인프런 커뮤니티 질문&답변

박용진님의 프로필 이미지

작성한 질문수

애플 웹사이트 인터랙션 클론!

캔버스 드로우 애니메이션 1

오류

해결된 질문

작성

·

264

0

검은 박스가 밖에서 안으로 들어오려는거 같은데 원인을 알 수 있을까요?

case 3:
                // 가로, 세로 모두 100%로 채우기 위한 세팅(계산 필요)
                const widthRatio = window.innerWidth / objs.canvas.width;
                const heightRatio = window.innerHeight / objs.canvas.height;
                let canvasScaleRatio;

                if (widthRatio <= heightRatio) {
                    // 브라우저 width < 캔버스 width인 경우
                    canvasScaleRatio = heightRatio;
                } else {
                    // 브라우저 height < 캔버스 height 경우
                    canvasScaleRatio = widthRatio;
                }
                objs.canvas.style.transform = `scale(${canvasScaleRatio})`;
                objs.context.drawImage(objs.images[0], 0, 0);

                // 캔버스 사이즈에 맞춰 가정한 innerWdth와 innerHeight
                const recalculatedInnerWidth = document.body.offsetWidth / canvasScaleRatio;
                const recalculatedInnerHeight = window.innerHeight / canvasScaleRatio;

                if (!values.rectStartY) {
                    // values.rectStartY = objs.canvas.getBoundingClientRect().top;
                    values.rectStartY = objs.canvas.offsetTop + (objs.canvas.height - objs.canvas.height * canvasScaleRatio) / 2;
                    values.rect1X[2].end = values.rectStartY / scrollHeight;
                    values.rect2X[2].end = values.rectStartY / scrollHeight;
                }

                const whiteRectWidth = recalculatedInnerWidth * 0.15;
                values.rect1X[0] = (objs.canvas.width - recalculatedInnerWidth) / 2;
                values.rect1X[1] = values.rect1X[0] - whiteRectWidth;
                values.rect2X[0] = values.rect1X[0] + recalculatedInnerWidth - whiteRectWidth;
                values.rect2X[1] = values.rect2X[0] + whiteRectWidth;

                // 좌우 화이트박스 그리기
                // objs.context.fillRect(values.rect1X[0], 0, parseInt(whiteRectWidth), objs.canvas.height);
                // objs.context.fillRect(values.rect2X[0], 0, parseInt(whiteRectWidth), objs.canvas.height);
                objs.context.fillRect(
                    parseInt(calcValues(values.rect1X, currentYOffset)),
                    0,
                    parseInt(whiteRectWidth),
                    objs.canvas.height
                );
                objs.context.fillRect(
                    parseInt(calcValues(values.rect2X, currentYOffset)),
                    0,
                    parseInt(whiteRectWidth),
                    objs.canvas.height
                );

                break;

답변 5

1

1분코딩님의 프로필 이미지
1분코딩
지식공유자

if (!values.rectStartY) {

    // values.rectStartY = objs.canvas.getBoundingClientRect().top;

    values.rectStartY = objs.canvas.offsetTop + (objs.canvas.height - objs.canvas.height * canvasScaleRatio) / 2;

    values.rect1X[2].end = values.rectStartY / scrollHeight;

    values.rect2X[2].end = values.rectStartY / scrollHeight;

}

이 부분에서 end만 있고 start 파트가 빠져있네요~
start를 아래와같이 넣어주니 정상 동작합니다^^

if (!values.rectStartY) {

// values.rectStartY = objs.canvas.getBoundingClientRect().top;

values.rectStartY = objs.canvas.offsetTop + (objs.canvas.height - objs.canvas.height * canvasScaleRatio) / 2;

values.rect1X[2].start = (window.innerHeight / 2) / scrollHeight;

values.rect2X[2].start = (window.innerHeight / 2) / scrollHeight;

values.rect1X[2].end = values.rectStartY / scrollHeight;

values.rect2X[2].end = values.rectStartY / scrollHeight;

}

0

저도 안되는 부분이 있어 댓글남깁니다. 제 코드는 이렇습니다.

(() => {
    let yOffset = 0;
    let prevScrollHeight = 0; //current scroll yOffset previous scroll sections sum of heights
    let currentScene = 0;// currently activated scene in front of our eye
    let enterNewScene = false; //whne new scene set, starts true

    const sceneInfo = [
        {
            type: 'sticky',
            scrollHeight: 0,
            heightNum: 5,// browser's height times 5 to set scrollHeight
            objs:{
                container: document.querySelector('#scroll-section-0'),
                messageA: document.querySelector('#scroll-section-0 .main-message.a'),
                messageB: document.querySelector('#scroll-section-0 .main-message.b'),
                messageC: document.querySelector('#scroll-section-0 .main-message.c'),
                messageD : document.querySelector('#scroll-section-0 .main-message.d'),
                canvas: document.querySelector('#video-canvas-0'),
                context: document.querySelector('#video-canvas-0').getContext('2d'),
                videoImages: [],
            },
            values: {
                // in
                messageA_opacity: [0,1, {start: 0.1, end:0.2}],
                messageA_translateY_in: [20, 0, {start:0.1, end:0.2}],
                messageB_opacity: [0,1, {start: 0.3, end:0.4}],
                messageB_translateY_in: [20, 0, {start:0.3, end:0.4}],
                messageC_opacity: [0,1, {start: 0.5, end:0.6}],
                messageC_translateY_in: [20, 0, {start:0.5, end:0.6}],
                messageD_opacity: [0,1, {start: 0.7, end:0.8}],
                messageD_translateY_in: [20, 0, {start:0.7, end:0.8}],

