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DOM，但以下三样东西",[1535,1603,1604],{},"还留在内存里","：",[1607,1608,1609,1618,1624],"ul",{},[1564,1610,1611,1605,1614,1617],{},[1535,1612,1613],{},"渲染循环",[1568,1615,1616],{},"requestAnimationFrame"," 还在一帧帧空跑。",[1564,1619,1620,1623],{},[1535,1621,1622],{},"WebGL 资源","：几何体顶点、材质、贴图存在 GPU 内存里，Vue 不知道它们的存在。",[1564,1625,1626,1629],{},[1535,1627,1628],{},"事件监听","：OrbitControls 在 canvas 上绑定的鼠标事件。",[1531,1631,1632,1633,1636],{},"页面里反复进出几次 3D 页面，内存就一路上涨。清理套路是固定的，在 ",[1568,1634,1635],{},"onBeforeUnmount"," 里逐个释放：",[1638,1639,1644],"pre",{"className":1640,"code":1641,"language":1642,"meta":1643,"style":1643},"language-js shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","onBeforeUnmount(() => {\n    cancelAnimationFrame(frameId); // 1. 停掉渲染循环\n    controls.dispose(); // 2. 移除控制器的事件监听\n    geometry.dispose(); // 3. 释放几何体\n    material.dispose(); // 4. 释放材质\n    renderer.dispose(); // 5. 释放渲染器（WebGL 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controls",[1647,1698,1699],{"class":1660},".",[1647,1701,1702],{"class":1653},"dispose",[1647,1704,1661],{"class":1677},[1647,1706,1686],{"class":1660},[1647,1708,1709],{"class":1689}," // 2. 移除控制器的事件监听\n",[1647,1711,1713,1716,1718,1720,1722,1724],{"class":1649,"line":1712},4,[1647,1714,1715],{"class":1656},"    geometry",[1647,1717,1699],{"class":1660},[1647,1719,1702],{"class":1653},[1647,1721,1661],{"class":1677},[1647,1723,1686],{"class":1660},[1647,1725,1726],{"class":1689}," // 3. 释放几何体\n",[1647,1728,1730,1733,1735,1737,1739,1741],{"class":1649,"line":1729},5,[1647,1731,1732],{"class":1656},"    material",[1647,1734,1699],{"class":1660},[1647,1736,1702],{"class":1653},[1647,1738,1661],{"class":1677},[1647,1740,1686],{"class":1660},[1647,1742,1743],{"class":1689}," // 4. 释放材质\n",[1647,1745,1747,1750,1752,1754,1756,1758],{"class":1649,"line":1746},6,[1647,1748,1749],{"class":1656},"    renderer",[1647,1751,1699],{"class":1660},[1647,1753,1702],{"class":1653},[1647,1755,1661],{"class":1677},[1647,1757,1686],{"class":1660},[1647,1759,1760],{"class":1689}," // 5. 释放渲染器（WebGL 上下文）\n",[1647,1762,1764,1767,1769],{"class":1649,"line":1763},7,[1647,1765,1766],{"class":1660},"}",[1647,1768,1683],{"class":1656},[1647,1770,1771],{"class":1660},";\n",[1531,1773,1774,1775,1777],{},"注意要把这些变量声明在 ",[1568,1776,1591],{}," 外面，清理函数才访问得到。这是和前面示例代码唯一的结构差异。",[1540,1779],{},[1526,1781,1783],{"id":1782},"封装-spincube-组件","🛠 封装 SpinCube 组件",[1531,1785,1786],{},"按分工原则和清理规范，封装一个带交互的旋转立方体组件：",[1638,1788,1793],{"className":1789,"code":1790,"filename":1791,"language":1792,"meta":1643,"style":1643},"language-vue shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\u003Ctemplate>\n    \u003Cdiv ref=\"containerRef\" class=\"container\">\u003C/div>\n\u003C/template>\n\n\u003Cscript