<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<title>MapVGL</title>
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<style>
html,
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#map_container {
width: 100%;
height: 100%;
margin: 0;
}
</style>
<script src="//api.map.baidu.com/api?v=1.0&type=webgl&ak=1XjLLEhZhQNUzd93EjU5nOGQ"></script>
<script src="static/mapv.min.js"></script>
<script src="static/common.js"></script>
<script src="https://code.bdstatic.com/npm/mapvgl@1.0.0-beta.100/dist/mapvgl.min.js"></script>
<script src="https://code.bdstatic.com/npm/mapvgl@1.0.0-beta.100/dist/mapvgl.threelayers.min.js"></script>
</head>
<body>
<div id="map_container"></div>
<script>
/* global BMapGL */
/* global mapv */
/* global mapvgl */
/* global initMap */
var map = initMap({
tilt: 0
});
var point = new BMapGL.Point(116.404000,39.915221);
map.centerAndZoom(point, 11);
var view = new mapvgl.View({
effects: [
new mapvgl.BloomEffect({
threshold: 0.2,
blurSize: 2.0
}),
],
map: map
});
var result = [];
fetch('./static/bj_grid20181212.csv').then(function (rs) {
return rs.text();
}).then(function (rs) {
rs = rs.split('\n');
for (var i = 0; i < rs.length; i++) {
var line = rs[i].split(',');
result.push(line);
}
draw();
});
function draw() {
var data = [];
for (var i = 0; i < result.length - 1; i++) {
var line = result[i];
data.push({
geometry: {
type: 'POINT',
coordinates: [line[1], line[2]]
},
properties: {
count: line[3]
}
});
}
var whiteLayer = new mapvgl.HeatPointLayer({
blend: 'lighter',
style: 'grid',
shape: 'square',
size: 1,
min: 0,
max: 1000,
gradient: {
0: 'rgb(200, 200, 200, 0)',
0.2: 'rgb(200, 200, 200, 0.5)',
0.5: 'rgb(200, 200, 200, 0.8)',
0.51: 'rgb(200, 200, 200, 0)',
1: 'rgb(200, 200, 200, 0)'
}
});
var yellowLayer = new mapvgl.HeatPointLayer({
blend: 'lighter',
style: 'grid',
size: 4,
min: 0,
max: 1000,
gradient: {
0: 'rgb(200, 200, 200, 0)',
0.2: 'rgb(200, 200, 200, 0)',
0.5: 'rgb(226, 95, 0, 0.9)',
1: 'rgb(239, 209, 19, 0.9)'
}
/*
gradient: {
0.0: 'rgb(88, 54, 100, 0.0)',
0.2: 'rgb(174, 81, 174, 0.0)',
0.5: 'rgb(225, 108, 30, 0.8)',
1.0: 'rgb(241, 247, 14, 1.0)',
}
*/
});
view.addLayer(yellowLayer);
view.addLayer(whiteLayer);
whiteLayer.setData(data);
yellowLayer.setData(data);
}
</script>
</body>
</html>
