TonyB wrote:
> 
> >Just an idea, but it worked to make and column having a round base
> >morphing smoothly to a square top (with y instead of clock).
> 
> Ooohh, I've been looking for a way to do this. Could you please write the
> entire formula for doing this? TIA

	My solution:
y*(x^2+z^2-1)+(1-y)*(max(abs(x), abs(z))-1) threshold 0

	Gilles':
(abs(x)+abs(z))*(1-y)+(x^2+z^2)*y threshold 1

	(From the french ng where this question appeared a few weeks ago)
		Jerome

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