<!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}
</style>
<title>part_test</title>
</head>
<body>
<div id='container'></div>
<script>
bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
var viewer = new bmgl.Viewer('container', {mapId: 'bigemap.zhongkexingtu'});
var tilesets = new bmgl.BM3DTileset({
url:'/bmgl/data/osgb_house/tileset.json',
skipLevelOfDetail: true,
maximumNumberOfLoadedTiles: 1000000, // 最大加载的 tile 数量
// baseScreenSpaceError: 4096,
maximumScreenSpaceError: 64, // 数值加大，能让最终成像变模糊
// skipScreenSpaceErrorFactor: 2048,
// skipLevels: 1,
immediatelyLoadDesiredLevelOfDetail: false,
loadSiblings: false, // 如果为true则不会在已加载完概况房屋后，自动从中心开始超清化房屋
cullWithChildrenBounds: true,
cullRequestsWhileMoving: true,
cullRequestsWhileMovingMultiplier: 1, // 值越小能够更快的剔除
preloadWhenHidden: true,
preferLeaves: false,
maximumMemoryUsage: 3600, // 内存分配变小有利于倾斜摄影数据回收，提升性能体验
maximumScreenSpaceError: 24, // 数值加大，能让最终成像变模糊 数值越小显示的画面会月精美,同时会增加内存消耗,最小是0,默认值为16
preloadWhenHidden: true, // 当 tileset 隐藏时进行预加载
preloadFlightDuration: 10, // 预加载飞行过程中的数据，数值越大，预加载的范围越广
// loadSiblings: true, // 如果为true则不会在已加载完概况房屋后，自动从中心开始超清化房屋
show: true, //它控制BM3DTileset是否可见
dynamicScreenSpaceErrorDensity: 10000000000, //数值加大，能让周边加载变快
});
tilesets.readyPromise.then(function(tileset) {
viewer.scene.primitives.add(tileset);
default_HeadingPitchRange = new bmgl.HeadingPitchRange(0.0, -0.5, tileset.boundingSphere.radius * 2.0);
viewer.zoomTo(tileset, default_HeadingPitchRange);
var cartographic = bmgl.Cartographic.fromCartesian(tileset.boundingSphere.center);
var delta_lng=0,delta_lat=0;
var surface = bmgl.Cartesian3.fromRadians(cartographic.longitude+delta_lng, cartographic.latitude+delta_lat, 0.0);
var offset = bmgl.Cartesian3.fromRadians(cartographic.longitude+delta_lng, cartographic.latitude+delta_lat,40.0);
var translation = bmgl.Cartesian3.subtract(offset, surface, new bmgl.Cartesian3());
tileset.modelMatrix = bmgl.Matrix4.fromTranslation(translation);
}).otherwise(function(error) {
console.log(error);
});
</script>
</body>
</html>
源码