Threejs 实现3D 地图（01）创建基本场景

"d3": "^7.9.0",
"three": "^0.169.0",
"vue": "^3.5.10"

<script setup>
import { onMounted,ref } from 'vue'
import * as THREE from 'three'
import * as d3 from "d3";  //莫开托坐标 矫正地图坐标
import map from './constant/map.json'
// 引入轨道控制器扩展库OrbitControls.js
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
// 拿到页面的宽高
const width = window.innerWidth, height = window.innerHeight;// 创建场景
const scene = new THREE.Scene();
// 将背景颜色设置为白色
scene.background = new THREE.Color("#000000");// 创建相机
const camera = new THREE.PerspectiveCamera(70, width / height, 0.01, 10000);
// 设置相机位置
camera.position.z = 1000;// // 辅助线 AxesHelper
const axesHelper = new THREE.AxesHelper( 500 );
scene.add( axesHelper );// 初始化渲染器
const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(width, height);// 设置相机控件轨道控制器OrbitControls
const controls = new OrbitControls(camera, renderer.domElement);
//阻尼 更真实
controls.enableDamping = trueconst initGeom = () => {// 添加一个物体（测试是否显示）const geometry = new THREE.BoxGeometry( 200, 200,200 );const material = new THREE.MeshBasicMaterial( {color: 0x00ff00} );const cube = new THREE.Mesh( geometry, material );scene.add( cube );
}// 渲染页面
const render = () => {// 将场景（scene）和摄像机（camera 加入进来）renderer.render(scene, camera)// 渲染下一帧的时候会调用render函数requestAnimationFrame(render)controls.update()
}const initLight = () => {// 基本光源const ambLight = new THREE.AmbientLight('#ffffff', 0.3)/*** 设置聚光灯相关的的属性*/const spotLight = new THREE.SpotLight(0xFFFFFF); // 聚光灯spotLight.position.set(40, 200, 10);spotLight.castShadow = true; // 只有该属性为true时，该点光源允许产生阴影，并且下列属性可用scene.add(ambLight, spotLight); // 向场景中添加光源
}onMounted(() => {// 添加物体到场景initGeom()// 渲染render()// 设置环境光initLight()// 将渲染加入到页面上document.body.appendChild(renderer.domElement);
})
</script><template><div id="info"></div>
</template><style scoped></style>

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