ELLIPSOIDSURFACEAREA  Approximated surface area of an ellipsoid.

   S = ellipsoidSurfaceArea(ELLI)
   Computes an approximation of the surface area of an ellipsoid. 
   ELLI is a 1-by-9 row vector given by [XC YC ZC A B C THETA PHI PSI],
   where (XC YC ZC) is the center, (A B C) is the length of each semi axis
   and (THETA PHI PSI) representes the orientation.
   If ELLI is a 1-by-3 row vector, it is assumed to contain only the
   lengths of semi-axes.

   This functions computes an approximation of the surface area, given by:
   S = 4 * pi * ( (a^p * b^p + a^p * c^p + b^p * c^p) / 3) ^ (1/p)
   with p = 1.6075. The resulting error should be less than 1.061%.

   Example
   ellipsoidSurfaceArea

   See also
   geom3d, ellipsePerimeter, oblateSurfaceArea, prolateSurfaceArea

   References
   * http://en.wikipedia.org/wiki/Ellipsoid
   * http://mathworld.wolfram.com/Ellipsoid.html

Package: matgeom