POV-Ray: Newsgroups: povray.advanced-users: Square roots of negative numbers in isosurfaces?: Re: Square roots of negative numbers in isosurfaces?

POV-Ray : Newsgroups : povray.advanced-users : Square roots of negative numbers in isosurfaces? : Re: Square roots of negative numbers in isosurfaces?		Server Time 31 Oct 2025 03:11:24 EDT (-0400)

From: Greg M Johnson
Date: 12 Jan 2000 08:15:51
Message: <387C7DB8.95F16859@my-dejanews.com>

Okay, how about:

x^a =  sign(x)^int(a) * pow(abs(x), a)      ?

Povray is doing SOMETHING, as it gives me a picture in a mathematically undefined
region of space!  It was driving me crazy to figure out what it was doing  . . .

Ron Parker wrote:

> Well, there's that little problem of x^2+y^2+z^2-1 (threshold 0) not being a
> sphere anymore, but other than that...
>
> --
> These are my opinions.  I do NOT speak for the POV-Team.
> The superpatch: http://www2.fwi.com/~parkerr/superpatch/
> My other stuff: http://www2.fwi.com/~parkerr/traces.html

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