// 导入threejs import * as THREE from "three"; // 导入轨道控制器 import { OrbitControls
} from "three/examples/jsm/controls/OrbitControls.js"; // 导入lil.gui import { GUI
} from "three/examples/jsm/libs/lil-gui.module.min.js"; // 导入hdr加载器 import {
RGBELoader} from "three/examples/jsm/loaders/RGBELoader.js"; // 导入gltf加载器 import
{ GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js"; // 导入draco解码器
import { DRACOLoader } from "three/examples/jsm/loaders/DRACOLoader.js"; //
导入变换控制器 import { TransformControls } from
"three/addons/controls/TransformControls.js"; // 创建场景 const scene = new THREE.
Scene(); // 创建相机 const camera = new THREE.PerspectiveCamera( 45, // 视角 window.
innerWidth/ window.innerHeight, // 宽高比 0.1, // 近平面 1000 // 远平面 ); // 创建渲染器 const
renderer= new THREE.WebGLRenderer({ antialias: true, // 开启抗锯齿 }); renderer.
shadowMap.enabled = true; renderer.toneMapping = THREE.ReinhardToneMapping;
renderer.toneMappingExposure = 1; renderer.setSize(window.innerWidth, window.
innerHeight); document.body.appendChild(renderer.domElement); // 设置相机位置 camera.
position.z = 8; camera.position.y = 2.5; camera.position.x = 3; camera.lookAt(0,
1.2, 0); // 添加世界坐标辅助器 const axesHelper = new THREE.AxesHelper(5); scene.add(
axesHelper); // 添加网格辅助器 const gridHelper = new THREE.GridHelper(50, 50);
gridHelper.material.opacity = 0.3; gridHelper.material.transparent = true; scene
.add(gridHelper); // 添加轨道控制器 const controls = new OrbitControls(camera, renderer
.domElement); // 设置带阻尼的惯性 controls.enableDamping = true; // 渲染函数 function
animate() { controls.update(); requestAnimationFrame(animate); // 渲染 renderer.
render(scene, camera); } animate(); // 监听窗口变化 window.addEventListener("resize",
() => { // 重置渲染器宽高比 renderer.setSize(window.innerWidth, window.innerHeight); //
重置相机宽高比 camera.aspect = window.innerWidth / window.innerHeight; // 更新相机投影矩阵
camera.updateProjectionMatrix(); }); // rgbeLoader 加载hdr贴图 let rgbeLoader = new
RGBELoader(); rgbeLoader.load("./texture/Alex_Hart-Nature_Lab_Bones_2k.hdr", (
envMap) => { // 设置球形贴图 // envMap.mapping =
THREE.EquirectangularReflectionMapping; envMap.mapping = THREE.
EquirectangularRefractionMapping; // 设置环境贴图 // scene.background = envMap; scene.
background= new THREE.Color(0xcccccc); // 设置环境贴图 scene.environment = envMap; });
// rgbeLoader 加载hdr贴图 // 实例化加载器gltf const gltfLoader = new GLTFLoader(); //
实例化加载器draco 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); // 加载模型 gltfLoader.load( // 模型路径
"./model/house/house-scene-min.glb", // 加载完成回调 (gltf) => { basicScene = gltf.
scene; } ); // 创建变换控制器 let tControls = new TransformControls(camera, renderer.
domElement); tControls.addEventListener("change", animate); //
监听拖动事件,当拖动物体时候,禁用轨道控制器 tControls.addEventListener("dragging-changed", function (
event) { controls.enabled = !event.value; }); tControls.addEventListener(
"change", () => { if (eventObj.isClampGroup) { tControls.object.position.y = 0;
} }); scene.add(tControls); let basicScene; let eventObj = { Fullscreen:
function () { // 全屏 document.body.requestFullscreen(); console.log("全屏"); },
ExitFullscreen: function () { document.exitFullscreen(); console.log("退出全屏"); },
addScene: function () { scene.add(basicScene); }, setTranslate: function () {
tControls.setMode("translate"); }, setRotate: function () { tControls.setMode(
"rotate"); }, setScale: function () { tControls.setMode("scale"); }, toggleSpace
: function () { tControls.setSpace(tControls.space === "local" ? "world" :
"local"); }, cancelMesh: function () { tControls.detach(); }, translateSnapNum:
null, rotateSnapNum: 0, scaleSnapNum: 0, isClampGroup: false, isLight: true, };
// 创建GUI const gui = new GUI(); // 添加按钮 // gui.add(eventObj,
"Fullscreen").name("全屏"); // gui.add(eventObj, "ExitFullscreen").name("退出全屏");
// 控制立方体的位置 // gui.add(cube.position, "x", -5, 5).name("立方体x轴位置"); gui.add(
eventObj, "addScene").name("添加户型基础模型"); gui.add(eventObj, "setTranslate").name(
"位移模式"); gui.add(eventObj, "setRotate").name("旋转模式"); gui.add(eventObj,
"setScale").name("缩放模式"); gui.add(eventObj, "toggleSpace").name("切换空间模式"); gui.
add(eventObj, "cancelMesh").name("取消选择"); gui .add(eventObj, "isLight") .name(
"是否开启灯光") .onChange((value) => { if (value) { renderer.toneMappingExposure = 1;
} else { renderer.toneMappingExposure = 0.1; } }); // 监听鼠标按键事件 window.
addEventListener("keydown", (event) => { // 判断是否按的是t键 if (event.key === "t") {
eventObj.setTranslate(); } if (event.key === "r") { eventObj.setRotate(); } if (
event.key === "s") { eventObj.setScale(); } }); // 添加物体目录 let meshList = [ {
name: "盆栽", path: "./model/house/plants-min.glb", }, { name: "单人沙发", path:
"./model/house/sofa_chair_min.glb", }, ]; let folderAddMehs = gui.addFolder(
"添加物体"); let sceneMeshes = []; let meshesNum = {}; meshList.forEach((item) => {
item.addMesh = function () { gltfLoader.load(item.path, (gltf) => { sceneMeshes.
push({ ...item, object3d: gltf.scene, }); let object3d = gltf.scene; scene.add(
object3d); tControlSelect(object3d); let meshOpt = { toggleMesh: function () {
tControlSelect(object3d); }, }; meshesNum[item.name] = meshesNum[item.name] ?
meshesNum[item.name] + 1 : 1; meshesFolder .add(meshOpt, "toggleMesh") .name(
item.name + meshesNum[item.name]); }); }; folderAddMehs.add(item, "addMesh").
name(item.name); }); function tControlSelect(mesh) { tControls.attach(mesh); }
let meshesFolder = gui.addFolder("家居列表"); let snapFolder = gui.addFolder("固定设置")
; snapFolder .add(eventObj, "translateSnapNum", { 不固定: null, 1: 1, 0.1: 0.1, 10:
10, }) .name("固定位移设置") .onChange(() => { tControls.setTranslationSnap(eventObj.
translateSnapNum); }); snapFolder .add(eventObj, "rotateSnapNum", 0, 1) .step(
0.01) .name("旋转") .onChange(() => { tControls.setRotationSnap(eventObj.
rotateSnapNum* Math.PI * 2); }); snapFolder .add(eventObj, "scaleSnapNum", 0, 2)
.step(0.1) .name("缩放") .onChange(() => { tControls.setScaleSnap(eventObj.
scaleSnapNum); }); snapFolder.add(eventObj, "isClampGroup").name("是否吸附到地面");

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