Benoît Wimart

or MIDI :)

Thank you. I understand at 99%, but make multiple changes, save diff in an array and play with this array when I do multiple undo and redo is not easy....

I try this : https://codepen.io/benoitwimart/pen/Vozgrq?editors=1012

Oh yes, I remember on an other test the wrong switch between old and new :)

I will try in few days, thank you !

Something go wrong :( I make 3 clicks, 3 undos, 3 clicks, 3 undos (the 2 undos is wrong) https://codepen.io/benoitwimart/pen/Vozgrq?editors=1010 :(

it's look ok 👍 https://codepen.io/benoitwimart/pen/KKPXzVy?editors=1010

Finaly, it's not 100% ok from `{a:[[1,1,1,1],0,0]}` to `{a:[[1,1,1,1],[1,1,1,1],0]}` undo return an objet :( I have `{a:[{0:1,1:1,2:1,3:1},0,0]}` Here

Thank you !

I did this, but pen up and down does not work.