"Tek" <tek### [at] evilsuperbraincom> wrote:
> I hope you don't mind, but your post inspired me to try this in an entirely
> different way: Instead of placing spray particles through a mask, I just draw
> the mask as an object pigment with some turbulence to create the spray effect.
>
> Obviously this is far less realistic, but it's very quick to trace.
>
> Here's the code in case you want to give it a try:
> pigment {
>  object {
>   union {
>    sphere_sweep {
>     cubic_spline
>     5,
>     <-1,1>, .1,
>     <-.5,0>, .2,
>     // move away from the surface to thin out the spray
>     <1,0,-.1>, .1,
>     <2,1,-.2>, .1,
>     <2,2,-.3>, .0
>    }
>    difference {
>     cylinder { -z, z, 1 }
>     cylinder { -z, z, .7 }
>     #for ( a, 0, 360-45, 45 )
>      box { -z, <.15,1,1> translate -x*.7 rotate z*a }
>     #end
>    }
>   }
>   rgb 1, rgb <1,0,1>
>  }
>  #local noiseScale = .004;
>  scale 1/noiseScale
>  warp { turbulence .1/noiseScale octaves 2 lambda 4 }
>  scale noiseScale
> }
>
> --
> Tek
> http://evilsuperbrain.com

of course, I don't mind.  I'm only doing it this way because I can't use a
pigment... (see my post in p.general for details)

Regards,
A.D.B.

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