"Tek" <tek### [at] evilsuperbraincom> schreef in bericht 
news:4c3b8dcb$1@news.povray.org...
> Doh! Sorry yeah they're macros of mine:
>
> #macro Flip() colour_map { [0 rgb 1][1 rgb 0] } #end
>
> #declare SphereAngleDistribute = function(x) { asin(x)/(pi/2) }
> #macro SphereRand(Seed) vrotate( z, 
> <90*SphereAngleDistribute(rand(Seed)*2-1),360*rand(Seed)> ) #end
>

<grin> Thank you indeed!

Thomas

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