Am 24.07.2012 14:48, schrieb Chaanakya:
> clipka <ano### [at] anonymousorg> wrote:

>> This gives you a cut-sphere dome over a square base, with the corners
>> "resting" at y=0 and the apex reaching up to y=YHEIGHT (radius of the
>> sphere is computed automatically); alternatively, you can specify the
>> radius of the sphere (apex height is computed automatically), see
>> commented-out lines.
>
> That's almost what I'm looking for, thank you!  Is it possible to have the sides
> smoothly decline to y=0? (Rather than have it sharply decline as it does here?)

Not with a sphere cutout (nor with a paraboloid). I don't know a formula 
off the top of my head that does this.

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