From eec66224805eccb9d3ac2a8c1b7202f82019e66e Mon Sep 17 00:00:00 2001
From: Christopher Baines <cbaines8@gmail.com>
Date: Tue, 11 Dec 2012 21:58:52 +0000
Subject: Clicking on the catchment areas will now open the hospital popup

The hospital popup now includes information for the hospital and the catchment area,
this informaiton is also now presented in a human readable form, instead of a key
value table. The information in the popup is not complete.
---
 resources/map.js        | 104 +++++++++++++++++++++++++++---------------------
 resources/op2geojson.js |   5 +++
 2 files changed, 63 insertions(+), 46 deletions(-)

diff --git a/resources/map.js b/resources/map.js
index 308caae..a2c16f5 100644
--- a/resources/map.js
+++ b/resources/map.js
@@ -2,27 +2,24 @@ $(document).ready(function() {
 
 	var self = this;
 
-	self.popupTemplate = _.template('<a href="http://www.openstreetmap.org/edit?editor=potlatch2&lat=<%= coordinate[1] %>&lon=<%= coordinate[0] %>&zoom=18">\
+	self.hospitalTemplate = _.template('<a href="http://www.openstreetmap.org/edit?editor=potlatch2&lat=<%= coordinate[1] %>&lon=<%= coordinate[0] %>&zoom=18">\
 <img src="resources/img/potlatch.png">\
 </a>\
 <a href="http://www.openstreetmap.org/edit?editor=remote&lat=<%= coordinate[1] %>&lon=<%= coordinate[0] %>&zoom=18">\
 <img src="resources/img/josm.png">\
 </a>\
+<h2>Hospital</h2>\
 <table>\
-<tr><th>Key</th><th>Value</th></tr>\
-<% _.each(properties, function(val, key) { %> \
-<% if (/\:/.exec(key)) { %> \
-<tr> \
-<td><%= key.split(":")[1] %> </td> \
-<td><%= val %> </td> \
-</tr> \
-<% } else {%> \
-<tr>\
-<td><%= key %> </td> \
-<td><%= val %> </td> \
-</tr>\
-<% } %> \
-<% }); %> \
+<tr><td>Name</td><td><%= properties["name"] %></td></tr>\
+<tr><td>Emergency</td><td><%= properties["emergency"] %></td></tr>\
+</table>\
+<h2>Catchment Area</h2>\
+<table>\
+<tr><td>Surface Area</td><td></td></tr>\
+<tr><td>Number of villages</td><td></td></tr>\
+<tr><td>Population</td><td></td></tr>\
+<tr><td>Furthest Village from health structure</td><td></td></tr>\
+<tr><td>Average distance of all villages from health structure</td><td></td></tr>\
 </table>');
 
 	self.catchmentTemplate = _.template('<table>\
@@ -104,32 +101,7 @@ $(document).ready(function() {
 		converter.fetch("http://overpass-api.de/api/interpreter", data, zoom, function(data) {
 
             if (jQuery.isEmptyObject(self.amenityLayers)) {
-                // Now deal with the catchment areas
-                self.catchmentAreaLayer = L.geoJson(data, {
-                    style: function(feature) {
-                        return {fillColor: 'green',
-                                weight: 2,
-                                opacity: 1,
-                                color: 'black',
-                                dashArray: '3',
-                                fillOpacity: 0.1};
-                    },
-    		        onEachFeature: function(feature, layer) {
-                        layer.on({
-                            mouseover: highlightFeature,
-                            mouseout: resetHighlight,
-                            click: zoomToFeature
-                        });
-
-			            layer.bindPopup(self.catchmentTemplate({ properties: feature.properties }));
-		            },
-			        filter: function(feature, layer) {
-				        return _.contains(_.values(feature.properties), "catchment_area");
-			        }
-		        });
-
-                map.addLayer(self.catchmentAreaLayer);
-		        self.layersControl.addOverlay(self.catchmentAreaLayer, "Catchment Areas");
+                var markers = {};
 
 	            _.each(self.amenities, function(amenity, i) {
                     self.amenityLayers[amenity] = L.geoJson(data, {
@@ -148,15 +120,47 @@ $(document).ready(function() {
                                 center = feature.geometry.coordinates[0];
                             }
 
