Geom_Plane
Geom_Plane Class Reference
Describes a plane in 3D space.
A plane is positioned in space by a coordinate system
(a gp_Ax3 object) such that the plane is defined by
the origin, "X Direction" and "Y Direction" of this
coordinate system.
This coordinate system is the "local coordinate <br> system" of the plane. The following apply:
- Its "X Direction" and "Y Direction" are respectively
the u and v parametric directions of the plane.
- Its origin is the origin of the u and v parameters
(also called the "origin" of the plane).
- Its "main Direction" is a vector normal to the plane.
This normal vector gives the orientation of the
plane only if the local coordinate system is "direct".
(The orientation of the plane is always defined by
the "X Direction" and the "Y Direction" of its local
coordinate system.)
The parametric equation of the plane is:
P(u, v) = O + u*XDir + v*YDir
where O, XDir and YDir are respectively the
origin, the "X Direction" and the "Y Direction" of the
local coordinate system of the plane.
The parametric range of the two parameters u and v
is ] -infinity, +infinity [.
#include <Geom_Plane.hxx>
Inheritance diagram for Geom_Plane: