[PD] [Gem] delay line for geos?

[Peter Todd]

>>
>> I would like to draw the trail of a geo in motion, how can I do this? I 
>> am
>> thinking of delay the gemlist to the specified amount but having no luck 
>> in
>> doing so.
>
> I have wondered a bit about individual geos leaving trails, and delay line 
> type things, but I haven't reached much conclussion (or done much 
> experimentation).  You could use a table to store the previous frames 
> data, and have diminishing alpha for older elements, but again it would be 
> far from perfect.  Could be workable, though.  I might see what I can hack 
> together this afternoon, otherwise it won't be for a few days.  As far as 
> a generalised 'delay line' goes, I think this could turn out to be a good 
> approach.
>

Here's a start. 
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