                // out
                messageA_opacity_out: [1,0,{start:0.25, end:0.3}],
                messageA_translateY_out: [0, -20, {start:0.25, end:0.3}],
                messageB_opacity_out: [1,0,{start:0.45, end:0.5}],
                messageB_translateY_out: [0, -20, {start:0.45, end:0.5}],
                messageC_opacity_out: [1,0,{start:0.65, end:0.7}],
                messageC_translateY_out: [0, -20, {start:0.65, end:0.7}],
                messageD_opacity_out: [1,0,{start:0.85, end:0.9}],
                messageD_translateY_out: [0, -20, {start:0.85, end:0.9}],

                // images
                videoIMageCount: 300,
                imageSequence: [0, 299],

                //canvas
                canvas_opacity: [1,0,{start:0.9,end:1}]



            }
        },
        {
            type: 'normal',
            scrollHeight: 0,
            heightNum: 5,// browser's height times 5 to set scrollHeight,
            objs:{
                container: document.querySelector('#scroll-section-1')
            }
        },
        {
            type: 'sticky',
            scrollHeight: 0,// for compatibility purposes
            heightNum: 5,// browser's height times 5 to set scrollHeight
            objs:{
                container: document.querySelector('#scroll-section-2'),
                messageA: document.querySelector('#scroll-section-2 .a'),
                messageB: document.querySelector('#scroll-section-2 .b'),
                messageC: document.querySelector('#scroll-section-2 .c'),
                pinB: document.querySelector('#scroll-section-2 .b .pin'),
                pinC: document.querySelector('#scroll-section-2 .c .pin'),
                canvas: document.querySelector('#video-canvas-1'),
                context: document.querySelector('#video-canvas-1').getContext('2d'),
                videoImages: [],
            },
            values:{
                messageA_translateY_in: [20, 0, {start:0.15, end:0.2}],
                messageB_translateY_in: [30, 0, {start:0.5, end:0.55}],
                messageC_translateY_in: [30, 0, {start:0.72, end:0.77}],
                messageA_opacity: [0,1,{start:0.15, end:0.2}],
                messageB_opacity: [0,1,{start:0.5, end:0.55}],
                messageC_opacity: [0,1,{start:0.72, end:0.77}],
                messageA_translateY_out: [0,-20, {start:0.3, end:0.35}],
                messageB_translateY_out: [0,-20, {start:0.58, end:0.63}],
                messageC_translateY_out: [0,-20, {start:0.85, end:0.9}],
                messageA_opacity_out: [1,0,{start:0.3, end:0.35}],
                messageB_opacity_out: [1,0,{start:0.58, end:0.63}],
                messageC_opacity_out: [1,0,{start:0.85, end:0.9}],
                pinB_scaleY:  [0.5,1,{start:0.5, end:0.55}],
                pinC_scaleY:  [0.5,1,{start:0.72, end:0.77}],
                pinB_opacity: [0,1,{start:0.5, end:0.55}],
                pinC_opacity: [0,1,{start:0.72, end:0.77}],
                pinB_opacity_out:[1,0,{start:0.58, end:0.63}],
                pinC_opacity_out:[1,0,{start:0.85, end:0.9}],
                // images
                videoIMageCount: 960,
                imageSequence: [0, 959],

                //canvas
                canvas_opacity: [0,1,{start:0,end:0.1}],
                canvas_opacity_out: [1,0,{start: 0.95, end:1}]
            }
        },
        {
            type: 'sticky',
            scrollHeight: 0,
            heightNum: 5,// browser's height times 5 to set scrollHeight
            objs:{
                container: document.querySelector('#scroll-section-3'),
                canvasCaption: document.querySelector('.canvas-caption'),
                canvas: document.querySelector('.image-blend-canvas'),
                context: document.querySelector('.image-blend-canvas').getContext('2d'),
                imagesPath: [
                    './images/blend-image-1.jpg',
                    './images/blend-image-2.jpg',
                ],
                images:[]
            },
            values: {
                rect1X: [0,0,{start:0, end:0}],
                rect2X: [0,0,{start:0, end:0}],
                rectStartY: 0,
            }
        },
    ]

    function setCanvasImages(){
        let imgElem;
        for(let i =0; i < sceneInfo[0].values.videoIMageCount; i++){
            imgElem = document.createElement('img');
            // imgElem = new Image()
            imgElem.src = `./video/001/IMG_${6726+i}.JPG`;
            sceneInfo[0].objs.videoImages.push(imgElem);
        }

        let imgElem2;
        for(let i =0; i < sceneInfo[2].values.videoIMageCount; i++){
            imgElem2 = document.createElement('img');
            // imgElem = new Image()
            imgElem2.src = `./video/002/IMG_${7027+i}.JPG`;
            sceneInfo[2].objs.videoImages.push(imgElem2);
        }

        let imgElem3;
        for(let i =0; i< sceneInfo[3].objs.imagesPath.length; i++){
            imgElem3 = new Image();
            imgElem3.src = sceneInfo[3].objs.imagesPath[i];
            sceneInfo[3].objs.images.push(imgElem3)
        }
    }

