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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}
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body,
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.box {
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width: 100%;
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background-color: #1f1f1f;
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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 class="box" 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 { CSS3DRenderer, CSS3DObject, CSS3DSprite } from 'three/addons/renderers/CSS3DRenderer.js';
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let objects = [];
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let selectedObject = null;
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let box = document.getElementById("box")
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const scene = new THREE.Scene();// 创建场景
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// 辅助线
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const axesHelper = new THREE.AxesHelper(150);
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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(400, 300, 500); //相机位置
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camera.lookAt(0, 50, 40); //相机观察位置
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// 渲染器
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let renderer = new THREE.WebGLRenderer({})
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renderer.setSize(window.innerWidth, window.innerHeight)
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box.appendChild(renderer.domElement)
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// 添加模型
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const geometry1 = new THREE.BoxGeometry(10, 10, 10);
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const geometry2 = new THREE.SphereGeometry(10);
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const geometry3 = new THREE.CylinderGeometry(10, 10, 100);
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const material = new THREE.MeshBasicMaterial({ color: 0xff0000 });
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const mesh1 = new THREE.Mesh(geometry1, material);
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mesh1.position.set(0, 0, 0);
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const mesh2 = new THREE.Mesh(geometry2, material);
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mesh2.position.set(0, 0, 30);
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const mesh3 = new THREE.Mesh(geometry3, material);
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mesh3.position.set(0, 0, 60);
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scene.add(mesh1);
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scene.add(mesh2);
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scene.add(mesh3);
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objects.push(mesh1)
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objects.push(mesh2)
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objects.push(mesh3)
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// 监听鼠标点击事件
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window.addEventListener('mousedown', onDocumentClick, false);
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function onDocumentClick(event) {
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event.preventDefault();
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// 计算鼠标点击位置对应的坐标
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const mouse = new THREE.Vector2();
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mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
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mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
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// 创建射线
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const raycaster = new THREE.Raycaster();
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raycaster.setFromCamera(mouse, camera);
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// 执行射线投射并与场景中的物体相交测试
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const intersects = raycaster.intersectObjects(objects);
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if (intersects.length > 0) {
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// 显示被选中的物体
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selectedObject = intersects[0].object;
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console.log(selectedObject)
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} else {
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selectedObject = null;
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}
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}
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function render() {
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// 清除上次高亮
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objects.forEach((e)=>{
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e.material = new THREE.MeshBasicMaterial({ color: 0xff0000 })
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})
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if (selectedObject) {
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selectedObject.material = new THREE.MeshBasicMaterial({ color: 0xffff00 })
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}
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renderer.render(scene, camera)
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requestAnimationFrame(render);
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}
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render();
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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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</script>
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</body>
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</html>
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