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Create rolling_circle.tex

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ulaulaman 2019-11-21 01:52:23 +01:00 committed by GitHub
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\documentclass{standalone}
%
\usepackage{tikz}
\usetikzlibrary{bending,arrows.meta}
\usepackage{tkz-euclide}
\usetkzobj{all}
\usepackage{xcolor}
\definecolor{earth}{HTML}{0089FA}
%
\title{Rolling circle squares itself}
\begin{document}
\begin{tikzpicture}[>={[inset=0,angle'=27]Stealth}]
\begin{scope}[decoration={markings,mark=at position 0 with {\arrow[scale=2]{<}};}]
\tkzDefPoint(0,0){A} \tkzDefPoint(0,5){B} \tkzDefPoint(0,5.5){f}
\tkzCalcLength[cm](A,B) \tkzGetLength{rAB}
\tkzDrawCircle[R,ultra thick](A,\rAB cm)
\tkzDrawArc[rotate,postaction={decorate},color=black,ultra thick](A,f)(-30)
\tkzDrawPoints[fill=black](B)
\tkzDrawSegment[style=dashed,ultra thick](A,B)
%
\tkzInterLC(A,B)(A,B) \tkzGetPoints{D}{E}
%
\tkzDefLine[orthogonal=through A](B,A) \tkzGetPoint{F}
\tkzInterLC(A,F)(A,B) \tkzGetPoints{G}{H}
\tkzDrawSegment[style=dashed,ultra thick](A,G)
%translation
\pgfmathsetmacro{\tkzCirc}{3.14 * \rAB}
\tkzDefPoint(\tkzCirc,0){A'}
\tkzDefPointsBy[translation= from A to A'](B){B1}
\tkzDefPointBy[rotation= center A' angle -180](B1)
\tkzGetPoint{B2}
\tkzCalcLength[cm](A',B2) \tkzGetLength{rABt}
\tkzDrawCircle[R,ultra thick](A',\rABt cm)
\tkzDrawPoints[fill=black](B2)
\tkzDrawSegment[style=dashed,ultra thick](A',B2)
%
\tkzDefPointsBy[translation= from A to A'](G){G1}
\tkzDefPointBy[rotation= center A' angle -180](G1)
\tkzGetPoint{G2}
\tkzDrawSegment[style=dashed,ultra thick](A',G2)
%
\tkzDrawLine[color=earth,add = 0.4 and 0.7,ultra thick](D,B2)
%
\tkzTangent[at=G2](A') \tkzGetPoint{t}
\tkzInterLL(G2,t)(D,B2) \tkzGetPoint{I}
\tkzDrawSegment[style=dashed,ultra thick](G2,I)
%
\tkzDefMidPoint(D,I) \tkzGetPoint{O}
\tkzDrawArc[style=dashed,color=black,ultra thick](O,D)(I)
\tkzInterLC(A',B2)(O,I) \tkzGetPoints{a}{b}
\tkzDefSquare(B2,b) \tkzGetPoints{c}{d}
\tkzDrawPolygon[ultra thick](B2,b,c,d)
\end{scope}
\end{tikzpicture}
\end{document}