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From: =?UTF-8?q?Andreas=20M=C3=BCller?= <andreas.mueller@ost.ch>
Date: Fri, 8 Jan 2021 13:36:54 +0100
Subject: =?UTF-8?q?zwei=20Aufgaben=20hinzugef=C3=BCegt?=
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---
 cover/matrix.tex | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 cover/matrix.tex

(limited to 'cover/matrix.tex')

diff --git a/cover/matrix.tex b/cover/matrix.tex
new file mode 100644
index 0000000..338435b
--- /dev/null
+++ b/cover/matrix.tex
@@ -0,0 +1,50 @@
+%
+% matrix.tex -- Hintergrund für Bucheinband
+%
+% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
+%
+\documentclass[tikz]{standalone}
+\usepackage{amsmath}
+\usepackage{times}
+\usepackage{txfonts}
+\usepackage{pgfplots}
+\usepackage{csvsimple}
+\usetikzlibrary{arrows,intersections,math}
+\begin{document}
+\def\skala{1}
+\begin{tikzpicture}[>=latex,thick,scale=\skala]
+
+\def\w{30}
+\def\h{10}
+\def\l{7}
+\def\s{0.155}
+\def\vs{0.245}
+
+\fill[color=blue] (0,{-0.3*\h}) rectangle (\w,{2*\h});
+
+\def\verticalline#1{
+	\pgfmathparse{int(random(0,\h/\vs))*\vs}
+	\xdef\initialheight{\pgfmathresult}
+	\foreach \y in {0,\vs,...,\l}{
+		\pgfmathparse{100*(1-(sqrt(\y/\l)))}
+		\xdef\farbe{\pgfmathresult}
+		\pgfmathparse{int(random(0,9))}
+		\xdef\zeichen{\pgfmathresult}
+		\node[color=white!\farbe!blue,opacity={(1-\y/\l)}]
+		%\node[color=white!\farbe!blue]
+			at (#1,{\initialheight+\y}) {\tt\zeichen};
+	}
+}
+
+\begin{scope}
+\clip (0,{-0.3*\h}) rectangle (\w,{2*\h});
+
+\foreach \x in {0,\s,...,\w}{
+	\verticalline{\x}
+}
+
+\end{scope}
+
+\end{tikzpicture}
+\end{document}
+
-- 
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