gp_Parab2d.hxx File Reference

#include <Standard.hxx>
#include <Standard_Macro.hxx>
#include <gp_Ax22d.hxx>
#include <Standard_Real.hxx>
#include <Standard_Storable.hxx>
#include <Standard_Boolean.hxx>
#include <gp_Ax2d.hxx>
#include <gp_Pnt2d.hxx>
#include <Standard_PrimitiveTypes.hxx>
#include <gp_Parab2d.lxx>

Data Structures
class	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 More...
Functions
const Handle< Standard_Type > &	STANDARD_TYPE (gp_Parab2d)

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Function Documentation

const Handle< Standard_Type >& STANDARD_TYPE

(

gp_Parab2d

)