atlas/web/_js/time.js

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/*
========================================================================
The 2022 /r/place Atlas
An Atlas of Reddit's 2022 /r/place, with information to each
artwork of the canvas provided by the community.
Copyright (c) 2017 Roland Rytz <roland@draemm.li>
Copyright (c) 2022 Place Atlas contributors
Licensed under the GNU Affero General Public License Version 3
https://place-atlas.stefanocoding.me/license.txt
========================================================================
*/
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const variationsConfig = {
default: {
name: "r/place",
code: "",
default: 164,
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versions: [{ "timestamp": 1648818000, "url": ["./_img/canvas/place30ex/start.png"] }, { "timestamp": 1648819800, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/000_005.png"] }, { "timestamp": 1648821600, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/001_005.png"] }, { "timestamp": 1648823400, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/002_005.png"] }, { "timestamp": 1648825200, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/003_005.png"] }, { "timestamp": 1648827000, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/004_005.png"] }, { "timestamp": 1648828800, "url": "./_img/canvas/place30/005.png" }, { "timestamp": 1648830600, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/006_005.png"] }, { "timestamp": 1648832400, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/007_005.png"] }, { "timestamp": 1648834200, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/008_005.png"] }, { "timestamp": 1648836000, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/009_005.png"] }, { "timestamp": 1648837800, "url": ["./_img/canvas/place30/005.png", "./_img/canvas/place30/010_005.png"] }, { "timestamp": 1648839600, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/011_016.png"] }, { "timestamp": 1648841400, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/012_016.png"] }, { "timestamp": 1648843200, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/013_016.png"] }, { "timestamp": 1648845000, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/014_016.png"] }, { "timestamp": 1648846800, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/015_016.png"] }, { "timestamp": 1648848600, "url": "./_img/canvas/place30/016.png" }, { "timestamp": 1648850400, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/017_016.png"] }, { "timestamp": 1648852200, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/018_016.png"] }, { "timestamp": 1648854000, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/019_016.png"] }, { "timestamp": 1648855800, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/020_016.png"] }, { "timestamp": 1648857600, "url": ["./_img/canvas/place30/016.png", "./_img/canvas/place30/021_016.png"] }, { "timestamp": 1648859400, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/022_027.png"] }, { "timestamp": 1648861200, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/023_027.png"] }, { "timestamp": 1648863000, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/024_027.png"] }, { "timestamp": 1648864800, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/025_027.png"] }, { "timestamp": 1648866600, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/026_027.png"] }, { "timestamp": 1648868400, "url": "./_img/canvas/place30/027.png" }, { "timestamp": 1648870200, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/028_027.png"] }, { "timestamp": 1648872000, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/029_027.png"] }, { "timestamp": 1648873800, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/030_027.png"] }, { "timestamp": 1648875600, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/031_027.png"] }, { "timestamp": 1648877400, "url": ["./_img/canvas/place30/027.png", "./_img/canvas/place30/032_027.png"] }, { "timestamp": 1648879200, "url": ["./_img/canvas/place30/038.png", "./_img/canvas/place30/033_038.png"] }, { "timestamp": 1648881000, "url": ["./_img/canvas/place30/038.png", "./_img/canvas/place30/034_038.png"] }, { "timestamp": 1648882800, "url": ["./_img/canvas/place30/038.png", "./_img/canvas/place30/035_038.png"] }, { "timestamp": 1648884600, "url": ["./_img/canvas/place30/038.png", "./_img/canvas/place30/036_038.png"] }, { "timestamp": 1648886400, "url": ["./_img/canvas/place30/038.png", "./_img/canvas/place30/037_038.png"] }, { "timestamp": 16488
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},
tfc: {
name: "The Final Clean",
code: "T",
default: 0,
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versions: [
{
timestamp: "Final",
url: "./_img/canvas/tfc/final.png",
},
]
}
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}
const codeReference = {}
const imageCache = {}
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const variantsEl = document.getElementById("variants")
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for (const variation in variationsConfig) {
codeReference[variationsConfig[variation].code] = variation
const optionEl = document.createElement('option')
optionEl.value = variation
optionEl.textContent = variationsConfig[variation].name
variantsEl.appendChild(optionEl)
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}
const timelineSlider = document.getElementById("timeControlsSlider");
const tooltip = document.getElementById("timeControlsTooltip")
const image = document.getElementById("image");
let abortController = new AbortController()
let currentUpdateIndex = 0
let updateTimeout = setTimeout(null, 0)
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let currentVariation = "default"
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const defaultPeriod = variationsConfig[currentVariation].default
let currentPeriod = defaultPeriod
window.currentPeriod = currentPeriod
window.currentVariation = currentVariation
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// SETUP
timelineSlider.max = variationsConfig[currentVariation].versions.length - 1;
timelineSlider.value = currentPeriod;
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timelineSlider.addEventListener("input", (event) => {
updateTooltip(parseInt(event.target.value), currentVariation)