    // store images into array
    setCanvasImages();

    function setLayout(){
        // each scroll section's height set
        for(let i =0; i < sceneInfo.length; i++){
            // however, when type is normal, we set to contents height because no need to animation
            if(sceneInfo[i].type==='sticky'){
                sceneInfo[i].scrollHeight = sceneInfo[i].heightNum * window.innerHeight;
                sceneInfo[i].objs.container.style.height = `${sceneInfo[i].scrollHeight}px`
            }else{
                sceneInfo[i].scrollHeight = sceneInfo[i].objs.container.offsetHeight;
            }
            sceneInfo[i].objs.container.style.height = `${sceneInfo[i].scrollHeight}px`;


        }

        yOffset = 0;
        let totalScrollHeight = 0;
        for(let i = 0; i< sceneInfo.length; i++){
            totalScrollHeight += sceneInfo[i].scrollHeight;
            if(totalScrollHeight >= yOffset){
                currentScene = i;
                break;
            }
        }
        document.body.setAttribute('id', `show-scene-${currentScene}`);

        const heightRatio = window.innerHeight/1080;
        // multiply window ratio to the current browser's height
        sceneInfo[0].objs.canvas.style.transform = `translate3d(-50%, -50%, 0) scale(${heightRatio})`;
        sceneInfo[2].objs.canvas.style.transform = `translate3d(-50%, -50%, 0) scale(${heightRatio})`;

    }


    // the ratio of current scrolled values in terms of Y offset
    function calcValues(values, currentYOffset){
        let rv;
        const scrollHeight = sceneInfo[currentScene].scrollHeight;
        // current Scene, scrolled section need to be factored
        let scrollRatio = currentYOffset / sceneInfo[currentScene].scrollHeight;

        // specific start ~ specific end animation activated
        if(values.length ===3){
            const partScrollStart = values[2].start * scrollHeight;
            const partScrollEnd = values[2].end * scrollHeight;
            const partScrollHeight = partScrollEnd - partScrollStart;

            if(currentYOffset >= partScrollStart && currentYOffset <= partScrollEnd){
                rv = (currentYOffset - partScrollStart) / partScrollHeight * (values[1] - values[0]) + values[0]
            }else if(currentYOffset < partScrollStart){
                rv = values[0];
            }else if(currentYOffset > partScrollEnd){
                rv =values[1];
            }
        } else{
            rv = scrollRatio * (values[1] - values[0]) + values[0]
        }

        return rv;
    }

    function playAnimation(){
        const objs = sceneInfo[currentScene].objs;
        const values = sceneInfo[currentScene].values;
        const currentYOffset = yOffset - prevScrollHeight;

        //current scene's ratio current height
        const scrollRatio = currentYOffset / sceneInfo[currentScene].scrollHeight;

        switch(currentScene){
            case 0:
                // getting the sequence and scrolls of it
                let sequence = Math.round(calcValues(values.imageSequence, currentYOffset));
                objs.context.drawImage(objs.videoImages[sequence], 0, 0);
                objs.canvas.style.opacity = calcValues(values.canvas_opacity, currentYOffset);

                // scrolling and interaction with texts
                if (scrollRatio <= 0.22){
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity, currentYOffset);
                    objs.messageA.style.transform = `translateY(${calcValues(values.messageA_translateY_in, currentYOffset)}%)`;

                }else{
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity_out, currentYOffset);
                    objs.messageA.style.transform = `translateY(${calcValues(values.messageA_translateY_out, currentYOffset)}%)`;
                }

                if(scrollRatio <= 0.42){
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity, currentYOffset);
                    objs.messageB.style.transform = `translateY(${calcValues(values.messageB_translateY_in, currentYOffset)}%)`;
                }
                else{
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity_out, currentYOffset);
                    objs.messageB.style.transform = `translateY(${calcValues(values.messageB_translateY_out, currentYOffset)}%)`;
                }

                if(scrollRatio <= 0.62){
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity, currentYOffset);
                    objs.messageC.style.transform = `translateY(${calcValues(values.messageC_translateY_in, currentYOffset)}%)`;
                }
                else{
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity_out, currentYOffset);
                    objs.messageC.style.transform = `translateY(${calcValues(values.messageC_translateY_out, currentYOffset)}%)`;
                }

                if(scrollRatio <= 0.82){
                    objs.messageD.style.opacity = calcValues(values.messageD_opacity, currentYOffset);
                    objs.messageD.style.transform = `translateY(${calcValues(values.messageD_translateY_in, currentYOffset)}%)`;
                }
                else{
                    objs.messageD.style.opacity = calcValues(values.messageD_opacity_out, currentYOffset);
                    objs.messageD.style.transform = `translateY(${calcValues(values.messageD_translateY_out, currentYOffset)}%)`;
                }


