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// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to
// this header file considered to be the "object code" form of the original source.
#ifndef _Geom2d_Conic_HeaderFile
#define _Geom2d_Conic_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineHandle.hxx>
#include <Handle_Geom2d_Conic.hxx>
#include <gp_Ax22d.hxx>
#include <Geom2d_Curve.hxx>
#include <Standard_Real.hxx>
#include <GeomAbs_Shape.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
class Standard_ConstructionError;
class Standard_DomainError;
class gp_Ax22d;
class gp_Ax2d;
class gp_Pnt2d;
//! The abstract class Conic describes the common
//! behavior of conic curves in 2D space and, in
//! particular, their general characteristics. The Geom2d
//! package provides four specific classes of conics:
//! Geom2d_Circle, Geom2d_Ellipse,
//! Geom2d_Hyperbola and Geom2d_Parabola.
//! A conic is positioned in the plane with a coordinate
//! system (gp_Ax22d object), where the origin is the
//! center of the conic (or the apex in case of a parabola).
//! This coordinate system is the local coordinate
//! system of the conic. It gives the conic an explicit
//! orientation, determining the direction in which the
//! parameter increases along the conic. The "X Axis" of
//! the local coordinate system also defines the origin of
//! the parameter of the conic.
class Geom2d_Conic : public Geom2d_Curve
{
public:
//! Modifies this conic, redefining its local coordinate system
//! partially, by assigning P as its origin
Standard_EXPORT void SetAxis (const gp_Ax22d& A) ;
Standard_EXPORT void SetXAxis (const gp_Ax2d& A) ;
//! Assigns the origin and unit vector of axis A to the
//! origin of the local coordinate system of this conic and either:
//! - its "X Direction", or
//! - its "Y Direction".
//! The other unit vector of the local coordinate system
//! of this conic is recomputed normal to A, without
//! changing the orientation of the local coordinate
//! system (right-handed or left-handed).
Standard_EXPORT void SetYAxis (const gp_Ax2d& A) ;
//! Modifies this conic, redefining its local coordinate
//! system fully, by assigning A as this coordinate system.
Standard_EXPORT void SetLocation (const gp_Pnt2d& P) ;
//! Returns the "XAxis" of the conic.
//! This axis defines the origin of parametrization of the conic.
//! This axis and the "Yaxis" define the local coordinate system
//! of the conic.
//! -C++: return const&
Standard_EXPORT gp_Ax2d XAxis() const;
//! Returns the "YAxis" of the conic.
//! The "YAxis" is perpendicular to the "Xaxis".
Standard_EXPORT gp_Ax2d YAxis() const;
//! returns the eccentricity value of the conic e.
//! e = 0 for a circle
//! 0 < e < 1 for an ellipse (e = 0 if MajorRadius = MinorRadius)
//! e > 1 for a hyperbola
//! e = 1 for a parabola
Standard_EXPORT virtual Standard_Real Eccentricity() const = 0;
//! Returns the location point of the conic.
//! For the circle, the ellipse and the hyperbola it is the center of
//! the conic. For the parabola it is the vertex of the parabola.
Standard_EXPORT gp_Pnt2d Location() const;
//! Returns the local coordinates system of the conic.
Standard_EXPORT const gp_Ax22d& Position() const;
//! Reverses the direction of parameterization of <me>.
//! The local coordinate system of the conic is modified.
Standard_EXPORT void Reverse() ;
//! Returns the parameter on the reversed curve for
//! the point of parameter U on <me>.
Standard_EXPORT virtual Standard_Real ReversedParameter (const Standard_Real U) const = 0;
//! Returns GeomAbs_CN which is the global continuity of any conic.
Standard_EXPORT GeomAbs_Shape Continuity() const;
//! Returns True, the order of continuity of a conic is infinite.
Standard_EXPORT Standard_Boolean IsCN (const Standard_Integer N) const;
DEFINE_STANDARD_RTTI(Geom2d_Conic)
protected:
gp_Ax22d pos;
private:
};
#endif // _Geom2d_Conic_HeaderFile
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