setup>\nimport { onBeforeUnmount, onMounted, ref } from 'vue';\nimport * as THREE from 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prop：",[1638,2993,2996],{"className":1789,"code":2994,"filename":2995,"language":1792,"meta":1643,"style":1643},"\u003Ctemplate>\n    \u003CSpinCube :color=\"0x6699ff\" />\n\u003C/template>\n\n\u003Cscript setup>\nimport SpinCube from '@/components/SpinCube.vue';\n\u003C/script>\n","views/Product.vue",[1568,2997,2998,3006,3028,3036,3040,3050,3068],{"__ignoreMap":1643},[1647,2999,3000,3002,3004],{"class":1649,"line":1650},[1647,3001,1799],{"class":1660},[1647,3003,1802],{"class":1677},[1647,3005,1805],{"class":1660},[1647,3007,3008,3010,3013,3016,3018,3020,3023,3025],{"class":1649,"line":1671},[1647,3009,1810],{"class":1660},[1647,3011,3012],{"class":1677},"SpinCube",[1647,3014,3015],{"class":1664}," :color",[1647,3017,1819],{"class":1660},[1647,3019,1822],{"class":1660},[1647,3021,3022],{"class":1825},"0x6699ff",[1647,3024,1822],{"class":1660},[1647,3026,3027],{"class":1660}," />\n",[1647,3029,3030,3032,3034],{"class":1649,"line":1693},[1647,3031,1852],{"class":1660},[1647,3033,1802],{"class":1677},[1647,3035,1805],{"class":1660},[1647,3037,3038],{"class":1649,"line":1712},[1647,3039,1862],{"emptyLinePlaceholder":1861},[1647,3041,3042,3044,3046,3048],{"class":1649,"line":1729},[1647,3043,1799],{"class":1660},[1647,3045,1869],{"class":1677},[1647,3047,1872],{"class":1664},[1647,3049,1805],{"class":1660},[1647,3051,3052,3054,3057,3059,3061,3064,3066],{"class":1649,"line":1746},[1647,3053,1880],{"class":1879},[1647,3055,3056],{"class":1656}," SpinCube ",[1647,3058,1928],{"class":1879},[1647,3060,1905],{"class":1660},[1647,3062,3063],{"class":1825},"@/components/SpinCube.vue",[1647,3065,1910],{"class":1660},[1647,3067,1771],{"class":1660},[1647,3069,3070,3072,3074],{"class":1649,"line":1763},[1647,3071,1852],{"class":1660},[1647,3073,1869],{"class":1677},[1647,3075,1805],{"class":1660},[1540,3077],{},[1526,3079,3081],{"id":3080},"vue-中使用-threejs-的常见坑","💡 Vue 中使用 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",[1568,3169,3164],{},[3089,3171,3172,3175,3178],{},[3107,3173,3174],{},"高分屏画面模糊",[3107,3176,3177],{},"没设置像素比",[3107,3179,3180],{},[1568,3181,3182],{},"renderer.setPixelRatio(window.devicePixelRatio)",[1540,3184],{},[1526,3186,3188],{"id":3187},"小节总结","🧾 小节总结",[1607,3190,3191,3194,3197,3216,3222],{},[1564,3192,3193],{},"分工原则：Vue 渲染空容器，canvas 由渲染器创建并挂进容器。",[1564,3195,3196],{},"组件卸载不会自动释放 WebGL 资源，必须手动清理。",[1564,3198,3199,3200,3203,3204,3203,3207,3203,3210,3203,3213,1575],{},"清理五件套：",[1568,3201,3202],{},"cancelAnimationFrame","、",[1568,3205,3206],{},"controls.dispose()",[1568,3208,3209],{},"geometry.dispose()",[1568,3211,3212],{},"material.dispose()",[1568,3214,3215],{},"renderer.dispose()",[1564,3217,3218,3219,3221],{},"要释放的对象声明在 ",[1568,3220,1591],{}," 外层，清理函数才能访问。",[1564,3223,3224,3226,3227,3229],{},[1568,3225,2617],{}," 解决高分屏模糊；",[1568,3228,3164],{}," 是阻尼生效的前提。",[1540,3231],{},[1526,3233,3235],{"id":3234},"知识问答","❓ 知识问答",[1531,3237,3238],{},[1535,3239,3240],{},"Q1：每个几何体、材质都要单独 dispose 吗？",[1531,3242,3243,3244,3246,3247,3250],{},"是的。