S
>> #declare fn_A =
>>    function {
>>      pow(x/Scene_scale+1/2,2) +
>>      pow(y/Scene_scale+1/2,2) +
>>      pow(z/Scene_scale+1/2,2) -
>>      1 };
>>
>> etc?
> 
> Could you please explain why?
> 
> -Mike
> 

So the function "spreads out" as the multiplication factor changes, but that the value
at a given scaled value of (x,y,z) doesn't change.

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