op_eye_ifs.gif (GIF Image, 997x997 pixels) - Scaled (91%)

• To: mathgroup at smc.vnet.net
• Subject: [mg101504] op_eye_ifs.gif (GIF Image, 997x997 pixels) - Scaled (91%)
• From: Roger Bagula <rlbagula at sbcglobal.net>
• Date: Thu, 9 Jul 2009 01:53:45 -0400 (EDT)
• References: <h2fe37\$ppu\$1@smc.vnet.net>

```http://www.geocities.com/rlbagulatftn/op_eye_ifs.gif
Another of the nested ellipse types  that I found yesterday.
A very simple op art type tiling of a circle:
Clear[f, dlst, pt, cr, ptlst, x, y]
dlst = Table[ Random[Integer, {1, 2}], {n, 250000}];
f[1, {x_, y_}] := N[{-x/2 - y/2, x/2 - y/2 + 7/24}];
f[2, {x_, y_}] := N[ {2*x*y/(x2 + y2) , (x2 - y2)/(y2 + x2)}];
pt = {0.5, 0.75};
cr[n_] := If[n - 1 == 0, RGBColor[0, 0, 1], If[n - 2 ==
0, RGBColor[0, 0, 0], If[n - 3 == 0, RGBColor[1, 0, 0], RGBColor[0, 1, 0]]]]
ptlst = Table[{cr[dlst[[j]]], Point[pt = f[dlst[[j]], Sequence[pt]]]},
{j, Length[dlst]}];
Show[Graphics[Join[{PointSize[.001]}, ptlst]], AspectRatio -> Automatic,
PlotRange -> All]

```

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