From: Costa Shulyupin <constantine.shulyupin@gmail.com>
Date: Thu, 6 Oct 2022 18:57:02 +0000 (+0300)
Subject: doxygen for twopigen
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=919e2e1751b7c9b3192f9b44de3bc8438a19c4ee;p=graphviz

doxygen for twopigen
---

diff --git a/lib/twopigen/twopiinit.c b/lib/twopigen/twopiinit.c
index c00895b1c..88a08aed6 100644
--- a/lib/twopigen/twopiinit.c
+++ b/lib/twopigen/twopiinit.c
@@ -192,3 +192,15 @@ void twopi_cleanup(graph_t * g)
     }
     twopi_cleanup_graph(g);
 }
+
+/**
+ * @dir lib/twopigen
+ * @brief radial layout engine, API twopigen/circle.h
+ * @ingroup engines
+ *
+ * Twopi means 2π.
+ *
+ * [Twopi layout user manual](https://graphviz.org/docs/layouts/twopi/)
+ *
+ * Other @ref engines
+ */