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42 lines
1.8 KiB
TeX
42 lines
1.8 KiB
TeX
% thanks for the template:
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% http://www.texample.net/tikz/examples/simple-flow-chart/
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\documentclass{standalone}
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\usepackage{gensymb}
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%\usepackage[pdftex,active,tightpage]{preview}
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%\setlength\PreviewBorder{2mm}
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\usepackage[utf8]{inputenc} % this is needed for umlauts
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\usepackage[ngerman]{babel} % this is needed for umlauts
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\usepackage[T1]{fontenc} % this is needed for correct output of umlauts in pdf
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\usepackage{tikz}
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\usetikzlibrary{shapes,arrows}
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\begin{document}
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%\begin{preview}
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% Define block styles
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\tikzstyle{decision} = [diamond, draw, fill=blue!20,
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text width=4.5em, text badly centered, node distance=3cm, inner sep=0pt]
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\tikzstyle{block} = [rectangle, draw, fill=blue!20,
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text width=5em, text centered, rounded corners, minimum height=4em]
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\tikzstyle{line} = [draw, -latex']
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\begin{tikzpicture}[auto]
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% Place nodes
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\node [block] (init) {start};
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\node [decision, below of=init] (boundingBoxes) {do bounding boxes intersect?};
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\node [decision, right of=boundingBoxes, node distance=4cm] (lineAIntersectLineB) {does line a intersect line segment b?};
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\node [decision, right of=lineAIntersectLineB, node distance=4.7cm] (lineBIntersectLineA) {does line b intersect line segment a?};
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\node [block, right of=lineBIntersectLineA, node distance=4.7cm] (yes) {yes};
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\node [block, below of=boundingBoxes, node distance=3cm] (no) {no};
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% Draw edges
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\path [line] (init) -- (boundingBoxes);
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\path [line] (boundingBoxes) -- node {no}(no);
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\path [line] (boundingBoxes) -- node {yes}(lineAIntersectLineB);
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\path [line] (lineAIntersectLineB) |- node {no}(no);
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\path [line] (lineAIntersectLineB) -- node {yes}(lineBIntersectLineA);
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\path [line] (lineBIntersectLineA) |- node {no}(no);
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\path [line] (lineBIntersectLineA) -- node {yes}(yes);
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\end{tikzpicture}
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%\end{preview}
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\end{document}
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