<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>棱柱点—中国城市人口数量及GDP排行</title>
<style>
html,
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#map {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
.demo-title {
position: absolute;
top: 50px;
left: 50px;
z-index: 1;
}
h1 {
margin: 0;
color: #ACB3BB;
}
h3 {
font-weight: normal;
margin-top: 5px;
color: #8E939D;
}
</style>
</head>
<body>
<div class="demo-title">
<h1>多面棱柱—中国城市人口数量及GDP排行</h1>
<h3>中国城市各人口数量，总GDP数量和人均GDP排行情况</h3>
</div>
<div id="map"></div>
<script>
window.movingDraw = true;
</script>
<script
src="https://webapi.amap.com/maps?v=2.0&key=您申请的key值&plugin=AMap.Scale,AMap.ToolBar"></script>
<script type="text/javascript"
src="https://webapi.amap.com/loca?v=2.0.0&key=您申请的key值"></script>
<script>
var map = new AMap.Map('map', {
zoom: 5,
showLabel: false,
viewMode: '3D',
pitch: 55,
center: [103.594884,36.964587],
mapStyle: 'amap://styles/9d89a78e93bd0ee7506030fa35b9de47',
});
var loca = new Loca.Container({
map,
});
loca.ambLight = {
intensity: 0.7,
color: '#7b7bff',
};
loca.dirLight = {
intensity: 0.8,
color: '#fff',
target: [0, 0, 0],
position: [0, -1, 1],
};
loca.pointLight = {
color: 'rgb(240,88,25)',
position: [112.028276, 31.58538, 2000000],
intensity: 3,
// 距离表示从光源到光照强度为 0 的位置，0 就是光不会消失。
distance: 5000000,
};
var pl = new Loca.PrismLayer({
zIndex: 10,
opacity: 1,
visible: false,
hasSide: true,
});
var geo = new Loca.GeoJSONSource({
url: 'https://a.amap.com/Loca/static/loca-v2/demos/mock_data/gdp.json',
});
pl.setSource(geo);
// top3 的城市增加文字
var topConf = {
'上海市': 'https://a.amap.com/Loca/static/loca-v2/demos/images/top-one.png',
'北京市': 'https://a.amap.com/Loca/static/loca-v2/demos/images/top-two.png',
'广州市': 'https://a.amap.com/Loca/static/loca-v2/demos/images/top-three.png',
};
pl.setStyle({
unit: 'meter',
sideNumber: 32,
topColor: (index, f) => {
var n = f.properties['GDP'];
return n > 7000 ? '#E97091' : '#2852F1';
},
sideTopColor: (index, f) => {
var n = f.properties['GDP'];
return n > 7000 ? '#E97091' : '#2852F1';
},
sideBottomColor: '#002bb9',
radius: 15000,
height: (index, f) => {
var props = f.properties;
var height = Math.max(100, Math.sqrt(props['GDP']) * 9000 - 50000);
var conf = topConf[props['名称']];
// top3 的数据，增加文字表达
if (conf) {
map.add(
new AMap.Marker({
anchor: 'bottom-center',
position: [f.coordinates[0], f.coordinates[1], height],
content: '<div style="margin-bottom: 10px; float: left; font-size: 14px;height: 57px; width: 180px; color:#fff; background: no-repeat url(' +
conf +
'); background-size: 100%;"><p style="margin: 7px 0 0 35px; height: 20px; line-height:20px;">' +
props['名称'] + '人口 ' + props['人口'] + '</p>' +
'<p style="margin: 4px 0 0 35px; height: 20px; line-height:20px; color: #00a9ff; font-size: 13px;">' +
props['GDP'] + ' 元' +
'</p></div>',
}),
);
}
return height;
// return 60000 + n * 100;
},
// rotation: 360 * 100,
altitude: 0,
});
loca.add(pl);
map.on('complete', function () {
setTimeout(function () {
pl.show(500);
pl.addAnimate({
key: 'height',
value: [0, 1],
duration: 500,
easing: 'Linear',
transform: 500,
random: true,
delay: 5000,
});
}, 800);
});
loca.animate.start();
var dat = new Loca.Dat();
dat.addLayer(pl, 'GDP');
dat.addLight(loca.ambLight, loca, '环境光');
dat.addLight(loca.dirLight, loca, '平行光');
dat.addLight(loca.pointLight, loca, '点光');
// 点击事件处理
var clickInfo = new AMap.Marker({
anchor: 'bottom-center',
position: [116.396923, 39.918203, 0],
});
clickInfo.setMap(map);
clickInfo.hide();
// 动画测试
map.on('click', function (e) {
var feat = pl.queryFeature(e.pixel.toArray());
if (feat) {
clickInfo.show();
var props = feat.properties;
var height = Math.max(100, Math.sqrt(props['GDP']) * 9000 - 50000);
clickInfo.setPosition([feat.coordinates[0], feat.coordinates[1], height]);
clickInfo.setContent(
'<div style="text-align: center; height: 20px; width: 150px; color:#fff; font-size: 14px;">' +
feat.properties['名称'] + ': ' + feat.properties['GDP'] +
' 元</div>'
);
} else {
clickInfo.hide();
}
});
</script>
</body>
</html>
