我正在尝试找出以下代码。但问题是它给了我一个错误，说 Uncaught Reference error: Detector is not defined。有人可以帮我弄这个吗。我无法弄清楚出了什么问题。我已经包含了所有需要的 javascript 插件以及这个文件。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<meta name="description" content="WebGL experiments - Connected Earth experiment">
<meta name="keywords" content="callum,chrome,collada,earth,example,experiments,globe,google,hurricane tracker,linden,opengl,planet,sample,shader,spline,three.js,webgl,">
<link rel="stylesheet" media="all" href="button.css" />
<script src="three.min.js"></script>
<script src="Detector.js"></script>
<script src="Tween.js"></script>
<script src="planet.js"></script>
<script src="latlng.js"></script>
<script src="city_locations.js"></script>
<script src="Stats.js"></script>
<style>
body {
background: #000;
padding: 0;
margin: 0;
color: #fff;
font-family:"Lucida Console", Monaco, monospace;
text-align:left;
overflow: hidden;
}
#container canvas {
background: #000;
position: absolute;
top: 0px;
width: 100%;
height: 100%;
left: 0px;
}
#help {
position: absolute;
top: 50%;
width: 350px;
height: 400px;
left: 50%;
margin-left: -175px;
margin-top: -200px;
background-color: rgba(0, 0, 0, 0.7);
border-radius: 10px;
border: 5px solid #666;
padding: 10px;
overflow: auto;
pointer-events: none;
}
#controls {
position: absolute;
top: 8px;
width:800px;
height: 38px;
left: 50%;
text-align: center;
margin-left: -450px;
background-color: rgba(30, 60, 3, 0.7);
border-radius: 10px;
border: 5px solid #666;
padding: 10px;
overflow: auto;
}
h2 {
text-align: center;
color: #ff9;
}
a {
color: #9f9;
text-decoration: none;
}
.hide {
opacity: 0;
-webkit-transition: opacity .5s ease-out;
-moz-transition: opacity .5s ease-out;
-o-transition: opacity .5s ease-out;
}
.show {
opacity: 1;
-webkit-transition: opacity .5s ease-out;
-moz-transition: opacity .5s ease-out;
-o-transition: opacity .5s ease-out;
}
img.cornered {
position: absolute;
bottom: 0;
left: 0;
margin: 0;
}
</style>
<title>callum.com - Connected Planet</title>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-35129047-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</head>
<script>
var planetTilt = latlngDeg2rad(23.5);
console.log(planetTilt);
var planetRadius = 6378;
var rotationSpeed = 0.3;
var cloudsScale = 1.02;
var height = window.innerHeight;
var width = window.innerWidth;
var camera, controls, scene, renderer, geometry, meshPlanet, meshClouds;
var clock = new THREE.Clock();
var cameraZoomFactor = 7;
var displayHelp = false;
var curZoom = 100;
var markerGeom;
var markerMaterial;
var stats;
function onWindowResize(event) {
width = window.innerWidth;
height = window.innerHeight;
renderer.setSize(width, height);
camera.aspect = width / height;
camera.updateProjectionMatrix();
controls.screen.width = width;
controls.screen.height = height;
camera.radius = (width + height) / 4;
}
function init() {
if (!Detector.webgl) Detector.addGetWebGLMessage();
scene = new THREE.Scene();
renderer = new THREE.WebGLRenderer({
clearAlpha: 1,
clearColor: 0x000000,
antialias: true
});
renderer.setSize(width, height);
renderer.sortObjects = true;
renderer.autoClear = false;
renderer.gammaInput = true;
renderer.gammaOutput = true;
renderer.domElement.style.position = 'absolute';
var container = document.getElementById('container');
container.appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera(25, width / height, 50, 1e7);
camera.position.z = planetRadius * cameraZoomFactor;
scene.add(camera);
controls = new THREE.TrackballControls(camera, renderer.domElement);
controls.rotateSpeed = 0.3;
controls.noZoom = true;
controls.noPan = true;
controls.staticMoving = false;
controls.dynamicDampingFactor = 0.4;
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.bottom = '0px';
stats.domElement.style.right = '0px';
document.body.appendChild( stats.domElement );
var dirLight = new THREE.DirectionalLight(0xFFFFFF);
dirLight.position.set(1, 0, 1)
