feat: add initial map code from activity mapper

people/static/js/map.js

@@ -0,0 +1,127 @@
+const marker_main_alpha_never = 1.0;
+const marker_main_alpha_future = 1.0;
+const marker_main_alpha = 1.0;
+
+const marker_main_colour_never = 'grey';
+const marker_main_colour_future = 'white';
+
+const marker_edge_colour = 'white';
+const marker_edge_colour_never = 'white';
+const marker_edge_colour_future = 'black';
+
+
+// Size of the arrow markers used on the map
+const marker_scale = 9;
+// Offset for the place type icon (multiplier for marker scale)
+const marker_label_offset = 0.27 * marker_scale;
+// Width and transparency for the edges of the markers
+const marker_edge_alpha = 1.0;
+const marker_edge_width = 1.0;
+
+const settings = {
+    zoom: 5
+}
+
+// const data = [
+//     {lat: 0, lng: 0, name: 'a'},
+//     {lat: 1, lng: 1, name: 'b'},
+//     {lat: 2, lng: 2, name: 'c'},
+// ]
+
+
+
+// Pull settings from the settings var
+// const time_after = filters.time_after;
+// const time_before = filters.time_before;
+// Set up a colour scale that goes from blue to red via yellow, over time_limit days
+// const visitedColour = d3.scaleSequential(d3.interpolateRdYlBu)
+//     .domain([filters.time_after, filters.time_before]);
+
+
+// The function called when Google Maps starts up
+function initMap() {
+    const centre_latlng = new google.maps.LatLng(0, 0);
+    // The map, centered at Soton
+    const map = new google.maps.Map(
+        document.getElementById('map'), { zoom: settings.zoom, center: centre_latlng });
+
+    // For each data entry in the json...
+    for (var i = 0; i < data.length; i++) {
+        // Get the lat-long position from the data
+        var lat_lng = new google.maps.LatLng(data[i].lat, data[i].lng);
+
+        // Generate a new marker
+        var marker = new google.maps.Marker({
+            position: lat_lng, map: map,
+            icon: {
+                path: google.maps.SymbolPath.BACKWARD_CLOSED_ARROW,
+                strokeColor: edgeColourByTime(data[i]),
+                strokeWeight: marker_edge_width,
+                strokeOpacity: marker_edge_alpha,
+                fillColor: mainColourByTime(data[i]),
+                fillOpacity: alphaByTime(data[i]),
+                scale: marker_scale,
+                labelOrigin: new google.maps.Point(0, -marker_label_offset)
+            },
+            label: (data[i].type === 'school' ? '🎓' : '')
+        });
+
+        // Build the info window content to tell the user the last time it was visited.
+        marker.info = new google.maps.InfoWindow({
+            content: "<div id='content'>" +
+                "<h3><a href=" + data[i].url + ">" + data[i].name.replace('&apos;', "'") + "</a></h3>" +
+                (data[i].hasOwnProperty('lastvisit') ? "<p>Last visited " + data[i].lastvisit + "</p>" : "<p>Never visited</p>") +
+                "</div>"
+        });
+
+        // We bind a listener to the current marker so that if it's clicked, it checks for an open info window,
+        // closes it, then opens the info window attached to it specifically. Then sets that as the last window.
+        google.maps.event.addListener(marker, 'click', function () {
+            if (last_info) {
+                last_info.close();
+            }
+            last_info = this.info;
+            this.info.open(map, this);
+        })
+    }
+
+    // Set the last info window to null
+    var last_info = null;
+}
+
+
+function mainColourByTime(d) {
+    if (!d.hasOwnProperty('time')) {
+        return marker_main_colour_never;
+    } else if (d.time > time_after) {
+        return visitedColour(time_after);
+    } else if (d.time < time_before) {
+        return marker_main_colour_future;
+    } else {
+        return visitedColour(d.time);
+    }
+}
+
+function edgeColourByTime(d) {
+    if (!d.hasOwnProperty('time')) {
+        return marker_edge_colour_never;
+    } else if (d.time > time_after) {
+        return marker_edge_colour;
+    } else if (d.time < time_before) {
+        return marker_edge_colour_future;
+    } else {
+        return marker_edge_colour;
+    }
+}
+
+function alphaByTime(d) {
+    if (!d.hasOwnProperty('time')) {
+        return marker_main_alpha_never;
+    } else if (d.time > time_after) {
+        return marker_main_alpha;
+    } else if (d.time < time_before) {
+        return marker_main_alpha_future;
+    } else {
+        return marker_main_alpha;
+    }
+}