Le 18-06-22 à 12:23, jr a écrit :
> hi,
> 
> Alain <kua### [at] videotronca> wrote:
>> The actual effect of all media depend on how long is the path through
>> them as well as it's density. Double the path's length and you double
>> it's contribution.
>> Next, ...
> 
> I'll need to print, read, and then study this reply + many of the preceding.
> hoping to .. assimilate the information .. somehow.  :-)
> 
> thank you very much, and everybody who has "chipped in".
> 
> the plan now is to make a simple "pre-cursor" animation to play with the
> concept, learn.  hoping to start on this in the next few days.
> 
> 
> regards, jr.
> 
> 
> 

Two very simple tests :
1) Make a scene with a few boxes in an union. Use an orthographic 
camera. All boxes have the same frontal area, but are progressively 
deeper and filled with some uniform media. Apply the media to the whole 
union, not to each individual box.
The deeper the box, the more intense the media effect will be.

2) Make a scene where the box depth is controlled by the clock variable 
and render as an animation.
Use a box like this one :
box{<-1, -1, 0> <1, 1, 20*clock> pigment{rgbt 1}hollow
  interior{media{emission 0.1}}
}
Render with +kff10 on the command line.

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