"Mahalis" <don### [at] fakeycom> wrote in message
news:3ba90af9$1@news.povray.org...
> How can you tell what the radius of a blob will be at any particular point
> (is there some sort of formula)? Whenever I try to position a regular
sphere
> touching a blob, it doesn't look anything like I want it to.

    I am sure there is a formula for more complex shapes, but the general
idea is simple. If your radius is 1 and the threshold is 0.5, the surface is
0.5 units from the origin.

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