Three.js 鬼屋教程

鬼屋 ·Ghost House· ▶ 在线运行案例案例合集三维可视化功能案例threehub.cn开源仓库github地址https://github.com/z2586300277/three-cesium-examples400个案例代码:网盘链接你将学到什么OrbitControls 相机轨道交互场景雾效增强纵深requestAnimationFrame渲染循环与resize自适应效果说明本案例演示鬼屋效果基于 WebGL 实现「鬼屋」可视化效果附完整可运行源码核心用到 OrbitControls、场景雾效增强纵深。建议先打开文首在线案例查看动态画面再对照下方源码逐步理解。核心概念Scene / Camera / WebGLRenderer构成最小渲染闭环大场景可开logarithmicDepthBuffer缓解 Z-fighting。OrbitControls提供轨道旋转/缩放开启enableDamping后需在 animate 中controls.update()。阅读下方完整源码时建议从init/load/animate三条主线入手再深入 shader 与工具函数。实现步骤搭建 Scene、PerspectiveCamera、WebGLRenderer挂载 canvas 并处理resize创建 OrbitControls及 Raycaster 等交互控件若源码包含在requestAnimationFrame循环中更新状态并 renderCesium 为viewer.render或自动渲染代码要点import * as THREE from three;import { OrbitControls } from three/examples/jsm/controls/OrbitControls.js; import { GUI } from three/addons/libs/lil-gui.module.min.jsconst getRandomIntInclusive function (min, max) { const minCeiled Math.ceil(min); const maxFloored Math.floor(max); return Math.floor(Math.random() * (maxFloored - minCeiled 1) minCeiled); // 包含最小值和最大值 }const setAoMapEnable function (mesh) { mesh.geometry.setAttribute(uv2, new THREE.Float32BufferAttribute( mesh.geometry.attributes.uv.array, 2 ) ) }const scene new THREE.Scene();const loaderManager new THREE.LoadingManager(); const textureLoader new THREE.TextureLoader(loaderManager); const door_colorTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/color.jpg, () { door_colorTexture.colorSpace THREE.SRGBColorSpace }); const door_lphaTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/alpha.jpg); const door_ambientOcclusionTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/ambientOcclusion.jpg); const door_heightTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/height.jpg); const door_metalnessTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/metalness.jpg); const door_normalTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/normal.jpg); const door_roughnessTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/door/roughness.jpg);const bricks_colorTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/bricks/color.jpg, () { bricks_colorTexture.colorSpace THREE.SRGBColorSpace }); const bricks_ambientOcclusionTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/bricks/ambientOcclusion.jpg); const bricks_normalTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/bricks/normal.jpg); const bricks_roughnessTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/bricks/roughness.jpg);const grass_colorTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/grass/color.jpg, () { grass_colorTexture.colorSpace THREE.SRGBColorSpace }); const grass_ambientOcclusionTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/grass/ambientOcclusion.jpg); const grass_normalTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/grass/normal.jpg); const grass_roughnessTexture textureLoader.load(FILE_HOST threeExamples/application/haunted_house/grass/roughness.jpg); loaderManager.onLoad function () { console.log(纹理加载完毕) } loaderManager.onError function (e) { console.log(纹理失败, e) } /**Fog*/ const fog new THREE.Fog(#50508b, 1, 15); scene.fog fog;/**Objects*/ const houseObj { houseWidth: 4, houseHeight: 2.5, houseDepth: 4, roofHeight: 0.8, doorSize: 2.2 }const house new THREE.Group(); scene.add(house);//房屋墙壁 const wall new THREE.Mesh( new THREE.BoxGeometry(houseObj.houseWidth, houseObj.houseHeight, houseObj.houseDepth), new THREE.MeshStandardMaterial({ map: bricks_colorTexture, aoMap: bricks_ambientOcclusionTexture, aoMapIntensity: 