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Devil Lu Linvega's posts Post Back to profile
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R. L. Dane :debian: :openbsd:

@neauoire
I love how your UI design is coming along. It's starting to look really user-friendly. Kind of like an alternate reality where the first Mac had less RAM and two more colors. 😄
(And a much lighter OS)

20 Jul 2022 at 22:50 | Wall-to-wall | Open on fosstodon.org
3 comments
Devil Lu Linvega

@RL_Dane I'm slowly walking through the eras of the past as I learn how to draw things more efficiently!

20 Jul 2022 at 23:52 | Open on merveilles.town
R. L. Dane :debian: :openbsd:

@neauoire
I wonder if anyone ever did a write-up of Bill Atkinson's LisaGraf/QuickDraw algorithms. Probably not... Proprietary, yay 😔

They were *incredibly* innovative.
He was the first to figure out how to redraw only the visible portion of a window, and his circle/oval/curve* algorithm was crazy efficient. I think he only needed to compute one eighth of the actual oval, and repeated the rest. Probably even more efficient for circles.

*QuickDraw curves were oval arcs, only.

@neauoire
I wonder if anyone ever did a write-up of Bill Atkinson's LisaGraf/QuickDraw algorithms. Probably not... Proprietary, yay 😔

They were *incredibly* innovative.
He was the first to figure out how to redraw only the visible portion of a window, and his circle/oval/curve* algorithm was crazy efficient. I think he only needed to compute one eighth of the actual oval, and repeated the rest. Probably even more efficient for circles.

21 Jul 2022 at 12:08 | Open on fosstodon.org
Devil Lu Linvega

@RL_Dane I've implemented the oval bresenham-type algorithm in uxntal a little while ago :) It's pretty clever.

21 Jul 2022 at 15:18 | Open on merveilles.town
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