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demo-grids.html
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demo-grids.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
body, html, .map-wapper, .gmap{ height: 98%; width: 100%; }
body{ overflow: hidden; }
.gmap{
display: block; width: 100%; height: 100%;
}
.map-wapper{
transition: all 0.5s ease-out;
-webkit-transform-style: preserve-3d;
-webkit-backface-visibility: hidden;
perspective: 300px;
}
.is-active{
transform: perspective(1200px) rotateX(45deg);
/*transform: rotateX(55deg);*/
}
p{ display: block; margin-bottom: 5px; z-index: 15; }
button{ font-size: 20px; margin-right: 5px; }
</style>
</head>
<body>
<p>
<button class="grid" data-grid="hexGrid">Hex</button>
<button class="grid" data-grid="squareGrid">Square</button>
<button class="grid" data-grid="triangleGrid">Triangle</button>
<button class="grid" data-grid="pointGrid">Point</button>
<button class="show-marker">show marker</button>
<button class="turn">on</button>
</p>
<div class="map-wapper">
<div class="gmap" id="map-canvas"></div>
</div>
<script src="js/d3.v3.min.js"></script>
<script src="js/jquery-1.11.3.min.js"></script>
<script src="js/turf.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?libraries=drawing"></script>
<script>
var styles=[{featureType:"all",elementType:"labels.text.fill",stylers:[{color:"#ffffff"},{weight:"0.20"},{lightness:"28"},{saturation:"23"},{visibility:"off"}]},{featureType:"all",elementType:"labels.text.stroke",stylers:[{color:"#494949"},{lightness:13},{visibility:"off"}]},{featureType:"all",elementType:"labels.icon",stylers:[{visibility:"off"}]},{featureType:"administrative",elementType:"geometry.fill",stylers:[{color:"#000000"}]},{featureType:"administrative",elementType:"geometry.stroke",stylers:[{color:"#144b53"},{lightness:14},{weight:1.4}]},{featureType:"landscape",elementType:"all",stylers:[{color:"#02101b"}]},{featureType:"poi",elementType:"geometry",stylers:[{color:"#0c4152"},{lightness:5}]},{featureType:"road.highway",elementType:"geometry.fill",stylers:[{color:"#000000"}]},{featureType:"road.highway",elementType:"geometry.stroke",stylers:[{color:"#0b434f"},{lightness:25}]},{featureType:"road.arterial",elementType:"geometry.fill",stylers:[{color:"#000000"}]},{featureType:"road.arterial",elementType:"geometry.stroke",stylers:[{color:"#0b3d51"},{lightness:16}]},{featureType:"road.local",elementType:"geometry",stylers:[{color:"#000000"}]},{featureType:"transit",elementType:"all",stylers:[{color:"#146474"}]},{featureType:"water",elementType:"all",stylers:[{color:"#021019"}]}];
var styles2=[{featureType:"landscape",elementType:"labels",stylers:[{visibility:"off"}]},{featureType:"transit",elementType:"labels",stylers:[{visibility:"off"}]},{featureType:"poi",elementType:"labels",stylers:[{visibility:"off"}]},{featureType:"water",elementType:"labels",stylers:[{visibility:"off"}]},{featureType:"road",elementType:"labels.icon",stylers:[{visibility:"off"}]},{stylers:[{hue:"#00aaff"},{saturation:-100},{gamma:2.15},{lightness:12}]},{featureType:"road",elementType:"labels.text.fill",stylers:[{visibility:"on"},{lightness:24}]},{featureType:"road",elementType:"geometry",stylers:[{lightness:57}]}];
var map, geoJson = { "type": "FeatureCollection", "features": [] };
var infoWindow = new google.maps.InfoWindow({ content: "", pixelOffset: new google.maps.Size(0, -20) });
var dataMap = new google.maps.Data();
var result;
var cellWidth = 0.5;
var aggregations = [{ aggregation: 'count', inField: 'valueCount', outField: 'area_count' }];
var styleOpt = 1;
$('.show-marker').on('click', function(e){
e.preventDefault();
showMarker();
});
$('.turn').on('click', function(e){
e.preventDefault();
if( styleOpt === 1 ){
styleOpt = 2;
map.setOptions({styles: styles2});
}else{
styleOpt = 1;
map.setOptions({styles: styles});
}
});
$('.grid').on('click', function(e){
e.preventDefault();
draw(result, $(this).data('grid'));
window.setTimeout(function(){ google.maps.event.trigger(map, 'idle'); }, 10);
});
d3.json('parking.json', function(data){
result = data;
initialize();
draw(result, 'hexGrid');
});
function initialize() {
var mapOptions = { zoom: 13, center: new google.maps.LatLng(25.06326, 121.55168), styles: styles };
map = new google.maps.Map($('#map-canvas')[0] , mapOptions);
}
function draw(data, gridType){
var features = [];
gridType = gridType || 'hexGrid';
// convert to geojson
for (var i = 0; i < data.length; i++) {
features.push(
turf.point([data[i].coords[1], data[i].coords[0]], { valueCount: data[i].availableCar || 1, name: data[i].name })
);
}
geoJson = turf.featurecollection(features);
google.maps.event.addListenerOnce(map, "idle", function() {
bounds = map.getBounds();
var ne = bounds.getNorthEast();
var sw = bounds.getSouthWest();
var minX = sw.lng() + 0.001, maxX = ne.lng() - 0.001;
var minY = sw.lat() + 0.001, maxY = ne.lat() - 0.001;
var bbox = [minX, minY, maxX, maxY];
var units = 'kilometers';
var xGrid;
var pointGrid;
dataMap.setMap(null);
dataMap = new google.maps.Data();
if( gridType === 'hexGrid' ){
xGrid = turf.hexGrid(bbox, cellWidth, units);
}else if( gridType === 'squareGrid' ){
xGrid = turf.squareGrid(bbox, cellWidth, units);
}else if( gridType === 'triangleGrid' ){
xGrid = turf.triangleGrid(bbox, cellWidth, units);
}else{
// only for point
var pointBox = turf.squareGrid(bbox, cellWidth, units);
var grid = turf.aggregate(pointBox, geoJson, aggregations);
pointGrid = { type: "FeatureCollection", features: [] };
for (var i = 0; i < pointBox.features.length; i++) {
pointGrid.features.push( turf.center(pointBox.features[i]) );
pointGrid.features[i].properties.area_count = grid.features[i].properties.area_count;
}
dataMap.addGeoJson( pointGrid );
// set dot style
dataMap.setStyle(function(feature) {
if( !feature.getProperty('area_count') ){ return { visible: false }; }
else{
return {
icon: {
path: google.maps.SymbolPath.CIRCLE,
fillColor: '#A91D1C',
fillOpacity: feature.getProperty('area_count') * 0.08,
strokeColor: '#F5C13D',
strokeOpacity: (parseInt( feature.getProperty('area_count'), 10) > 20) ? 0.75 : 0.3,
scale: parseInt( feature.getProperty('area_count'), 10) * 1.15
}
}
}
});
}
if(!pointGrid){
var grid = turf.aggregate(xGrid, geoJson, aggregations);
dataMap.addGeoJson( grid );
dataMap.addGeoJson( geoJson );
hideMarker();
dataMap.setMap(map);
dataMapInit();
}else{
dataMap.setMap(map);
dataMapInit();
}
});
}
function dataMapInit(){
dataMap.addListener('click', function(e) {
var feature_type = e.feature.getGeometry().getType();
var reformattedArray = aggregations.map(function(obj){
var attr = [];
attr.push( obj.outField );
return attr;
});
reformattedArray = reformattedArray.join().split(',');
if( feature_type === 'Polygon' || feature_type === 'Point' ){
var str = [];
for (var i = 0; i < reformattedArray.length; i++) {
str.push('<div style="line-height: 200%;"> '+ reformattedArray[i] +' = ' + e.feature.getProperty( reformattedArray[i] ) + "</div>");
}
infoWindow.setContent( str.join('') );
}
var anchor = new google.maps.MVCObject();
anchor.set("position", e.latLng);
if( feature_type === 'Polygon' && e.feature.getProperty("area_count") > 0 || feature_type === 'Point'){
infoWindow.open(map, anchor);
}
});
dataMap.addListener('click', function(event) {
//show an infowindow on click
var anchor = new google.maps.MVCObject();
anchor.set("position", event.latLng);
infoWindow.open(map, anchor);
});
}
function hideMarker(){
dataMap.setStyle(function(feature) {
// area
if( feature.getProperty('area_count')){
var n = parseInt(feature.getProperty('area_count'), 10);
return { fillOpacity: setColor(n), fillColor: '#A91D1C', strokeWeight: 1, strokeColor: '#F5C13D', strokeOpacity: (setColor(n) > 0.5) ? 0.55 : 0.3 };
}
else{
return { visible: false };
}
});
}
function showMarker(){
dataMap.setStyle(function(feature) {
// area
if( feature.getProperty('area_count')){
var n = parseInt(feature.getProperty('area_count'), 10);
return { fillOpacity: setColor(n), fillColor: '#A91D1C', strokeWeight: 1, strokeColor: '#F5C13D', strokeOpacity: (setColor(n) > 0.5) ? 0.55 : 0.3 };
}
else if( feature.getProperty('valueCount') ){
return { icon: 'https://chart.googleapis.com/chart?chst=d_map_pin_icon&chld=car|FFaa00' };
}
else{
return { visible: false };
}
});
}
function setColor(n){
return ((0.25 + n * 0.075) > 1) ? 1 : (0.25 + n * 0.075);
}
</script>
</body>
</html>