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On 13 Feb 2002 14:04:51 -0500, Warp wrote:
> Ron Parker <ron### [at] povray org> wrote:
>:> Does it work for reflections/refractions as well?-)
>
>: No. But then, those are harder for the existing AA methods too.
>
> How so?
Supersampling over a single screen pixel isn't enough to resolve fine details
if they're magnified by reflections or refractions. That's one of the
problems that the Tracing Ray Differentials paper was trying to solve.
--
#macro R(L P)sphere{L __}cylinder{L P __}#end#macro P(_1)union{R(z+_ z)R(-z _-z)
R(_-z*3_+z)torus{1__ clipped_by{plane{_ 0}}}translate z+_1}#end#macro S(_)9-(_1-
_)*(_1-_)#end#macro Z(_1 _ __)union{P(_)P(-_)R(y-z-1_)translate.1*_1-y*8pigment{
rgb<S(7)S(5)S(3)>}}#if(_1)Z(_1-__,_,__)#end#end Z(10x*-2,.2)camera{rotate x*90}
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