<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8' />
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<link href='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/Widgets/widgets.css' rel='stylesheet' />
<script src='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/bigemap-gl.js'></script>
<style>
body {
margin: 0;
padding: 0;
}
#container {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
.bmgl-widget-credits {
display: none
}
.jietu {
position: absolute;
top: 30px;
right: 100px;
}
</style>
<title>part_test</title>
</head>
<body>
<div id='container'></div>
<button class='jietu' onclick="jietu()">截图</button>
<script>
bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
var viewer = new bmgl.Viewer('container', {
mapId: 'bigemap.zhongkexingtu',
});
viewer.BMWidget.screenSpaceEventHandler.removeInputAction(bmgl.ScreenSpaceEventType.LEFT_CLICK);
var promise = bmgl.GeoJsonDataSource.load('/Public/offline/chad/510000.geojson');
promise.then(function (dataSource) {
viewer.dataSources.add(dataSource);
//Get the array of entities
var entities = dataSource.entities.values;
var colorHash = {};
for (var i = 0; i < entities.length; i++) {
//For each entity, create a random color based on the state name.
//Some states have multiple entities, so we store the color in a
//hash so that we use the same color for the entire state.
var entity = entities[i];
var name = entity.name;
var color = colorHash[name];
if (!color) {
color = bmgl.Color.fromRandom({
alpha: 1,
});
colorHash[name] = color;
}
//Set the polygon material to our random color.
entity.polygon.material = color;
//Remove the outlines.
entity.polygon.outline = false;
//Extrude the polygon based on the state's population. Each entity
//stores the properties for the GeoJSON feature it was created from
//Since the population is a huge number, we divide by 50.
entity.polygon.extrudedHeight = Math.floor(Math.random() * 600000 + 10000);
}
viewer.camera.flyTo({
destination: bmgl.Cartesian3.fromDegrees(98.435314, 19.960521, 1500000.0), // 设置位置
orientation: {
heading: bmgl.Math.toRadians(20.0), // 方向
pitch: bmgl.Math.toRadians(-50.0),// 倾斜角度
roll: bmgl.Math.toRadians(-20.0)
}
});
}).otherwise(function (error) {
//Display any errrors encountered while loading.
window.alert(error);
});
function jietu() {
viewer.scene.render()
var dataUrl = viewer.scene.canvas.toDataURL("image/png");
var url = dataUrl;
var a = document.createElement('a');
var event = new MouseEvent('click');
a.download = 'map.png';
a.href = url;
a.dispatchEvent(event);
}
</script>
</body>
</html>
源码