parallaxEffect05

패럴렉스 이펙트 - 이질감 효과

이질감 효과를 만들어봅시다.

원본 소스 보기

원본 사이트

---

html

parallax__info를 추가합니다.

코드보기

<main id="parallax__cont">
    <div id="contents">
        <section id="section1" class="content__item">
            <span class="content__item__num">01</span>
            <h2 class="content__item__title">section1</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">얕은 사람은 행운을 믿으며, 강한 사람은 원인과 결과를 믿는다.</p>
        </section>
        <!-- // section1 -->

        <section id="section2" class="content__item">
            <span class="content__item__num">02</span>
            <h2 class="content__item__title">section2</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">지난 일은 어쩔 수 없는 바 슬퍼한들 이미 엎질러진 물이다.</p>
        </section>
        <!-- // section2 -->

        <section id="section3" class="content__item">
            <span class="content__item__num">03</span>
            <h2 class="content__item__title">section3</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">행동하는 사람처럼 생각하고, 생각하는 사람처럼 행동하라.</p>
        </section>
        <!-- // section3 -->

        <section id="section4" class="content__item">
            <span class="content__item__num">04</span>
            <h2 class="content__item__title">section4</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">실수할 자유가 없는 자유란 가치가 없다.</p>
        </section>
        <!-- // section4 -->

        <section id="section5" class="content__item">
            <span class="content__item__num">05</span>
            <h2 class="content__item__title">section5</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">끝까지 해보기 전까지는 늘 불가능해 보입니다.</p>
        </section>
        <!-- // section5 -->

        <section id="section6" class="content__item">
            <span class="content__item__num">06</span>
            <h2 class="content__item__title">section6</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">고통은 잠깐이다. 포기는 영원히 남는다.</p>
        </section>
        <!-- // section6 -->

        <section id="section7" class="content__item">
            <span class="content__item__num">07</span>
            <h2 class="content__item__title">section7</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">희망을 품지 않은 자는 절망도 할 수 없다.</p>
        </section>
        <!-- // section7 -->

        <section id="section8" class="content__item">
            <span class="content__item__num">08</span>
            <h2 class="content__item__title">section8</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">뭔가를 위해 시도조차하려는 용기가 없다면 삶이 무슨 의미가 있을까?</p>
        </section>
        <!-- // section8 -->

        <section id="section9" class="content__item">
            <span class="content__item__num">09</span>
            <h2 class="content__item__title">section9</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>

            <p class="content__item__desc">꿈을 꾸세요. 그러면 그 꿈이 당신을 만들 것입니다.</p>
        </section>
        <!-- // section9 -->
    </div>
</main>
<!-- // main -->

<aside id="parallax__info">
    <div class="scroll">scrollTop : <span>0</span>px</div>
</aside>
<!-- //parallax__info -->

css

이전에 있던 트랜지션에 대한 css를 지워줍니다. parallax__info에 대한 css를 추가합니다.

코드보기

/* parallax */
/* parallax__nav */
#parallax__nav {
    position: fixed;
    right: 20px;
    top: 20px;
    z-index: 2000;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 20px 30px;
    border-radius: 50px;
    transition: top 0.4s ease;
}

#parallax__nav li {
    display: inline;
    margin: 0 5px;
}

#parallax__nav li a {
    display: inline-block;
    height: 30px;
    padding: 5px 20px;
    text-align: center;
    line-height: 30px;
}

#parallax__nav li.active a {
    background: #fff;
    color: #000;
    border-radius: 20px;
    box-sizing: content-box;
}

#parallax__cont {
    max-width: 1600px;
    width: 98%;
    margin: 0 auto;
    /* background-color: rgba(255, 255, 255, 0.1); */
}

.content__item {
    width: 1000px;
    max-width: 70vw;
    margin: 30vw auto;
    /* background-color: rgba(255, 255, 255, 0.3); */
    text-align: left;
    margin-right: 0;
    position: relative;
    padding-top: 8vw;
}

.content__item:nth-child(even) {
    margin-left: 0;
    text-align: right;
}

.content__item__num {
    font-size: 35vw;
    font-weight: 100;
    font-family: 'Lato';
    position: absolute;
    left: -5vw;
    top: -16vw;
    opacity: 0.07;
    z-index: -2;
}

