Convert_SphereToBSplineSurface Class Reference

This algorithm converts a bounded Sphere into a rational B-spline surface. The sphere is a Sphere from package gp. The parametrization of the sphere is: P (U, V) = Loc + Radius * std::sin(V) * Zdir + Radius * std::cos(V) * (std::cos(U)*Xdir + std::sin(U)*Ydir) where Loc is the center of the sphere Xdir, Ydir and Zdir are the normalized directions of the local cartesian coordinate system of the sphere. The parametrization range is U [0, 2PI] and V [-PI/2, PI/2]. KeyWords : Convert, Sphere, BSplineSurface. More...

#include <Convert_SphereToBSplineSurface.hxx>

Inheritance diagram for Convert_SphereToBSplineSurface:

Public Member Functions
	Convert_SphereToBSplineSurface (const gp_Sphere &Sph, const double U1, const double U2, const double V1, const double V2)
	The equivalent B-spline surface as the same orientation as the sphere in the U and V parametric directions.
	Convert_SphereToBSplineSurface (const gp_Sphere &Sph, const double Param1, const double Param2, const bool UTrim=true)
	The equivalent B-spline surface as the same orientation as the sphere in the U and V parametric directions.
	Convert_SphereToBSplineSurface (const gp_Sphere &Sph)
	The equivalent B-spline surface as the same orientation as the sphere in the U and V parametric directions.
Public Member Functions inherited from Convert_ElementarySurfaceToBSplineSurface
int	UDegree () const
	Returns the degree in the U parametric direction.
int	VDegree () const
	Returns the degree in the V parametric direction.
int	NbUPoles () const
	Returns the number of poles in the U parametric direction.
int	NbVPoles () const
	Returns the number of poles in the V parametric direction.
int	NbUKnots () const
	Returns the number of knots in the U parametric direction.
int	NbVKnots () const
	Returns the number of knots in the V parametric direction.
bool	IsUPeriodic () const
	Returns true if the surface is periodic in the U parametric direction.
bool	IsVPeriodic () const
	Returns true if the surface is periodic in the V parametric direction.
gp_Pnt	Pole (const int UIndex, const int VIndex) const
	Returns the pole of index (UIndex, VIndex).
double	Weight (const int UIndex, const int VIndex) const
	Returns the weight of the pole of index (UIndex, VIndex).
double	UKnot (const int UIndex) const
	Returns the U-knot of range UIndex.
double	VKnot (const int VIndex) const
	Returns the V-knot of range VIndex.
int	UMultiplicity (const int UIndex) const
	Returns the multiplicity of the U-knot of range UIndex.
int	VMultiplicity (const int VIndex) const
	Returns the multiplicity of the V-knot of range VIndex.
const NCollection_Array2< gp_Pnt > &	Poles () const
	Returns the poles of the BSpline surface.
const NCollection_Array2< double > &	Weights () const
	Returns the weights of the BSpline surface.
const NCollection_Array1< double > &	UKnots () const
	Returns the U-knots of the BSpline surface.
const NCollection_Array1< double > &	VKnots () const
	Returns the V-knots of the BSpline surface.
const NCollection_Array1< int > &	UMultiplicities () const
	Returns the U-multiplicities of the BSpline surface.
const NCollection_Array1< int > &	VMultiplicities () const
	Returns the V-multiplicities of the BSpline surface.

Additional Inherited Members
Protected Member Functions inherited from Convert_ElementarySurfaceToBSplineSurface
	Convert_ElementarySurfaceToBSplineSurface (const int theNbUPoles, const int theNbVPoles, const int theNbUKnots, const int theNbVKnots, const int theUDegree, const int theVDegree)
void	Finalize ()
	Resizes internal arrays (poles, weights, knots, multiplicities) to match the actual sizes stored in myNbUPoles, myNbVPoles, myNbUKnots, and myNbVKnots. This is intended to be called at the end of derived class constructors when the base class constructor allocates arrays with maximum possible sizes but the derived constructor uses fewer elements.
Protected Attributes inherited from Convert_ElementarySurfaceToBSplineSurface
NCollection_Array2< gp_Pnt >	myPoles
NCollection_Array2< double >	myWeights
NCollection_Array1< double >	myUKnots
NCollection_Array1< double >	myVKnots
NCollection_Array1< int >	myUMults
NCollection_Array1< int >	myVMults
int	myUDegree = 0
int	myVDegree = 0
bool	myIsUPeriodic = false
bool	myIsVPeriodic = false
int	myNbUPoles
int	myNbVPoles
int	myNbUKnots
int	myNbVKnots

Detailed Description

This algorithm converts a bounded Sphere into a rational B-spline surface. The sphere is a Sphere from package gp. The parametrization of the sphere is: P (U, V) = Loc + Radius * std::sin(V) * Zdir + Radius * std::cos(V) * (std::cos(U)*Xdir + std::sin(U)*Ydir) where Loc is the center of the sphere Xdir, Ydir and Zdir are the normalized directions of the local cartesian coordinate system of the sphere. The parametrization range is U [0, 2PI] and V [-PI/2, PI/2]. KeyWords : Convert, Sphere, BSplineSurface.

Constructor & Destructor Documentation

Convert_SphereToBSplineSurface() [1/3]

Convert_SphereToBSplineSurface::Convert_SphereToBSplineSurface	(	const gp_Sphere &	Sph,
		const double	U1,
		const double	U2,
		const double	V1,
		const double	V2 )

The equivalent B-spline surface as the same orientation as the sphere in the U and V parametric directions.

Raised if U1 = U2 or U1 = U2 + 2.0 * Pi Raised if V1 = V2.

Convert_SphereToBSplineSurface() [2/3]

Convert_SphereToBSplineSurface::Convert_SphereToBSplineSurface	(	const gp_Sphere &	Sph,
		const double	Param1,
		const double	Param2,
		const bool	UTrim = true )

The equivalent B-spline surface as the same orientation as the sphere in the U and V parametric directions.

Raised if UTrim = True and Param1 = Param2 or Param1 = Param2 + 2.0 * Pi Raised if UTrim = False and Param1 = Param2

Convert_SphereToBSplineSurface() [3/3]

Convert_SphereToBSplineSurface::Convert_SphereToBSplineSurface

(

const gp_Sphere &

Sph

)

The equivalent B-spline surface as the same orientation as the sphere in the U and V parametric directions.

---

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

• Convert_SphereToBSplineSurface.hxx