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34 lines
1,007 B
TeX
34 lines
1,007 B
TeX
\documentclass{article}
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\usepackage[pdftex,active,tightpage]{preview}
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\setlength\PreviewBorder{2mm}
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\usepackage{tikz}
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\usetikzlibrary{arrows,positioning, calc}
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\tikzstyle{vertex}=[draw,fill=black!15,circle,minimum size=20pt,inner sep=0pt]
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\tikzstyle{selected edge} = [draw,line width=5pt,-,red!50]
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\begin{document}
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\pgfdeclarelayer{background}
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\pgfsetlayers{background,main}
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\begin{preview}
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\begin{tikzpicture} [scale=1.2]
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\node (a)[vertex] at (0,2) {a};
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\node (b)[vertex] at (1,1) {b};
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\node (c)[vertex] at (3,2) {c};
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\node (d)[vertex] at (4,1) {d};
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\node (e)[vertex] at (2,0) {e};
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\node (f)[vertex] at (1,3) {f};
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\node (g)[vertex] at (5,3) {g};
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\node (h)[vertex] at (0,1) {h};
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\foreach \from/\to in {a/f,f/g,h/b,b/c,c/d,d/e,e/b,f/c}
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\draw (\from) -- (\to);
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\begin{pgfonlayer}{background}
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\foreach \from/\to in {a/f,f/c,c/d,d/e,e/b,b/h}
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\draw (\from.center) edge[selected edge] (\to.center);
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\end{pgfonlayer}
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\end{tikzpicture}
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\end{preview}
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\end{document}
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