map: Add Polyhood support

This actually implements polyhood support for the MAP.

This is not connected to the earlier commit which provides
database support for polyhoods. This patch will work
independent of the earlier one.

Although the KeyXchange does not provide polyhood data so far,
the Monitoring's implementation can already be put in place and
will take up the data as soon as it's there.

Note that since we only provide an additional layer for the
map, the overall footprint of this change is relatively small.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

Tested-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

ffmap/mapnik/hoods_poly.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE Map>
+<Map background-color="transparent" srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
+  <Style name="hoodpoint">
+	<Rule>
+	  <TextSymbolizer face-name="DejaVu Sans Book" size="12" fill="#b200b2" halo-radius="2">[name]</TextSymbolizer>
+	</Rule>
+  </Style>
+  <Style name="hoodborder">
+	<Rule>
+	  <LineSymbolizer stroke-width="3" stroke="#b200b2" stroke-linecap="butt" stroke-dasharray="6, 2" clip="false" />
+	</Rule>
+  </Style>
+  <Layer name="borders" srs="+proj=latlong +ellps=WGS84 +datum=WGS84 +no_defs">
+    <StyleName>hoodborder</StyleName>
+    <Datasource>
+      <Parameter name="type">csv</Parameter>
+      <Parameter name="file">csv/hoods_poly.csv</Parameter>
+    </Datasource>
+  </Layer>
+  <Layer name="points" srs="+proj=latlong +ellps=WGS84 +datum=WGS84 +no_defs">
+    <StyleName>hoodpoint</StyleName>
+    <Datasource>
+      <Parameter name="type">csv</Parameter>
+      <Parameter name="file">csv/hood-points-poly.csv</Parameter>
+    </Datasource>
+  </Layer>
+</Map>

ffmap/mapnik/run.sh

@@ -5,5 +5,6 @@ liteserv.py routers_v2.xml -p 8003 --processes=5 &
 liteserv.py routers_local.xml -p 8004 --processes=5 &
 liteserv.py hoods.xml -p 8001 --processes=5 &
 liteserv.py hoods_v2.xml -p 8002 --processes=5
+liteserv.py hoods_poly.xml -p 8005 --processes=5
 
 killall liteserv.py

ffmap/mapnik/tilestache.cfg

@@ -53,6 +53,16 @@
 			},
 			"metatile": {"buffer": 128},
 			"cache lifespan": 300
+		},
+		"tiles/hoods_poly": {
+			"provider": {
+				"class": "dynmapnik:DynMapnik",
+				"kwargs": {
+					"mapfile": "/usr/share/ffmap/hoods_poly.xml"
+				}
+			},
+			"metatile": {"buffer": 128},
+			"cache lifespan": 300
 		}
 	},
 	"logging": "info"

ffmap/maptools.py

@@ -10,6 +10,7 @@ from ffmap.config import CONFIG
 import math
 import numpy as np
 from scipy.spatial import Voronoi
+import urllib.request, urllib.error, json
 
 EARTH_RADIUS = 6378137.0
 
@@ -259,9 +260,43 @@ def update_mapnik_csv(mysql):
 			hoods.append([x, y])
 		draw_voronoi_lines(csv, hoods)
 
+	# Poly-Hoods
+	with urllib.request.urlopen("http://keyserver.freifunk-franken.de/v2/hoods.php") as url:
+		dbhoodspoly = json.loads(url.read().decode())
+	with open(os.path.join(CONFIG["csv_dir"], "hood-points-poly.csv"), "w", encoding="UTF-8") as csv:
+		csv.write("lng,lat,name\n")
+		for hood in dbhoodspoly:
+			for polygon in hood.get("polygons",()):
+				avlon = 0
+				avlat = 0
+				for p in polygon:
+					avlon += p["lon"]
+					avlat += p["lat"]
+				avlon /= len(polygon)
+				avlat /= len(polygon)
+				csv.write("%f,%f,\"%s\"\n" % (
+					avlon,
+					avlat,
+					hood["name"]
+				))
+
+	with open(os.path.join(CONFIG["csv_dir"], "hoods_poly.csv"), "w") as csv:
+		csv.write("WKT\n")
+		for hood in dbhoodspoly:
+			for polygon in hood.get("polygons",()):
+				oldlon = None
+				oldlat = None
+				for p in polygon:
+					if oldlon and oldlat:
+						csv.write("\"LINESTRING (%f %f,%f %f)\"\n" % (oldlon, oldlat, p["lon"], p["lat"]))
+					oldlon = p["lon"]
+					oldlat = p["lat"]
+				csv.write("\"LINESTRING (%f %f,%f %f)\"\n" % (oldlon, oldlat, polygon[0]["lon"], polygon[0]["lat"]))
+
 	# touch mapnik XML files to trigger tilelite watcher
 	touch("/usr/share/ffmap/hoods.xml")
 	touch("/usr/share/ffmap/hoods_v2.xml")
+	touch("/usr/share/ffmap/hoods_poly.xml")
 	touch("/usr/share/ffmap/routers.xml")
 	touch("/usr/share/ffmap/routers_v2.xml")
 	touch("/usr/share/ffmap/routers_local.xml")

ffmap/web/application.py

@@ -32,6 +32,7 @@ tileurls = {
 	"routers_local": "/tiles/routers_local",
 	"hoods": "/tiles/hoods",
 	"hoods_v2": "/tiles/hoods_v2",
+	"hoods_poly": "/tiles/hoods_poly"
 }
 