                //css
                break;
            case 1:
                break;
            case 2:
                // getting the sequence and scrolls of it
                let sequence2 = Math.round(calcValues(values.imageSequence, currentYOffset));
                objs.context.drawImage(objs.videoImages[sequence2], 0, 0);
                objs.canvas.style.opacity = calcValues(values.canvas_opacity, currentYOffset);

                // this is only for canvas opacity
                if(scrollRatio <= 0.5){
                    //in
                    objs.canvas.style.opacity = calcValues(values.canvas_opacity, currentYOffset);
                }else{
                    //out
                    objs.canvas.style.opacity = calcValues(values.canvas_opacity_out, currentYOffset);
                }


                if (scrollRatio <= 0.22){
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity, currentYOffset);
                    objs.messageA.style.transform = `translate3d(0, ${calcValues(values.messageA_translateY_in, currentYOffset)}%, 0)`;

                }else{
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity_out, currentYOffset);
                    objs.messageA.style.transform = `translateY(${calcValues(values.messageA_translateY_out, currentYOffset)}%)`;
                }

                if(scrollRatio <= 0.57){
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity, currentYOffset);
                    objs.messageB.style.transform = `translate3d(0, ${calcValues(values.messageB_translateY_in, currentYOffset)}%, 0)`;
                    objs.pinB.style.transform = `scaleY(${calcValues(values.pinB_scaleY, currentYOffset)})`;
                }
                else{
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity_out, currentYOffset);
                    objs.messageB.style.transform = `translateY(${calcValues(values.messageB_translateY_out, currentYOffset)}%)`;
                }

                if(scrollRatio <= 0.79){
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity, currentYOffset);
                    objs.messageC.style.transform = `translate3d(0, ${calcValues(values.messageC_translateY_in, currentYOffset)}%, 0)`;
                    objs.pinC.style.transform = `scaleY(${calcValues(values.pinC_scaleY, currentYOffset)})`;

                }
                else{
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity_out, currentYOffset);
                    objs.messageC.style.transform = `translateY(${calcValues(values.messageC_translateY_out, currentYOffset)}%)`;
                    objs.pinC.style.transform = `scaleY(${calcValues(values.pinC_scaleY, currentYOffset)})`;
                }

                break;
            case 3:
                // fill out the height and cross
                console.log('in case 3')
                // these ratios are required for getting the width and height ratio
                // const widthRatio = window.innerWidth / objs.canvas.width;
                const widthRatio = window.innerWidth / objs.canvas.width;
                const heightRatio = window.innerHeight / objs.canvas.height;
                // const heightRatio = window.innerHeight / objs.canvas.height;
                let canvasScaleRatio;

                if(widthRatio <= heightRatio){
                    //when brwoser is thinner than canvas
                    canvasScaleRatio = heightRatio;
                    console.log('height Ratio has been decided');
                }else{
                    // when browser is fatter than canvas
                    canvasScaleRatio = widthRatio;
                    console.log('widthRatio decided')
                }
                objs.canvas.style.transform = `scale(${canvasScaleRatio})`;
                // objs.canvas.style.height = String(canvasScaleRatio * 1080);
                // objs.canvas.style.width = String(canvasScaleRatio * 1920);
                objs.context.drawImage(objs.images[0],0,0);

                // fit to canvas size, innerwidth and innerHeight
                const recalculatedInnerWidth = window.innerWidth / canvasScaleRatio;
                const recalculatedInnerHeight = window.innerHeight / canvasScaleRatio;

                if(!values.rectStartY){
                    // values.rectStartY = objs.canvas.getBoundingClientRect().top;
                    values.rectStartY = objs.canvas.offsetTop + (objs.canvas.height - objs.canvas.height * canvasScaleRatio) / 2;

                    values.rect1X[2].end = values.rectStartY / sceneInfo[3].scrollHeight;
                    values.rect2X[2].end = values.rectStartY / sceneInfo[3].scrollHeight;
                }

                console.log(values.rect2X[2])

                const whiteRectWidth = recalculatedInnerWidth * 0.15;
                values.rect1X[0] = (objs.canvas.width - recalculatedInnerWidth) /2;
                values.rect1X[1] = values.rect1X[0] - whiteRectWidth;
                values.rect2X[0] = values.rect1X[0] + recalculatedInnerWidth - whiteRectWidth;
                values.rect2X[1] = values.rect2X[0] + whiteRectWidth;

                // left right white box drawing

                objs.context.fillRect(
                    parseInt(calcValues(values.rect1X, currentYOffset)),
                    0,
                    parseInt(whiteRectWidth),
                    objs.canvas.height
                );
                console.log(parseInt(calcValues(values.rect2X, currentYOffset)),'should inccrease', currentYOffset)
                objs.context.fillRect(
                    parseInt(calcValues(values.rect2X, currentYOffset)),
                    0,
                    parseInt(whiteRectWidth),
                    objs.canvas.height
                );
                // objs.context.fillRect(values.rect2X[0],0, parseInt(whiteRectWidth), recalculatedInnerHeight);
                break;
        }
    }


