React Spring Animation Principles

Implement all 12 Disney animation principles using React Spring's spring physics system.

1. Squash and Stretch

const [springs, api] = useSpring(() => ({ scaleX: 1, scaleY: 1, config: { tension: 300, friction: 10 } }));

api.start({ scaleX: 1.2, scaleY: 0.8 }); <animated.div style={springs} />

2. Anticipation

const [props, api] = useSpring(() => ({ y: 0, scaleY: 1 }));

const jump = async () => { await api.start({ y: 10, scaleY: 0.9 }); // wind up api.start({ y: -200, config: { tension: 200 } }); // action };

3. Staging

const bgSpring = useSpring({ filter: 'blur(3px)', opacity: 0.6 }); const heroSpring = useSpring({ scale: 1.1, zIndex: 10 });

4. Straight Ahead / Pose to Pose

const [props] = useSpring(() => ({ from: { x: 0, y: 0 }, to: [ { x: 100, y: -50 }, { x: 200, y: 0 }, { x: 300, y: -30 } ] }));

5. Follow Through and Overlapping Action

const bodySpring = useSpring({ x: 200 }); const hairSpring = useSpring({ x: 200, delay: 50 }); const capeSpring = useSpring({ x: 200, delay: 100, config: { friction: 15 } });

6. Slow In and Slow Out

const spring = useSpring({ x: 300, config: { tension: 170, friction: 26 // balanced = smooth in/out } }); // High tension + low friction = fast // Low tension + high friction = slow

7. Arc

const [props] = useSpring(() => ({ to: async (next) => { await next({ x: 100, y: -100 }); await next({ x: 200, y: 0 }); }, config: { tension: 200, friction: 20 } }));

8. Secondary Action

const buttonSpring = useSpring({ scale: hover ? 1.05 : 1 }); const iconSpring = useSpring({ rotate: hover ? 15 : 0, delay: 50 });

9. Timing

const configs = { fast: { tension: 400, friction: 30 }, normal: { tension: 170, friction: 26 }, slow: { tension: 100, friction: 40 }, wobbly: { tension: 180, friction: 12 } }; // Or use presets: config.gentle, config.stiff, config.slow

10. Exaggeration

const spring = useSpring({ scale: 1.5, rotate: 720, config: { tension: 200, friction: 8 } // low friction = overshoot });

11. Solid Drawing

const spring = useSpring({ transform: 'perspective(1000px) rotateX(45deg) rotateY(30deg)' });

12. Appeal

const cardSpring = useSpring({ scale: hover ? 1.02 : 1, boxShadow: hover ? '0 20px 40px rgba(0,0,0,0.2)' : '0 5px 15px rgba(0,0,0,0.1)', config: config.gentle });

useTrail for Stagger

const trail = useTrail(items.length, { opacity: show ? 1 : 0, y: show ? 0 : 20, config: { tension: 200, friction: 20 } });

trail.map((props, i) => <animated.div style={props}>{items[i]}</animated.div>)

Key React Spring Features

• useSpring

• Single animation

• useSprings

• Multiple springs

• useTrail

• Staggered animations

• useChain

• Sequence animations

• useTransition

• Mount/unmount animations

• config presets - gentle , stiff , slow , molasses

• Physics-based: tension , friction , mass , velocity