>> Well, it's 160 splash functions added together. (!)
> 
> Well, as there is no overlapping, no internal bubbles... Why can't you 
> use a heightfield with a high enough resolution and some "smooth" thrown 
> in for good measure. I'd think it would look much the same for this 
> scene. You can use functions for heightfields just as well:
> 
> #declare HF_Detail = 100; //Simulates image-resolution of 100x100
>   height_field{
>     function HF_Detail,HF_Detail{ HF(x,y,z).gray }
>     smooth
>   }

And that does what, exactly? Makes a 100x100 polygon mesh and applies 
some normal trickery to give the illusion of a smooth surface?

Well, you learn something every day. Just out of curiosity, how does a 
heightfield work when used as a "solid" object? Clearly the function 
defines the upper surface, but what about the lower one?

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