Describes the common behavior for surfaces constructed by sweeping a curve with another curve. The Geom package provides two concrete derived surfaces: surface of revolution (a revolved surface), and surface of linear extrusion (an extruded surface). More...

#include <Geom_SweptSurface.hxx>

Inheritance diagram for Geom_SweptSurface:

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Public Member Functions
GeomAbs_Shape	Continuity () const override
	returns the continuity of the surface : C0 : only geometric continuity, C1 : continuity of the first derivative all along the surface, C2 : continuity of the second derivative all along the surface, C3 : continuity of the third derivative all along the surface, G1 : tangency continuity all along the surface, G2 : curvature continuity all along the surface, CN : the order of continuity is infinite.

const gp_Dir &	Direction () const
	Returns the reference direction of the swept surface. For a surface of revolution it is the direction of the revolution axis, for a surface of linear extrusion it is the direction of extrusion.

Handle< Geom_Curve >	BasisCurve () const
	Returns the referenced curve of the surface. For a surface of revolution it is the revolution curve, for a surface of linear extrusion it is the extruded curve.

virtual void	DumpJson (Standard_OStream &theOStream, Standard_Integer theDepth=-1) const override
	Dumps the content of me into the stream.

Public Member Functions inherited from Geom_Surface
virtual void	UReverse ()=0
	Reverses the U direction of parametrization of <me>. The bounds of the surface are not modified.

Handle< Geom_Surface >	UReversed () const
	Reverses the U direction of parametrization of <me>. The bounds of the surface are not modified. A copy of <me> is returned.

virtual Standard_Real	UReversedParameter (const Standard_Real U) const =0
	Returns the parameter on the Ureversed surface for the point of parameter U on <me>.

virtual void	VReverse ()=0
	Reverses the V direction of parametrization of <me>. The bounds of the surface are not modified.

Handle< Geom_Surface >	VReversed () const
	Reverses the V direction of parametrization of <me>. The bounds of the surface are not modified. A copy of <me> is returned.

virtual Standard_Real	VReversedParameter (const Standard_Real V) const =0
	Returns the parameter on the Vreversed surface for the point of parameter V on <me>.

virtual void	TransformParameters (Standard_Real &U, Standard_Real &V, const gp_Trsf &T) const
	Computes the parameters on the transformed surface for the transform of the point of parameters U,V on <me>.

virtual gp_GTrsf2d	ParametricTransformation (const gp_Trsf &T) const
	Returns a 2d transformation used to find the new parameters of a point on the transformed surface.

virtual void	Bounds (Standard_Real &U1, Standard_Real &U2, Standard_Real &V1, Standard_Real &V2) const =0
	Returns the parametric bounds U1, U2, V1 and V2 of this surface. If the surface is infinite, this function can return a value equal to Precision::Infinite: instead of Standard_Real::LastReal.

virtual Standard_Boolean	IsUClosed () const =0
	Checks whether this surface is closed in the u parametric direction. Returns true if, in the u parametric direction: taking uFirst and uLast as the parametric bounds in the u parametric direction, for each parameter v, the distance between the points P(uFirst, v) and P(uLast, v) is less than or equal to gp::Resolution().

virtual Standard_Boolean	IsVClosed () const =0
	Checks whether this surface is closed in the u parametric direction. Returns true if, in the v parametric direction: taking vFirst and vLast as the parametric bounds in the v parametric direction, for each parameter u, the distance between the points P(u, vFirst) and P(u, vLast) is less than or equal to gp::Resolution().

virtual Standard_Boolean	IsUPeriodic () const =0
	Checks if this surface is periodic in the u parametric direction. Returns true if:

virtual Standard_Real	UPeriod () const
	Returns the period of this surface in the u parametric direction. Raises if the surface is not uperiodic.

virtual Standard_Boolean	IsVPeriodic () const =0
	Checks if this surface is periodic in the v parametric direction. Returns true if:

virtual Standard_Real	VPeriod () const
	Returns the period of this surface in the v parametric direction. raises if the surface is not vperiodic.

virtual Handle< Geom_Curve >	UIso (const Standard_Real U) const =0
	Computes the U isoparametric curve.

virtual Handle< Geom_Curve >	VIso (const Standard_Real V) const =0
	Computes the V isoparametric curve.

virtual Standard_Boolean	IsCNu (const Standard_Integer N) const =0
	Returns the order of continuity of the surface in the U parametric direction. Raised if N < 0.

virtual Standard_Boolean	IsCNv (const Standard_Integer N) const =0
	Returns the order of continuity of the surface in the V parametric direction. Raised if N < 0.

virtual void	D0 (const Standard_Real U, const Standard_Real V, gp_Pnt &P) const =0
	Computes the point of parameter U,V on the surface.

virtual void	D1 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V) const =0
	Computes the point P and the first derivatives in the directions U and V at this point. Raised if the continuity of the surface is not C1.

virtual void	D2 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V, gp_Vec &D2U, gp_Vec &D2V, gp_Vec &D2UV) const =0
	Computes the point P, the first and the second derivatives in the directions U and V at this point. Raised if the continuity of the surface is not C2.

virtual void	D3 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V, gp_Vec &D2U, gp_Vec &D2V, gp_Vec &D2UV, gp_Vec &D3U, gp_Vec &D3V, gp_Vec &D3UUV, gp_Vec &D3UVV) const =0
	Computes the point P, the first,the second and the third derivatives in the directions U and V at this point. Raised if the continuity of the surface is not C2.

virtual gp_Vec	DN (const Standard_Real U, const Standard_Real V, const Standard_Integer Nu, const Standard_Integer Nv) const =0
	Computes the derivative of order Nu in the direction U and Nv in the direction V at the point P(U, V).

gp_Pnt	Value (const Standard_Real U, const Standard_Real V) const
	Computes the point of parameter (U, V) on the surface.

