gesture Christmas tree 3d with photo
A free computer vision demo — play it in your browser, no install. A 3D particle Christmas tree controlled by hand gestures. Built with Three.js & MediaPipe. 🎄✨ (一个由手势控制的 3D 粒子圣诞树。基于 Three.js 和 MediaPipe 构建。)
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Controls: 确保浏览器允许使用摄像头，然后： · 握紧拳头: 收！粒子聚合成圣诞树 · 张开手掌: 炸裂模式，树散开成星云，左右移动手掌可以转动视角
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Open the live demo Source on GitHubFrom the README
原本只是想画一棵普通的 3D 圣诞树，但觉得不够酷，于是加上了 手势识别 和 粒子特效。现在你可以通过摄像头「隔空」控制这棵树，还能把自己喜欢的照片挂上去。
这不是那种静态的网页贺卡，而是一棵由 几千个粒子 组成的动态树。接入了 Google 的 MediaPipe，所以它能看懂你的手势。
识别用的是相对比例（以手腕到中指指根的长度为基准），所以手离摄像头远一点近一点都能稳定触发。阈值可以在 js/config.js 的 gestures 里调，按 D 能实时看到原始数值。
1. 页面上传（最简单） 点右上角 Select Files 选图片，或者 Select Folder 一次性选一整个文件夹。
2. 放进 images/ 自动加载 把照片丢进 images/，再建一个 images/manifest.json 列出文件名：
纯前端，没有框架，没有打包工具，依赖通过 importmap 从 CDN 引入：
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