Open CASCADE Technology  6.5.4
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Public Member Functions
gce_MakeElips2d Class Reference

This class implements the following algorithms used to
create Elips2d from gp.

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#include <gce_MakeElips2d.hxx>

Inheritance diagram for gce_MakeElips2d:
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Public Member Functions

DEFINE_STANDARD_ALLOC gce_MakeElips2d (const gp_Ax2d &MajorAxis, const Standard_Real MajorRadius, const Standard_Real MinorRadius, const Standard_Boolean Sense=Standard_True)
 Creates an ellipse with the major axis, the major and the
minor radius. The location of the MajorAxis is the center
of the ellipse.
The sense of parametrization is given by Sense.
It is possible to create an ellipse with MajorRadius = MinorRadius.
the status is "InvertRadius" if MajorRadius < MinorRadius or
"NegativeRadius" if MinorRadius < 0.0

 gce_MakeElips2d (const gp_Ax22d &A, const Standard_Real MajorRadius, const Standard_Real MinorRadius)
 Axis defines the Xaxis and Yaxis of the ellipse which defines
the origin and the sense of parametrization.
Creates an ellipse with the AxisPlacement the major and the
minor radius. The location of Axis is the center
of the ellipse.
It is possible to create an ellipse with MajorRadius = MinorRadius.
the status is "InvertRadius" if MajorRadius < MinorRadius or
"NegativeRadius" if MinorRadius < 0.0

 gce_MakeElips2d (const gp_Pnt2d &S1, const gp_Pnt2d &S2, const gp_Pnt2d &Center)
 Makes an Elips2d with its center and two points.
The sense of parametrization is given by S1, S2,
and Center.
Depending on the constructor, the implicit orientation of the ellipse is:

const gp_Elips2dValue () const
 Returns the constructed ellipse.
Exceptions StdFail_NotDone if no ellipse is constructed.

const gp_Elips2dOperator () const
 operator gp_Elips2d () const

Detailed Description


Constructor & Destructor Documentation

  • the sense defined by A,
  • the sense defined by points Center, S1 and S2,
  • the trigonometric sense if Sense is not given or is true, or
  • the opposite if Sense is false.
    It is possible to construct an ellipse where the major
    and minor radii are equal.
    Warning
    If an error occurs (that is, when IsDone returns
    false), the Status function returns:
  • gce_InvertRadius if MajorRadius is less than MinorRadius,
  • gce_NegativeRadius if MajorRadius or
    MinorRadius is less than 0.0,
  • gce_NullAxis if points S1, S2 and Center are collinear, or
  • gce_InvertAxis if the major radius computed with
    Center and S1 is less than the minor radius
    computed with Center, S1 and S2.

Member Function Documentation

gce_MakeElips2d::operator gp_Elips2d ( ) const

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