2025-03-11 08:25:45 +00:00
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<!--********************************************************************
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* by jiawanlong
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*********************************************************************-->
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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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<style>
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* {
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margin: 0;
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padding: 0;
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overflow: hidden;
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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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2025-03-19 03:00:22 +00:00
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"three": "./../../libs/three/build/three.module.js",
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"three/addons/": "./../../libs/three/examples/jsm/"
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2025-03-11 08:25:45 +00:00
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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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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const getColor = () => '#' + Math.floor(Math.random() * 0xffffff).toString(16).padStart(6, '0')
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// 场景
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const scene = new THREE.Scene();// 创建场景
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const geometry = new THREE.BoxGeometry(5, 5, 5);
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for (let i = 0; i < 10; i++) {
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for (let j = 0; j < 10; j++) {
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for (let k = 0; k < 10; k++) {
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const material = new THREE.MeshBasicMaterial({ color: getColor() }); //材质
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const mesh = new THREE.Mesh(geometry, material);
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mesh.position.set(i * 20, k * 20, j * 20);
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scene.add(mesh);
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}
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}
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}
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// AxesHelper
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const axesHelper = new THREE.AxesHelper(300);
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scene.add(axesHelper);
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// 相机
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const camera = new THREE.PerspectiveCamera(); //相机
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camera.position.set(125, 253, 583); //相机位置
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camera.lookAt(0, 0, 0); //相机位置
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// window.camera = camera
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// 渲染器
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const renderer = new THREE.WebGLRenderer();
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renderer.setSize(window.innerWidth, window.innerHeight);
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renderer.render(scene, camera);
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document.body.appendChild(renderer.domElement);
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const controls = new OrbitControls(camera, renderer.domElement);
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controls.addEventListener('change', function () {
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renderer.render(scene, camera);
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});
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// Canvas画布跟随窗口变化
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window.onresize = function () {
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const s = 50;
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const width = window.innerWidth; //canvas画布宽度
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const height = window.innerHeight; //canvas画布高度
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// 1. WebGL渲染器渲染的Cnavas画布尺寸更新
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renderer.setSize(width, height);
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// 2.1.更新相机参数
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const k = width / height; //canvas画布宽高比
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camera.left = -s * k;
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camera.right = s * k;
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// 2.2.相机的left, right, top, bottom属性变化了，通知threejs系统
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camera.updateProjectionMatrix();
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renderer.render(scene, camera);
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};
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</script>
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</body>
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</html>
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