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Radio waves tail effect
Hi All,
I’m trying to achieve this effect

As the line follows the path, the trailing edge leaves behind dots that are registered to the background.
I’ve managed to get this far using stroke and ‘radio waves’.
Close but no cigar.
The problem is that ‘radio waves’ can’t operate in a time-reversed fashion (circles starting wide and collapsing to a central point).
Anyone know how to achieve an effect where the trailing edge of the line devolves into circles that are registered to the BG and decrease in size to nothing over time?
Many Thanks
Markus