From 1017a2614c1708bac638fec5108b5dc83729f760 Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Tue, 2 Apr 2019 20:36:52 +0200
Subject: some new stuff

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+    December 2017
+# Calculating Convex and Concave Hulls
+
+Experimenting with Convex and Concave Hulls with Haskell
+
+## Concave
+
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+SVG generated via Graham Scan
+
+## Convex
+![](alpha.png){}\
+Alpha Shapes and Concave Hulls obtained from the delaunay triangulation
+
+## Ref
+
+* STOC '83 Proceedings of the fifteenth annual ACM symposium on Theory of computing / Primitives for the manipulation of general subdivisions and the computation of Voronoi diagrams
+
+## Git
+* <https://gitweb.softwarefools.com/?p=miguel/haskell.git;a=tree;f=hulls>
-- 
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