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[fix] 화면 길이 변경되어도 비디오 타임라인 정상 작동 #126

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merged 1 commit into from
Aug 21, 2024
Merged

[fix] 화면 길이 변경되어도 비디오 타임라인 정상 작동 #126

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38 changes: 22 additions & 16 deletions src/mainPage/features/introSection/index.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -8,10 +8,12 @@ import SpinningCarVideo from "./car-spin.webm";
import Pointer from "./pointer.svg";

function IntroSection() {
const VIDEO_LENGTH = 2;
const videoRef = useRef(null);
const introRef = useRef(null);
const carYPosition = useRef({ top: 0, bottom: 10 });
const frameRef = useRef(null);
const [isTimerVisible, setIsTimerVisible] = useState(false);
const [videoTimeline, setVideoTimeline] = useState(0);

const titleOpacity = useScrollTransition({
scrollStart: 0,
Expand All @@ -20,12 +22,18 @@ function IntroSection() {
valueEnd: 0,
});

const videoTimeline = useScrollTransition({
scrollStart: carYPosition.current.top,
scrollEnd: carYPosition.current.bottom,
valueStart: 0,
valueEnd: 2,
});
function calculateTimeline() {
const frameDOM = frameRef.current;
if (frameDOM) {
const videoHeight = frameDOM.offsetHeight;
const videoTop = frameDOM.getBoundingClientRect().top + window.scrollY;
const startScroll = videoTop + videoHeight / 2 - window.innerHeight;
const endScroll = startScroll + window.innerHeight;
const timeline = ((window.scrollY - startScroll) / (endScroll - startScroll)) * VIDEO_LENGTH;

setVideoTimeline(timeline);
}
}

useEffect(() => {
const introDOM = introRef.current;
Expand All @@ -51,14 +59,12 @@ function IntroSection() {
}, []);

useEffect(() => {
const videoDOM = videoRef.current;
if (videoDOM) {
const rect = videoDOM.getBoundingClientRect();
carYPosition.current = {
top: rect.top + rect.height * 0.5 - window.innerHeight,
bottom: rect.top + rect.height * 0.5,
};
}
window.addEventListener("scroll", calculateTimeline);
window.addEventListener("resize", calculateTimeline);
return () => {
window.removeEventListener("scroll", calculateTimeline);
window.removeEventListener("resize", calculateTimeline);
};
}, []);

useEffect(() => {
Expand All @@ -85,7 +91,7 @@ function IntroSection() {
</div>

<div className="relative mt-[800px] flex flex-col items-center">
<div className="overflow-hidden">
<div ref={frameRef} className="overflow-hidden">
<video
src={SpinningCarVideo}
ref={videoRef}
Expand Down