I was trying to make a gold texture rendering similar to the golden 'mushy
sphere posted by Tor Olev Kristensen when I accidentally came across an
optical illusion. I always thought you HAD to use a parabolic dish to get
this effect but it seems not .

I've only recently started using PoV again so please excuse any messy code.
Suggestions are always welcome.

Nekar


// Persistence Of Vision raytracer version 3.1 sample file.
// File by Alexander Enzmann
#include "metals.inc"
#include "golds.inc"
#include "shapes.inc"
#include "colors.inc"
#include "textures.inc"
#include "shapesq.inc"

global_settings { assumed_gamma 2.2 }

camera {
   location  <0, 0, -5>
   direction <0, 0, 1.2071>
   look_at   <0, 0, 0>
}



light_source { < 0, -10, -30> color red 1 green 1 blue .75 }
light_source { < 0, -10, 15> color red 1 green 0.2 blue 0.1 }
light_source { < 0, 10, 15> color red 0.1 green 0.5 blue 0.75 }

blob {
   threshold 0.6
   component 1.0, 1.0, <0.75, 0, 0>
   component 1.0, 1.0, <-0.375, 0.64952, 0>
   component 1.0, 1.0, <-0.375, -0.64952, 0>


   texture { T_Gold_1E }
   normal{
     bumps 1
     scale 0.1
   }



}



 sphere {<0, 0, 0>,1
   texture { T_Chrome_1E }
   scale 30

   }

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It's basically a mirror that rotates an object 180 degrees. I've seen it at
a science expo before. There was this light hanging in front of a parabolic
dish and there appeared a 'holographic' reflection of it turned 180 degrees.
It looked like you could touch it but your hand would just go through it...

I've just used a blob with three spheres instead of a light-globe.

Nekar

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Just came across your illusion! It's intriguing! Also moving the blob
slightly changes the illusion, although at the origin the effect is best!
Thanks for sharing this. It might give ideas for special scenes...

Thomas

"Nekar Xenos" <vir### [at] iconcoza> schreef in bericht
news:3a9a0425@news.povray.org...
> It's basically a mirror that rotates an object 180 degrees. I've seen it
at
> a science expo before. There was this light hanging in front of a
parabolic
> dish and there appeared a 'holographic' reflection of it turned 180
degrees.
> It looked like you could touch it but your hand would just go through
it...
>
> I've just used a blob with three spheres instead of a light-globe.
>
> Nekar
>
>

Post a reply to this message

> Thanks for sharing this.

It's a pleasure.

>It might give ideas for special scenes...

=)

Nekar


--
#local N=<-4,8,20>;#local K=<4,-8,20>;#local R=seed(0);union{#while((K-N).x>0)
#local X=N;#local N=N+<rand(R),rand(R),1>/30;#local N=(vlength(N-K)<vlength(X-K
)?N:2*X-N);sphere{<N.y,-N.x,N.z>,.2}sphere{N,.2}sphere{<-N.x-8,N.y,N.z>,.1//-NX
pigment{rgb N}}sphere{<N.x+8,-N.y,N.z>,.1 pigment{rgb N}}#end pigment{rgb 9}}

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