Function AEO = flu2aeo(F,L)
AEO = flu2aeo(F,[],U)
AEO = flu2aeo(F,[],U,epsilon)
returns the azimuth, elevation and obliquity calculated
from the given front, left and up directions.
See into the help text of m-file aeo2flu.m for the
explanation of the input and output variables.
Function flu2aeo() has some peculiarities:
-- If F and L and U are input, only F and U will be used
and L will be totally ignored.
-- When F and U are used as input, it is not necessary
that these front and up directions are perpendicular to
each other. The front and up direction vectors should
form a plane. Therefore, if the angle between the given
front and up direction vectors is 0 or 180 degrees, or
if these vectors have zero length, the corresponding
values of obliquity will be NaN.
The optional fourth argument epsilon is a scalar for the
maximal error allowed to consider (1) that the angle
between front and up direction vectors is 0 or 180
degrees, and (2) that the elevation is -90 or +90 degrees.
Its default is 1e-6.
The function internally calls the following non-standard
m-files:
-- xyz2aer.m
-- aer2xyz.m
-- cross3d.m
-- dot3d.m
-- vectorlength.m
-- vec2ang.m
(c) 2026 fabien van mook
2026.08.20 release of this file within package "fvm-geometry" under GNU GPLv3+
