From b701fcf114b56a9cb2e6c04c6b6e5f189a259a81 Mon Sep 17 00:00:00 2001
From: Dustin Carlino <dabreegster@gmail.com>
Date: Mon, 6 Jul 2020 07:28:41 -0700
Subject: [PATCH] also dedupe building points coming from a relation, for #130

---
 convert_osm/src/osm_reader.rs   |  6 ++++--
 data/other_polygons/krakow.poly | 10 ++++++++++
 2 files changed, 14 insertions(+), 2 deletions(-)
 create mode 100644 data/other_polygons/krakow.poly

diff --git a/convert_osm/src/osm_reader.rs b/convert_osm/src/osm_reader.rs
index f632ed69de..e7ca91bf05 100644
--- a/convert_osm/src/osm_reader.rs
+++ b/convert_osm/src/osm_reader.rs
@@ -262,13 +262,15 @@ pub fn extract_osm(
                 .next()
                 .and_then(|id| id_to_way.get(&id))
             {
-                if pts.len() < 3 {
+                let mut deduped = pts.clone();
+                deduped.dedup();
+                if deduped.len() < 3 {
                     continue;
                 }
                 map.buildings.insert(
                     OriginalBuilding { osm_way_id: rel.id },
                     RawBuilding {
-                        polygon: Polygon::new(pts),
+                        polygon: Polygon::new(&deduped),
                         public_garage_name: None,
                         num_parking_spots: 0,
                         amenities: get_bldg_amenities(&tags),
diff --git a/data/other_polygons/krakow.poly b/data/other_polygons/krakow.poly
new file mode 100644
index 0000000000..81b1c6649b
--- /dev/null
+++ b/data/other_polygons/krakow.poly
@@ -0,0 +1,10 @@
+krakow
+1
+     19.91220474243164    50.075099742705696
+     19.926795959472656    50.039722339360004
+     19.975547790527344    50.04810065472004
+     19.974689483642578    50.07587092194771
+     19.940528869628906    50.07917583535689
+     19.91220474243164    50.075099742705696
+END
+END