Merge pull request #81 from kylebarron/one-way

One way arrow on roads

LICENSE.md

@@ -28,6 +28,10 @@ For printed and static maps a similar attribution should be made in a textual de
 
 OSM Liberty is using the [Maki POI icon set](https://github.com/mapbox/maki/blob/master/LICENSE.txt) which is licensed under CC0 1.0 Universal.
 
+The right arrow was derived from [Wikipedia][wiki_arrow] which is in the public domain.
+
+[wiki_arrow]: https://commons.wikimedia.org/wiki/File:Arrowright.svg
+
 ## Fonts
 
 OSM Liberty is using the Roboto font family (Copyright 2011 Google).

style.json

@@ -893,6 +893,28 @@
         "line-width": {"base": 1.2, "stops": [[13.5, 0], [14, 2.5], [20, 18]]}
       }
     },
+    {
+      "id": "road_one_way_arrow",
+      "type": "symbol",
+      "source": "openmaptiles",
+      "source-layer": "transportation",
+      "minzoom": 15,
+      "filter": ["==", "oneway", 1],
+      "layout": {"icon-image": "arrow", "symbol-placement": "line"}
+    },
+    {
+      "id": "road_one_way_arrow_opposite",
+      "type": "symbol",
+      "source": "openmaptiles",
+      "source-layer": "transportation",
+      "minzoom": 15,
+      "filter": ["==", "oneway", -1],
+      "layout": {
+        "icon-image": "arrow",
+        "symbol-placement": "line",
+        "icon-rotate": 180
+      }
+    },
     {
       "id": "bridge_motorway_link_casing",
       "type": "line",

svgs/svgs_not_in_iconset/arrow.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="20" height="7" viewBox="0 0 80 29">
+    <path d="m61,15H11v-1h49m0-2 9,2.5-9,2.5"/>
+</svg>