Faster path drawing

In a heavy environment with 2500 sticky notes after

https://gyazo.com/59a44c1fd2631ae0dbbc78075f4ed2f0

before

https://gyazo.com/9d9a80f02b23641a74ef4d8fe6611241

Faster paths

Resolving [Rendering process blocks path draw

Paths are written on the overlay.

Put into pathBuffer

The number written is displayed.

When I tap on the display, it drops down and a heavy redraw runs for the first time.

concern

The pathBuffer should be flushed when switching tools, how should such code be written?

→ refactored and created code that is called whenever the tool is switched.

Undo will not trigger unless you drop down the path, which is counter-intuitive.

After dropping down the path, when I Undo, they are Undo'd one by one. Should they be done in batches?

---