// 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 _gp_Parab2d_HeaderFile #define _gp_Parab2d_HeaderFile #ifndef _Standard_HeaderFile #include #endif #ifndef _Standard_Macro_HeaderFile #include #endif #ifndef _gp_Ax22d_HeaderFile #include #endif #ifndef _Standard_Real_HeaderFile #include #endif #ifndef _Standard_Storable_HeaderFile #include #endif #ifndef _Standard_Boolean_HeaderFile #include #endif #ifndef _gp_Ax2d_HeaderFile #include #endif #ifndef _gp_Pnt2d_HeaderFile #include #endif #ifndef _Standard_PrimitiveTypes_HeaderFile #include #endif class Standard_ConstructionError; class gp_Ax2d; class gp_Ax22d; class gp_Pnt2d; class gp_Trsf2d; class gp_Vec2d; Standard_EXPORT const Handle(Standard_Type)& STANDARD_TYPE(gp_Parab2d); //! Describes a parabola in the plane (2D space).
//! A parabola is defined by its focal length (that is, the
//! distance between its focus and apex) and positioned in
//! the plane with a coordinate system (a gp_Ax22d object) where:
//! - the origin of the coordinate system is on the apex of
//! the parabola, and
//! - the "X Axis" of the coordinate system is the axis of
//! symmetry; the parabola is on the positive side of this axis.
//! This coordinate system is the "local coordinate system"
//! of the parabola. Its orientation (direct or indirect sense)
//! gives an implicit orientation to the parabola.
//! In this coordinate system, the equation for the parabola is:
//! Y**2 = (2*P) * X.
//! where P, referred to as the parameter of the parabola, is
//! the distance between the focus and the directrix (P is
//! twice the focal length).
//! See Also
//! GCE2d_MakeParab2d which provides functions for
//! more complex parabola constructions
//! Geom2d_Parabola which provides additional functions
//! for constructing parabolas and works, in particular, with
//! the parametric equations of parabolas
class gp_Parab2d { public: void* operator new(size_t,void* anAddress) { return anAddress; } void* operator new(size_t size) { return Standard::Allocate(size); } void operator delete(void *anAddress) { if (anAddress) Standard::Free((Standard_Address&)anAddress); } //! Creates an indefinite parabola.
gp_Parab2d(); //! Creates a parabola with its vertex point, its axis of symmetry
//! ("XAxis") and its focal length.
//! The sense of parametrization is given by Sense.
//! Warnings : It is possible to have Focal = 0.
//! Raises ConstructionError if Focal < 0.0
gp_Parab2d(const gp_Ax2d& MirrorAxis,const Standard_Real Focal,const Standard_Boolean Sense = Standard_True); //! Creates a parabola with its vertex point, its axis of symmetry
//! ("XAxis") and its focal length.
//! The sense of parametrization is given by A.
//! Warnings : It is possible to have Focal = 0.
//! Raises ConstructionError if Focal < 0.0
gp_Parab2d(const gp_Ax22d& A,const Standard_Real Focal); //! Creates a parabola with the directrix and the focus point.
//! The sense of parametrization is given by Sense.
Standard_EXPORT gp_Parab2d(const gp_Ax2d& D,const gp_Pnt2d& F,const Standard_Boolean Sense = Standard_True); //! Creates a parabola with the directrix and the focus point.
//! The Sense of parametrization is given by D.
Standard_EXPORT gp_Parab2d(const gp_Ax22d& D,const gp_Pnt2d& F); //! Changes the focal distance of the parabola
//! Warnings : It is possible to have Focal = 0.
//! Raises ConstructionError if Focal < 0.0
void SetFocal(const Standard_Real Focal) ; //! Changes the "Location" point of the parabola. It is the
//! vertex of the parabola.
void SetLocation(const gp_Pnt2d& P) ; //! Modifies this parabola, by redefining its local coordinate system so that
//! its origin and "X Direction" become those of the axis
//! MA. The "Y Direction" of the local coordinate system is
//! then recomputed. The orientation of the local
//! coordinate system is not modified.
void SetMirrorAxis(const gp_Ax2d& A) ; //! Changes the local coordinate system of the parabola.
