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You commented out the use of the hyperref package, thus causing the \hypersetup command not to be recognized. Get rid of the %s in front of lines 32--37. See the documentation for the hyperref package regarding setting colors for the various link types.

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This is maybe a start. \documentclass[tikz,border=3mm]{standalone} \usetikzlibrary{patterns} \begin{document} \begin{tikzpicture}[ring at/.style={insert path={ (#1,0) circle[y radius={sqrt(R*R-#1*#1)},x radius={a*sqrt(R*R-#1*#1)}]}}, cone at/.style={ring at=#1,insert path={(#1,{sqrt(R*R-#1*#1)}) -- (0,0) -- (#1,-{sqrt(R*R-#1*#1)})}}, ...

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