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fix: v2.1 3D 渲染问题根治(profileGeo 自交破面+扇矩形 NaN)

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- profileGeo 外轮廓路径自相交(闭合斜边穿过槽口)导致三角剖分破面
  重写为正确顶点顺序的 U 槽简单多边形
- 型材截面挤出抽为共享模块 three/profileGeo.ts(+geometryIsValid 校验器)
- inferSashGlyphs 兜底 bboxOf 误传段对象→修正为有限值点集
  (修复扇矩形 NaN 序列化为 null 的问题)
- 新增 scripts/validate3d.cjs: 254 样板×3700 网格×798 扇
  逐网格 NaN 检测全部通过; 窄条扇合法跳过
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HHY
2026-09-21 03:43:26 -07:00
parent 56c154bf81
commit e1572f969d
6 changed files with 136 additions and 37 deletions
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frontend/.gitignore
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# 验证编译产物
.val/