Jorge Stolfi <sto### [at] icunicampbr> wrote:
> Of course, simply changing N in the formula will shift the blob's
> surface inwards and hence break old POV sources. For example, in order
> to obtain an N=4 superblob with approximately the same size shape as
> the ordinary blob, it was necessary to set the influence radius R to
> 2.1 (instead of 1.8) and lower the threshold to 0.057552 (instead of
> 0.093364). To implement this fix in a back-compatibile way,
> one could add to the blob primitive an optional parameter
> "order N", defaulting to "order 2".

  I wonder if POV-Ray couldn't transparently calculate the radius and
threshold values from the user-specified ones so as to match the current
blobs.

-- 
                                                          - Warp

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