2, normalMap: bricks_normalTexture, roughnessMap: bricks_roughnessTexture, }) ) setAoMapEnable(wall); wall.position.y houseObj.houseHeight * 0.5 house.add(wall)const roof new THREE.Mesh( new THREE.ConeGeometry( Math.sqrt(houseObj.houseWidthhouseObj.houseWidth houseObj.houseDepthhouseObj.houseDepth) * 0.5, houseObj.roofHeight, 4), new THREE.MeshStandardMaterial( { color: #b35f45 } ) ) roof.rotation.y Math.PI / 4; roof.position.y houseObj.houseHeight 0.5 * houseObj.roofHeight roof.geometry.scale(1.5, 1.5, 1.5) console.log(roof, roof); house.add(roof);// 门 const door new THREE.Mesh( new THREE.PlaneGeometry(houseObj.doorSize, houseObj.doorSize, 100, 100), new THREE.MeshStandardMaterial({ map: door_colorTexture, transparent: true, alphaMap: door_lphaTexture, aoMap: door_ambientOcclusionTexture, aoMapIntensity: 5, displacementMap: door_heightTexture, displacementScale: 0.1, normalMap: door_normalTexture, metalnessMap: door_metalnessTexture, roughness: door_roughnessTexture }) ) door.geometry.setAttribute(uv2, new THREE.Float32BufferAttribute( door.geometry.attributes.uv.array, 2 ) ) door.position.y 1; door.position.z houseObj.houseDepth * 0.5 0.01; house.add(door);// 灌木丛 const bushes []; const bushGeometry new THREE.SphereGeometry(1, 16, 16) const bushMaterial new THREE.MeshStandardMaterial({ color: #89c854 }) bushes[0] new THREE.Mesh(bushGeometry, bushMaterial) bushes[0].position.set(houseObj.houseWidth * 0.5 0.05, 0.2, houseObj.houseDepth 0.05) bushes[0].scale.set(0.5, 0.5, 0.5);bushes[1] new THREE.Mesh(bushGeometry, bushMaterial) bushes[1].position.set(-(houseObj.houseWidth * 0.5 0.05), 0.2, -(houseObj.houseDepth 0.05)) bushes[1].scale.set(0.8, 0.8, 0.8);bushes[2] new THREE.Mesh(bushGeometry, bushMaterial) bushes[2].position.set(houseObj.houseWidth * 0.5 0.05, 0.2, -(houseObj.houseDepth 0.05)) bushes[2].scale.set(0.3, 0.3, 0.3);bushes[3] new THREE.Mesh(bushGeometry, bushMaterial) bushes[3].position.set(-(houseObj.houseWidth * 0.5 0.05), 0.2, houseObj.houseDepth 0.05) bushes[3].scale.set(0.6, 0.6, 0.6); house.add(...bushes);// 墓碑 const graves new THREE.Group() const gravesGeometry new THREE.BoxGeometry(0.4, 0.8, 0.2) const gravesMaterial new THREE.MeshStandardMaterial({ color: #ccc }) for (let i 0; i 50; i) { const grave new THREE.Mesh(gravesGeometry, gravesMaterial); const angle Math.random()getRandomIntInclusive(0, Math.PI2) const radius getRandomIntInclusive( (Math.max(houseObj.houseDepth, houseObj.houseWidth) * 0.5 3.2), 10 - 0.4 ) // const xMath.cos(angle)*radius; // const yMath.sin(angle)*radius;grave.position.x Math.cos(angle) * radius; grave.position.z Math.sin(angle) * radius; grave.position.y Math.random() * 0.5; grave.rotation.y Math.random() * Math.PI grave.rotation.z (Math.random() - 0.5) * 0.4 grave.castShadow true; graves.add(grave) } scene.add(graves)// 地面 grass_colorTexture.wrapS THREE.RepeatWrapping; grass_colorTexture.wrapT THREE.RepeatWrapping; grass_colorTexture.repeat.set(8, 8);grass_ambientOcclusionTexture.wrapS THREE.RepeatWrapping; grass_ambientOcclusionTexture.wrapT THREE.RepeatWrapping; grass_ambientOcclusionTexture.repeat.set(8, 8);grass_normalTexture.wrapS THREE.RepeatWrapping; grass_normalTexture.wrapT THREE.RepeatWrapping; grass_normalTexture.repeat.set(8, 8);grass_roughnessTexture.wrapS THREE.RepeatWrapping; grass_roughnessTexture.wrapT THREE.RepeatWrapping; grass_roughnessTexture.repeat.set(8, 8); const ground new THREE.Mesh( new THREE.PlaneGeometry(20, 20), new THREE.MeshStandardMaterial({ map: grass_colorTexture, aoMap: grass_ambientOcclusionTexture, aoMapIntensity: 2, normalMap: grass_normalTexture, roughnessMap: grass_roughnessTexture, }) ) setAoMapEnable(ground); ground.rotation.x -Math.PI / 2; ground.position.y 0; scene.add(ground);// 鬼魂 const ghost1 new THREE.PointLight(#ff00ff, 2, 3); scene.add(ghost1); const ghost2 new THREE.PointLight(#00ff00, 2, 3); scene.add(ghost2); const ghost3 new THREE.PointLight(#0000ff, 2, 3); scene.add(ghost3);/**light*/ // Ambient light const ambientLight new THREE.AmbientLight(#b9d5ff, 0.12) scene.add(ambientLight)// Directional light const moonLight new THREE.DirectionalLight(#ffffff, 0.12) moonLight.position.set(4, 5, - 2) scene.add(moonLight)const doorLight new THREE.PointLight(#ff7d46, 1, 7) doorLight.position.set(0, 2.2, 2.7); house.add(doorLight);const gui new GUI({ title: 控制面板, width: 320, closeFolders: true }); gui.add(ambientLight, intensity).name(环境光强度).min(0).max(1).step(0.001); gui.add(moonLight, intensity).name(平行光强度).min(0).max(1).step(0.001); gui.add(moonLight.position, x).name(平行光光源x).min(- 5).max(5).step(0.001); gui.add(moonLight.position, y).name(平行光光源y).min(- 5).max(5).step(0.001); gui.add(moonLight.position, z).name(平行光光源z).min(- 5).max(5).step(0.001); // gui.add(fog.color, z).name(fog).min(- 5).max(5).step(0.001); gui.addColor(fog, color).name(颜色)/**Camera*/ // Base camera const camera new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 100) camera.position.x 4 camera.position.y 2 camera.position.z 5 scene.add(camera);const renderer new THREE.WebGLRenderer(); renderer.setSize(window.innerWidth, window.innerHeight); renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2)); document.getElementById(box).appendChild(renderer.domElement); renderer.setClearColor(#50508b);/**Shadow*/ renderer.shadowMap.enabled true; renderer.shadowMap.type THREE.PCFSoftShadowMap;moonLight.castShadow true; doorLight.castShadow true; ghost1.castShadow true; ghost2.castShadow true; ghost3.castShadow true;wall.castShadow true; ground.castShadow false; ground.receiveShadow true;doorLight.shadow.mapSize.set(252, 252);doorLight.shadow.camera.far 7;moonLight.shadow.mapSize.set(252, 252);ghost1.shadow.mapSize.set(252, 252);ghost1.shadow.camera.far 7;ghost2.shadow.mapSize.set(252, 252);ghost2.shadow.camera.far 7;ghost3.shadow.mapSize.set(252, 252); ghost3.shadow.camera.far 7;renderer.render(scene, camera); const control new OrbitControls(camera, renderer.domElement);const clock new THREE.Clock(); const tick () { const elapsedTime clock.getElapsedTime() * 0.5; ghost1.position.x Math.cos(elapsedTime) * 4.8; ghost1.position.z Math.sin(elapsedTime) * 4.8; ghost1.position.y Math.sin(elapsedTime * 3);ghost2.position.x Math.cos(-0.8elapsedTime)(8 Math.sin(elapsedTime)); ghost2.position.z Math.sin(-0.8elapsedTime)(8 Math.sin(elapsedTime)); ghost2.position.y Math.sin(elapsedTime * 2);ghost3.position.x Math.cos(-elapsedTime) * 5; ghost3.position.z Math.sin(-elapsedTime) * 5; ghost3.position.y Math.sin(elapsedTime2.5) Math.cos(elapsedTime1.5); control.update(); renderer.render(scene, camera); requestAnimationFrame(tick) } tick();// 尺寸改变重新渲染 window.onresize function () { renderer.setSize(window.innerWidth, window.innerHeight); camera.aspect window.innerWidth / window.innerHeight; renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2)); camera.updateProjectionMatrix(); }完整源码GitHub小结本文提供鬼屋完整 Three.js 源码与在线 Demo建议先运行案例再改 uniform/参数做二次实验更多 Three.js 实战案例见 three-cesium-examples 合集 与 GitHub 开源仓库