先放一下预览图
主要使用css2dRender和css3dRender，添加图片和标签。
思路：使用css3dRender添加一个图片，然后获取的位置坐标，使用css3dRender添加一个文字标签，也设置这个位置坐标，此外z轴设置一个高度，这样就可以放在图片的正上方。图片添加一个点击事件，点击之后会出现一个弹窗。海岛介绍文本框，使用css2dRender。
下面的通过css3dRender创建的html标签，都是放到了模型上面，这个要注意，不是放在场景scene里面。
使用css3dRender添加图片
addimg(img, fun) {
const imgDiv = document.createElement('div');
imgDiv.style.width = '25px';
imgDiv.style.height = '25px';
imgDiv.style.backgroundImage = `url(${img})`;
imgDiv.style.backgroundSize = 'contain';
imgDiv.style.backgroundRepeat = 'no-repeat';
imgDiv.style.cursor = 'pointer'; // 鼠标悬停时显示为手型
imgDiv.style.zIndex = '1000'
imgDiv.addEventListener('click', fun)
const imgLabel = new CSS3DObject(imgDiv);
imgLabel.position.set(1, 0, 0);
return imgLabel
},
使用css3dRender添加文本
addtext(text) {
// 创建第二个文本标签
const labelDiv = document.createElement('div');
labelDiv.innerHTML = text;
labelDiv.style.color = 'white';
labelDiv.style.fontSize = '5px';
labelDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';
labelDiv.style.padding = '2px';
labelDiv.style.borderRadius = '3px';
const label = new CSS3DObject(labelDiv);
label.position.set(0, 1, 0); // 相对于模型的局部位置
return label
},
这里有一点需要注意一下，就是添加渲染器css3dRender，他会增加一个html标签，默认会叠加到父元素canvas上面，这样就会导致鼠标缩放，模型无法缩放，所以需要设置pointerEvents属性为none，解决html标签对画布的遮盖。对于具体添加的某个css3dObject对象，我们可以看需求，然后决定是否添加 div.style.pointerEvents = 'none'; 如果添加了，就是说对这个html标签设置任何点击事件，都无法起作用。
添加一个obj格式的模型，这里之前写过一篇文章，写了如何引入如何在three.js里面导入obj的三维模型_threejs 加载obj模型-CSDN博客
addmodel() {
// 加载三维模型
let obj;
const mtlLoader = new MTLLoader();
mtlLoader.load(blockmtl, (materials) => {
const objLoader = new OBJLoader();
objLoader.setMaterials(materials);
objLoader.load(block, (loadedObj) => {
obj = loadedObj;
obj.rotation.x = -20 * (Math.PI / 180);
obj.position.set(-2, 2, 0);
obj.scale.set(0.02, 0.02, 0.02);
// 创建文字标签
const labelDiv = document.createElement('div');
// labelDiv.className = 'label';
labelDiv.innerHTML = `海岛介绍</br>这是被海水围绕的小块陆地`;
labelDiv.style.color = 'white';
labelDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';
labelDiv.style.padding = '9px';
labelDiv.style.borderRadius = '5px';
const label = new CSS2DObject(labelDiv);
labelDiv.style.pointerEvents = 'none'
label.position.set(0, 0, 0); // 相对于模型的局部位置
obj.add(label);
// 创建图片标签
let imgLabel1 = this.addimg(img1, () => {
window.location.href = 'https://baidu.com';
})
obj.add(imgLabel1);
imgLabel1.position.y -= 70
imgLabel1.position.x += 90
let imgLabel2 = this.addimg(img2, () => {
this.showImageInfo('https://www.baidu.com')
})
obj.add(imgLabel2);
imgLabel2.position.y -= 120
imgLabel2.position.x += 140
// 创建文字标签
let label1 = this.addtext('电箱')
obj.add(label1);
label1.position.copy(imgLabel2.position); // 复制图片的位置
label1.position.y += 20; // 向上偏移
let label2 = this.addtext('路牌')
obj.add(label2);
label2.position.copy(imgLabel1.position); // 复制图片的位置
label2.position.y += 20; // 向上偏移
this.scene.add(obj);
});
});
},
<template><div class="box"><div id="wbglg" style="margin-top: 100px;"></div></div>
</template><script>
import * as THREE from 'three';
import { CSS2DRenderer, CSS2DObject } from 'three/examples/jsm/renderers/CSS2DRenderer.js';
