// 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 _Geom_Circle_HeaderFile #define _Geom_Circle_HeaderFile #ifndef _Standard_HeaderFile #include #endif #ifndef _Standard_DefineHandle_HeaderFile #include #endif #ifndef _Handle_Geom_Circle_HeaderFile #include #endif #ifndef _Standard_Real_HeaderFile #include #endif #ifndef _Geom_Conic_HeaderFile #include #endif #ifndef _Standard_Boolean_HeaderFile #include #endif #ifndef _Standard_Integer_HeaderFile #include #endif #ifndef _Handle_Geom_Geometry_HeaderFile #include #endif class Standard_ConstructionError; class Standard_RangeError; class gp_Circ; class gp_Ax2; class gp_Pnt; class gp_Vec; class gp_Trsf; class Geom_Geometry; //! Describes a circle in 3D space.
//! A circle is defined by its radius and, as with any conic
//! curve, is positioned in space with a right-handed
//! coordinate system (gp_Ax2 object) where:
//! - the origin is the center of the circle, and
//! - the origin, "X Direction" and "Y Direction" define the
//! plane of the circle.
//! This coordinate system is the local coordinate
//! system of the circle.
//! The "main Direction" of this coordinate system is the
//! vector normal to the plane of the circle. The axis, of
//! which the origin and unit vector are respectively the
//! origin and "main Direction" of the local coordinate
//! system, is termed the "Axis" or "main Axis" of the circle.
//! The "main Direction" of the local coordinate system
//! gives an explicit orientation to the circle (definition of
//! the trigonometric sense), determining the direction in
//! which the parameter increases along the circle.
//! The Geom_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 [.
class Geom_Circle : public Geom_Conic { public: //! Constructs a circle by conversion of the gp_Circ circle C.
Standard_EXPORT Geom_Circle(const gp_Circ& C); //! Constructs a circle of radius Radius, where A2 locates the circle and
//! defines its orientation in 3D space such that:
//! - the center of the circle is the origin of A2,
//! - the origin, "X Direction" and "Y Direction" of A2
//! define the plane of the circle,
//! - A2 is the local coordinate system of the circle.
//! Note: It is possible to create a circle where Radius is equal to 0.0.
//! raised if Radius < 0.
Standard_EXPORT Geom_Circle(const gp_Ax2& A2,const Standard_Real Radius); //! Set so that has the same geometric properties as C.
Standard_EXPORT void SetCirc(const gp_Circ& C) ; //! Assigns the value R to the radius of this circle.
//! Note: it is possible to have a circle with a radius equal to 0.0.
//! Exceptions - Standard_ConstructionError if R is negative.
Standard_EXPORT void SetRadius(const Standard_Real R) ; //! returns the non transient circle from gp with the same
//! geometric properties as .
Standard_EXPORT gp_Circ Circ() 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 the eccentricity e = 0 for a circle.
Standard_EXPORT Standard_Real Eccentricity() const; //! Returns the value of the first parameter of this
//! circle. This is 0.0, which gives the start point of this circle, or
//! The start point and end point of a circle are coincident.
Standard_EXPORT Standard_Real FirstParameter() const; //! Returns the value of the last parameter of this
//! circle. This is 2.*Pi, which gives the end point of this circle.
//! The start point and end point of a circle are coincident.
Standard_EXPORT Standard_Real LastParameter() const; //! returns True.
Standard_EXPORT Standard_Boolean IsClosed() const; //! returns True.
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_Pnt& P) const; //! Returns the point P of parameter U and the first derivative V1.
Standard_EXPORT void D1(const Standard_Real U,gp_Pnt& P,gp_Vec& 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_Pnt& P,gp_Vec& V1,gp_Vec& 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_Pnt& P,gp_Vec& V1,gp_Vec& V2,gp_Vec& V3) const; //! The returned vector gives the value of the derivative for the
//! order of derivation N.
//! Raised if N < 1.
Standard_EXPORT gp_Vec DN(const Standard_Real U,const Standard_Integer N) const; //! Applies the transformation T to this circle.
Standard_EXPORT void Transform(const gp_Trsf& T) ; //! Creates a new object which is a copy of this circle.
Standard_EXPORT Handle_Geom_Geometry Copy() const; DEFINE_STANDARD_RTTI(Geom_Circle) protected: private: Standard_Real radius; }; // other Inline functions and methods (like "C++: function call" methods) #endif