//! The "Location" point of A becomes the vertex of the parabola.
void SetAxis(const gp_Ax22d& A) ; //! Computes the coefficients of the implicit equation of the parabola.
//! A * (X**2) + B * (Y**2) + 2*C*(X*Y) + 2*D*X + 2*E*Y + F = 0.
Standard_EXPORT void Coefficients(Standard_Real& A,Standard_Real& B,Standard_Real& C,Standard_Real& D,Standard_Real& E,Standard_Real& F) const; //! Computes the directrix of the parabola.
//! The directrix is:
//! - a line parallel to the "Y Direction" of the local
//! coordinate system of this parabola, and
//! - located on the negative side of the axis of symmetry,
//! at a distance from the apex which is equal to the focal length of this parabola.
//! The directrix is returned as an axis (a gp_Ax2d object),
//! the origin of which is situated on the "X Axis" of this parabola.
gp_Ax2d Directrix() const; //! Returns the distance between the vertex and the focus
//! of the parabola.
Standard_Real Focal() const; //! Returns the focus of the parabola.
gp_Pnt2d Focus() const; //! Returns the vertex of the parabola.
gp_Pnt2d Location() const; //! Returns the symmetry axis of the parabola.
//! The "Location" point of this axis is the vertex of the parabola.
gp_Ax2d MirrorAxis() const; //! Returns the local coordinate system of the parabola.
//! The "Location" point of this axis is the vertex of the parabola.
gp_Ax22d Axis() const; //! Returns the distance between the focus and the
//! directrix of the parabola.
Standard_Real Parameter() const; void Reverse() ; //! Reverses the orientation of the local coordinate system
//! of this parabola (the "Y Direction" is reversed).
//! Therefore, the implicit orientation of this parabola is reversed.
//! Note:
//! - Reverse assigns the result to this parabola, while
//! - Reversed creates a new one.
gp_Parab2d Reversed() const; //! Returns true if the local coordinate system is direct
//! and false in the other case.
Standard_Boolean IsDirect() const; Standard_EXPORT void Mirror(const gp_Pnt2d& P) ; //! Performs the symmetrical transformation of a parabola with respect
//! to the point P which is the center of the symmetry
Standard_EXPORT gp_Parab2d Mirrored(const gp_Pnt2d& P) const; Standard_EXPORT void Mirror(const gp_Ax2d& A) ; //! Performs the symmetrical transformation of a parabola with respect
//! to an axis placement which is the axis of the symmetry.
Standard_EXPORT gp_Parab2d Mirrored(const gp_Ax2d& A) const; void Rotate(const gp_Pnt2d& P,const Standard_Real Ang) ; //! Rotates a parabola. P is the center of the rotation.
//! Ang is the angular value of the rotation in radians.
gp_Parab2d Rotated(const gp_Pnt2d& P,const Standard_Real Ang) const; void Scale(const gp_Pnt2d& P,const Standard_Real S) ; //! Scales a parabola. S is the scaling value.
//! If S is negative the direction of the symmetry axis
//! "XAxis" is reversed and the direction of the "YAxis" too.
gp_Parab2d Scaled(const gp_Pnt2d& P,const Standard_Real S) const; void Transform(const gp_Trsf2d& T) ; //! Transforms an parabola with the transformation T from class Trsf2d.
gp_Parab2d Transformed(const gp_Trsf2d& T) const; void Translate(const gp_Vec2d& V) ; //! Translates a parabola in the direction of the vector V.
//! The magnitude of the translation is the vector's magnitude.
gp_Parab2d Translated(const gp_Vec2d& V) const; void Translate(const gp_Pnt2d& P1,const gp_Pnt2d& P2) ; //! Translates a parabola from the point P1 to the point P2.
gp_Parab2d Translated(const gp_Pnt2d& P1,const gp_Pnt2d& P2) const; const gp_Ax22d& _CSFDB_Getgp_Parab2dpos() const { return pos; } Standard_Real _CSFDB_Getgp_Parab2dfocalLength() const { return focalLength; } void _CSFDB_Setgp_Parab2dfocalLength(const Standard_Real p) { focalLength = p; } protected: private: gp_Ax22d pos; Standard_Real focalLength; }; #include // other Inline functions and methods (like "C++: function call" methods) #endif