POV-Ray: Newsgroups: povray.general: Creating a ripple effect: Re: Creating a ripple effect

POV-Ray : Newsgroups : povray.general : Creating a ripple effect : Re: Creating a ripple effect		Server Time 4 Aug 2024 20:15:26 EDT (-0400)

From: DL
Date: 26 Feb 2003 01:21:53
Message: <3e5c5d01$1@news.povray.org>

>    r=sqrt(pow(x-center_x,2)+pow(y-center_y,2)+pow(r_0,2))

What is r_0?