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Jonathan Rafael Ghiglia wrote:
>
> Why isosurface superellipsoids render faster than common ones?
Because they are calculated in a different way. In fact the isosurface
version is less accurate which can lead to problems in some rare cases.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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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/
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