Continuous Loops

dylantarre/animation-principles/skills/05-by-animation-type/continuous-loops

by dylantarre83597134ba8fNo license99 starsListed Oct 8, 2026Updated Oct 8, 2026Repository updated 9 months ago

Use when creating ongoing animations - loading spinners, pulsing indicators, ambient motion, background effects, or any animation that repeats indefinitely.

Instructions onlyDesign & Creative
AI-generated overview

Guides creation of seamless, indefinitely repeating UI animations such as spinners, pulses and ambient motion.

What it does
Applies Disney's twelve animation principles to continuous loops, covering squash and stretch, anticipation, staging, arcs, timing and appeal. It supplies duration, easing and iteration recommendations for spinners, pulses, skeleton shimmers, typing dots, breathing and floating effects. It also gives CSS keyframe patterns and performance rules such as animating only transform and opacity, pausing off-screen loops and respecting reduced-motion preferences.
When to use it
Use when building loading spinners, pulsing indicators, ambient background motion or any animation that repeats indefinitely. It suits front-end work where a loop must look organic and seamless rather than mechanical.
Requirements
No scripts or assets ship with the skill; it is instructions only. Applying it assumes a front-end environment that supports CSS animations, and the guidance references Intersection Observer and prefers-reduced-motion.

Continuous Loop Animations

Apply Disney's 12 principles to animations that never stop.

Principle Application

Squash & Stretch: Subtle scale oscillation (0.98-1.02) creates organic breathing. Avoid rigid mechanical loops.

Anticipation: Build anticipation into the loop cycle. Brief pause at extremes before reversing.

Staging: Loops should support, not dominate. Keep amplitude subtle for background elements.

Straight Ahead vs Pose-to-Pose: Design keyframe poses that loop seamlessly. End frame must flow into start frame.

Follow Through & Overlapping: Multi-part loops have elements at different phases. Three dots pulse with 120° phase offset.

Slow In/Slow Out: Use ease-in-out for smooth oscillations. Linear motion looks mechanical.

Arcs: Circular motion follows true arcs. Spinners rotate, pendulums swing, orbits circle.

Secondary Action: Primary rotation + secondary wobble. Spinner spins while slightly bouncing.

Timing:

  • Fast loops: 500-800ms (spinners, urgent indicators)
  • Medium loops: 1000-2000ms (pulsing, breathing)
  • Slow loops: 2000-4000ms (ambient, background)

Exaggeration: Minimal for loops - they're already attention-grabbing through repetition.

Solid Drawing: Loops must be seamless. Any jump between end and start destroys the illusion.

Appeal: Loops should be hypnotic, not annoying. Test at 30 seconds - still pleasant?

Timing Recommendations

Loop TypeDurationEasingIterations
Spinner600-800mslinear (rotation)infinite
Pulse1500-2000msease-in-outinfinite
Skeleton Shimmer1500msease-in-outinfinite
Typing Dots1400msease-in-outinfinite
Breathing3000-4000msease-in-outinfinite
Floating3000-5000msease-in-outinfinite

Implementation Patterns

css
/* Smooth spinner */.spinner {  animation: spin 700ms linear infinite;}
@keyframes spin {  to { transform: rotate(360deg); }}
/* Organic pulse */.pulse {  animation: pulse 2000ms ease-in-out infinite;}
@keyframes pulse {  0%, 100% { transform: scale(1); opacity: 1; }  50% { transform: scale(1.05); opacity: 0.8; }}
/* Staggered dots */.dot {  animation: bounce 1400ms ease-in-out infinite;}.dot:nth-child(2) { animation-delay: 160ms; }.dot:nth-child(3) { animation-delay: 320ms; }

Performance Rules

  1. Use transform and opacity only - no layout properties
  2. Add will-change: transform for loops over 1 second
  3. Pause off-screen loops with Intersection Observer
  4. Respect prefers-reduced-motion - reduce or stop loops

Seamless Loop Formula

For breathing/pulsing: 0%, 100% keyframes must be identical. Use alternate direction for simpler ping-pong effects.

Source and attribution

Source:dylantarre/animation-principlesinskills/05-by-animation-type/continuous-loopsat commit8359713

License: No license

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