import { CSS3DRenderer, CSS3DObject } from 'three/examples/jsm/renderers/CSS3DRenderer.js';
import { OBJLoader } from 'three/examples/jsm/loaders/OBJLoader';
import { MTLLoader } from 'three/examples/jsm/loaders/MTLLoader';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls';
import block from '../../public/obj/block/block.obj'
import blockmtl from '../../public/obj/block/block.mtl'
import img1 from '../assets/ganzi.png'
import img2 from '../assets/gaungai.png'export default {name: "TestS",components: {},mounted() {this.init()},data() {return {controls: "",scene: '',renderer: '',camera: '',css2DRenderer: '',css3DRenderer: '',}},methods: {showImageInfo(detailUrl) {// 创建弹窗const popup = document.createElement('div');popup.style.position = 'fixed';popup.style.top = '60%';popup.style.left = '51%';popup.style.transform = 'translate(-50%, -50%)';popup.style.backgroundColor = 'rgba(0, 0, 0, 0.8)'; // 半透明黑色背景popup.style.padding = '5px';popup.style.borderRadius = '10px'; // 圆角popup.style.boxShadow = '0 0 10px rgba(255, 255, 255, 0.2)'; // 白色阴影popup.style.zIndex = '1000';popup.style.fontSize = '14px';popup.style.color = 'white'; // 文字颜色popup.style.fontFamily = 'Arial, sans-serif'; // 字体popup.style.width = '190px'; // 弹窗宽度popup.style.textAlign = 'center'; // 文字居中// 创建关闭按钮（叉号）const closeButton = document.createElement('div');closeButton.innerHTML = '×'; // 叉号closeButton.style.position = 'absolute';closeButton.style.top = '10px';closeButton.style.right = '10px';closeButton.style.cursor = 'pointer'; // 鼠标悬停时显示为手型closeButton.style.fontSize = '24px'; // 叉号大小closeButton.style.color = 'white'; // 叉号颜色closeButton.style.userSelect = 'none'; // 禁止选中文本// 点击关闭按钮时移除弹窗closeButton.addEventListener('click', () => {document.body.removeChild(popup);});// 弹窗内容popup.innerHTML = `<h3>电箱信息</h3><p>状态：正常</p><p>管理人：张三</p><p>联系电话：12323232323</p><p style="color: #1E90FF; cursor: pointer;" onclick="window.open('${detailUrl}', '_blank')">点击查看详情</p>`;// 将关闭按钮添加到弹窗中popup.appendChild(closeButton);// 将弹窗添加到页面中document.body.appendChild(popup);},addmodel() {// 加载三维模型let obj;const mtlLoader = new MTLLoader();mtlLoader.load(blockmtl, (materials) => {const objLoader = new OBJLoader();objLoader.setMaterials(materials);objLoader.load(block, (loadedObj) => {obj = loadedObj;obj.rotation.x = -20 * (Math.PI / 180);obj.position.set(-2, 2, 0);obj.scale.set(0.02, 0.02, 0.02);// 创建文字标签const labelDiv = document.createElement('div');// labelDiv.className = 'label';labelDiv.innerHTML = `海岛介绍</br>这是被海水围绕的小块陆地`;labelDiv.style.color = 'white';labelDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';labelDiv.style.padding = '9px';labelDiv.style.borderRadius = '5px';const label = new CSS2DObject(labelDiv);labelDiv.style.pointerEvents = 'none'label.position.set(0, 0, 0); // 相对于模型的局部位置obj.add(label);// 创建图片标签let imgLabel1 = this.addimg(img1, () => {window.location.href = 'https://baidu.com';})obj.add(imgLabel1);imgLabel1.position.y -= 70imgLabel1.position.x += 90let imgLabel2 = this.addimg(img2, () => {this.showImageInfo('https://www.baidu.com')})obj.add(imgLabel2);imgLabel2.position.y -= 120imgLabel2.position.x += 140// 创建文字标签let label1 = this.addtext('电箱')obj.add(label1);label1.position.copy(imgLabel2.position); // 复制图片的位置label1.position.y += 20; // 向上偏移let label2 = this.addtext('路牌')obj.add(label2);label2.position.copy(imgLabel1.position); // 复制图片的位置label2.position.y += 20; // 向上偏移this.scene.add(obj);});});},animate() {requestAnimationFrame(this.animate);this.controls.update();this.renderer.render(this.scene, this.camera);this.css2DRenderer.render(this.scene, this.camera); // 更新 CSS2D 标签this.css3DRenderer.render(this.scene, this.camera); // 更新 CSS3D 标签},addtext(text) {const labelDiv = document.createElement('div');labelDiv.innerHTML = text;labelDiv.style.color = 'white';labelDiv.style.fontSize = '5px';labelDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';labelDiv.style.padding = '2px';labelDiv.style.borderRadius = '3px';const label = new CSS3DObject(labelDiv);label.position.set(0, 1, 0); // 相对于模型的局部位置return label},addimg(img, fun) {const imgDiv = document.createElement('div');imgDiv.style.width = '25px';imgDiv.style.height = '25px';imgDiv.style.backgroundImage = `url(${img})`;imgDiv.style.backgroundSize = 'contain';imgDiv.style.backgroundRepeat = 'no-repeat';imgDiv.style.cursor = 'pointer'; // 鼠标悬停时显示为手型imgDiv.style.zIndex = '1000'imgDiv.addEventListener('click', fun)const imgLabel = new CSS3DObject(imgDiv);imgLabel.position.set(1, 0, 0);return imgLabel},init() {this.scene = new THREE.Scene();this.camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);this.renderer = new THREE.WebGLRenderer({ alpha: true });this.renderer.setSize(window.innerWidth, window.innerHeight);document.querySelector("#wbglg").appendChild(this.renderer.domElement);// 创建 CSS2DRendererthis.css2DRenderer = new CSS2DRenderer();this.css2DRenderer.setSize(window.innerWidth, window.innerHeight);this.css2DRenderer.domElement.style.position = 'absolute';this.css2DRenderer.domElement.style.top = '0px';this.css2DRenderer.domElement.style.left = '0px';this.css2DRenderer.domElement.style.pointerEvents = 'none'document.body.appendChild(this.css2DRenderer.domElement);// 创建 CSS3DRendererthis.css3DRenderer = new CSS3DRenderer();this.css3DRenderer.setSize(window.innerWidth, window.innerHeight);this.css3DRenderer.domElement.style.position = 'absolute';this.css3DRenderer.domElement.style.top = '0px';this.css3DRenderer.domElement.style.left = '0px';this.css3DRenderer.domElement.style.pointerEvents = 'none'document.body.appendChild(this.css3DRenderer.domElement);// 添加模型this.addmodel()// 光源const light = new THREE.DirectionalLight(0xffffff);light.position.set(20, 10, 1305);this.scene.add(light);// 相机位置this.camera.position.set(0, 0, 5);// 加载场景控制插件this.controls = new OrbitControls(this.camera, this.renderer.domElement);this.controls.enableZoom = true; // 启用缩放this.controls.minDistance = 1; // 最小缩放距离this.controls.maxDistance = 100; // 最大缩放距离this.controls.enableDamping = true; // 启用阻尼效果this.controls.dampingFactor = 0.05; // 阻尼系数// 渲染循环this.animate();},},
}
</script>
<style scoped></style>
