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althusser.tex
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althusser.tex
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\documentclass{scrartcl}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{patterns} %for hatching
\usetikzlibrary{calc} %for centerarc
\def\centerarc[#1](#2)(#3:#4:#5)% Syntax: [draw options] (center) (initial angle:final angle:radius)
{ \draw[#1] ($(#2)+({#5*cos(#3)},{#5*sin(#3)})$) arc (#3:#4:#5); }
\begin{document}
%from Althusser - Philosophy and the Spontaneous Philosophy of the Scientists, p. 164
% \begin{figure}
% \centering
%\hspace{1.25cm}
\begin{tikzpicture}[>=stealth,ultra thick]
%circles
\draw (0,0) circle (2cm);
\draw (-2.5,0) circle (1.5cm);
\draw (-5,0) circle (1.5cm);
%black dots
\filldraw (0,0) circle (3pt);
\filldraw (-2.5,0) circle (3pt);
\filldraw (-5,0) circle (3pt);
%
\filldraw (2.5,0.15) circle (2.5pt);
\filldraw (5.3,-0.15) circle (2.5pt);
%horizontal arrows
\draw[->] (0,0)--(-1.75,0); %rightmost
\draw[->] (-2.5,0)--(-3.35,0); %center
\draw[->] (-5,0)--(-4.15,0); %leftmost
%
\draw[->] (2.5,0.15)--(3.5,0.15); %N1 = Nucleus 1
\draw[->] (5.3,-0.15)--(3.55,-0.15); %N2 = Nucleus 2
%vertical arrows
\draw[->] (0,-2.6)--(0,-2.1); %WV = World-View
\draw[->] (-2.5,-2.6)--(-2.5,-1.6); %\Phi = Philosophy
\draw[->] (-3.75,-2.6)--(-3.75,-1.1); %SPS = Spontaneous Philosophy of the Scientist
\draw[->] (-5,-2.6)--(-5,-1.6); %S = Science
%labels
\node at (-5.5,0) {{\large N1}};
\node at (0.5,0) {{\large N2}};
%
\node at (2.95,0.45) {{\large N1}};
\node at (4.45,-0.45) {{\large N2}};
%
\node at (0,-2.9) {WV};
\node at (-2.5,-2.9) {{\Large $\Phi$}};
\node at (-3.75,-2.9){SPS};
\node at (-5,-2.9) {S};
%hatched intersection
\clip (-2.5,0) circle (1.5cm); %keep only what is inside center circle
\draw[pattern=north east lines, pattern color=black] (-5,0) circle (1.5cm); %left circle
%code via: http://users.ju.edu/hduong/math220/venn_diagrams.pdf
\end{tikzpicture}
% \caption{Representing the existence of \textit{two irradiating nuclei}}
% \end{figure}
\vspace{1.5cm}
%l'avenir dure longtemps / the future lasts a long time
%Note: on book covers, Althusser is standing in front of the rightward cap
%I am referring to a mysterious drawing of it, contained on the following pages:
%http://www.faculty.umb.edu/gary_zabel/Courses/Spinoza/Texts/Radical%20Spinoza.htm
%https://dialnet.unirioja.es/descarga/articulo/2723426.pdf (instant download)
%
\begin{tikzpicture}[ultra thick]
%vertical lines
\draw (0,4)--(0,-8);
\draw (-0.15,-0.22)--(-0.15,-8.1);
\draw (0,-8)--(-0.15,-8.1);
\draw (0.5,-3) circle (2);
%upper-right
\draw (0,0)--(1.5,-1.25); %diagonal (rightward) from origin
\draw (0,0.5)--(1.45,-0.75);
\draw (0,0.85)--(1.4,-0.4);
\draw (1.5,-1.25)--(1,2.85)--(0,4); %rightward border
%upper spiral
\draw (0.015,4) arc (110:190:1.9cm and 1.6cm) -- (0,0);
\centerarc[](-0.625,2.5)(200:360:0.625) %top spiral
\centerarc[](-0.58,2.5)(-45:180:0.59)
\centerarc[](-0.72,2.55)(185:360:0.45)
\centerarc[line cap=round](-0.55,2.5)(0:190:0.28)
%spiral looks weird, but it's weird in the original -- not sure how to fix
%NE--SW diagonals
%\draw (0,0)--(-4.9,-8); %diagonal (leftward) from origin; (-4.6,-7.5)
\draw (0,0)--(-4.3,-7); %shorter line that merges into spiral
\draw (-0.4,0.78)--(-5.3,-7.22);
\draw (-0.9,1.6)--(-5.8,-6.6);
\draw (-5.3,-7.22)--(-5.8,-6.6);
%SE--NW diagonals
\draw (-0.15,-8.10)--(-4.00,-3.5); %bottom
\draw (-0.15,-7.75)--(-3.85,-3.35);
\draw (-0.15,-7.40)--(-3.75,-3.12);
%leftward arc
\draw (-4.00,-3.5) arc (260:150:4cm and 4cm);
%northeast cap
\draw (-5,3.25)--(-6.5,5)--(-8,4)--(-6.75,2.4); %cap
\draw (-7.25,4.5)--(-6.5,3.55); %center line
\draw[rounded corners=8pt] (0,4)--(-2.25,3.25)--(-5,3.25)--(-5.5,3.26)--(-6.5,3.55);
\draw (-6.5,3.55) to[bend left] (-6.8,2.38);
\draw[rounded corners=8pt] (-5,3.25)--(-5.15,2.5)--(-5.7,2.6)--(-6.2,1.9)--(-6.75,2.4);
%bottom right
\draw (0,-8) to[bend left] (3,-7.4); %crescent
\draw[rounded corners=8pt] (0,-8) to[bend right] (4.9,-5.5) -- (5,-5);
\draw (5,-5)--(6.5,-5)--(6.5,-3.5)--(4.5,-3.5) to[bend right] (2,-1.7);
\draw (6.5,-4.25)--(5.5,-4.25); %center line
%
\draw (5.5,-4.25) arc (0:60:0.35cm and 0.25cm) to[bend left] (4.5,-3.5);
\draw (5.5,-4.25) arc (0:-30:0.35cm and 0.25cm) -- (5,-5); %try to round this a bit
%
\draw[rounded corners=4pt] (5,-5)--(4.6,-4.85) to[bend left] (4.5,-3.5); %bottom of cap
%bottom left
\draw[rounded corners=4pt] (-0.15,-8.1) arc (317:210:3cm and 1.85cm) to[bend right] (-5.3,-7.22);
\centerarc[](-3.43,-7.5)(145:360:1) %bottom spiral
\centerarc[](-3.18,-7.5)(0:180:0.75)
\centerarc[](-3.43,-7.5)(180:360:0.5)
\centerarc[line cap=round](-3.18,-7.5)(0:180:0.25)
%\node[circle,draw=red,fill=red,inner sep=0pt,minimum size=6pt] at (0,0) {}; %origin
%\draw[help lines] (-9,-10) grid (7,6);
\end{tikzpicture}
\end{document}