particle interaction
两个不依赖任何构建工具的前端实时渲染实验。作品 01 用摄像头捕捉手部 21 个关键点，映射为 7.5 万粒子场的引力中心与形态开关，后处理走 EffectComposer + UnrealBloom。作品 02 基于 Three.js r160，以 Instanced 绘制单次提交 15 万粒子，土星本体的纹理全部由 GLSL 的 hash/noise 函数程序化生成，无贴图资源。
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