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TileServer Click Interaction
var startingLocation = new google.maps.LatLng(42.3726261, -70.8322807)
, map = new google.maps.Map(document.getElementById('map'), {
zoom: 11,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.SMALL
},
center: startingLocation
})
, selectedGeographyPolygon
, selectedGeoID
, currentGeoID
, serverUrl = "http://nautilidae.cloudapp.net:8082/v1/";
var censusTiles = {
tilejson: '2.0.0',
tiles: [serverUrl + 'censusTracts/{z}/{x}/{y}.png'],
grids: [serverUrl + 'censusTracts/{z}/{x}/{y}.grid.json'],
formatter: function (options, data) {
return data.geoid;
}
};
map.overlayMapTypes.setAt(0, new wax.g.connector(censusTiles));
var interaction = wax.g.interaction()
.map(map)
.tilejson(censusTiles)
.on({
on: function (o) {
var clickedGeoID = o.data.geoid;
switch (o.e.type) {
case 'click':
// On click, freeze the selected geography ID and set hovered geography to null
currentGeoID = null;
if (selectedGeoID) {
if (selectedGeoID == clickedGeoID) {
selectedGeoID = null;
removeSelectedGeography();
}
else {
selectedGeoID = clickedGeoID;
removeSelectedGeography();
highlightSelectedGeography();
}
}
else {
selectedGeoID = clickedGeoID;
highlightSelectedGeography();
}
break;
case 'mousemove':
// On mouse over and no geography selected, update hovered over ID
if (!selectedGeoID) {
if (currentGeoID != clickedGeoID) {
currentGeoID = clickedGeoID;
}
}
break;
}
}
});
function highlightSelectedGeography() {
// Highlight clicked geography with encoded polyline from the database
$.get(serverUrl + "getGeoId?geoid=" + selectedGeoID, function (data) {
var poly = google.maps.geometry.encoding.decodePath(data.encoded_poly);
selectedGeographyPolygon = new google.maps.Polyline({
map: map,
path: poly,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 3
});
})
}
function removeSelectedGeography() {
// Remove highlighted polygon
selectedGeographyPolygon.setMap(null);
}
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript" src='https://nautilytics.blob.core.windows.net/d3-scripts/d3.v3.min.js'></script>
<script type="text/javascript" src='http://maps.google.com/maps/api/js?sensor=false&libraries=geometry'
type='text/javascript'></script>
<script type='text/javascript' src='wax.g.min.js'></script>
<link type='text/css' rel='stylesheet' href='styles-interaction.css'/>
</head>
<body>
<div id="map"></div>
</body>
<script type="text/javascript" src="google-geo-interaction-only.js"></script>
</html>
/** reset styles**/
html, body, div, h1, h2, h3 {
margin: 0;
padding: 0;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
box-sizing: border-box;
}
html, body {
height: 100%;
overflow: hidden;
}
#map {
height: 100%;
}
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