import * as THREE from 'three'
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import Stats from 'three/addons/libs/stats.module.js';
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import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
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import TWEEN from '@tweenjs/tween.js';
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const help = false;
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export default class ShelfThree {
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constructor(dom) {
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this.dom = dom;
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this.fullWidth = dom.offsetWidth;
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this.fullHeight = dom.offsetHeight;
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this.objects = [];
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}
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startup = () => {
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this.scene = this.initScene();
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this.camera = this.initCamera();
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this.renderer = this.initRenderer();
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this.controls = this.initControls();
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this.stats = this.initStats();
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this.windowResize();
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this.initRaycaster();
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initLight(this.scene);
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this.animate();
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this.build();
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}
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animate = () => {
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this.animationFrame = requestAnimationFrame(this.animate);
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this.render();
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TWEEN.update();
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}
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render = () => {
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this.renderer.shadowMap.enabled = true;
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this.renderer.render(this.scene, this.camera);
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this.stats.update();
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// Rotate the scene
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this.controls.update()
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this.controls.autoRotateSpeed = 2;
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}
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addObject = (object) => {
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this.scene.add(object);
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this.objects.push(object);
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}
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initScene = () => {
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const scene = new THREE.Scene();
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// scene.background = new THREE.Color(0xf0f0f0);
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scene.background = new THREE.Color(0x333333);
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if (help) {
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scene.add(new THREE.AxesHelper(1000));
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}
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return scene;
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}
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initCamera = () => {
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const camera = new THREE.PerspectiveCamera(70, this.fullWidth / this.fullHeight, 1, 60000);
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camera.position.set(-300, 300, 300);
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this.scene.add(camera);
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return camera;
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}
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initRenderer = () => {
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const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
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renderer.setClearAlpha(0);
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// renderer.useLegacyLights = false; // 旧版光源 重要
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renderer.shadowMap.enabled = true;
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// this.renderer.shadowMap.type = THREE.BasicShadowMap; // 最低阴影
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// this.renderer.toneMapping = THREE.ReinhardToneMapping;
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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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renderer.setPixelRatio(window.devicePixelRatio);
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renderer.setSize(this.fullWidth, this.fullHeight);
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this.dom.appendChild(renderer.domElement);
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return renderer;
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}
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initControls = () => {
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const controls = new OrbitControls(this.camera, this.renderer.domElement);
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// controls.enableRotate = false; // 禁用整体旋转功能
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controls.enablePan = true; // 允许平移
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controls.enableDamping = true; // 开启阻尼
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controls.dampingFactor = 0.08; // 阻尼因子
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controls.enableZoom = true; // 允许缩放
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// controls.minDistance = 1; // 最小缩放距离
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// controls.maxDistance = 30; // 最大缩放距离
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controls.minPolarAngle = 0; // 最小俯仰角度（向下看）
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controls.maxPolarAngle = Math.PI / 2.1; // 最大俯仰角度（向上看）
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controls.rotateSpeed = 0.6; // 视角移动速度减慢
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controls.autoRotate = true; // 自动旋转
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controls.target = new THREE.Vector3(0, 0, 0) // 平替 camera的lookAt
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return controls;
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}
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initStats = () => {
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const stats = new Stats();
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this.dom.appendChild(stats.dom);
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if (!help) {
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stats.domElement.style.display = 'none';
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}
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return stats;
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}
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windowResize = () => {
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this.resizeHandler = () => {
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this.camera.aspect = this.fullWidth / this.fullHeight;
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this.camera.updateProjectionMatrix();
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this.renderer.setSize(this.fullWidth, this.fullHeight);
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};
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window.addEventListener('resize', this.resizeHandler, false);
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}
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initRaycaster = () => {
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let that = this;
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const raycaster = new THREE.Raycaster();
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const mouse = new THREE.Vector2();
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this.dom.addEventListener("click", (event) => {
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this.handleClick("null");
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})
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this.dom.addEventListener("dblclick", (event) => {
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let x, y;
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if (event.changedTouches) {
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x = event.changedTouches[0].pageX;
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y = event.changedTouches[0].pageY;
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} else {
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x = event.clientX;
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y = event.clientY;
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}
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event.preventDefault();
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mouse.x = (x / window.innerWidth) * 2 - 1;
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mouse.y = -(y / window.innerHeight) * 2 + 1;
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raycaster.setFromCamera(mouse, that.camera);
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let intersects = raycaster.intersectObjects(that.objects, true);
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if (intersects.length === 0) {
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this.handleClick("null");
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return;
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}
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let objName = intersects[0].object.name;
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if (objName.startsWith("locNo")) {
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if (this.handleClick) {
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this.handleClick(objName, x, y);
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}
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} else {
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this.handleClick("null");
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}
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}, false);
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}
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build = () => {
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buildDemo(this.scene);
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}
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handleClick = () => {
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}
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destroy = () => {
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cancelAnimationFrame(this.animationFrame);
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window.removeEventListener('resize', this.resizeHandler);
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if (this.scene) {
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while (this.scene.children.length > 0) {
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this.removeEntity(this.scene.children[0]);
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}
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this.scene = null;
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}
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if (this.renderer) {
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this.renderer.dispose();
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this.renderer.forceContextLoss();
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this.renderer.context = null;
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this.renderer.domElement = null;
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this.renderer = null;
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}
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if (this.controls) {
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this.controls.dispose();
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this.controls = null;
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}
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this.camera = null;
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this.objects = [];
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while (this.dom?.firstChild) {
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this.dom.removeChild(this.dom.firstChild);
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}
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}
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removeEntity = (object) => {
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if (object.material) object.material.dispose();
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if (object.geometry) object.geometry.dispose();
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if (object.texture) object.texture.dispose();
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this.scene.remove(object);
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}
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};
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const initLight = (scene) => {
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const directionalLight = new THREE.DirectionalLight(0xffffff, 8);
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directionalLight.position.set(-300, 300, 300);
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scene.add(directionalLight);
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const ambientLight = new THREE.AmbientLight(0xf0f0f0, 8);
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scene.add(ambientLight);
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const spotLight = new THREE.SpotLight(0xffffff, 8);
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spotLight.position.set(-300, 300, 0);
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spotLight.angle = Math.PI / 4; // 角度
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spotLight.distance = 800; // 距离
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spotLight.decay = 0; // 光衰
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// 光照阴影及其生效范围
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spotLight.castShadow = true;
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spotLight.shadow.camera.near = 50;
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spotLight.shadow.camera.far = 2000;
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spotLight.shadow.bias = - 0.000222;
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// 阴影特效高低值
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spotLight.shadow.mapSize.width = 1024;
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spotLight.shadow.mapSize.height = 1024;
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scene.add(spotLight);
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if (help) {
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scene.add(new THREE.SpotLightHelper(spotLight));
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}
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}
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const buildDemo = (scene) => {
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const boxGeometry = new THREE.BoxGeometry(100, 100, 100);
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const boxMaterial = new THREE.MeshStandardMaterial({
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color: '#222f3e',
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});
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const boxMesh = new THREE.Mesh(boxGeometry, boxMaterial);
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boxMesh.position.set(0, 0, 0);
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scene.add(boxMesh)
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return boxMesh;
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}
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