Dave VanHorn nous apporta ses lumieres ainsi en ce 2004/05/17 19:12... :

>>It's the cylinder with its media interior that is the spark (but you've
>>allready figured that out, I guess), change its length and/or scale it
>>to make it fit your scene then translate/rotate it in place.
>>    
>>
>
>I'm having limited success.  I've got some control over it, but not having
>any luck at scaling it out to the big spark, 22 inches long (22 pov units,
>or 220 pov units, or... )  Everything I do is scaled in inches, mm, or some
>other real unit, so that measured parts actually fit in the scene.
>
>  
>
>>>BTW: Does this sort of spark, act as a light source?
>>>      
>>>
>>The spark in my code does not light up the scene by it self unless you
>>use radiosity (I have not tested that with this scene). I included one
>>area light to approximate the light from the spark.
>>    
>>
>
>I have radiosity turned on, but how do I make the sparks act as light
>sources?
>
>
>  
>
When radiosity is on, then any media with any emission is a light 
source. You may try uping the emission value (>1), or using colour 
values greater than 1.

Your big spark looks like the media is perpendicular to it's containing 
cylinder.

Alain

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