POV-Ray : Newsgroups : povray.binaries.images : Julia fractals : Re: Julia fractals Server Time
1 Aug 2024 04:12:29 EDT (-0400)
  Re: Julia fractals  
From: Alain
Date: 30 Dec 2008 22:26:17
Message: <495ae659@news.povray.org>
Jellby nous illumina en ce 2008-12-30 08:13 -->
> Among other things, Carlo C. saw fit to write:
> 
>> Simple but beautiful, and I prefer the second.
> 
> The second has some "problems" that are mitigated with the focal blur and
> reflective surface. Other artifacts disappear when the precision is
> increased, not these (I tried up to 20000), I wonder if they are "features"
> of this object.
> 
> camera
> {
>   location  < 0.0 , 0.0 , -2.8 >
>   look_at   < 0.0 , 0.0 , 0.0 >
>   up        < 0.0 , 1.0 , 0.0 >
>   right     < 1.0 , 0.0 , 0.0 >
> }
> 
> light_source {
>   < -20.0 , 20.0 , -20.0 >
>   color rgb < 1.0 , 1.0 , 1.0 >
> }
> 
> #declare Background = < 0.1812 , 0.1317 , 0.0120 > ;
> #declare Point = < 0.2642 , 0.2837 , 0.3712 , -0.0788 > * 2 ;
> #declare Vector = < -0.6886 , -0.6925 , 0.1043 , 0.9352 > ;
> #declare Distance = 0.0130 ;
> #declare Rotation = < 59.71 , 148.16 , 297.20 > ;
> 
> background {
>   color rgb 1
> }
> 
> julia_fractal {
>   Point
>   quaternion
>   sqr
>   max_iteration 7
>   precision 200
>   slice Vector, Distance
>   texture {
>     pigment { color rgb 1 }
>   }
>   scale 0.85
>   rotate Rotation
> }
> 
> 
> 
> ------------------------------------------------------------------------
> 
Those change if you place the camera at another location or you change the 
rotation. I'd call them "glitches" and computational errors.

-- 
Alain
-------------------------------------------------
I find that the harder I work, the more luck I seem to have.
Thomas Jefferson


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