atlas/web/_js/time.js

const timeConfig = [
    {
        timestamp: 1648822500,
        url: "./_img/place/1648822500.png",
        image: null
    },
    {
        timestamp: 1648847036,
        url: "./_img/place/1648847036.png",
        image: null
    },
    {
        timestamp: 1648870452,
        url: "./_img/place/1648870452.png",
        image: null
    },
    {
        timestamp: 1648893666,
        url: "./_img/place/1648893666.png",
        image: null
    },
    {
        timestamp: 1648917500,
        url: "./_img/place/1648917500.png",
        image: null
    },
    {
        timestamp: 1648942113,
        url: "./_img/place/1648942113.png",
        image: null
    },
    {
        timestamp: 1648956234,
        url: "./_img/place/1648956234.png",
        image: null
    },
    {
        timestamp: 1648968061,
        url: "./_img/place/1648968061.png",
        image: null
    },
    {
        timestamp: 1648979987,
        url: "./_img/place/1648979987.png",
        image: null
    },

    {
        timestamp: 1648992274,
        url: "./_img/place/1648992274.png",
        image: null
    },
    {
        timestamp: 1649012915,
        url: "./_img/place/1649012915.png",
        image: null
    },
    {
        timestamp: 1649037182,
        url: "./_img/place/1649037182.png",
        image: null
    },
    {
        timestamp: 1649060793,
        url: "./_img/place/1649060793.png",
        image: null
    },
    {
        timestamp: 1649084741,
        url: "./_img/place/1649084741.png",
        image: null
    },
    {
        timestamp: 1649113199,
        url: "./_img/place/final.png",
        image: null,
        showAtlas: true,
    },
];

let slider = document.getElementById("timeControlsSlider");
let image = document.getElementById("image");

let timeCallback = (a) => {};
let atlasBackup = [];

// SETUP
slider.max = timeConfig.length;
slider.value = timeConfig.length;
updateTime(timeConfig.length)

slider.oninput = (event) => {
    updateTime(parseInt(event.target.value))
};

async function updateTime(index) {
    let configObject = timeConfig[index-1];
    if (!configObject.image) {
        console.log("fetching");
        let fetchResult = await fetch(configObject.url);
        let imageBlob = await fetchResult.blob();
        configObject.image = URL.createObjectURL(imageBlob);
    }
    image.src = configObject.image;
    // TEMP ATLAS ONLY ON LAST TIMESTAMP
    if (configObject.showAtlas) {
        atlas = atlasBackup
    } else {
        atlas = []
    }
    timeCallback(atlas)
}