clearTimeout(updateTimeout)
updateTimeout = setTimeout(() => {
updateTime(parseInt(timelineSlider.value), currentVariation)
setTimeout(() => {
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if (timelineSlider.value != currentPeriod && abortController.signal.aborted) {
updateTime(parseInt(timelineSlider.value), currentVariation)
}
}, 50)
}, 25)
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})
variantsEl.addEventListener("input", (event) => {
updateTime(currentPeriod, event.target.value)
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})
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const dispatchTimeUpdateEvent = (period = timelineSlider.value, atlas = atlas) => {
const timeUpdateEvent = new CustomEvent('timeupdate', {
detail: {
period: period,
atlas: atlas
}
});
document.dispatchEvent(timeUpdateEvent);
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}
async function updateBackground(newPeriod = currentPeriod, newVariation = currentVariation) {
abortController.abort()
abortController = new AbortController()
currentUpdateIndex++
const myUpdateIndex = currentUpdateIndex
currentPeriod = newPeriod
const variationConfig = variationsConfig[newVariation]
if (currentVariation !== newVariation) {
currentVariation = newVariation
timelineSlider.max = variationConfig.versions.length - 1;
currentPeriod = variationConfig.default;
newPeriod = currentPeriod
if (variationConfig.versions.length === 1) timelineSlider.parentElement.classList.add('no-time-slider')
else timelineSlider.parentElement.classList.remove('no-time-slider')
}
timelineSlider.value = currentPeriod
variantsEl.value = currentVariation
const configObject = variationConfig.versions[currentPeriod];
if (typeof configObject.url === "string") {
if (imageCache[configObject.url] === undefined) {
const fetchResult = await fetch(configObject.url, {
signal: abortController.signal
});
if (currentUpdateIndex !== myUpdateIndex) {
return [configObject, newPeriod, newVariation]
}
const imageBlob = await fetchResult.blob()
imageCache[configObject.url] = URL.createObjectURL(imageBlob)
}
image.src = imageCache[configObject.url]
} else {
const canvas = document.createElement('canvas')
const context = canvas.getContext('2d')
context.canvas.width = 2000
context.canvas.height = 2000
await Promise.all(configObject.url.map(async url => {
if (imageCache[url] === undefined) {
const fetchResult = await fetch(url, {
signal: abortController.signal
});
if (currentUpdateIndex !== myUpdateIndex) {
return
}
const imageBlob = await fetchResult.blob()
imageCache[url] = URL.createObjectURL(imageBlob)
}
}))
for await (const url of configObject.url) {
const imageLayer = new Image()
await new Promise(resolve => {
imageLayer.onload = () => {
context.drawImage(imageLayer, 0, 0)
resolve()
}
imageLayer.src = imageCache[url]
})
}
if (currentUpdateIndex !== myUpdateIndex) return [configObject, newPeriod, newVariation]
const blob = await new Promise(resolve => canvas.toBlob(resolve))
image.src = URL.createObjectURL(blob)
}
return [configObject, newPeriod, newVariation]
}
async function updateTime(newPeriod = currentPeriod, newVariation = currentVariation) {
document.body.dataset.canvasLoading = true
let configObject
[configObject, newPeriod, newVariation] = await updateBackground(newPeriod, newVariation)
atlas = []
for (const atlasIndex in atlasAll) {
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let chosenIndex
const validPeriods2 = Object.keys(atlasAll[atlasIndex].path)
for (const i in validPeriods2) {
const validPeriods = validPeriods2[i].split(', ')
for (const j in validPeriods) {
const [start, end, variation] = parsePeriod(validPeriods[j])
if (isOnPeriod(start, end, variation, newPeriod, newVariation)) {
chosenIndex = i
break
}
}
if (chosenIndex !== undefined) break
}
if (chosenIndex === undefined) continue
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const pathChosen = Object.values(atlasAll[atlasIndex].path)[chosenIndex]
const centerChosen = Object.values(atlasAll[atlasIndex].center)[chosenIndex]
if (pathChosen === undefined) continue
atlas.push({
...atlasAll[atlasIndex],
path: pathChosen,
center: centerChosen,
})
}
dispatchTimeUpdateEvent(newPeriod, atlas)
document.body.dataset.canvasLoading = false
}
function updateTooltip(newPeriod, newVariation) {
const configObject = variationsConfig[newVariation].versions[newPeriod]
if (typeof configObject.timestamp === "number") tooltip.querySelector('p').textContent = new Date(configObject.timestamp * 1000).toUTCString()
else tooltip.querySelector('p').textContent = configObject.timestamp
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if (timelineSlider.max === 1) {
tooltip.style.left = (0 - tooltip.offsetWidth/2) + "px"
} else {
tooltip.style.left = (((timelineSlider.offsetWidth)*(timelineSlider.value)/(timelineSlider.max)) - tooltip.offsetWidth/2) + "px"
}
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}
tooltip.parentElement.addEventListener('mouseenter', () => updateTooltip(parseInt(timelineSlider.value), currentVariation))
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window.addEventListener('resize', () => updateTooltip(parseInt(timelineSlider.value), currentVariation))
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function isOnPeriod(start, end, variation, currentPeriod, currentVariation) {
return currentPeriod >= start && currentPeriod <= end && variation === currentVariation
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}
function parsePeriod(periodString) {
let variation = "default"
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periodString = periodString + ""
if (periodString.split(':').length > 1) {
const split = periodString.split(':')
variation = codeReference[split[0]]
periodString = split[1]
}
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if (periodString.search('-') + 1) {
const [start, end] = periodString.split('-').map(i => parseInt(i))
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return [start, end, variation]
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} else {
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const periodNew = parseInt(periodString)
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return [periodNew, periodNew, variation]
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}
}