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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body,
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#box {
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width: 100%;
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height: 100%;
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}
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</style>
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</head>
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<body>
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<div id="box"></div>
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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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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'
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import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js'
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const box = document.getElementById('box')
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const scene = new THREE.Scene()
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// 相机
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const camera = new THREE.PerspectiveCamera(75, box.clientWidth / box.clientHeight, 0.1, 1000)
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camera.position.set(5, 5, 5)
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// 渲染器
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const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true, logarithmicDepthBuffer: true })
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// 环境光
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scene.add(new THREE.AmbientLight(0xffffff, 4))
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// 参考线
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scene.add(new THREE.AxesHelper(1000))
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/*
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包围盒两种写法
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*/
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//写法一
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// const box3 = new THREE.Box3(
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// new THREE.Vector3(-1, -1, -1),
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// new THREE.Vector3(1, 1, 1)
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// );
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// 写法2
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const box3 = new THREE.Box3()
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box3.min = new THREE.Vector3(-2, -2, -3);
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box3.max = new THREE.Vector3(5, 2, 5);
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console.log('查看包围盒', box3);
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const size = new THREE.Vector3()
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box3.getSize(size)
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console.log('模型包围盒尺寸', size);
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const center = new THREE.Vector3()
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box3.getCenter(center)
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console.log('模型中心坐标', center);
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const boxGeometry = new THREE.BoxGeometry(size.x, size.y, size.z);
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const material = new THREE.MeshBasicMaterial({
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color: 0xff0000, // 红色
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transparent: true, // 启用透明度
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opacity: 0.3 // 设置透明度
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});
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const box1 = new THREE.Mesh(boxGeometry, material);
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box1.position.copy(center); //拷贝位置
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scene.add(box1);
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renderer.setSize(box.clientWidth, box.clientHeight)
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box.appendChild(renderer.domElement)
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new OrbitControls(camera, renderer.domElement)
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animate()
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function animate() {
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requestAnimationFrame(animate)
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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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