Started as an attempt at normal lightning, then I tried to make a kind 
of ball lightning, neither was very convincing and frankly both looked a 
bit of a mess. Looks more like tumbleweed but I had no bytes left to 
include a desert... Still, I quite like the image and you can play 
around with the seed() as well as the 3 (number of branches per step) 
and the 6 (total number of steps) in the macro call to generate some 
radically different tumbleweeds. I won't be entering this since I've got 
others I like more :)

#macro L(p,n,m,r)#local l=vlength(p);#local 
P=p+vnormalize(<rand(r),rand(r),rand(r)>-.5)*(.5-l)*.5;cone{p+z,(.5-l)/100,P+z,(.5-vlength(P))/100pigment{rgb(1-l+z*l)}}#if(n>0)L(p,n-1,m,r)#end#if(m)L(P,3,m-1,r)#end#end

L(0,3,6,seed(2))light_source{2-5*z,1}

Random Pete

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I have to say that i also got a <rand(), rand() , rand)> image and also as
you its a bit heavy ..




news:452f3096@news.povray.org...
> Started as an attempt at normal lightning, then I tried to make a kind
> of ball lightning, neither was very convincing and frankly both looked a
> bit of a mess. Looks more like tumbleweed but I had no bytes left to
> include a desert... Still, I quite like the image and you can play
> around with the seed() as well as the 3 (number of branches per step)
> and the 6 (total number of steps) in the macro call to generate some
> radically different tumbleweeds. I won't be entering this since I've got
> others I like more :)
>
> #macro L(p,n,m,r)#local l=vlength(p);#local
>
P=p+vnormalize(<rand(r),rand(r),rand(r)>-.5)*(.5-l)*.5;cone{p+z,(.5-l)/100,P
+z,(.5-vlength(P))/100pigment{rgb(1-l+z*l)}}#if(n>0)L(p,n-1,m,r)#end#if(m)L(
P,3,m-1,r)#end#end
> L(0,3,6,seed(2))light_source{2-5*z,1}
>
> Random Pete
>


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