POV-Ray : Newsgroups : povray.advanced-users : Square roots of negative numbers in isosurfaces? : Re: Square roots of negative numbers in isosurfaces? Server Time
2 Nov 2024 07:27:32 EDT (-0400)
  Re: Square roots of negative numbers in isosurfaces?  
From: David Fontaine
Date: 13 Jan 2000 23:41:23
Message: <387EA67E.7CE91E84@faricy.net>
What I think POV *should* do is not include these areas in the graph. Say I
want to graph a hemisphere on my TI-89, I do x^2+y^2+z^2=1, z^2=-x^2-y^2+1,
z=sqrt(1-x^2-y^2), and graph it and it gives me my hemisphere, and the area
*outside* the hemisphere is ignored (not rendered) because it is sqrt(neg).
Because if people want it to work the other way they can always just make
it sqrt(abs(x)) instead of sqrt(x).

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Homepage: http://www.faricy.net/~davidf/
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