From 2e19c2d71238e6f38bd56c3ddaf08a384aa2e2b8 Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Date: Sat, 7 Oct 2023 16:07:43 +0200
Subject: [PATCH] tools/zep_dispatch: topogen: place first node at origin

---
 dist/tools/zep_dispatch/topogen.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dist/tools/zep_dispatch/topogen.c b/dist/tools/zep_dispatch/topogen.c
index 293624ed6e..171888dfd7 100644
--- a/dist/tools/zep_dispatch/topogen.c
+++ b/dist/tools/zep_dispatch/topogen.c
@@ -113,6 +113,12 @@ static void world_gen(struct world *w, unsigned num_nodes,
         node_generate(&w->nodes[i], w, random_range(range - var, range + var), i);
         node_name(&w->nodes[i], i);
     }
+
+    if (!w->grid) {
+        /* place first node at origin */
+        w->nodes[0].x = 0;
+        w->nodes[0].y = 0;
+    }
 }
 
 static unsigned _color(const struct node *n, unsigned base)