Public Member Functions inherited from Geom_Geometry
void	Mirror (const gp_Pnt &P)
	Performs the symmetrical transformation of a Geometry with respect to the point P which is the center of the symmetry.

void	Mirror (const gp_Ax1 &A1)
	Performs the symmetrical transformation of a Geometry with respect to an axis placement which is the axis of the symmetry.

void	Mirror (const gp_Ax2 &A2)
	Performs the symmetrical transformation of a Geometry with respect to a plane. The axis placement A2 locates the plane of the symmetry : (Location, XDirection, YDirection).

void	Rotate (const gp_Ax1 &A1, const Standard_Real Ang)
	Rotates a Geometry. A1 is the axis of the rotation. Ang is the angular value of the rotation in radians.

void	Scale (const gp_Pnt &P, const Standard_Real S)
	Scales a Geometry. S is the scaling value.

void	Translate (const gp_Vec &V)
	Translates a Geometry. V is the vector of the translation.

void	Translate (const gp_Pnt &P1, const gp_Pnt &P2)
	Translates a Geometry from the point P1 to the point P2.

virtual void	Transform (const gp_Trsf &T)=0
	Transformation of a geometric object. This tansformation can be a translation, a rotation, a symmetry, a scaling or a complex transformation obtained by combination of the previous elementaries transformations. (see class Transformation of the package Geom).

Handle< Geom_Geometry >	Mirrored (const gp_Pnt &P) const

Handle< Geom_Geometry >	Mirrored (const gp_Ax1 &A1) const

Handle< Geom_Geometry >	Mirrored (const gp_Ax2 &A2) const

Handle< Geom_Geometry >	Rotated (const gp_Ax1 &A1, const Standard_Real Ang) const

Handle< Geom_Geometry >	Scaled (const gp_Pnt &P, const Standard_Real S) const

Handle< Geom_Geometry >	Transformed (const gp_Trsf &T) const

Handle< Geom_Geometry >	Translated (const gp_Vec &V) const

Handle< Geom_Geometry >	Translated (const gp_Pnt &P1, const gp_Pnt &P2) const

virtual Handle< Geom_Geometry >	Copy () const =0
	Creates a new object which is a copy of this geometric object.

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

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

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

virtual	~Standard_Transient ()
	Destructor must be virtual.

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.

Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName.

Standard_Boolean	IsKind (const opencascade::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.

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.

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.

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

void	IncrementRefCounter () noexcept
	Increments the reference counter of this object.

Standard_Integer	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value.

virtual void	Delete () const
	Memory deallocator for transient classes.

Protected Attributes
Handle< Geom_Curve >	basisCurve

gp_Dir	direction

GeomAbs_Shape	smooth

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object.

Static Public Member Functions inherited from Standard_Transient
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Detailed Description

Describes the common behavior for surfaces constructed by sweeping a curve with another curve. The Geom package provides two concrete derived surfaces: surface of revolution (a revolved surface), and surface of linear extrusion (an extruded surface).

Member Function Documentation

◆ BasisCurve()

Handle< Geom_Curve > Geom_SweptSurface::BasisCurve ( ) const

Returns the referenced curve of the surface. For a surface of revolution it is the revolution curve, for a surface of linear extrusion it is the extruded curve.

◆ Continuity()

GeomAbs_Shape Geom_SweptSurface::Continuity ( ) const

overridevirtual

returns the continuity of the surface : C0 : only geometric continuity, C1 : continuity of the first derivative all along the surface, C2 : continuity of the second derivative all along the surface, C3 : continuity of the third derivative all along the surface, G1 : tangency continuity all along the surface, G2 : curvature continuity all along the surface, CN : the order of continuity is infinite.

Implements Geom_Surface.

◆ Direction()

const gp_Dir & Geom_SweptSurface::Direction ( ) const

Returns the reference direction of the swept surface. For a surface of revolution it is the direction of the revolution axis, for a surface of linear extrusion it is the direction of extrusion.

◆ DumpJson()

virtual void Geom_SweptSurface::DumpJson	(	Standard_OStream &	theOStream,
		Standard_Integer	theDepth = `-1`
	)		const

overridevirtual

Dumps the content of me into the stream.

Reimplemented from Geom_Surface.

Reimplemented in Geom_SurfaceOfLinearExtrusion, and Geom_SurfaceOfRevolution.

Field Documentation

◆ basisCurve

Handle< Geom_Curve > Geom_SweptSurface::basisCurve

protected

◆ direction

gp_Dir Geom_SweptSurface::direction

protected

◆ smooth

GeomAbs_Shape Geom_SweptSurface::smooth

protected

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

Geom_SweptSurface.hxx

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ BasisCurve()

◆ Continuity()

◆ Direction()

◆ DumpJson()

Field Documentation

◆ basisCurve

◆ direction

◆ smooth