<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
<meta name="description" content="Fly to a specified location or view a geographic rectangle.">
<meta name="cesium-sandcastle-labels" content="Showcases">
<title>Cesium Demo</title>
<script type="text/javascript" src="../Sandcastle-header.js"></script>
<script type="text/javascript" src="../../../ThirdParty/requirejs-2.1.20/require.js"></script>
<script type="text/javascript">
require.config({
baseUrl : ‘../../../Source‘,
waitSeconds : 60
});
</script>
</head>
<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
<style>
@import url(../templates/bucket.css);
#viewChanged, #cameraChanged {
display: none;
background-color: red;
color: white;
}
</style>
<div id="cesiumContainer" class="fullSize"></div>
<div id="loadingOverlay"><h1>Loading...</h1></div>
<div id="toolbar">
<div id="viewChanged">View Changed</div>
<div id="cameraChanged">Camera Changed</div>
</div>
<script id="cesium_sandcastle_script">
function startup(Cesium) {
‘use strict‘;
//Sandcastle_Begin
var viewer = new Cesium.Viewer(‘cesiumContainer‘);
var widget = new Cesium.CesiumWidget(‘cesiumContainer‘);
var scene = viewer.scene;
var clock = viewer.clock;
var timer;
function flyInACity() {
Sandcastle.declare(flyInACity);
var camera = scene.camera;
camera.flyTo({
destination : Cesium.Cartesian3.fromDegrees(-73.98580932617188, 40.74843406689482, 363.34038727246224),
complete : function() {
setTimeout(function() {
camera.flyTo({
destination : Cesium.Cartesian3.fromDegrees(-73.98585975679403, 40.75759944127251, 186.50838555841779),
orientation : {
heading : Cesium.Math.toRadians(200.0),
pitch : Cesium.Math.toRadians(-50.0)
},
easingFunction : Cesium.EasingFunction.LINEAR_NONE
});
}, 1000);
}
});
}
Sandcastle.addToolbarMenu([{
text : ‘Fly in a city‘,
onselect : function() {
flyInACity();
Sandcastle.highlight(flyInACity);
}
}]);
/**
* activates viewchanged Event
* This event will be fired many times when the camera position or direction is changing
* @param {Boolean} active
*/
var camera = scene.camera;
var posX = camera.position.x;
var posY = camera.position.y;
var posZ = camera.position.z;
var dirX = camera.direction.x;
var dirY = camera.direction.y;
var dirZ = camera.direction.z;
// tolerance
var posD = 3;
var dirD = 0.001;
var listenerFunc = function() {
var currentCamera = scene.camera;
var _posX = currentCamera.position.x;
var _posY = currentCamera.position.y;
var _posZ = currentCamera.position.z;
var _dirX = currentCamera.direction.x;
var _dirY = currentCamera.direction.y;
var _dirZ = currentCamera.direction.z;
if (Math.abs(posX - _posX) > posD ||
Math.abs(posY - _posY) > posD ||
Math.abs(posZ - _posZ) > posD ||
Math.abs(dirX - _dirX) > dirD ||
Math.abs(dirY - _dirY) > dirD ||
Math.abs(dirZ - _dirZ) > dirD) {
posX = _posX;
posY = _posY;
posZ = _posZ;
dirX = _dirX;
dirY = _dirY;
dirZ = _dirZ;
if (timer != null) {
clearTimeout(timer);
}
timer = setTimeout(function(){
console.log("Wake up Tiling Manager from sleep");
timer = null;
}, 100 + 100*Math.random());
}
};
widget.clock.onTick.addEventListener(listenerFunc);
//Sandcastle_End
Sandcastle.finishedLoading();
}
if (typeof Cesium !== "undefined") {
startup(Cesium);
} else if (typeof require === "function") {
require(["Cesium"], startup);
}
</script>
</body>
</html>
时间： 2025-01-06 06:11:09