场景里每 ",[1568,3245,2441],{}," 一个几何体或材质，卸载时就对应一个 ",[1568,3248,3249],{},"dispose()","。封装组件时把它们收集起来统一释放，就不会漏。",[1531,3252,3253],{},[1535,3254,3255],{},"Q2：路由跳走组件就销毁了，为什么还要取消动画帧？",[1531,3257,3258,3260],{},[1568,3259,1616],{}," 的回调挂在浏览器上，不归 Vue 管。不取消的话，组件没了它还在一帧帧执行，访问已经销毁的渲染器还可能报错。",[1531,3262,3263],{},[1535,3264,3265],{},"Q3：项目里有多个不同的 3D 场景，每个都封装一个组件吗？",[1531,3267,3268],{},"通用部分（初始化、循环、清理）是重复的，可以抽成一个组合式函数或基座组件，各场景只写自己的场景内容。思路和 D3 课程的组件封装一脉相承。",[1531,3270,3271],{},[1535,3272,3273],{},"Q4：SSR（如 Nuxt）项目里要注意什么？",[1531,3275,3276,3277,3279],{},"Three.js 依赖浏览器环境，初始化代码必须在 ",[1568,3278,1591],{},"（只在客户端执行）里运行。本课程的写法天然满足这一点，直接可用。",[1540,3281],{},[1526,3283,3285],{"id":3284},"小练习","🧪 小练习",[1531,3287,3288,3289,3292],{},"封装一个 ",[1568,3290,3291],{},"FloatSphere.vue"," 组件：",[1561,3294,3295,3304,3307],{},[1564,3296,3297,3298,3203,3300,3303],{},"接收 ",[1568,3299,2363],{},[1568,3301,3302],{},"speed"," 两个 prop，控制球体颜色和浮动速度。",[1564,3305,3306],{},"球体边自转边上下浮动，支持 OrbitControls 交互。",[1564,3308,3309],{},"卸载时完整清理五件套，然后在页面上放两个不同颜色的组件，验证互不影响。",[1638,3311,3314],{"className":1789,"code":3312,"filename":3313,"language":1792,"meta":1643,"style":1643},"\u003Ctemplate>\n    \u003Cdiv ref=\"containerRef\" class=\"container\">\u003C/div>\n\u003C/template>\n\n\u003Cscript setup>\nimport { onBeforeUnmount, onMounted, ref } from 'vue';\nimport * as THREE from 'three';\nimport { OrbitControls } from 'three/addons/controls/OrbitControls.js';\n\n// 请在这里编写代码\n\u003C/script>\n\n\u003Cstyle scoped>\n.container {\n    width: 320px;\n    height: 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恭喜你已经完整掌握 Three.js 的核心技能啦！从三大件、几何体材质、灯光阴影，到相机动画和鼠标交互，再到 Vue3 工程化封装，你已经具备在真实项目中落地 3D 场景的能力。Three.js 的世界很大，模型加载、粒子特效、着色器都在向你招手，快去探索吧！",[2931,3523,3524],{},"html pre.shiki code .swgpB, html code.shiki .swgpB{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sndM8, html code.shiki .sndM8{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .s86vT, html code.shiki .s86vT{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .s50WR, html code.shiki .s50WR{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sd2Uz, html code.shiki .sd2Uz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .syuKq, html code.shiki .syuKq{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html .light .shiki span {color: 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并运行你的第一个脚本。",1784715110137]