framer-motion-animator

What this skill does

# Framer Motion Animator

Build delightful animations and interactions with Framer Motion's declarative API.

## Core Workflow

1. **Identify animation needs**: Entrance, exit, hover, gestures
2. **Choose animation type**: Simple, variants, gestures, layout
3. **Define motion values**: Opacity, scale, position, rotation
4. **Add transitions**: Duration, easing, spring physics
5. **Orchestrate sequences**: Stagger, delay, parent-child
6. **Optimize performance**: GPU-accelerated properties

## Installation

```bash
npm install framer-motion
```

## Basic Animations

### Simple Animation

```tsx
import { motion } from 'framer-motion';

// Animate on mount
export function FadeIn({ children }: { children: React.ReactNode }) {
  return (
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      transition={{ duration: 0.5 }}
    >
      {children}
    </motion.div>
  );
}

// Animate on hover
export function ScaleOnHover({ children }: { children: React.ReactNode }) {
  return (
    <motion.div
      whileHover={{ scale: 1.05 }}
      whileTap={{ scale: 0.95 }}
      transition={{ type: 'spring', stiffness: 400, damping: 17 }}
    >
      {children}
    </motion.div>
  );
}
```

### Exit Animations with AnimatePresence

```tsx
import { motion, AnimatePresence } from 'framer-motion';

export function Modal({ isOpen, onClose, children }: ModalProps) {
  return (
    <AnimatePresence>
      {isOpen && (
        <>
          {/* Backdrop */}
          <motion.div
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            onClick={onClose}
            className="fixed inset-0 bg-black/50 z-40"
          />

          {/* Modal */}
          <motion.div
            initial={{ opacity: 0, scale: 0.95, y: 20 }}
            animate={{ opacity: 1, scale: 1, y: 0 }}
            exit={{ opacity: 0, scale: 0.95, y: 20 }}
            transition={{ type: 'spring', damping: 25, stiffness: 300 }}
            className="fixed inset-0 z-50 flex items-center justify-center"
          >
            <div className="bg-white rounded-xl p-6 max-w-md w-full">
              {children}
            </div>
          </motion.div>
        </>
      )}
    </AnimatePresence>
  );
}
```

## Variants Pattern

### Staggered Children

```tsx
const containerVariants = {
  hidden: { opacity: 0 },
  visible: {
    opacity: 1,
    transition: {
      staggerChildren: 0.1,
      delayChildren: 0.2,
    },
  },
};

const itemVariants = {
  hidden: { opacity: 0, y: 20 },
  visible: {
    opacity: 1,
    y: 0,
    transition: { type: 'spring', stiffness: 300, damping: 24 },
  },
};

export function StaggeredList({ items }: { items: string[] }) {
  return (
    <motion.ul
      variants={containerVariants}
      initial="hidden"
      animate="visible"
    >
      {items.map((item, index) => (
        <motion.li key={index} variants={itemVariants}>
          {item}
        </motion.li>
      ))}
    </motion.ul>
  );
}
```

### Interactive Variants

```tsx
const buttonVariants = {
  initial: { scale: 1 },
  hover: { scale: 1.05 },
  tap: { scale: 0.95 },
  disabled: { opacity: 0.5, scale: 1 },
};

export function AnimatedButton({
  children,
  disabled,
  onClick,
}: ButtonProps) {
  return (
    <motion.button
      variants={buttonVariants}
      initial="initial"
      whileHover={disabled ? 'disabled' : 'hover'}
      whileTap={disabled ? 'disabled' : 'tap'}
      animate={disabled ? 'disabled' : 'initial'}
      onClick={onClick}
      disabled={disabled}
      className="px-4 py-2 bg-blue-500 text-white rounded-lg"
    >
      {children}
    </motion.button>
  );
}
```

## Page Transitions

### Next.js App Router

```tsx
// app/template.tsx
'use client';

import { motion } from 'framer-motion';

export default function Template({ children }: { children: React.ReactNode }) {
  return (
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      exit={{ opacity: 0, y: 20 }}
      transition={{ duration: 0.3 }}
    >
      {children}
    </motion.div>
  );
}
```