.content__item:nth-child(even) .content__item__num {
    left: auto;
    right: -5vw;
}

.content__item__title {
    font-weight: 400;
    text-transform: capitalize;
}

.content__item__imgWrap {
    width: 100%;
    padding-bottom: 56.25%;
    background: #000;
    position: relative;
    overflow: hidden;
    z-index: -1;
}

.content__item__img {
    position: absolute;
    background: url(../assets/img/effect_bg19-min.jpg);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    width: 110%;
    height: 110%;
    left: -5%;
    top: -5%;
    filter: saturate(0%);
    /* transition: all 1s; */
}

.content__item:nth-child(1) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg20-min.jpg);
}

.content__item:nth-child(2) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg19-min.jpg);
}

.content__item:nth-child(3) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg18-min.jpg);
}

.content__item:nth-child(4) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg17-min.jpg);
}

.content__item:nth-child(5) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg16-min.jpg);
}

.content__item:nth-child(6) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg11-min.jpg);
}

.content__item:nth-child(7) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg14-min.jpg);
}

.content__item:nth-child(8) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg13-min.jpg);
}

.content__item:nth-child(9) .content__item__img {
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../assets/img/effect_bg12-min.jpg);
}

.content__item__desc {
    font-size: 4vw;
    line-height: 1.4;
    margin-top: -5vw;
    margin-left: -4vw;
    word-break: keep-all;
}

.content__item:nth-child(even) .content__item__desc {
    /* 2n도 가능 */
    margin-left: auto;
    margin-right: -4vw;
}

#parallax__info {
    position: fixed;
    left: 20px;
    bottom: 20px;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
}

#parallax__info li,
.scroll {
    line-height: 1.4;
}

@media (max-width: 800px) {
    #parallax__cont {
        margin-top: 70vw;
    }

    #parallax__nav {
        padding: 10px;
        right: auto;
        left: 10px;
        top: 50%;
        transform: translateY(-50%);
        border-radius: 5px;
        background-color: rgba(0, 0, 0, 0.8);
    }

    #parallax__nav li {
        display: block;
        margin: 5px;
    }

    #parallax__nav li a {
        font-size: 14px;
        padding: 5px;
        border-radius: 5px;
        height: auto;
        line-height: 1;
    }

    #parallax__nav li.active a {
        border-radius: 5px;
    }

    #parallax__info {
        left: 10px;
        bottom: 10px;
    }
}

js

페이지의 스크롤탑 값을 구한 뒤, 스크롤탑 값의 수치가 나오는 것을 반올림 하고, 효과를 줄 이미지, 글, 숫자에 변수를 선언합니다.
보고 있으면, 스크롤탑과 오프셋탑 값이 같음.(약간의 오차) 이론상 오프셋 값 0이며, 오차를 주기 위해 숫자를 곱합니다. 숫자가 클수록 효과가 커보입니다.
효과를 부드럽게 넣기 위해서는 GSAP를 사용하는 것이 좋습니다. GreenSock 사이트의 Docs에 들어가면 효과들이 ease 효과들이 있어서 참고해서 부여하면 됩니다.

function scroll() {
    let scrollTop = window.pageYOffset || document.documentElement.scrollTop;

    document.querySelector("#parallax__info span").innerText = Math.ceil(scrollTop);

    document.querySelectorAll(".content__item").forEach(item => {
        const target1 = item.querySelector(".content__item__img");  //이미지
        const target2 = item.querySelector(".content__item__desc"); //글
        const target3 = item.querySelector(".content__item__num");  //뒤에 숫자

        let offset1 = (scrollTop - item.offsetTop) * 0.1;
        let offset2 = (scrollTop - item.offsetTop) * 0.15;
        let offset3 = (scrollTop - item.offsetTop) * 0.2;
        // 보고 있으면, 스크롤탑과 오프셋탑 값이 같음.(약간의 오차) 이론상 오프셋 값 0

        // target1.style.transform = `translateY(${offset1}px)`;
        // target2.style.transform = `translateX(${offset2}px)`;

        gsap.to(target1, { duration: .3, y: offset1, ease: "power4.out" })
        gsap.to(target2, { duration: .3, y: offset2 })
        gsap.to(target3, { duration: .3, y: offset3, ease: "expo.out" })
    });

    requestAnimationFrame(scroll);
}
scroll();