 @app.route('/')

ffmap/web/static/js/map.js

@@ -31,6 +31,7 @@ var routers_v2 = new L.TileLayer(tileurls.routers_v2 + '/{z}/{x}/{y}.png', overl
 var routers_local = new L.TileLayer(tileurls.routers_local + '/{z}/{x}/{y}.png', overlay_config);
 var hoods = new L.TileLayer(tileurls.hoods + '/{z}/{x}/{y}.png', overlay_config);
 var hoods_v2 = new L.TileLayer(tileurls.hoods_v2 + '/{z}/{x}/{y}.png', overlay_config);
+var hoods_poly = new L.TileLayer(tileurls.hoods_poly + '/{z}/{x}/{y}.png', overlay_config);
 var popuplayer = new L.TileLayer('');
 layersControl = new L.Control.Layers({
 	"openstreetmap.org": tilesosmorg,
@@ -42,6 +43,7 @@ layersControl = new L.Control.Layers({
 	"Local Routers": routers_local,
 	"Hoods V1": hoods,
 	"Hoods V2": hoods_v2,
+	"Poly-Hoods": hoods_poly,
 	"Position-Popup": popuplayer
 });
 map.addControl(layersControl);
@@ -62,8 +64,14 @@ function update_permalink() {
 		var zoom = map.getZoom();
 		window.history.replaceState({}, document.title,
 			mapurl + '?mapcenter=' + pos.lat.toFixed(5) + ',' + pos.lng.toFixed(5) + ',' + zoom
-			+ '&layers=' + (map.hasLayer(routers)|0) + ',' + (map.hasLayer(routers_v2)|0) + ',' + (map.hasLayer(routers_local)|0) + ','
-			+ (map.hasLayer(hoods)|0) + ',' + (map.hasLayer(hoods_v2)|0) + ',' + (map.hasLayer(popuplayer)|0) );
+			+ '&layers=' + (map.hasLayer(routers)|0) + ','
+			+ (map.hasLayer(routers_v2)|0) + ','
+			+ (map.hasLayer(routers_local)|0) + ','
+			+ (map.hasLayer(hoods)|0) + ','
+			+ (map.hasLayer(hoods_v2)|0) + ','
+			+ (map.hasLayer(hoods_poly)|0) + ','
+			+ (map.hasLayer(popuplayer)|0)
+			);
 	}
 }
 

ffmap/web/templates/map.html

@@ -43,7 +43,8 @@
 				if(getlayers[2]==1) { routers_local.addTo(map); }
 				if(getlayers[3]==1) { hoods.addTo(map); }
 				if(getlayers[4]==1) { hoods_v2.addTo(map); }
-				if(getlayers[5]==1) { popuplayer.addTo(map); }
+				if(getlayers[5]==1) { hoods_poly.addTo(map); }
+				if(getlayers[6]==1) { popuplayer.addTo(map); }
 			} else {
 				initialLayers();
 			}

install.sh

@@ -5,9 +5,9 @@ mkdir -vp /var/lib/ffmap/csv
 chown -R www-data:www-data /var/lib/ffmap
 
 mkdir -vp /usr/share/ffmap
-cp -v ffmap/mapnik/{hoods,hoods_v2,routers,routers_v2,routers_local}.xml /usr/share/ffmap
-sed -i -e 's#>csv/#>/var/lib/ffmap/csv/#' /usr/share/ffmap/{hoods,hoods_v2,routers,routers_v2,routers_local}.xml
-chown www-data:www-data /usr/share/ffmap/{hoods,hoods_v2,routers,routers_v2,routers_local}.xml
+cp -v ffmap/mapnik/{hoods,hoods_v2,hoods_poly,routers,routers_v2,routers_local}.xml /usr/share/ffmap
+sed -i -e 's#>csv/#>/var/lib/ffmap/csv/#' /usr/share/ffmap/{hoods,hoods_v2,hoods_poly,routers,routers_v2,routers_local}.xml
+chown www-data:www-data /usr/share/ffmap/{hoods,hoods_v2,hoods_poly,routers,routers_v2,routers_local}.xml
 
 cp -v ffmap/mapnik/tilestache.cfg /usr/share/ffmap
 cp -rv ffmap/web/static /usr/share/ffmap