将div.js动画放入div中

Question

这是three.js动画代码示例:

<script defer="defer">
  var angularSpeed = 0.2; 
  var lastTime = 0;
  function animate(){
    var time = (new Date()).getTime();
    var timeDiff = time - lastTime;
    var angleChange = angularSpeed * timeDiff * 2 * Math.PI / 1000;
    plane.rotation.z += angleChange;
    lastTime = time;
    renderer.render(scene, camera);
    requestAnimationFrame(function(){
        animate();
    });
  }
  var renderer = new THREE.WebGLRenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  document.body.appendChild(renderer.domElement);
  var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 1000);
  camera.position.y = -450;
  camera.position.z = 400;
  camera.rotation.x = 45 * (Math.PI / 180);
  var scene = new THREE.Scene();
  var plane = new THREE.Mesh(new THREE.PlaneGeometry(300, 300), new THREE.MeshNormalMaterial());
  plane.overdraw = true;
  scene.add(plane);
  animate();
 </script>

我想通过div id将这个动画代码绑定到某个特定的div.因此,动画将显示在div内部.这将允许我使用css轻松操纵动画位置.我记得这样的事情:

HTML:

<canvas id="myCanvas" width="578" height="200"></canvas>

JavaScript的:

var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
// do stuff here

但我还没有办法用three.js做这样的事情.正如您在代码示例中所看到的,我没有可以引用的canvas元素.有任何想法吗？

Answer 1

您可以使用如下模式:

<div id="canvas">

#canvas {
    background-color: #000;
    width: 200px;
    height: 200px;
    border: 1px solid black;
    margin: 100px;
    padding: 0px;
    position: static; /* fixed or static */
    top: 100px;
    left: 100px;
}

container = document.getElementById( 'canvas' );
document.body.appendChild( container );

renderer = new THREE.WebGLRenderer();
renderer.setSize( 200, 200 );
container.appendChild( renderer.domElement );

小提琴:http://jsfiddle.net/fek9ddg5/1/

另请参阅THREE.js Ray Intersect通过添加div失败

three.js r.69