Core Concepts
Canonical Definition
Animation that directly responds to, and can be influenced by, active user inputs such as touches, pointer movements, drags, and keypresses in real time.
Detailed Explanation & Context
Interactive animation stands in direct contrast to linear animation (such as video playback or traditional GIF/Lottie loops). While linear animations play continuously along a predetermined timeline regardless of user behavior, interactive animations evaluate user inputs continuously—updating trajectory, speed, and target coordinates on every single frame.
Mathematical Model / Governing Formula
Continuous Feedback Loop: User Input (t) → Physics Update (t) → Display (t)Key Takeaways
- Creates a tactile sense of direct physical manipulation.
- Provides immediate confirmation of user actions within the 12ms threshold.
- Increases perceived software responsiveness and emotional polish.
Implementation Syntax (JSX)
<div onPointerMove={(e) => updatePointerPhysics(e.clientX, e.clientY)} />Pillar Guides & Tools
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