sinosidal circle equation

*To*: mathgroup at smc.vnet.net*Subject*: [mg29864] sinosidal circle equation*From*: "Dr. Jasjit Suri" <jsuri at mr.marconimed.com>*Date*: Sat, 14 Jul 2001 01:36:54 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Hi, I generated a flower image like this: d = sqrt((x0-x)^2 + (y-y0)^2) r = Constant*[cos(angle)]^2......................imp. if (d <= r) { HIGH value} else{LOW value} this gives me a flower image. i would like to generate a smooth sine wave pattern around the circle..... The wavy circle should go in and out.. Is there a std. equation of this curve ? thanks. jas