Geom_Conic.hxx File Reference

#include <Standard.hxx>
#include <Standard_DefineHandle.hxx>
#include <Handle_Geom_Conic.hxx>
#include <gp_Ax2.hxx>
#include <Geom_Curve.hxx>
#include <Standard_Real.hxx>
#include <GeomAbs_Shape.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>

Data Structures
class	Geom_Conic
	The abstract class Conic describes the common behavior of conic curves in 3D space and, in particular, their general characteristics. The Geom package provides four concrete classes of conics: Geom_Circle, Geom_Ellipse, Geom_Hyperbola and Geom_Parabola. A conic is positioned in space with a right-handed coordinate system (gp_Ax2 object), where: the origin is the center of the conic (or the apex in the case of a parabola), the origin, "X Direction" and "Y Direction" define the plane of the conic. This coordinate system is the local coordinate system of the conic. The "main Direction" of this coordinate system is the vector normal to the plane of the conic. 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 conic. The "main Direction" of the local coordinate system gives an explicit orientation to the conic, determining the direction in which the parameter increases along the conic. The "X Axis" of the local coordinate system also defines the origin of the parameter of the conic. More...