Cesium-Examples/examples/threeEx/1.1.26、射线获取层级模型.html
2025-03-19 11:00:22 +08:00

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HTML

<!--********************************************************************
* by jiawanlong
*********************************************************************-->
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<style>
* {
margin: 0;
padding: 0;
overflow: hidden;
}
body,
#box {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div id="box"></div>
<script type="importmap">
{
"imports": {
"three": "./../../libs/three/build/three.module.js",
"three/addons/": "./../../libs/three/examples/jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three'
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'
import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js'
const box = document.getElementById('box')
const scene = new THREE.Scene()
// 相机
const camera = new THREE.PerspectiveCamera(75, box.clientWidth / box.clientHeight, 0.1, 1000)
camera.position.set(5, 5, 5)
// 渲染器
const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true, logarithmicDepthBuffer: true })
// 环境光
scene.add(new THREE.AmbientLight(0xffffff, 4))
// 参考线
scene.add(new THREE.AxesHelper(1000))
renderer.setSize(box.clientWidth, box.clientHeight)
box.appendChild(renderer.domElement)
new OrbitControls(camera, renderer.domElement)
// 加载模型 gltf/ glb
const loader = new GLTFLoader()
loader.load('./zhanji.glb', (gltf) => {
scene.add(gltf.scene)
gltf.scene.scale.set(0.005, 0.005, 0.005)
// 递归遍历所有模型节点
gltf.scene.traverse(function (obj) {
if (obj.isMesh) {
console.log('模型节点', obj);
console.log('模型节点名字', obj.name);
console.log('模型材质', obj.material);
}
});
window.addEventListener('mousedown', onDocumentClick, false);
function onDocumentClick(event) {
event.preventDefault();
const mouse = new THREE.Vector2();
mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
const raycaster = new THREE.Raycaster();
raycaster.setFromCamera(mouse, camera);
const intersects = raycaster.intersectObjects([gltf.scene]);
if (intersects.length > 0) {
console.log(intersects)
intersects[0].object.material.color.set(0xff00ff);
}
}
})
animate()
function animate() {
requestAnimationFrame(animate)
renderer.render(scene, camera)
}
</script>
</body>
</html>