gp_Parab.hxx File Reference

#include <Standard.hxx>
#include <Standard_Macro.hxx>
#include <gp_Ax2.hxx>
#include <Standard_Real.hxx>
#include <Standard_Storable.hxx>
#include <gp_Ax1.hxx>
#include <gp_Pnt.hxx>
#include <Standard_PrimitiveTypes.hxx>
#include <gp_Parab.lxx>

Data Structures
class	gp_Parab
	Describes a parabola in 3D space. A parabola is defined by its focal length (that is, the distance between its focus and apex) and positioned in space with a coordinate system (a gp_Ax2 object) where: the origin of the coordinate system is on the apex of the parabola, the "X Axis" of the coordinate system is the axis of symmetry; the parabola is on the positive side of this axis, and the origin, "X Direction" and "Y Direction" of the coordinate system define the plane of the parabola. The equation of the parabola in this coordinate system, which is the "local coordinate system" of 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). The "main Direction" of the local coordinate system gives the normal vector to the plane of the parabola. See Also gce_MakeParab which provides functions for more complex parabola constructions Geom_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_Parab)

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Function Documentation

const Handle< Standard_Type >& STANDARD_TYPE

(

gp_Parab

)