threejs demo

发布时间：2024年01月17日

记录：

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<title>three.js css2d - label</title>
		<link type="text/css" rel="stylesheet" href="main.css">
		<style>
			body{
				background-color: #fff!important;
			}
		</style>
	</head>
	<body>
		<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import { OrbitControls } from './jsm/controls/OrbitControls.js';

			let camera, scene, renderer;

			const textureLoader = new THREE.TextureLoader();

			init();
			animate();

			function init() {
				// 场景
				scene = new THREE.Scene();
				scene.background = new THREE.Color(0xffffff); // 设置场景背景颜色

				// 相机   (fov, aspect, near, far)
				camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 0.1, 200 );
				camera.position.set( 10, 5, 20 );

				// 创建环境光
				const light = new THREE.AmbientLight(0xffffff, 1)
				scene.add(light)

				// 渲染器
				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );

				//辅助器3维坐标
				const axesHelper = new THREE.AxesHelper( 5 );
				axesHelper.layers.enableAll();
				scene.add( axesHelper );

				// 物体
				const cubeGeometry = new THREE.BoxGeometry(1,1,1)
				const cubeMaterial = new THREE.MeshBasicMaterial({color: 0xffff00})
				const cube = new THREE.Mesh(cubeGeometry, cubeMaterial)
				scene.add( cube );

				// 控制器
				const controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 5;
				controls.maxDistance = 100;

				// 平行光源
				// const dirLight = new THREE.DirectionalLight( 0xffffff );
				// dirLight.position.set( 2, 2, 2 );
				// scene.add( dirLight );

				// // 平行光源辅助线
				// const directionalLightHelper = new THREE.DirectionalLightHelper(dirLight, .5)
				// directionalLightHelper.visible = true
				// scene.add(directionalLightHelper)

				window.addEventListener( 'resize', onWindowResize );
			}

			function onWindowResize() {
				camera.updateProjectionMatrix();
				renderer.setSize( window.innerWidth, window.innerHeight );
			}
			// 持续渲染
			function animate() {
				requestAnimationFrame( animate );
				renderer.render( scene, camera );
			}

		</script>
	</body>
</html>

基础3D页面，场景，光源，相机，渲染器等的基础配置。
在这里插入图片描述

文章来源:https://blog.csdn.net/qq_40544434/article/details/135336989
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