On 4/17/20 11:09 AM, Cousin Ricky wrote:
> On 20200416 8:38 AM (-4), William F Pokorny wrote:
>>
>> I didn't post details, but I've played with alternate methods to code, 
>> f_sphere, for example. Something to avoid the sqrt() because it's 
>> expensive CPU wise. The other forms have higher gradients and we 
>> always lose big in isosurface time. In other words the gradient is 
>> king with our current solver.
> 
> I have found non-linear gradients to be more expensive than sqrt() 

> with RE_fn_Blob2() in the Object Collection), I will use a sqrt() 

> that the contrast would be even greater with native sqrt() calls, since 
> they would not have to go through an interpreter.

Yes, think so. Your post a reminder I should review the object 
collection isosurface work. Been years since I played with those files much.

Bill P.

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