site/static/script-bon.js
Tixie 351931fdeb
All checks were successful
ci/woodpecker/push/woodpecker Pipeline was successful
ci/woodpecker/pull_request_closed/woodpecker Pipeline was successful
Ralentir les animations ASCII si la media feature prefers-reduced-motion is activée
2024-06-10 11:30:14 +02:00

47 lines
1.5 KiB
JavaScript

// dictionary to keep track of frame count for each animation
let frameCounts = {};
function animate(id, delay) {
// get the container and frames for the amination
const container = document.getElementById(id);
const frames = container.children;
// set up the frame counter
frameCounts[id] = 0;
// hide all frames except for the first
frames[0].style.display = "flex";
for (let i = 1; i < frames.length; i++) {
frames[i].style.display = "none";
}
// start the animation
const interval = setInterval(updateAnimation, delay, id, frames, frames.length);
}
function updateAnimation(id, frames, totalFrames) {
// increment the frame counter for the given id
frameCounts[id] = (frameCounts[id] + 1) % totalFrames;
// show the next frame
frames[frameCounts[id]].style.display = "flex";
// hide the previous frame
if (frameCounts[id] == 0) {
frames[totalFrames - 1].style.display = "none";
} else {
frames[frameCounts[id] - 1].style.display = "none";
}
}
// If the user have a setting on their device to minimize the amount of non-essential motion
const preferReduceMotion = window.matchMedia("(prefers-reduced-motion)").matches;
animate("illustration-accueil", preferReduceMotion ? 1500 : 500); // Reduce framerate if use preference is to reduce motion
animate("rennes", preferReduceMotion ? 3000 : 1000); // Reduce framerate if use preference is to reduce motion
animate("orsay", preferReduceMotion ? 4000 : 2000); // Reduce framerate if use preference is to reduce motion
animate("parterre", 1500);