.normalize();
scene.add(dirLight);
var camLight = new THREE.DirectionalLight(0xffffff);
camera.add(camLight);
var ambientLight = new THREE.AmbientLight(0x999999);
scene.add(ambientLight);
var planet = new cpPlanet({
planet_radius: planetRadius,
planet_tilt_rad: planetTilt,
planet_cloud_texture: "cloud.png",
planet_surface_texture: "earth_surface.jpg",
planet_normals_texture: "earth_normals.jpg",
planet_specular_texture: "earth_specular.jpg",
planet_geom_segments: 64,
planet_geom_rings: 64,
use_surface_shader: true,
create_combined_mesh: false
});
meshPlanet = planet.surface_mesh;
scene.add(meshPlanet);
meshClouds = planet.cloud_mesh;
scene.add(meshClouds);
// markers and tracks
var marker_radius = 32;
var marker_color = 0xff0000;
markerGeom = new THREE.SphereGeometry(marker_radius, 5, 5);
markerMaterial = new THREE.MeshPhongMaterial({
ambient: 0x030303,
color: marker_color,
specular: 0x990000,
shininess: 80,
shading: THREE.SmoothShading
});
// need to update a bunch of stuff when window size changes
window.addEventListener('resize', onWindowResize, false);
}
function animate() {
requestAnimationFrame(animate);
var delta = clock.getDelta();
meshPlanet.rotation.y += rotationSpeed * rotationSpeed * delta;
meshClouds.rotation.y += rotationSpeed * 1.25 * rotationSpeed * delta;
controls.update();
TWEEN.update();
stats.update();
renderer.clear();
renderer.render(scene, camera);
}
function addData(locs) {
var index = Math.floor(Math.random() * locs.length) - 1;
var start_lat = locs[index].lat;
var start_lng = locs[index].lng;
var data_size = 30;
var start = Math.floor(Math.random() * locs.length) - 1;
if (start + data_size > locs.length) {
start = locs.length - data_size - 1;
}
var hue = Math.random();
var i;
for (i = start; i < start + data_size; i++) {
var obj = locs[i];
if (i != index) {
addTrack(start_lat, start_lng, obj.lat, obj.lng, planetRadius, hue);
addMarker(obj.lat, obj.lng, planetRadius);
}
}
}
function zoomToStart() {
new TWEEN.Tween({
scale: 1
})
.to({
scale: 100
}, 2500)
.easing(TWEEN.Easing.Elastic.InOut)
.onUpdate(function () {
var true_scale = this.scale / 100;
meshPlanet.scale.set(true_scale, true_scale, true_scale);
meshClouds.scale.set(true_scale * cloudsScale, true_scale * cloudsScale, true_scale * cloudsScale);
})
.start();
}
function addMarker(lat, lng, radius) {
var marker_mesh = new THREE.Mesh(markerGeom, markerMaterial);
var marker_position = latlngPosFromLatLng(lat, lng, radius);
marker_mesh.position.x = marker_position.x;
marker_mesh.position.y = marker_position.y;
marker_mesh.position.z = marker_position.z;
marker_mesh.name = "trackmarker";
meshPlanet.add(marker_mesh);
}
function addTrackLine(spline, hue) {
var num_control_points = 32;
var i;
var colors = [];
var geometry = new THREE.Geometry();
var pos;
for (i = 0; i < num_control_points; i++) {
var index = i / num_control_points;
pos = spline.getPoint(index);
colors[i] = new THREE.Color(0xffffff);
colors[i].setHSV(hue, (1.0 - i / num_control_points), 1.0);
geometry.vertices.push(new THREE.Vector3(pos.x, pos.y, pos.z));
}
pos = spline.getPoint(1.0);
geometry.vertices.push(new THREE.Vector3(pos.x, pos.y, pos.z));
geometry.colors = colors;
var material = new THREE.LineBasicMaterial({
color: 0xffffff,
opacity: 1,
linewidth: 2
});
material.vertexColors = true;
var line = new THREE.Line(geometry, material);
line.name = "trackline";
meshPlanet.add(line);
}
function addTrack(start_lat, start_lng, end_lat, end_lng, radius, hue) {
var num_control_points = 8;
var max_altitude = 500 + Math.random() * 1200;
var points = [];
var i;
for (i = 0; i < num_control_points + 1; i++) {
var arc_angle = i * 180.0 / num_control_points;
var arc_radius = radius + (Math.sin(latlngDeg2rad(arc_angle))) * max_altitude;
var latlng = latlngInterPoint(start_lat, start_lng, end_lat, end_lng, i / num_control_points);
var pos = latlngPosFromLatLng(latlng.lat, latlng.lng, arc_radius);