    //increase the current scene and calculate prevScrollHeight of current scene
    function scrollLoop(){
        enterNewScene = false;
        prevScrollHeight = 0
        for(let i =0; i < currentScene; i++){
            prevScrollHeight += sceneInfo[i].scrollHeight;
        }

        if(yOffset > prevScrollHeight + sceneInfo[currentScene].scrollHeight && currentScene < sceneInfo.length-1){
            currentScene ++;
            enterNewScene = true;
            document.body.setAttribute('id', `show-scene-${currentScene}`);
        }

        if(yOffset < prevScrollHeight){
            if(currentScene===0) return;
            currentScene --;
            enterNewScene = true;
            document.body.setAttribute('id', `show-scene-${currentScene}`);
        }

        if(enterNewScene) return;
        playAnimation();
    }

    //whenever browser resizes
    window.addEventListener('scroll', () => {
        // call necessary function in here
        yOffset = window.pageYOffset;
        scrollLoop();
    })
    // window.addEventListener('DOMContentLoaded', setLayout);
    window.addEventListener('load',() => {
        setLayout();
        sceneInfo[0].objs.context.drawImage(sceneInfo[0].objs.videoImages[0],0,0);
    })
    window.addEventListener('resize', setLayout);
})();

박스2개가 아주 미미하게 움직이고있고, 디버깅을 해보는데, 도무지 원인을 찾을수가 없네요. 혹시 한번 확인해주시겠어요?

저도 같은 이슈로 디버깅 중인데 혹시 원인 찾으셨나요??

0

박용진님의 프로필 이미지
박용진
질문자

강의 순서상 박스 색상을 흰색으로 변경한 이후에 스타트를 입력하셨는데 왜 달랐는지가 의문이네요 ㅠㅠ

sceneInfo[3].values[2].start 오타가있네요 sctart 라고 써있어요!

0

박용진님의 프로필 이미지
박용진
질문자

(() => {
    let yOffset = 0; // window.pageYOffset 대신 사용할 변수
    let prevScrollHeight = 0; // 현재 스크롤 위치(yOffset)보다 이전에 위치한 스크롤 섹션들의 스크롤 높이값의 합
    let currentScene = 0; // 현재 활성화된(뷰포트) 씬(scroll-section)
    let enterNewScene = false; // 새로운 씬이 시작되는 순간 true

