Re: [math-fun] More oval pix up

rwg>> I'm tempted to resort to a double prodigal(qx,qy). wfl>Come again? prodigal:integral :: geometric mean:arithmetic mean. prodigal :=e^integral(log). I was trying to create a surface e^-f^2, 1 on the curve, dropping sharply to 0, where f is 0 on the curve by virtue of being some prodigal of distance from it. But this was stupid. prodigal(distance from curve to pt (x,y)) is also stupid, but less. I think I see a simple way to best-approximate the four-point egg with (a+b cos t)^2+(c+d cos 2t)^2. --rwg