"Bill Pragnell" <bil### [at] hotmailcom> wrote:
> William F Pokorny <ano### [at] anonymousorg> wrote:
> > On turbulence, a thought I've had is it might be useful to have a
> > generic black hole warp like mechanism (shape defined intensity control)
> > to locally fade turbulence in an out. Something more controllable than
> > applying turbulence to the whole pattern(1).
>
> Yes this would be useful.
>
> > (1) - This is doable with functions, but not all that easy to set up.
>
> I can't immediately see how to do that, but I'll take your word for it!
>
> Bill

I did that with the spiral / vortex warp.  You interpolate between the max
radius of the effect being zero to the center being 1, and use that as a
strength multiplier for the turbulence function.

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