    const sceneInfo = [{
            // 0
            type: 'sticky',
            heightNum: 5, // 브라우저 높이의 5배로 scrollHeight 세팅
            scrollHeight: 0,
            objs: {
                container: document.querySelector('#scroll-section-0'),
                messageA: document.querySelector('#scroll-section-0 .main-message.a'),
                messageB: document.querySelector('#scroll-section-0 .main-message.b'),
                messageC: document.querySelector('#scroll-section-0 .main-message.c'),
                messageD: document.querySelector('#scroll-section-0 .main-message.d'),
                canvas: document.querySelector('#video-canvas-0'),
                context: document.querySelector('#video-canvas-0').getContext('2d'),
                videoImages: []
            },
            values: {
                videoImageCount: 300, // 이미지가 300장
                imageSequence: [0, 299], // 이미지 인덱스 
                canvas_opacity: [1, 0, { start: 0.9, end: 1 }],
                messageA_opacity_in: [0, 1, { start: 0.1, end: 0.2 }],
                messageB_opacity_in: [0, 1, { start: 0.3, end: 0.4 }],
                messageC_opacity_in: [0, 1, { start: 0.5, end: 0.6 }],
                messageD_opacity_in: [0, 1, { start: 0.7, end: 0.8 }],
                messageA_translateY_in: [20, 0, { start: 0.1, end: 0.2 }],
                messageB_translateY_in: [20, 0, { start: 0.3, end: 0.4 }],
                messageC_translateY_in: [20, 0, { start: 0.5, end: 0.6 }],
                messageD_translateY_in: [20, 0, { start: 0.7, end: 0.8 }],
                messageA_opacity_out: [1, 0, { start: 0.25, end: 0.3 }],
                messageB_opacity_out: [1, 0, { start: 0.45, end: 0.5 }],
                messageC_opacity_out: [1, 0, { start: 0.65, end: 0.7 }],
                messageD_opacity_out: [1, 0, { start: 0.85, end: 0.9 }],
                messageA_translateY_out: [0, -20, { start: 0.25, end: 0.3 }],
                messageB_translateY_out: [0, -20, { start: 0.45, end: 0.5 }],
                messageC_translateY_out: [0, -20, { start: 0.65, end: 0.7 }],
                messageD_translateY_out: [0, -20, { start: 0.85, end: 0.9 }]
            }
        },
        {
            // 1
            type: 'normal',
            // heightNum: 5, // type normal에서는 필요 없음
            scrollHeight: 0,
            objs: {
                container: document.querySelector('#scroll-section-1')
            }
        },
        {
            // 2
            type: 'sticky',
            heightNum: 5,
            scrollHeight: 0,
            objs: {
                container: document.querySelector('#scroll-section-2'),
                messageA: document.querySelector('#scroll-section-2 .a'),
                messageB: document.querySelector('#scroll-section-2 .b'),
                messageC: document.querySelector('#scroll-section-2 .c'),
                pinB: document.querySelector('#scroll-section-2 .b .pin'),
                pinC: document.querySelector('#scroll-section-2 .c .pin'),
                canvas: document.querySelector('#video-canvas-1'),
                context: document.querySelector('#video-canvas-1').getContext('2d'),
                videoImages: []
            },
            values: {
                videoImageCount: 960,
                imageSequence: [0, 959],
                canvas_opacity_in: [0, 1, { start: 0, end: 0.1 }],
                canvas_opacity_out: [1, 0, { start: 0.95, end: 1 }],
                messageA_translateY_in: [20, 0, { start: 0.15, end: 0.2 }],
                messageB_translateY_in: [30, 0, { start: 0.6, end: 0.65 }],
                messageC_translateY_in: [30, 0, { start: 0.87, end: 0.92 }],
                messageA_opacity_in: [0, 1, { start: 0.25, end: 0.3 }],
                messageB_opacity_in: [0, 1, { start: 0.6, end: 0.65 }],
                messageC_opacity_in: [0, 1, { start: 0.87, end: 0.92 }],
                messageA_translateY_out: [0, -20, { start: 0.4, end: 0.45 }],
                messageB_translateY_out: [0, -20, { start: 0.68, end: 0.73 }],
                messageC_translateY_out: [0, -20, { start: 0.95, end: 1 }],
                messageA_opacity_out: [1, 0, { start: 0.4, end: 0.45 }],
                messageB_opacity_out: [1, 0, { start: 0.68, end: 0.73 }],
                messageC_opacity_out: [1, 0, { start: 0.95, end: 1 }],
                pinB_scaleY: [0.5, 1, { start: 0.6, end: 0.65 }],
                pinC_scaleY: [0.5, 1, { start: 0.87, end: 0.92 }]
            }
        },
        {
            // 3
            type: 'sticky',
            heightNum: 5,
            scrollHeight: 0,
            objs: {
                container: document.querySelector('#scroll-section-3'),
                canvasCaption: document.querySelector('.canvas-caption'),
                canvas: document.querySelector('.image-blend-canvas'),
                context: document.querySelector('.image-blend-canvas').getContext('2d'),
                imagePath: [
                    './images/blend-image-1.jpg',
                    './images/blend-image-2.jpg'
                ],
                images: []
            },
            values: {
                rect1X: [0, 0, { sctart: 0, end: 0 }],
                rect2X: [0, 0, { sctart: 0, end: 0 }],
                rectStartY: 0
            }
        }
    ];

    function setCanvasImages() {
        let imgElem;
        for (let i = 0; i < sceneInfo[0].values.videoImageCount; i++) {
            imgElem = new Image();
            imgElem.src = `./video/001/IMG_${6726 + i}.JPG`;
            sceneInfo[0].objs.videoImages.push(imgElem);
        }

        let imgElem2;
        for (let i = 0; i < sceneInfo[2].values.videoImageCount; i++) {
            imgElem2 = new Image();
            imgElem2.src = `./video/002/IMG_${7027 + i}.JPG`;
            sceneInfo[2].objs.videoImages.push(imgElem2);
        }
        let imgElem3;
        for (let i = 0; i < sceneInfo[3].objs.imagePath.length; i++) {
            imgElem3 = new Image();
            imgElem3.src = sceneInfo[3].objs.imagePath[i];
            sceneInfo[3].objs.images.push(imgElem3);
        }
    }

    setCanvasImages();

    function setLayout() {
        // 각 스크롤 섹션의 높이 세팅
        for (let i = 0; i < sceneInfo.length; i++) {
            if (sceneInfo[i].type === 'sticky') {
                sceneInfo[i].scrollHeight = sceneInfo[i].heightNum * window.innerHeight;
            } else if (sceneInfo[i].type === 'normal') {
                sceneInfo[i].scrollHeight = sceneInfo[i].objs.container.offsetHeight;
            }
            sceneInfo[i].objs.container.style.height = `${sceneInfo[i].scrollHeight}px`;
        }

