Merge remote-tracking branch 'upstream/master'

1 files changed, 45 insertions, 0 deletions

diff --git a/buch/chapters/60-gruppen/images/rodriguez.tex b/buch/chapters/60-gruppen/images/rodriguez.tex
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+++ b/buch/chapters/60-gruppen/images/rodriguez.tex
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+%
+% 3dimagetemplate.tex
+%
+% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
+%
+\documentclass[tikz]{standalone}
+\usepackage{times}
+\usepackage{amsmath}
+\usepackage{txfonts}
+\usepackage[utf8]{inputenc}
+\usepackage{graphics}
+\usetikzlibrary{arrows,intersections,math}
+\usepackage{ifthen}
+\begin{document}
+
+\definecolor{darkgreen}{rgb}{0,0.6,0}
+
+\newboolean{showgrid}
+\setboolean{showgrid}{false}
+\def\breite{7}
+\def\hoehe{4}
+
+\begin{tikzpicture}[>=latex,thick]
+
+% Povray Bild
+\node at (0,0) {\includegraphics[width=10cm]{rodriguez.jpg}};
+
+% Gitter
+\ifthenelse{\boolean{showgrid}}{
+\draw[step=0.1,line width=0.1pt] (-\breite,-\hoehe) grid (\breite, \hoehe);
+\draw[step=0.5,line width=0.4pt] (-\breite,-\hoehe) grid (\breite, \hoehe);
+\draw                            (-\breite,-\hoehe) grid (\breite, \hoehe);
+\fill (0,0) circle[radius=0.05];
+}{}
+
+\node[color=blue] at (0.6,3.0)  {$\vec{k}\mathstrut$};
+\node[color=red] at (1.8,-1.0) [below right] {$\vec{x}\mathstrut$};
+\node[color=darkgreen] at (-4.5,1.0) [below left]
+	{$\vec{x}\times\vec{k}\mathstrut$};
+\node[color=yellow] at (1.9,-0.5) [right] {$\vec{x}-(\vec{x}\cdot\vec{k})\vec{k}$};
+
+\end{tikzpicture}
+
+\end{document}
+