POV-Ray: Newsgroups: povray.documentation.inbuilt: 3.6.3.5 Combining isosurface functions

POV-Ray : Newsgroups : povray.documentation.inbuilt : 3.6.3.5 Combining isosurface functions		Server Time 4 Jan 2025 18:45:34 EST (-0500)

From: ohouapss
Subject: 3.6.3.5 Combining isosurface functions
Date: 21 Apr 2003 21:00:11
Message: <web.3ea4931138e74dd0d12885090@news.povray.org>

I believe that fn_A and fn_B used in general examples should be mentioned to
be nonnegative. Or perhaps abs(fn_) should be used instead.
Otherwise csg simulation is not functional. I suppose that it is not very
important anyways...

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