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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<title>three.js css2d - label</title>
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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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.label {
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color: #FFF;
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font-family: sans-serif;
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padding: 2px;
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background: transparent;
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}
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.content {
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background: red;
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}
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</style>
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</head>
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<body>
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<script type="importmap">
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{
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"imports": {
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"three": "https://unpkg.com/three@0.163.0/build/three.module.js",
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"three/addons/": "https://unpkg.com/three@0.163.0/examples/jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import {
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OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import {
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CSS2DRenderer, CSS2DObject } from 'three/addons/renderers/CSS2DRenderer.js';
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import {
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GUI } from 'three/addons/libs/lil-gui.module.min.js';
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let gui;
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let camera, scene, renderer, labelRenderer;
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const layers = {
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'Toggle Name': function () {
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camera.layers.toggle(0);
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},
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'Toggle Mass': function () {
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camera.layers.toggle(1);
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},
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'Enable All': function () {
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camera.layers.enableAll();
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},
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'Disable All': function () {
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camera.layers.disableAll();
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}
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};
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init();
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function init() {
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// 设置地球半径大小
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const EARTH_RADIUS = 2;
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// 定义相机和场景
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camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 200);
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camera.position.set(10, 5, 20);
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camera.layers.enableAll();
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scene = new THREE.Scene();
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// 添加光源和坐标轴助手
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const dirLight = new THREE.DirectionalLight(0xffffff, 3);
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dirLight.position.set(0, 0, 1);
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dirLight.layers.enableAll();
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scene.add(dirLight);
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// 创建地球对象，并设置材质
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const earthGeometry = new THREE.SphereGeometry(EARTH_RADIUS, 16, 16);
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const textureLoader = new THREE.TextureLoader();
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const earthMaterial = new THREE.MeshPhongMaterial({
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specular: 0x333333,
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shininess: 5,
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map: textureLoader.load('./textures/earth_atmos_2048.jpg'),
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specularMap: textureLoader.load('./textures/earth_specular_2048.jpg'),
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normalMap: textureLoader.load('./textures/earth_normal_2048.jpg'),
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normalScale: new THREE.Vector2(0.85, 0.85)
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});
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// 设置地球材质的贴图颜色空间为SRGB色彩空间
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earthMaterial.map.colorSpace = THREE.SRGBColorSpace;
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// 创建地球mesh对象
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const earth = new THREE.Mesh(earthGeometry, earthMaterial);
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earth.layers.enableAll();
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scene.add(earth);
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const earthDiv = document.createElement('div');
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earthDiv.className = 'label';
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earthDiv.innerHTML = `<div>地球<span style='color:red'>简介</span></div>`;
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const earthLabel = new CSS2DObject(earthDiv);
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earthLabel.position.set(1.5 * EARTH_RADIUS, 0, 0);
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earthLabel.center.set(0, 1);
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earth.add(earthLabel);
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earthLabel.layers.set(0);
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const earthMassDiv = document.createElement('div');
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earthMassDiv.className = 'content';
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earthMassDiv.innerHTML = `<div>重所周知,地球是地球!望周知!</div>`;
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const earthMassLabel = new CSS2DObject(earthMassDiv);
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earthMassLabel.position.set(1.5 * EARTH_RADIUS, 0, 0);
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earthMassLabel.center.set(0, 0);
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earth.add(earthMassLabel);
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earthMassLabel.layers.set(1);
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//
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio(window.devicePixelRatio);
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renderer.setSize(window.innerWidth, window.innerHeight);
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document.body.appendChild(renderer.domElement);
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labelRenderer = new CSS2DRenderer();
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labelRenderer.setSize(window.innerWidth, window.innerHeight);
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labelRenderer.domElement.style.position = 'absolute';
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labelRenderer.domElement.style.top = '0px';
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document.body.appendChild(labelRenderer.domElement);
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const controls = new OrbitControls(camera, labelRenderer.domElement);
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controls.minDistance = 5;
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controls.maxDistance = 100;
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window.addEventListener('resize', onWindowResize);
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initGui();
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animate();
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize(window.innerWidth, window.innerHeight);
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labelRenderer.setSize(window.innerWidth, window.innerHeight);
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}
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function animate() {
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requestAnimationFrame(animate)
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renderer.render(scene, camera);
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labelRenderer.render(scene, camera);
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}
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function initGui() {
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gui = new GUI();
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gui.title('Camera Layers');
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gui.add(layers, 'Toggle Name');
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gui.add(layers, 'Toggle Mass');
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gui.add(layers, 'Enable All');
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gui.add(layers, 'Disable All');
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gui.open();
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}
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</script>
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</body>
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</html>
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