-				            layer.bindPopup(self.popupTemplate({ properties: feature.properties, coordinate: center }));
+				            layer.bindPopup(self.hospitalTemplate({ properties: feature.properties, coordinate: center }));
+
+                            markers[feature.id] = layer;
 			            },
 			            filter: function(feature, layer) {
 				            return _.contains(_.values(feature.properties), amenity);
 			            }
 		            });
+
                     map.addLayer(self.amenityLayers[amenity]);
 		            self.layersControl.addOverlay(self.amenityLayers[amenity], self.amenities[i].charAt(0).toUpperCase() + self.amenities[i].slice(1));
 	    	    });
+
+                // Now deal with the catchment areas
+                self.catchmentAreaLayer = L.geoJson(data, {
+                    style: function(feature) {
+                        return {fillColor: 'green',
+                                weight: 2,
+                                opacity: 1,
+                                color: 'black',
+                                dashArray: '3',
+                                fillOpacity: 0.1};
+                    },
+    		        onEachFeature: function(feature, layer) {
+                        var marker_layer = markers[feature.properties.subject];
+                        var popup = markers[feature.properties.subject].openPopup;
+                        layer.on({
+                            mouseover: highlightFeature,
+                            mouseout: resetHighlight,
+                            click: function() {
+                                markers[feature.properties.subject].openPopup();
+                            }
+                        });
+		            },
+			        filter: function(feature, layer) {
+				        return _.contains(_.values(feature.properties), "catchment_area");
+			        }
+		        });
+
+                map.addLayer(self.catchmentAreaLayer);
+		        self.layersControl.addOverlay(self.catchmentAreaLayer, "Catchment Areas");
             } else {
                 self.catchmentAreaLayer.clearLayers();
                 self.catchmentAreaLayer.addData(data);
@@ -190,10 +194,6 @@ $(document).ready(function() {
         self.catchmentAreaLayer.resetStyle(e.target);
     }
 
-    function zoomToFeature(e) {
-        map.fitBounds(e.target.getBounds());
-    }
-
 	function onLocationFound(e) {
 		self.currentLocation = e.latlng;
 		var radius = e.accuracy / 2;
@@ -205,6 +205,18 @@ $(document).ready(function() {
 		alert(e.message);
 	}
 
+    function polygonArea(X, Y, numPoints)
+    {
+        area = 0;         // Accumulates area in the loop
+        j = numPoints-1;  // The last vertex is the 'previous' one to the first
+
+        for (i=0; i<numPoints; i++) {
+            area = area +  (X[j]+X[i]) * (Y[j]-Y[i]);
+            j = i;  // j is previous vertex to i
+        }
+        return area/2;
+    }
+
 	map.on('locationfound', onLocationFound);
 	map.on('locationerror', onLocationError);
 
diff --git a/resources/op2geojson.js b/resources/op2geojson.js
index 3221842..bef1153 100644
--- a/resources/op2geojson.js
+++ b/resources/op2geojson.js
@@ -39,6 +39,7 @@ op2geojson = function() {
                         var node = nodes[way.nodes[0]];
 		                var point = {
 			                "type" : "Feature",
+                            "id" : way.id,
 			                "geometry" : {
 				                "type" : "Point",
 				                "coordinates" : [node.lon,node.lat]
@@ -114,6 +115,7 @@ op2geojson = function() {
 	instance.polygon = function(relation, ways, nodes) {
         polyCoordinates = [];
         var firstCheck = true;
+        var subject;
 
 		$.each(relation.members, function(i, member) {
             if (member.role == "outer") {
@@ -141,6 +143,8 @@ op2geojson = function() {
                     polyCoordinates.pop();
                 }
 			    polyCoordinates = polyCoordinates.concat( wayCoordinates );
+            } else if (member.role == "subject") {
+                subject = member.ref;
             }
 		});
 
@@ -155,6 +159,7 @@ op2geojson = function() {
 
 		// Add the tags
 		_.extend(poly.properties, relation.tags);
+        poly.properties["subject"] = subject;
 
 		return poly;
 	}
-- 
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