From 56e4328f9b1f1fe949403fc7f2d38cd32c7d83cc Mon Sep 17 00:00:00 2001
From: Christopher Baines <cbaines8@gmail.com>
Date: Sun, 9 Dec 2012 18:01:58 +0000
Subject: Fix key, and display nodes instead of ways for hospitals when zoomed
 out

---
 resources/map.js        | 15 +++++++++++++--
 resources/op2geojson.js | 18 ++++++++++++++++--
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/resources/map.js b/resources/map.js
index 14875fe..308caae 100644
--- a/resources/map.js
+++ b/resources/map.js
@@ -42,6 +42,14 @@ $(document).ready(function() {
 <% }); %> \
 </table>');
 
+    var hospitalIcon = L.icon({
+        iconUrl: 'resources/img/hospital.png',
+
+        iconSize:     [18, 18], // size of the icon
+        iconAnchor:   [9, 9], // point of the icon which will correspond to marker's location
+        popupAnchor:  [2, -9] // point from which the popup should open relative to the iconAnchor
+    });
+
 	self.tileLayer = L.tileLayer('http://{s}.www.toolserver.org/tiles/osm-no-labels/{z}/{x}/{y}.png', {
 		maxZoom: 18,
 		attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors'
@@ -75,7 +83,7 @@ $(document).ready(function() {
     legend.onAdd = function (map) {
         var div = L.DomUtil.create('div', 'info legend');
 
-        div.innerHTML += '<img href="resources/img/hospital.png"> Hospital<br>';
+        div.innerHTML += '<img src="resources/img/hospital.png"> Hospital<br>';
 
         return div;
     };
@@ -93,7 +101,7 @@ $(document).ready(function() {
 		bbox = [sw.lat, sw.lng, ne.lat, ne.lng].join(',');
 		var data = createQueryData(bbox);
 		converter = new op2geojson();
-		converter.fetch("http://overpass-api.de/api/interpreter", data, function(data) {
+		converter.fetch("http://overpass-api.de/api/interpreter", data, zoom, function(data) {
 
             if (jQuery.isEmptyObject(self.amenityLayers)) {
                 // Now deal with the catchment areas
@@ -127,11 +135,14 @@ $(document).ready(function() {
                     self.amenityLayers[amenity] = L.geoJson(data, {
                         style: function(feature) {
                             return {color: 'red',
+                                    fillColor: 'red',
+                                    fillOpacity: 0.2,
                                     weight: 10};
                         },
     			        onEachFeature: function(feature, layer) {
                             var center;
                             if (feature.geometry.type === "Point") {
+                                layer.options.icon = hospitalIcon;
                                 center = feature.geometry.coordinates;
                             } else {
                                 center = feature.geometry.coordinates[0];
diff --git a/resources/op2geojson.js b/resources/op2geojson.js
index 5a979b1..3221842 100644
--- a/resources/op2geojson.js
+++ b/resources/op2geojson.js
@@ -5,7 +5,7 @@ op2geojson = function() {
 	var instance = {},
 		geojson;
 
-	instance.fetch = function(url, data, callback) {
+	instance.fetch = function(url, data, zoom, callback) {
     	$.post(url, data,
 			function(data) {
 				// Add nodes and ways to the layer
@@ -35,7 +35,21 @@ op2geojson = function() {
 				});
 
 				$.each(ways, function(i, way) {
-					features.push( instance.lineString(way, nodes) );
+                    if (zoom < 16) {
+                        var node = nodes[way.nodes[0]];
+		                var point = {
+			                "type" : "Feature",
+			                "geometry" : {
+				                "type" : "Point",
+				                "coordinates" : [node.lon,node.lat]
+			                },
+			                "properties" : {}
+		                 };
+		                _.extend(point.properties, way.tags);
+					    features.push( point );
+                    } else {
+					    features.push( instance.lineString(way, nodes) );
+                    }
 				});
 
 				$.each(relations, function(i, relation) {
-- 
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