1.     //场景
    2.     const scene = new THREE.Scene();
    4.     //几何体
    5.     const geometry = new THREE.CubeGeometry(2,5,2)
    6.     //材质
    7.     const meterial = new THREE.MeshBasicMaterial({color:'orange'});
    8.     //模型
    9.     const cube = new THREE.Mesh(geometry,meterial)
    10.     //模型添加到场景
    11.     scene.add(cube)
    13.     //相机
    14.     const camera = new THREE.PerspectiveCamera(75,window.innerWidth/window.innerHeight,1,1000);
    15.     //相机位置
    16.     camera.position.z = 10
    18.     //渲染器
    19.     const renderer = new THREE.WebGLRenderer()
    20.     renderer.setClearColor('#ffffff')
    21.     renderer.setSize(window.innerWidth,window.innerHeight)
    22.     document.body.appendChild(renderer.domElement)
    24.     //渲染
    25.     function render(){
    26.         requestAnimationFrame(render)
    27.         cube.rotation.y += 0.01;
    28.         renderer.render(scene,camera)
    29.     }
    30.     render();