docs: update architecture and operator documentation for clarity and accuracy

2026-09-16 10:44:19 +08:00
parent 7f878a2f3f
commit 6ca084ee4a
16 changed files with 67 additions and 65 deletions
--- a/docs/internals/operators/mask.md
+++ b/docs/internals/operators/mask.md
@@ -15,7 +15,7 @@ flowchart TD
 | 模式 | 源 Alpha A 与覆盖 M 的结果 |
 | --- | --- |
 | Set | `A × M` |
-| Add | `max(A, M)` |
+| Extend | `max(A, M)` |
 | Subtract | `A × (1 − M)` |

 Brush 拖动时维护简化屏幕路径、圆形印记与连接条的并集预览；释放时一次生成图片覆盖。Polyline 使用逐点路径，至少三个点后通过闭合圈、双击或 Enter 完成，Backspace 删除末点。