// 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_Circle_HeaderFile #define _Geom2d_Circle_HeaderFile #ifndef _Standard_HeaderFile #include #endif #ifndef _Standard_DefineHandle_HeaderFile #include #endif #ifndef _Handle_Geom2d_Circle_HeaderFile #include #endif #ifndef _Standard_Real_HeaderFile #include #endif #ifndef _Geom2d_Conic_HeaderFile #include #endif #ifndef _Standard_Boolean_HeaderFile #include #endif #ifndef _Standard_Integer_HeaderFile #include #endif #ifndef _Handle_Geom2d_Geometry_HeaderFile #include #endif class Standard_ConstructionError; class Standard_RangeError; class gp_Circ2d; class gp_Ax2d; class gp_Ax22d; class gp_Pnt2d; class gp_Vec2d; class gp_Trsf2d; class Geom2d_Geometry; //! Describes a circle in the plane (2D space).
//! A circle is defined by its radius and, as with any conic
//! curve, is positioned in the plane with a coordinate
//! system (gp_Ax22d object) where the origin is the
//! center of the circle.
//! The coordinate system is the local coordinate
//! system of the circle.
//! The orientation (direct or indirect) of the local
//! coordinate system gives an explicit orientation to the
//! circle, determining the direction in which the
//! parameter increases along the circle.
//! The Geom2d_Circle circle is parameterized by an angle:
//! P(U) = O + R*Cos(U)*XDir + R*Sin(U)*YDir
//! where:
//! - P is the point of parameter U,
//! - O, XDir and YDir are respectively the origin, "X
//! Direction" and "Y Direction" of its local coordinate system,
//! - R is the radius of the circle.
//! The "X Axis" of the local coordinate system therefore
//! defines the origin of the parameter of the circle. The
//! parameter is the angle with this "X Direction".
//! A circle is a closed and periodic curve. The period is
//! 2.*Pi and the parameter range is [ 0,2.*Pi [.
//! See Also
//! GCE2d_MakeCircle which provides functions for
//! more complex circle constructions
//! gp_Ax22d and gp_Circ2d for an equivalent, non-parameterized data structure.
class Geom2d_Circle : public Geom2d_Conic { public: //! Constructs a circle by conversion of the gp_Circ2d circle C.
Standard_EXPORT Geom2d_Circle(const gp_Circ2d& C); //! Constructs a circle of radius Radius, whose center is the origin of axis
//! A; A is the "X Axis" of the local coordinate system
//! of the circle; this coordinate system is direct if
//! Sense is true (default value) or indirect if Sense is false.
//! Note: It is possible to create a circle where Radius is equal to 0.0.
//! Exceptions Standard_ConstructionError if Radius is negative.
Standard_EXPORT Geom2d_Circle(const gp_Ax2d& A,const Standard_Real Radius,const Standard_Boolean Sense = Standard_True); //! Constructs a circle
//! of radius Radius, where the coordinate system A
//! locates the circle and defines its orientation in the plane such that:
//! - the center of the circle is the origin of A,
//! - the orientation (direct or indirect) of A gives the
//! orientation of the circle.
Standard_EXPORT Geom2d_Circle(const gp_Ax22d& A,const Standard_Real Radius); //! Converts the gp_Circ2d circle C into this circle.
Standard_EXPORT void SetCirc2d(const gp_Circ2d& C) ; Standard_EXPORT void SetRadius(const Standard_Real R) ; //! Returns the non persistent circle from gp with the same
//! geometric properties as .
Standard_EXPORT gp_Circ2d Circ2d() const; //! Returns the radius of this circle.
Standard_EXPORT Standard_Real Radius() const; //! Computes the parameter on the reversed circle for
//! the point of parameter U on this circle.
//! For a circle, the returned value is: 2.*Pi - U.
Standard_EXPORT Standard_Real ReversedParameter(const Standard_Real U) const; //! Returns 0., which is the eccentricity of any circle.
Standard_EXPORT Standard_Real Eccentricity() const; //! Returns 0.0
Standard_EXPORT Standard_Real FirstParameter() const; //! Returns 2*PI.
Standard_EXPORT Standard_Real LastParameter() const; //! returns True.
Standard_EXPORT Standard_Boolean IsClosed() const; //! returns True. The period of a circle is 2.*Pi.
Standard_EXPORT Standard_Boolean IsPeriodic() const; //! Returns in P the point of parameter U.
//! P = C + R * Cos (U) * XDir + R * Sin (U) * YDir
//! where C is the center of the circle , XDir the XDirection and
//! YDir the YDirection of the circle's local coordinate system.
Standard_EXPORT void D0(const Standard_Real U,gp_Pnt2d& P) const; //! Returns the point P of parameter U and the first derivative V1.
Standard_EXPORT void D1(const Standard_Real U,gp_Pnt2d& P,gp_Vec2d& V1) const; //! Returns the point P of parameter U, the first and second
//! derivatives V1 and V2.
Standard_EXPORT void D2(const Standard_Real U,gp_Pnt2d& P,gp_Vec2d& V1,gp_Vec2d& V2) const; //! Returns the point P of parameter u, the first second and third
//! derivatives V1 V2 and V3.
Standard_EXPORT void D3(const Standard_Real U,gp_Pnt2d& P,gp_Vec2d& V1,gp_Vec2d& V2,gp_Vec2d& V3) const; //! For the point of parameter U of this circle, computes
//! the vector corresponding to the Nth derivative.
//! Exceptions: Standard_RangeError if N is less than 1.
Standard_EXPORT gp_Vec2d DN(const Standard_Real U,const Standard_Integer N) const; //! Applies the transformation T to this circle.
Standard_EXPORT void Transform(const gp_Trsf2d& T) ; //! Creates a new object which is a copy of this circle.
Standard_EXPORT Handle_Geom2d_Geometry Copy() const; DEFINE_STANDARD_RTTI(Geom2d_Circle) protected: private: Standard_Real radius; }; // other Inline functions and methods (like "C++: function call" methods) #endif