边缘几何体与线框几何体
代码
js
import * as THREE from 'three'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js'
import { GUI } from 'three/examples/jsm/libs/lil-gui.module.min.js';
import { RGBELoader } from 'three/examples/jsm/loaders/RGBELoader.js';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
import { DRACOLoader } from 'three/examples/jsm/loaders/DRACOLoader.js';
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(
45,
window.innerWidth / window.innerHeight,
0.1,
1000
)
const renderer = new THREE.WebGLRenderer()
renderer.setSize(window.innerWidth, window.innerHeight)
document.body.appendChild(renderer.domElement)
camera.position.z = 5;
camera.position.y = 2;
camera.position.x = 2;
camera.lookAt(0, 0, 0)
const axesHelper = new THREE.AxesHelper(5);
scene.add(axesHelper);
const controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.05;
function animate() {
requestAnimationFrame(animate)
controls.update()
renderer.render(scene, camera)
}
animate()
window.addEventListener('resize', () => {
renderer.setSize(window.innerWidth, innerHeight)
camera.aspect = window.innerWidth / window.innerHeight
camera.updateProjectionMatrix()
})
let eventObj = {
Fullscreen: function () {
document.body.requestFullscreen()
},
ExitFullscreen: function () {
document.exitFullscreen()
}
}
const gui = new GUI()
gui.add(eventObj, 'Fullscreen').name('全屏')
gui.add(eventObj, 'ExitFullscreen').name('退出全屏')
// 实例化加载器gltf
const gltfLoader = new GLTFLoader()
// 加载压缩过的模型
// 实例化加载器 drace
const dracoLoader = new DRACOLoader()
// 设置 draco 路径
dracoLoader.setDecoderPath('./draco/')
// 设置gltf 加载器draco 解码器
gltfLoader.setDRACOLoader(dracoLoader)
// 加载gltf模型
gltfLoader.load(
'./model/city.glb',
// 模型加载完成后的回调
(gltf) => {
scene.add(gltf.scene)
gltf.scene.traverse((child) => {
if (child.isMesh) {
let building = child;
let geometry = building.geometry;
// 获取边缘 geometry
// let edgesGeometry = new THREE.EdgesGeometry(geometry);
// 获取线框 geometry
let edgesGeometry = new THREE.WireframeGeometry(geometry);
let edgesMaterial = new THREE.LineBasicMaterial({ color: 0xffffff})
// 创建线段
let edges = new THREE.LineSegments(edgesGeometry, edgesMaterial)
// 更新建筑物世界转换矩阵
building.updateMatrixWorld(true, true);
edges.matrix.copy(building.matrixWorld)
edges.matrix.decompose(edges.position, edges.quaternion, edges.scale)
// 添加到场景
scene.add(edges)
}
})
}
)
// 加载环境贴图
let rgbeLoader = new RGBELoader()
rgbeLoader.load(
'./texture/Alex_Hart-Nature_Lab_Bones_2k.hdr',
envMap => {
// 设置球面全景图
envMap.mapping = THREE.EquirectangularReflectionMapping
scene.environment = envMap // 环境贴图
}
)
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