애니메이션 만들기 - Moving Eye

CSS 애니메이션 연습하기

마우스 커서를 따라 눈이 움직이는듯한 애니메이션을 만들어보겠습니다.

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결과

HTML

정육면체를 만들기 위해서 div박스를 6개 만들어줍니다.

<div class="wrapper">
    <div class="card">
        <div class="me">
            <div class="eye"></div>
        </div>
        <div class="text">무섭지</div>
    </div>
</div>

CSS

사진들을 위치를 잡아주고 눈은 각각 가상변수로 잡아줍니다.

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
} 
html, body {
    height: 100%;
    overflow: hidden;
}
.wrapper {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 369px;
    height: 547px;
    transform-style: preserve-3d;
}
.me {
    position: absolute;
    width: 369px;
    height: 547px;
    transform: translatez(80px) scale(0.8);
}
.me::before, .me::after {
    position: absolute;
    content: '';
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border-radius: 10px;
    background: url(http://www.supah.it/dribbble/006/profile.png) no-repeat 0 0;
}
.me::after {
    height: 30px;
    top: auto;
    bottom: -15px;
    filter: blur(15px);
    background-size: 100% 30px;
    border-radius: 100px;
}
.eye, .eye::before {
    width: 70px;
    height: 70px;
    position: absolute;
    top: 175px;
    left: 119px;
    z-index: -1;
    background: url(http://www.supah.it/dribbble/006/eye.png);
}
.eye::before {
    content: '';
    top: -3px;
    left: 99px;
}
.text {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 2;
    width: 390px;
    height: 595px;
    transform: translatez(150px) translatex(-11px) translatey(-26px) scale(.55);
    border: 3px solid #fff;
    text-align: center;
    font-size: 35px;
    line-height: 1000px;
    color: #fff;
    opacity: 0.3;
    border-radius: 15px;
    background : linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.36) 39%, rgba(255,255,255,0) 51%, #000 100%);
}
  
.text::after {
    content : 'moving eye';
    width: 100%;
    position: absolute;
    bottom: 22px;
    left: 0;
    z-index: 1;
    line-height: 1;
    font-size: 18px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 20px;
    text-indent: 20px;
}

JS

전체 사진배경과, 눈을 각각 잡아준뒤 마우스 커서에 위치에 따라 움직이도록 설정합니다.

const wrap = document.querySelector('.wrapper');
const eye = document.querySelector('.eye');
const speed = 1;
let x = 0;
let y = 0;
let followX = 0;
let followY = 0;

function animate() {
    x += (followX - x) * speed;
    y += (followY - y) * speed;
    eye.style.transform = `translate(${-x}px, ${-y}px)`;
    wrap.style.transform = `translate(-50%, -50%) perspective(600px) rotateX(${-y}deg) rotateY(${-x}deg)`;
    requestAnimationFrame(animate);
}

window.addEventListener('mousemove', (e) => {
    let mouseX = Math.max(-100, Math.min(100, window.innerWidth / 2 - e.clientX));
    let mouseY = Math.max(-100, Math.min(100, window.innerHeight / 2 - e.clientY));
    
    followX = (12 * mouseX) / 100;
    followY = (10 * mouseY) / 100;
});

window.addEventListener('keydown', (e) => {
    switch(e.keyCode) {
    case 37:
        followX = 12;
        break;
    case 38:
        followY = 10;
        break;
    case 39:
        followX = -12;
        break;
    case 40:
        followY = -10;
        break;
    default:
        break;
    }
});
animate();    

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