In article <3a394294.8235766@news.povray.org>, j.l### [at] liberoit 
(Jonathan Rafael Ghiglia) wrote:

> Why isosurface superellipsoids render faster than common ones?

The isosurface object finds the intersections by a completely different 
algorithm...the superellipsoid object solves the equations for the 
intersection of a ray and the superellipsoid, the isosurface "guesses" 
where the intersection is by sampling a superellipsoid function at 
several points on the ray. Sometimes it can find the intersection faster 
by sampling and guessing than by doing the full calculations.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><

Post a reply to this message