three.js通过objloader导入模型后，如何通过physijs使模型具有物理效果？

<script src="three.js"></script>
<script src="objloader.js"></script>

var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

var loader = new THREE.OBJLoader();
loader.load('model.obj', function (object) {
    scene.add(object);
});

<script src="physijs_worker.js"></script>
<script src="physijs.js"></script>

var physiScene = new Physijs.Scene();
var physiObject = new Physijs.BoxMesh(
    new THREE.BoxGeometry(1, 1, 1),
    new THREE.MeshBasicMaterial({ color: 0x00ff00 })
);
physiScene.add(physiObject);

function animate() {
    requestAnimationFrame(animate);
    renderer.render(scene, camera);
    physiScene.simulate(); // 更新物理效果
}
animate();