points.push(new THREE.Vector3(pos.x, pos.y, pos.z));
}
var spline = new THREE.SplineCurve3(points);
addTrackLine(spline, hue);
}
function toggleRotation() {
if (rotationSpeed > 0) rotationSpeed = 0.0;
else rotationSpeed = 0.3;
}
function zoomCamera(zoom_param) {
var minZoom = 20;
var maxZoom = 450;
var incZoom = (maxZoom - minZoom) / 9;
var timeZoom = 400;
var startZoom = curZoom;
var endZoom;
if (zoom_param == 1) {
endZoom = curZoom + incZoom;
if (endZoom > maxZoom) endZoom = maxZoom;
} else if (zoom_param == -1) {
endZoom = curZoom - incZoom;
if (endZoom < minZoom) endZoom = minZoom;
} else {
endZoom = zoom_param;
}
if (startZoom != endZoom) {
new TWEEN.Tween({
zoom: startZoom
})
.to({
zoom: endZoom
}, timeZoom)
.easing(TWEEN.Easing.Back.InOut)
.onUpdate(function () {
curZoom = this.zoom;
var true_scale = this.zoom / 100;
meshPlanet.scale.set(true_scale, true_scale, true_scale);
meshClouds.scale.set(true_scale * cloudsScale, true_scale * cloudsScale, true_scale * cloudsScale);
})
.onComplete(function () {
curZoom = this.zoom;
})
.start();
}
}
function toggleHelp() {
displayHelp = !displayHelp;
if (displayHelp) {
document.getElementById('help')
.style.opacity = 1;
} else {
document.getElementById('help')
.style.opacity = 0;
}
}
function resetView() {
scene.remove(camera);
camera = new THREE.PerspectiveCamera(25, width / height, 50, 1e7);
camera.position.z = planetRadius * cameraZoomFactor;
scene.add(camera);
controls = new THREE.TrackballControls(camera, renderer.domElement);
controls.rotateSpeed = 0.3;
controls.noZoom = true;
controls.noPan = true;
controls.staticMoving = false;
controls.dynamicDampingFactor = 0.4;
zoomCamera(100);
clock = new THREE.Clock();
meshPlanet.rotation.y = 0;
meshClouds.rotation.y = 0;
rotationSpeed = 0.3
}
function addNewData() {
addData(locations);
}
var deleteMe = [];
function newDataCallback(node) {
if (node instanceof THREE.Line && node.name == "trackline") {
deleteMe.push(node);
}
if (node instanceof THREE.Mesh && node.name == "trackmarker") {
deleteMe.push(node);
}
}
function remAllData() {
THREE.SceneUtils.traverseHierarchy(scene, newDataCallback);
for (var each = 0; each < deleteMe.length; ++each) {
meshPlanet.remove(deleteMe[each]);
}
}
window.onload = function () {
if (!Detector.webgl) {
Detector.addGetWebGLMessage();
return;
}
init();
var num_new_data_adds = 5;
for (var i = 0; i < num_new_data_adds; ++i) {
addData(locations);
}
zoomToStart();
animate();
}
</script>
<body>
<div id="container" class="container"></div>
<!--<img class="cornered" src="textures/logo.png">-->
<div id="controls" class="show">
<div>
<a href="#" onClick="toggleRotation();" class="button rosy">Rotation</button></a>
<a href="#" onClick="zoomCamera(-1);" class="button blue">Zoom Out</button></a>
<a href="#" onClick="zoomCamera(+1);" class="button blue">Zoom In</button></a>
<a href="#" onClick="addNewData();" class="button green">Add</button></a>
<a href="#" onClick="remAllData();" class="button red">Remove All</button></a>
<a href="#" onClick="resetView();" class="button pink">Reset</button></a>
<a href="#" onClick="toggleHelp();" class="button orange">Help</button></a>
</div>
</div>
<div id="help" class="hide">
<h2>Instructions</h2>
<ul>
<li><font color="#da5867">Rotation</font> toggles rotation</li>
<li><font color="#0095cd">Zoom</font> view in and out</li>
<li><font color="#64991e">Add</font> random data sets</li>
<li><font color="#d81b21">Remove</font> all data</li>
<li><font color="#f895c2">Reset</font> everything</li>
<li><font color="#f78d1d">Help</font> toggle</li>
</ul>Contact me at <a href="mailto://callum@gmail.com?subject=WebGL">callum@gmail.com</a>.
<p>Many thanks to <a href="">Three.js</a>, <a href="">#three.js</a> and the authors of the wealth of example code out there I used to learn from - your generosity is appreciated.<p>
<font color="#699">Version 0.1.0</font>
</div>
</body>
</html>