GCE2d_MakeEllipse Class Reference

This class implements the following algorithms used to create Ellipse from Geom2d. More...

#include <GCE2d_MakeEllipse.hxx>

Inheritance diagram for GCE2d_MakeEllipse:

Public Member Functions
	GCE2d_MakeEllipse (const gp_Elips2d &E)
	Creates an ellipse from a non persistent one from package gp. More...
	GCE2d_MakeEllipse (const gp_Ax2d &MajorAxis, const Standard_Real MajorRadius, const Standard_Real MinorRadius, const Standard_Boolean Sense=Standard_True)
	MajorAxis is the local coordinate system of the ellipse. It is the "XAxis". The minor axis is the YAxis of the ellipse. Sense give the sense of parametrization of the Ellipse. It is not forbidden to create an ellipse with MajorRadius = MinorRadius. The status is "InvertRadius" if MajorRadius < MinorRadius or "NegativeRadius" if MinorRadius < 0. More...
	GCE2d_MakeEllipse (const gp_Ax22d &Axis, const Standard_Real MajorRadius, const Standard_Real MinorRadius)
	Axis is the local coordinate system of the ellipse. It is not forbidden to create an ellipse with MajorRadius = MinorRadius. The status is "InvertRadius" if MajorRadius < MinorRadius or "NegativeRadius" if MinorRadius < 0. More...
	GCE2d_MakeEllipse (const gp_Pnt2d &S1, const gp_Pnt2d &S2, const gp_Pnt2d &Center)
	Make an Ellipse centered on the point Center, where. More...
const Handle< Geom2d_Ellipse > &	Value () const
	Returns the constructed ellipse. Exceptions StdFail_NotDone if no ellipse is constructed. More...
	operator const Handle< Geom2d_Ellipse > & () const
Public Member Functions inherited from GCE2d_Root
Standard_Boolean	IsDone () const
	Returns true if the construction is successful. More...
gce_ErrorType	Status () const
	Returns the status of the construction. More...

Additional Inherited Members
Protected Attributes inherited from GCE2d_Root
gce_ErrorType	TheError

Detailed Description

This class implements the following algorithms used to create Ellipse from Geom2d.

• Create an Ellipse from two apex and the center. Defines an ellipse in 2D space. The parametrization range is [0,2*PI]. The ellipse is a closed and periodic curve. The center of the ellipse is the "Location" point of its axis placement "XAxis". The "XAxis" of the ellipse defines the origin of the parametrization, it is the major axis of the ellipse. The YAxis is the minor axis of the ellipse.

Constructor & Destructor Documentation

GCE2d_MakeEllipse::GCE2d_MakeEllipse

(

const gp_Elips2d &

E

)

Creates an ellipse from a non persistent one from package gp.

GCE2d_MakeEllipse::GCE2d_MakeEllipse	(	const gp_Ax2d &	MajorAxis,
		const Standard_Real	MajorRadius,
		const Standard_Real	MinorRadius,
		const Standard_Boolean	Sense = Standard_True
	)

MajorAxis is the local coordinate system of the ellipse. It is the "XAxis". The minor axis is the YAxis of the ellipse. Sense give the sense of parametrization of the Ellipse. It is not forbidden to create an ellipse with MajorRadius = MinorRadius. The status is "InvertRadius" if MajorRadius < MinorRadius or "NegativeRadius" if MinorRadius < 0.

GCE2d_MakeEllipse::GCE2d_MakeEllipse	(	const gp_Ax22d &	Axis,
		const Standard_Real	MajorRadius,
		const Standard_Real	MinorRadius
	)

Axis is the local coordinate system of the ellipse. It is not forbidden to create an ellipse with MajorRadius = MinorRadius. The status is "InvertRadius" if MajorRadius < MinorRadius or "NegativeRadius" if MinorRadius < 0.

GCE2d_MakeEllipse::GCE2d_MakeEllipse	(	const gp_Pnt2d &	S1,
		const gp_Pnt2d &	S2,
		const gp_Pnt2d &	Center
	)

Make an Ellipse centered on the point Center, where.

• the major axis of the ellipse is defined by Center and S1,
• its major radius is the distance between Center and S1, and
• its minor radius is the distance between S2 and the major axis. The implicit orientation of the ellipse is:
• the sense defined by Axis or E,
• the sense defined by points Center, S1 and S2,
• the trigonometric sense if Sense is not given or is true, or
• the opposite sense if Sense is false.

Member Function Documentation

GCE2d_MakeEllipse::operator const Handle< Geom2d_Ellipse > & ( ) const

inline

const Handle< Geom2d_Ellipse >& GCE2d_MakeEllipse::Value

(

)

const

Returns the constructed ellipse. Exceptions StdFail_NotDone if no ellipse is constructed.

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

• GCE2d_MakeEllipse.hxx