您可以通过将 .dae 数据加载到可配置的文件中来替换页面中心显示的模型THREE.ColladaLoader()对象的方式与loader.load在您的原始代码中使用。
在下面的示例中，单击事件绑定到两个按钮。它们会触发一个删除当前模型的函数。然后加载相关的 .dae 文件并将所需的模型添加到场景中。 （请注意，我在标记中保留了 HTML 问题，例如未封闭的 div。）
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<title>Visualising Cells</title>
<meta charset="UTF-8">
<link rel="stylesheet" href="style.css">
<script src="three.js"></script>
<script src="ColladaLoader.js"></script>
</head>
<body>
<script src="js/controls/OrbitControls.js"></script>
<script>
var myModel; // used to reference the most recently-loaded model
$(document).ready(function() {
// when the page has loaded, add click functions to the two buttons
$("#LBC").click(function() {
toggleModel("bloodexternalcontent");
});
$("#LEC").click(function() {
toggleModel("egg2");
});
});
function toggleModel(modelName) {
// remove the existing model from the scene
scene.remove(myModel);
// add the chosen model
loadModel(modelName);
}
function loadModel(modelName) {
// add the specified model
loader.load(modelName+'.DAE', function (collada) {
myModel = collada.scene;
myModel.position.x = 0;
myModel.position.y = 0;
myModel.position.z = 0;
myModel.updateMatrix();
scene.add(myModel);
});
}
var width = window.innerWidth;
var height = window.innerHeight;
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.01, 500 );
camera.position.z = 0.16;
camera.position.x = 0;
camera.position.y = 0;
scene.add(camera);
var controls = new THREE.OrbitControls( camera );
var renderer=new THREE.WebGLRenderer();
renderer.setSize(width,height);
document.body.appendChild(renderer.domElement);
renderer.render(scene,camera);
renderer.setClearColor("rgb(181,181,181)");
light = new THREE.DirectionalLight(0xffffff);
light.position.set(1, 1, 1);
scene.add(light);
light = new THREE.DirectionalLight(0xffffff);
light.position.set(0, 0, 0.14);
scene.add(light);
var loader = new THREE.ColladaLoader();
// load the default model
loadModel("egg2");
document.addEventListener('keydown', function(event) {
console.log(camera.position.z);
if (event.keyCode == 38) {
// don't scroll the window
console.log("Up Arrow Pressed");
event.preventDefault();
if (camera.position.z >= 0.1) {
camera.position.z = camera.position.z - 0.01;
}
}
else if (event.keyCode == 40) {
// don't scroll the window
event.preventDefault();
console.log("Down Arrow Pressed")
if (camera.position.z < 0.2) {
camera.position.z = camera.position.z + 0.01;
}
}
}, true);
render = function () {
requestAnimationFrame(render);
// object.rotation.x += 0.0;
// object.rotation.y += 0.0;
renderer.render(scene, camera);
// controls.update();
};
controls.addEventListener('change', render );
render();
</script>
<div class="float-btn">
<button type="button" id="LBC">Load Red Blood Cell</button>
<button type="button" id="LEC">Load Egg Cell</button>
</div>
<div class="float-txt">
<div style="color:#000000">
<div style="font-family: Arial">
<div style="font-size: 18px">
<div style="text-decoration: underline">
<h1>Visualising Microscopic Cells</h1>
</div>
<div class="instructions">
<div style="color:#000000">
<div style="font-family: Arial">
<div style="font-size: 16px">
<div style="text-decoration: underline">
<h2>Instructions</h2>
</div>
<div class="instruction-txt">
<div style="color:#000000">
<div style="font-family: Arial">
<div style="font-size: 14px">
<p><u>Zoom In:</u> <strong>Up Arrow</strong> <br><u>Zoom Out:</u> <strong>Down Arrow</strong></br></p>
</div>
<div class="Model-Location" id="target">
</div>
</body>
</html>
