From ae59d704d20690737fa77651d5c4019588828c2b Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Fri, 1 Mar 2019 22:05:50 +0100
Subject: Improve restriction figure

---
 img/restriction_base.tikz | 41 +++++++++++++++++++----------------------
 1 file changed, 19 insertions(+), 22 deletions(-)

diff --git a/img/restriction_base.tikz b/img/restriction_base.tikz
index 9c2c132..f35c8d4 100644
--- a/img/restriction_base.tikz
+++ b/img/restriction_base.tikz
@@ -1,23 +1,23 @@
 \begin{tikzpicture}[
-	scale=2.0,
-	coarse/.style={circle,draw=black,very thick,inner sep=4},
+	scale=1.25,
+	coarse/.style={circle,draw=gray,thick,inner sep=4},
 	fine/.style={cross out,draw=gray,inner sep=2},
 	usedArrow/.style={very thick,->,>=stealth},
-	availableArrow/.style={draw=gray,->,>=stealth}
+	availableArrow/.style={draw=gray,->,>=stealth},
+	arrow/.style={-{Latex[length=2mm]},thick}
 ]
 
-\node[fine] at (0,0){ };
-\node[fine] at (1,0){ };
-\node[fine] at (2,0){ };
+\foreach \x in {-1,...,6}
+	\foreach \y in {-1,...,3} {
+		\node[fine] at (\x,\y){ };
+	};
 
-\node[fine] at (0,1){ };
-\node[fine] at (1,1){ };
-\node[coarse] at (1,1){ };
-\node[fine] at (2,1){ };
+\foreach \x in {-3,-1,1}
+	\foreach \y in {-1,1,3} {
+		\node[coarse,draw=gray] at (\x,\y){ };
+	};
 
-\node[fine] at (0,2){ };
-\node[fine] at (1,2){ };
-\node[fine] at (2,2){ };
+\node[coarse,draw=black,ultra thick] at (1,1){ };
 
 \foreach \x in {0,...,2}
 	\foreach \y in {0,...,2} {
@@ -30,16 +30,13 @@
 		\draw[availableArrow] (\x,\y+0.1) -- (\x,\y+0.3){ };
 	};
 
-\draw[usedArrow] (2.1,2.1) -- (2.3,2.3){ };
-\draw[usedArrow] (2.1,1.1) -- (2.3,1.3){ };
-\draw[usedArrow] (2.1,0.1) -- (2.3,0.3){ };
+\foreach \x in {0,...,2}
+	\foreach \y in {0,...,2} {
+		\draw[usedArrow] (\x+0.1,\y+0.1) -- (\x+0.3,\y+0.3){ };
+	};
 
-\draw[usedArrow] (1.1,2.1) -- (1.3,2.3){ };
-\draw[usedArrow] (1.1,1.1) -- (1.3,1.3){ };
-\draw[usedArrow] (1.1,0.1) -- (1.3,0.3){ };
+\draw[dashed,very thick] (0.6,-1.4) rectangle (1.4,3.4);
+\draw[arrow] (1,4.3) node[right] {Restriktion von fein nach grob, \(\U_{f \to g}\)} -- (1,3.6);
 
-\draw[usedArrow] (0.1,2.1) -- (0.3,2.3){ };
-\draw[usedArrow] (0.1,1.1) -- (0.3,1.3){ };
-\draw[usedArrow] (0.1,0.1) -- (0.3,0.3){ };
 
 \end{tikzpicture}
-- 
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