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Efficient undo history #51

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1j01 opened this issue Jan 19, 2018 · 0 comments
Open

Efficient undo history #51

1j01 opened this issue Jan 19, 2018 · 0 comments
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enhancement performance

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@1j01
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1j01 commented Jan 19, 2018 •
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JS Paint allows way more undos than old versions of MS Paint (3 in Win95/98, and 50 in Win7),
but it's way less efficient about it. It currently just naively stores the entire image for every undo state.

It should use rectangle-bounded operations.
This is partially implemented in Mopaint.
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