Robert Penner

@robpenner

UX Engineer @Microsoft | creator of those easing functions | building next-gen Responsive Easing tools

Brooklyn, NY

Joined October 2008

Pinned
Robert Penner
@robpenner
Jun 26
I'm building a motion curve editor beyond your wildest fantasies. I've been head down solving new easing equations for the last 13 months. I promise nothing less than a quantum leap in easing technology.
Sunny Bounty
@Flamesdesigns
Jun 25
After testing Figma Motion, I'd say it's a great start. But if Figma wants Motion to be more than just a UI animation tool, a full Graph Editor should be at the top of the roadmap. Motion lives and dies by timing and easing.
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Robert Penner
@robpenner
Jul 26
The book is Extreme Programming Explained (2004). TDD, pair programming, continuous integration, refactoring: It's more applicable today than ever before. I've been following @KentBeck's methodology for 20 years. I just do it a lot faster now. amzn.to/45pXnP4
vik
@vikhyatk
Jul 25
we’re in uncharted territory. there is no book that teaches you how to build software in 2026. everyone is learning from first principles
Robert Penner
@robpenner
Jul 11
AI agents are like modes of transportation for your code. Which vehicles will optimize your trip? Should I take a helicopter to the grocery store? Should I cross the Grand Canyon on a bicycle? We need "AI path-finding": optimize routes to reduce fuel cost, hitting a cliff, etc
Robert Penner
@robpenner
Jul 9
FLIP animation is easy. Simply: - Swap your present with the future. - Move backward through time. - Go into the past until you reach the present. Congratulations, you've reached the future.
Robert Penner
@robpenner
Jul 8
I'm analyzing easing functions as signals, and I'm discovering a connection to the harmonic series. It appears easing is like pitch in music. Easing has frequency, octaves and overtones.