Plane
The plane entity consists of two perpendicular unit vectors (e1 and e2), the normal to the plane (e3), and the origin of the plane.
Data Format:
e1[3] Unit vector, in the u direction
e2[3] Unit vector, in the v direction
e3[3] Normal to the plane
origin[3] Origin of the plane
e2[3] Unit vector, in the v direction
e3[3] Normal to the plane
origin[3] Origin of the plane
Parameterization:
(x, y, z) = u * e1 + v * e2 + origin