From 6842020551cd6ec1baa2f2477f85555d5d1a2544 Mon Sep 17 00:00:00 2001
From: Pavel 'LEdoian' Turinsky <ledoian@matfyz.cz>
Date: Wed, 19 Jul 2023 21:14:27 +0200
Subject: [PATCH] Better edge width

---
 birdvisu/annotations/layout.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/birdvisu/annotations/layout.py b/birdvisu/annotations/layout.py
index db67533..213c985 100644
--- a/birdvisu/annotations/layout.py
+++ b/birdvisu/annotations/layout.py
@@ -225,9 +225,10 @@ class PlaceUnplacedVertices(StyleAnnotator):
 		return result
 
 def _default_width_for_cost(cost):
-	from math import log2
-	if cost <= 2: return 1
-	return int(log2(cost))
+	# Maybe use exponential decay?
+	if cost > 0: return 10/cost
+	# As thin as possible for no-weight edges (e.g. network → router)
+	return 0
 class EdgeWidthByCost(StyleAnnotator):
 	idempotent = True
 	def __init__(self, param):