        // 새로고침 이슈 방지
        yOffset = window.pageYOffset;
        let totalScrollHeight = 0;
        for (let i = 0; i < sceneInfo.length; i++) {
            totalScrollHeight += sceneInfo[i].scrollHeight;
            if (totalScrollHeight >= yOffset) {
                currentScene = i;
                break;
            }
        }
        document.body.setAttribute("id", `show-scene-${currentScene}`);
        const heightRatio = window.innerHeight / 1080;
        sceneInfo[0].objs.canvas.style.transform = `translate3d(-50%, -50%,0) scale(${heightRatio})`;
        sceneInfo[2].objs.canvas.style.transform = `translate3d(-50%, -50%,0) scale(${heightRatio})`;
    }

    function calcValues(values, currentYOffset) {
        let rv;
        // 현재 씬(스크롤섹션)에서 스크롤된 범위를 비율로 구하기
        const scrollHeight = sceneInfo[currentScene].scrollHeight;
        const scrollRatio = currentYOffset / scrollHeight;

        if (values.length === 3) {
            // start ~ end 사이에 애니메이션 실행
            const partScrollStart = values[2].start * scrollHeight;
            const partScrollEnd = values[2].end * scrollHeight;
            const partScrollHeight = partScrollEnd - partScrollStart;

            if (currentYOffset >= partScrollStart && currentYOffset <= partScrollEnd) {
                rv = (currentYOffset - partScrollStart) / partScrollHeight * (values[1] - values[0]) + values[0];
            } else if (currentYOffset < partScrollStart) {
                rv = values[0];
            } else if (currentYOffset > partScrollEnd) {
                rv = values[1];
            }
        } else {
            rv = scrollRatio * (values[1] - values[0]) + values[0];
        }

        return rv;
    }

    function playAnimation() {
        const objs = sceneInfo[currentScene].objs;
        const values = sceneInfo[currentScene].values;
        const currentYOffset = yOffset - prevScrollHeight;
        const scrollHeight = sceneInfo[currentScene].scrollHeight;
        const scrollRatio = currentYOffset / scrollHeight;

        switch (currentScene) {
            case 0:
                let sequence = Math.round(calcValues(values.imageSequence, currentYOffset));
                objs.context.drawImage(objs.videoImages[sequence], 0, 0);
                objs.canvas.style.opacity = calcValues(values.canvas_opacity, currentYOffset);
                if (scrollRatio <= 0.22) {
                    // in
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity_in, currentYOffset);
                    objs.messageA.style.transform = `translate3d(0, ${calcValues(values.messageA_translateY_in, currentYOffset)}%, 0)`;
                } else {
                    // out
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity_out, currentYOffset);
                    objs.messageA.style.transform = `translate3d(0, ${calcValues(values.messageA_translateY_out, currentYOffset)}%, 0)`;
                }

                if (scrollRatio <= 0.42) {
                    // in
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity_in, currentYOffset);
                    objs.messageB.style.transform = `translate3d(0, ${calcValues(values.messageB_translateY_in, currentYOffset)}%, 0)`;
                } else {
                    // out
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity_out, currentYOffset);
                    objs.messageB.style.transform = `translate3d(0, ${calcValues(values.messageB_translateY_out, currentYOffset)}%, 0)`;
                }

                if (scrollRatio <= 0.62) {
                    // in
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity_in, currentYOffset);
                    objs.messageC.style.transform = `translate3d(0, ${calcValues(values.messageC_translateY_in, currentYOffset)}%, 0)`;
                } else {
                    // out
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity_out, currentYOffset);
                    objs.messageC.style.transform = `translate3d(0, ${calcValues(values.messageC_translateY_out, currentYOffset)}%, 0)`;
                }

                if (scrollRatio <= 0.82) {
                    // in
                    objs.messageD.style.opacity = calcValues(values.messageD_opacity_in, currentYOffset);
                    objs.messageD.style.transform = `translate3d(0, ${calcValues(values.messageD_translateY_in, currentYOffset)}%, 0)`;
                } else {
                    // out
                    objs.messageD.style.opacity = calcValues(values.messageD_opacity_out, currentYOffset);
                    objs.messageD.style.transform = `translate3d(0, ${calcValues(values.messageD_translateY_out, currentYOffset)}%, 0)`;
                }

                break;

            case 2:
                let sequence2 = Math.round(calcValues(values.imageSequence, currentYOffset));
                objs.context.drawImage(objs.videoImages[sequence2], 0, 0);

                if (scrollRatio <= 0.5) {
                    // in
                    objs.canvas.style.opacity = calcValues(values.canvas_opacity_in, currentYOffset);
                } else {
                    // out
                    objs.canvas.style.opacity = calcValues(values.canvas_opacity_out, currentYOffset);
                }

                if (scrollRatio <= 0.32) {
                    // in
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity_in, currentYOffset);
                    objs.messageA.style.transform = `translate3d(0, ${calcValues(values.messageA_translateY_in, currentYOffset)}%, 0)`;
                } else {
                    // out
                    objs.messageA.style.opacity = calcValues(values.messageA_opacity_out, currentYOffset);
                    objs.messageA.style.transform = `translate3d(0, ${calcValues(values.messageA_translateY_out, currentYOffset)}%, 0)`;
                }

