Question

首先，我要感谢你们的回答。

其次，我创建了一个包含Google Earth插件的网站，我使用KML字符串来显示两个坐标。我想看经度-122.084075，纬度37.4220033612141。当我加载我的网站时，我没有看到任何变化。

我的html代码+ kml字符串：

<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"> </script>
<script type="text/javascript">
    var ge;
    google.load("earth", "1", {"other_params":"sensor=false"});

    function init() 
    {
        google.earth.createInstance('map3d', initCB, failureCB);    
    }

    function initCB(instance) 
    {
        ge = instance;
        ge.getWindow().setVisibility(true);
        addKmlFromString(
                            '<?xml version="1.0" encoding="UTF-8"?>' +
                            '<kml xmlns="http://earth.google.com/kml/2.0">' +
                            '<Document>' +
                            '<Placemark>' +
                            '    <name>Floating placemark</name>' +
                            '        <visibility>1</visibility>' +
                            '        <description>Floats a defined distance above the ground.</description>' +
                            '   <LookAt>' +
                            '      <longitude>-122.084075</longitude>' +
                            '      <latitude>37.4220033612141</latitude>' +
                            '      <altitude>45</altitude>' +
                            '       <heading>0</heading>' +
                            '       <tilt>90</tilt>' +
                            '       <range>100</range>' +
                            '       <altitudeMode>relativeToGround</altitudeMode>' +
                            '   </LookAt>' +
                            '   <Style>' +
                            '    <IconStyle>' +
                            '      <Icon>' +
                            '       <href>https://cdn1.iconfinder.com/data/icons/future/512/drones_watching-64.png</href> ' +
                            '      </Icon>' +
                            '     </IconStyle>' +
                            '    </Style>' +
                            '    <Point>' +
                            '     <altitudeMode>relativeToGround</altitudeMode>' +
                            '      <coordinates>-122.0822035425683,37.42228990140251,50</coordinates>' +
                            '    </Point>' +
                            '</Placemark>' +
                            '    <Placemark>' +
                            '      <name>Flight Line</name>' +
                            '      <visibility>1</visibility>' +
                            '      <description>Black line (10 pixels wide), height tracks terrain</description>' +
                            '      <styleUrl>#thickBlackLine</styleUrl>' +
                            '      <LineString>' +
                            '        <tessellate>1</tessellate>' +
                            '        <altitudeMode>relativeToGround</altitudeMode>' +
                            '       <coordinates>' +
                            '         -122.0822035425683,37.42228990140251,0' +
                            '         -122,37.8,0' +
                            '       </coordinates>' +
                            '     </LineString>' +
                            '   </Placemark>' +
                            '<Placemark><name>From</name><Point><coordinates>-122.0822035425683,37.42228990140251,0</coordinates></Point></Placemark>' +
                            '<Placemark><name>To</name><Point><coordinates>-122,37.8,0</coordinates></Point></Placemark>' +
                            '</Document>' +
                            '</kml>'
                          );
    }

    function addKmlFromString(kmlString)
        {
            var kmlObject = ge.parseKml(kmlString);

            ge.getFeatures().appendChild(kmlObject);
        }

        function failureCB(errorCode) 
        {

        }



        google.setOnLoadCallback(init);
</script>

</head>
<body>
<div id="map3d" style="height: 300px; width: 400px;"></div>
</body>
</html>

请指导我。我究竟做错了什么？非常感谢！

Answer 1

我在这里找到了答案： https://developers.google.com/earth/documentation/camera_control#flytospeed

缩放相机

放大和缩小由LookAt的range属性和Camera的高度属性控制。

请注意，更改LookAt的高度属性会更改正在查看的点的高度。由于观察者范围与此点相关，因此观察者的高度也会发生变化。

注视：

// Get the current view.
var lookAt = ge.getView().copyAsLookAt(ge.ALTITUDE_RELATIVE_TO_GROUND);

// Zoom out to twice the current range.
lookAt.setRange(lookAt.getRange() * 2.0);

// Update the view in Google Earth.
ge.getView().setAbstractView(lookAt);

Answer 2

请参阅此链接https://developers.google.com/earth/documentation/kml

你错过了一行ge.getView().setAbstractView(kmlObject.getAbstractView()); 在ge.getFeatures().appendChild(kmlObject);

之后加上这一行

KML标签<camera>和<lookat> - 在Google地球插件中不起作用</lookat> </camera>

2 个答案: