gsap-greensock

name	gsap-greensock
description	Use when implementing Disney's 12 animation principles with GSAP (GreenSock Animation Platform)

GSAP Animation Principles

Implement all 12 Disney animation principles using GSAP's powerful timeline and tween system.

1. Squash and Stretch

gsap.to(".ball", {
  scaleX: 1.2,
  scaleY: 0.8,
  yoyo: true,
  repeat: 1,
  duration: 0.15,
  ease: "power2.inOut"
});

2. Anticipation

const tl = gsap.timeline();
tl.to(".character", { y: 20, scaleY: 0.9, duration: 0.2 }) // wind up
  .to(".character", { y: -200, duration: 0.4, ease: "power2.out" }); // action

3. Staging

gsap.to(".background", { filter: "blur(3px)", opacity: 0.6 });
gsap.to(".hero", { scale: 1.1, zIndex: 10 });

4. Straight Ahead / Pose to Pose

// Pose to pose with explicit keyframes
gsap.to(".sprite", {
  keyframes: [
    { x: 0, y: 0 },
    { x: 100, y: -50 },
    { x: 200, y: 0 },
    { x: 300, y: -30 }
  ],
  duration: 1
});

5. Follow Through and Overlapping Action

const tl = gsap.timeline();
tl.to(".body", { x: 200, duration: 0.5 })
  .to(".hair", { x: 200, duration: 0.5 }, "-=0.4")  // overlaps
  .to(".cape", { x: 200, duration: 0.6 }, "-=0.45"); // more drag

6. Slow In and Slow Out

gsap.to(".element", {
  x: 300,
  duration: 0.6,
  ease: "power2.inOut" // slow in and out
});
// Other eases: "power3.in", "power3.out", "elastic.out"

7. Arc

gsap.to(".ball", {
  motionPath: {
    path: [{ x: 0, y: 0 }, { x: 100, y: -100 }, { x: 200, y: 0 }],
    curviness: 1.5
  },
  duration: 1
});

8. Secondary Action

const tl = gsap.timeline();
tl.to(".button", { scale: 1.1, duration: 0.2 })
  .to(".icon", { rotation: 15, duration: 0.15 }, "<") // same time
  .to(".particles", { opacity: 1, stagger: 0.05 }, "<0.1");

9. Timing

// Fast snap
gsap.to(".fast", { x: 100, duration: 0.15 });
// Gentle float
gsap.to(".slow", { y: -20, duration: 2, ease: "sine.inOut", yoyo: true, repeat: -1 });

10. Exaggeration

gsap.to(".element", {
  scale: 1.5,        // exaggerated scale
  rotation: 720,     // multiple spins
  duration: 0.8,
  ease: "back.out(2)" // overshoot
});

11. Solid Drawing

gsap.to(".box", {
  rotationX: 45,
  rotationY: 30,
  transformPerspective: 1000,
  duration: 0.5
});

12. Appeal

gsap.to(".card", {
  scale: 1.02,
  boxShadow: "0 20px 40px rgba(0,0,0,0.2)",
  duration: 0.3,
  ease: "power1.out"
});

GSAP Timeline Pattern

const masterTL = gsap.timeline({ defaults: { ease: "power2.out" }});
masterTL
  .add(anticipation())
  .add(mainAction())
  .add(followThrough());

Key GSAP Features

• gsap.timeline() - Sequence animations
• ease - 30+ built-in easing functions
• stagger - Offset multiple elements
• motionPath - Arc and path animations
• yoyo / repeat - Loop control
• "<" / "-=0.2" - Position parameter for overlap