                if (scrollRatio <= 0.67) {
                    // in
                    objs.messageB.style.transform = `translate3d(0, ${calcValues(values.messageB_translateY_in, currentYOffset)}%, 0)`;
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity_in, currentYOffset);
                    objs.pinB.style.transform = `scaleY(${calcValues(values.pinB_scaleY, currentYOffset)})`;
                } else {
                    // out
                    objs.messageB.style.transform = `translate3d(0, ${calcValues(values.messageB_translateY_out, currentYOffset)}%, 0)`;
                    objs.messageB.style.opacity = calcValues(values.messageB_opacity_out, currentYOffset);
                    objs.pinB.style.transform = `scaleY(${calcValues(values.pinB_scaleY, currentYOffset)})`;
                }

                if (scrollRatio <= 0.93) {
                    // in
                    objs.messageC.style.transform = `translate3d(0, ${calcValues(values.messageC_translateY_in, currentYOffset)}%, 0)`;
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity_in, currentYOffset);
                    objs.pinC.style.transform = `scaleY(${calcValues(values.pinC_scaleY, currentYOffset)})`;
                } else {
                    // out
                    objs.messageC.style.transform = `translate3d(0, ${calcValues(values.messageC_translateY_out, currentYOffset)}%, 0)`;
                    objs.messageC.style.opacity = calcValues(values.messageC_opacity_out, currentYOffset);
                    objs.pinC.style.transform = `scaleY(${calcValues(values.pinC_scaleY, currentYOffset)})`;
                }

                break;

            case 3:
                // 가로, 세로 모두 100%로 채우기 위한 세팅(계산 필요)
                const widthRatio = window.innerWidth / objs.canvas.width;
                const heightRatio = window.innerHeight / objs.canvas.height;
                let canvasScaleRatio;

                if (widthRatio <= heightRatio) {
                    // 브라우저 width < 캔버스 width인 경우
                    canvasScaleRatio = heightRatio;
                } else {
                    // 브라우저 height < 캔버스 height 경우
                    canvasScaleRatio = widthRatio;
                }
                objs.canvas.style.transform = `scale(${canvasScaleRatio})`;
                objs.context.drawImage(objs.images[0], 0, 0);

                // 캔버스 사이즈에 맞춰 가정한 innerWdth와 innerHeight
                const recalculatedInnerWidth = document.body.offsetWidth / canvasScaleRatio;
                const recalculatedInnerHeight = window.innerHeight / canvasScaleRatio;

                if (!values.rectStartY) {
                    // values.rectStartY = objs.canvas.getBoundingClientRect().top;
                    values.rectStartY = objs.canvas.offsetTop + (objs.canvas.height - objs.canvas.height * canvasScaleRatio) / 2;
                    values.rect1X[2].end = values.rectStartY / scrollHeight;
                    values.rect2X[2].end = values.rectStartY / scrollHeight;
                }

                const whiteRectWidth = recalculatedInnerWidth * 0.15;
                values.rect1X[0] = (objs.canvas.width - recalculatedInnerWidth) / 2;
                values.rect1X[1] = values.rect1X[0] - whiteRectWidth;
                values.rect2X[0] = values.rect1X[0] + recalculatedInnerWidth - whiteRectWidth;
                values.rect2X[1] = values.rect2X[0] + whiteRectWidth;

                // 좌우 화이트박스 그리기
                // objs.context.fillRect(values.rect1X[0], 0, parseInt(whiteRectWidth), objs.canvas.height);
                // objs.context.fillRect(values.rect2X[0], 0, parseInt(whiteRectWidth), objs.canvas.height);
                objs.context.fillRect(
                    parseInt(calcValues(values.rect1X, currentYOffset)),
                    0,
                    parseInt(whiteRectWidth),
                    objs.canvas.height
                );
                objs.context.fillRect(
                    parseInt(calcValues(values.rect2X, currentYOffset)),
                    0,
                    parseInt(whiteRectWidth),
                    objs.canvas.height
                );

                break;
        }
    }


    function scrollLoop() {
        enterNewScene = false;
        prevScrollHeight = 0;
        for (let i = 0; i < currentScene; i++) {
            prevScrollHeight += sceneInfo[i].scrollHeight;
        }
        if (yOffset > prevScrollHeight + sceneInfo[currentScene].scrollHeight) {
            enterNewScene = true;
            currentScene++;
            document.body.setAttribute("id", `show-scene-${currentScene}`);
        }
        if (yOffset < prevScrollHeight) {
            if (currentScene === 0) return; // 브라우저 바운스 효과로 인해 마이너스가 되는 것을 방지(모바일)
            enterNewScene = true;
            currentScene--;
            document.body.setAttribute("id", `show-scene-${currentScene}`);
        }
        if (enterNewScene) return;
        playAnimation();
    }

    window.addEventListener("scroll", () => {
        yOffset = window.pageYOffset;
        scrollLoop();
    });
    // window.addEventListener("DOMContentLoadded", setLayout);
    window.addEventListener("load", () => {
        setLayout();
        sceneInfo[0].objs.context.drawImage(sceneInfo[0].objs.videoImages[0], 0, 0);

    });
    window.addEventListener("resize", setLayout);
})();

0

1분코딩님의 프로필 이미지
1분코딩
지식공유자

올려주신 부분만 따로 붙여넣어보니 정상 동작하는 것으로 보이는데
전체 코드를 한번 올려봐주시겠어요?