### Shared Layout Animations

```tsx
import { motion, LayoutGroup } from 'framer-motion';

export function Tabs({ tabs, activeTab, onTabChange }: TabsProps) {
  return (
    <LayoutGroup>
      <div className="flex gap-2">
        {tabs.map((tab) => (
          <button
            key={tab.id}
            onClick={() => onTabChange(tab.id)}
            className="relative px-4 py-2"
          >
            {activeTab === tab.id && (
              <motion.div
                layoutId="activeTab"
                className="absolute inset-0 bg-blue-500 rounded-lg"
                transition={{ type: 'spring', stiffness: 500, damping: 30 }}
              />
            )}
            <span className="relative z-10">{tab.label}</span>
          </button>
        ))}
      </div>
    </LayoutGroup>
  );
}
```

## Gesture Animations

### Drag

```tsx
export function DraggableCard() {
  return (
    <motion.div
      drag
      dragConstraints={{ left: -100, right: 100, top: -100, bottom: 100 }}
      dragElastic={0.2}
      dragTransition={{ bounceStiffness: 600, bounceDamping: 20 }}
      whileDrag={{ scale: 1.1, cursor: 'grabbing' }}
      className="w-32 h-32 bg-blue-500 rounded-lg cursor-grab"
    />
  );
}
```

### Swipe to Dismiss

```tsx
export function SwipeToDelete({ onDelete, children }: SwipeProps) {
  return (
    <motion.div
      drag="x"
      dragConstraints={{ left: 0, right: 0 }}
      onDragEnd={(_, info) => {
        if (info.offset.x < -100) {
          onDelete();
        }
      }}
      className="relative"
    >
      {children}
      <motion.div
        className="absolute right-0 inset-y-0 bg-red-500 flex items-center px-4"
        style={{ opacity: 0 }}
        animate={{ opacity: 1 }}
      >
        Delete
      </motion.div>
    </motion.div>
  );
}
```

## Scroll Animations

### Scroll-Triggered

```tsx
import { motion, useInView } from 'framer-motion';
import { useRef } from 'react';

export function FadeInWhenVisible({ children }: { children: React.ReactNode }) {
  const ref = useRef(null);
  const isInView = useInView(ref, { once: true, margin: '-100px' });

  return (
    <motion.div
      ref={ref}
      initial={{ opacity: 0, y: 50 }}
      animate={isInView ? { opacity: 1, y: 0 } : { opacity: 0, y: 50 }}
      transition={{ duration: 0.6, ease: 'easeOut' }}
    >
      {children}
    </motion.div>
  );
}
```

### Scroll Progress

```tsx
import { motion, useScroll, useTransform } from 'framer-motion';

export function ParallaxHero() {
  const { scrollY } = useScroll();
  const y = useTransform(scrollY, [0, 500], [0, 150]);
  const opacity = useTransform(scrollY, [0, 300], [1, 0]);

  return (
    <motion.div
      style={{ y, opacity }}
      className="h-screen flex items-center justify-center"
    >
      <h1 className="text-6xl font-bold">Parallax Hero</h1>
    </motion.div>
  );
}

export function ScrollProgress() {
  const { scrollYProgress } = useScroll();

  return (
    <motion.div
      style={{ scaleX: scrollYProgress }}
      className="fixed top-0 left-0 right-0 h-1 bg-blue-500 origin-left z-50"
    />
  );
}
```

## Animation Hooks

### useAnimate (Imperative)

```tsx
import { useAnimate } from 'framer-motion';

export function SubmitButton() {
  const [scope, animate] = useAnimate();

  const handleClick = async () => {
    // Sequence of animations
    await animate(scope.current, { scale: 0.95 }, { duration: 0.1 });
    await animate(scope.current, { scale: 1 }, { type: 'spring' });

    // Success animation
    await animate(
      scope.current,
      { backgroundColor: '#22c55e' },
      { duration: 0.2 }
    );
  };

  return (
    <motion.button ref={scope} onClick={handleClick} className="px-4 py-2">
      Submit
    </motion.button>
  );
}
```

### useMotionValue & useTransform

```tsx
import { motion, useMotionValue, useTransform } from 'framer-m