From 097f244236b682cc77c6ecf25be4150091d8daf9 Mon Sep 17 00:00:00 2001 From: Norbert Preining Date: Sun, 2 Oct 2022 03:04:14 +0000 Subject: CTAN sync 202210020304 --- info/mathtrip/src/EscherPage10.tex | 68 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 info/mathtrip/src/EscherPage10.tex (limited to 'info/mathtrip/src/EscherPage10.tex') diff --git a/info/mathtrip/src/EscherPage10.tex b/info/mathtrip/src/EscherPage10.tex new file mode 100644 index 0000000000..46d28c18f2 --- /dev/null +++ b/info/mathtrip/src/EscherPage10.tex @@ -0,0 +1,68 @@ +%This command draw either the escher knot (the original image) +%or the escher impossible brick (the new one). +% +%The Macro use the global (to the page 10) toggle "OriginalImage" +% +%The macro has one parameter: +% 1) The size to use to typeset the content +\newcommand\TTenDisplayImage[1]{% + \parbox[t]{#1}{% + \iftoggle{OriginalImage}{% + \vfill + \iftoggle{DVIOutput}{% + \centerline{\includegraphics[viewport=0 0 135 125]{escher.ps}}% + }{% + \centerline{\includegraphics[viewport=0 0 135 125]{escher.pdf}}% + }% + }{% + % Author: Julien Cretel + % Date: 24/02/2013 + % + %The code was published here: + %http://www.texample.net/tikz/examples/escher-brick-penrose-triangle/ + % + \savebox\ImpossibleBrick{% + \begin{tikzpicture}[scale=4, line join=bevel] + + % \a and \b are two macros defining characteristic + % dimensions of the impossible brick. + \pgfmathsetmacro{\a}{0.18} + \pgfmathsetmacro{\b}{1.37} + + \tikzset{% + apply style/.code={\tikzset{##1}}, + brick_edges/.style={thick,draw=black}, + face_colourA/.style={fill=gray!50}, + face_colourB/.style={fill=gray!25}, + face_colourC/.style={fill=gray!90}, + } + + \foreach \theta/\v/\facestyleone/\facestyletwo in {% + 0/0/{brick_edges,face_colourA}/{brick_edges,face_colourC}, + 180/-\a/{brick_edges,face_colourB}/{brick_edges,face_colourC} + }{ + \begin{scope}[rotate=\theta,shift={(\v,0)}] + \draw[apply style/.expand once=\facestyleone] + ({-.5*\b},{1.5*\a}) -- + ++(\b,0) -- + ++(-\a,-\a) -- + ++({-\b+2*\a},0) -- + ++(0,-{2*\a}) -- + ++(\b,0) -- + ++(-\a,-\a) -- + ++(-\b,0) -- + cycle; + \draw[apply style/.expand once=\facestyletwo] + ({.5*\b},{1.5*\a}) -- + ++(0,{-2*\a}) -- + ++(-\a,0) -- + ++(0,\a) -- + cycle; + \end{scope} + } + \end{tikzpicture}} + \par + \centerline{\usebox\ImpossibleBrick} + } + } +} -- cgit v1.2.3