添加任意DIV-源代码示例 运行 重置

                    <!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%;
        }
         #add{
            position: absolute;
            left: 0;
            color: #333;
            background-color: #f1f1f1;
            padding: 15px;
            width: 260px;
            right: 0;
        }
        .bmgl-widget-credits{display:none}
    </style>
    <title>part_test</title>
</head>
<body>
<div id='container'></div>
<div id="add">
    这是一个div
</div>
<script>
     bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
    var viewer = new bmgl.Viewer('container', {
        terrainId: 'bigemap.9af15d8e',
        mapId: 'bigemap.googlemap-satellite'
    });
    var position=bmgl.Cartesian3.fromDegrees(104,30,520);
     viewer.camera.setView({
        destination:bmgl.Cartesian3.fromDegrees(104,30,20000000)
    });
    viewer.scene.preRender.addEventListener(function () {
        var p_2d=viewer.scene.cartesianToCanvasCoordinates(position);
        if (bmgl.defined(p_2d)){
            var div_dom=document.getElementById('add');
            div_dom.style.left=p_2d.x+'px';
            div_dom.style.top=p_2d.y+'px';
            var c_p=viewer.scene.camera.position;
            if (viewer.scene.globe.ellipsoid.cartesianToCartographic(c_p).height+viewer.scene.globe.ellipsoid.maximumRadius>bmgl.Cartesian3.distance(position,c_p)){
                div_dom.style.display='block';
            }else{
                div_dom.style.display='none';
            }
        }
    });
</script>
</body>
</html>                                                                                                                                                                                                                                            
源码