初始化三维场景

function init() {container = document.getElementById('container');camera = new THREE.PerspectiveCamera(65, window.innerWidth / window.innerHeight, 0.1, 150000000);camera.position.set(550, 600, 690);scene = new THREE.Scene();// scene.background = new THREE.Color(0x426ab3);scene.background = new THREE.Color(0x0);renderer = new THREE.WebGLRenderer({//logarithmicDepthBuffer: true,  // 使用精度更高的z缓冲antialias: true,  // 设置抗锯齿，alpha: true       // 是否可以设置背景色透明。必须设置为true，才能出现镜头光晕效果});renderer.setPixelRatio(window.devicePixelRatio);renderer.setSize(window.innerWidth, window.innerHeight);container.appendChild(renderer.domElement);// const light = new THREE.HemisphereLight(0xffffff, 0x909090, 0.8);// scene.add(light);const light = new THREE.AmbientLight( 0xffffff,1 ); // soft white lightscene.add( light );const directionalLight = new THREE.DirectionalLight(0xffffff, 0.5);directionalLight.position.set(550, 4600, 690);scene.add(directionalLight);const light2 = new THREE.PointLight( 0xffffff, 0.25 );light2.position.set( 1550, 3500, 0 );scene.add( light2 );controls = new THREE.OrbitControls(camera, renderer.domElement);// controls.minDistance = 1;// controls.maxDistance = 100000;controls.target.set(0, 1, 0);controls.update();stats = new Stats();container.appendChild(stats.dom);window.addEventListener('resize', onWindowResize, false);}

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