Conversation

Andy Matuschak

@andy_matuschak

·

Feb 14, 2015

Animation APIs parameterized by eg duration and curve are fundamentally opposed to continuous, fluid interactivity.

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Kevin Doughty

@KvnDy

·

Feb 15, 2015

@flyosity

@andy_matuschak

What’s wrong with additive keyframes? No velocity but still https://youtube.com/watch?v=M-8_9vjJbKs… source

github.com

GitHub - KevinDoughty/AdditiveSamples: Sample code showing explicit additive animation techniques.

Sample code showing explicit additive animation techniques. - GitHub - KevinDoughty/AdditiveSamples: Sample code showing explicit additive animation techniques.

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Andy Matuschak

@andy_matuschak

Replying to

@KvnDy

@KvnDy

@flyosity

You have a .5s toggle animation. Interrupt it halfway through using additive anims and it takes full .5s to go half as far.

9:37 PM · Feb 15, 2015·Twitter for iPhone

Kevin Doughty

@KvnDy

·

Feb 15, 2015

Replying to

@andy_matuschak

@andy_matuschak

@flyosity

Indeed, every animation has same duration. But distance travelled > half. Additive path is not linear.

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Andy Matuschak

@andy_matuschak

·

Feb 15, 2015

@KvnDy

@flyosity

Sure, I know. My point is that v(t) doesn't vary in a predictable or designed way with interruption timing.

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