

protected

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

• Convert_ElementarySurfaceToBSplineSurface.hxx