발생현상 : 새로고침 했을 경우 간혈적으로 이런 에러 문구가 출력이 됩니다. 섹션0부분에 이미지파일은 눈으로 봤을땐 정상적으로 출력된 상황입니다.
에러문구는 하단에 붙히겠습니다.
main.js:258 Uncaught TypeError: Failed to execute 'drawImage' on 'CanvasRenderingContext2D': The provided value is not of type '(CSSImageValue or HTMLImageElement or SVGImageElement or HTMLVideoElement or HTMLCanvasElement or ImageBitmap or OffscreenCanvas)'
이러 한 문구가 출력이 됩니다.
(() => {
let yOffset = 0; //window.pageYOffset 대신 쓸 변수
let prevScrollHeight = 0; // 현재 스크롤 위치(yOffset)보다 이전에 위치한 스크롤 섹션들의 스크롤 높이값의 합
let currentScene = 0; // 현재 활성화된(눈 앞에 보고있는) 씬(scroll-section)
let enterNewScene = false; // 새로운 scene이 시작된 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,
imageSequence: [0, 299],
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'),
content: document.querySelector('#scroll-section-1 .description')
}
},
{
// 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')
},
values: {
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')
},
values: {
}
}
];
function setCanvasImages() {
for (let i = 0; i < sceneInfo[0].values.videoImageCount; i++) {
imgElem = new Image();
imgElem.src = `./video/001/IMG_${6726 + i}.JPG`;
sceneInfo[0].objs.videoImages.push(imgElem);
}
}
setCanvasImages()
function setLayout() {
// 각 스크롤 섹션의 높이 세팅
for (let i = 0; i < sceneInfo.length; i++) {
if (sceneInfo[i].type === 'sticky') {
sceneInfo[i].scrollHeight = sceneInfo[i].heightNum * window.innerHeight;
} else if (sceneInfo[i].type === 'normal') {
sceneInfo[i].scrollHeight = sceneInfo[i].objs.content.offsetHeight + window.innerHeight * 0.5;
}
sceneInfo[i].objs.container.style.height = `${sceneInfo[i].scrollHeight}px`;
}
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}`);
}
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);
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:
// console.log('2 play');
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:
// console.log('3 play');
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('DOMContentLoaded', setLayout);
window.addEventListener('load', setLayout);
window.addEventListener('resize', setLayout);
})();