atlas/web/_js/main.js

539 lines
No EOL
12 KiB
JavaScript

/*
========================================================================
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
========================================================================
*/
const prodDomain = "place-atlas.stefanocoding.me"
const innerContainer = document.getElementById("innerContainer")
const container = document.getElementById("container")
const canvas = document.getElementById("highlightCanvas")
const context = canvas.getContext("2d")
let zoom = 1
if (window.devicePixelRatio) {
zoom = 1 / window.devicePixelRatio
}
const maxZoom = 128
const minZoom = 0.1
let zoomOrigin = [0, 0]
let scaleZoomOrigin = [0, 0]
let dragging = false
let lastPosition = [0, 0]
const viewportSize = [0, 0]
function applyView() {
//console.log(zoomOrigin, scaleZoomOrigin)
//console.log(scaleZoomOrigin[0])
scaleZoomOrigin[0] = Math.max(-1000, Math.min(1000, scaleZoomOrigin[0]))
scaleZoomOrigin[1] = Math.max(-1000, Math.min(1000, scaleZoomOrigin[1]))
zoomOrigin = [scaleZoomOrigin[0] * zoom, scaleZoomOrigin[1] * zoom]
innerContainer.style.height = (~~(zoom * 2000)) + "px"
innerContainer.style.width = (~~(zoom * 2000)) + "px"
innerContainer.style.left = ~~(container.clientWidth / 2 - innerContainer.clientWidth / 2 + zoomOrigin[0] + container.offsetLeft) + "px"
innerContainer.style.top = ~~(container.clientHeight / 2 - innerContainer.clientHeight / 2 + zoomOrigin[1] + container.offsetTop) + "px"
}
let atlas = null
window.atlas = atlas
let atlasAll = null
window.atlasAll = atlasAll
if (document.location.host !== prodDomain) document.body.dataset.dev = ""
init()
async function init() {
// For Reviewing Reddit Changes
//let resp = await fetch("../tools/temp_atlas.json")
const resp = await fetch("./atlas.json")
atlas = await resp.json()
atlas.sort(function (a, b) {
if (a.center[1] < b.center[1]) {
return -1
}
if (a.center[1] > b.center[1]) {
return 1
}
// a must be equal to b
return 0
})
atlasAll = updateAtlasAll(atlas)
let mode = "view"
const args = window.location.search
const params = new URLSearchParams(args)
if (args) {
mode = params.get("mode")
if (!mode) {
mode = "view"
}
// Backwards compatibility for old links using "search" id arg
if (params.has('id') && params.get('mode') !== 'draw') {
const id = params.get('id')
params.delete('id')
const newLocation = new URL(window.location)
newLocation.hash = id
newLocation.search = params
window.history.replaceState({}, '', newLocation)
}
}
const hash = window.location.hash.substring(1)
const [, period] = hash.split('/')
if (period) {
const [, targetPeriod, targetVariation] = parsePeriod(period)
await updateTime(targetPeriod, targetVariation)
} else {
await updateTime(currentPeriod, currentVariation)
}
//console.log(document.documentElement.clientWidth, document.documentElement.clientHeight)
zoomOrigin = [0, 0]
applyView()
let initialPinchDistance = 0
let initialPinchZoom = 0
let initialPinchZoomOrigin = [0, 0]
let desiredZoom
let zoomAnimationFrame
document.body.dataset.mode = mode
initGlobal()
if (mode !== "draw") initViewGlobal()
if (mode === "draw") {
initDraw()
} else if (mode === "about") {
window.location = "./about.html"
} else if (mode === "overlap") {
if (initOverlap) {
initOverlap()
}
} else if (mode.startsWith("diff")) {
try {
const liveResp = await fetch("https://place-atlas.stefanocoding.me/atlas.json")
let liveJson = await liveResp.json()
liveJson = updateAtlasAll(liveJson)
const liveAtlasReduced = liveJson.reduce(function (a, c) {
a[c.id] = c
return a
}, {})
// Mark added/edited entries
atlasAll = atlasAll.map(function (entry) {
if (liveAtlasReduced[entry.id] === undefined) {
entry.diff = "add"
} else if (JSON.stringify(entry) !== JSON.stringify(liveAtlasReduced[entry.id])) {
entry.diff = "edit"
}
return entry
})
// Mark removed entries
const atlasReduced = atlasAll.reduce(function (a, c) {
a[c.id] = c
return a
}, {})
const removedEntries = liveJson.filter(entry =>
atlasReduced[entry.id] === undefined
).map(entry => {
entry.diff = "delete"
return entry
})
atlasAll.push(...removedEntries)
if (mode.includes("only")) {
atlasAll = atlasAll.filter(function (entry) {
return typeof entry.diff == "string"
})
}
} catch (error) {
console.warn("Diff mode failed to load, reverting to normal view.", error)
} finally {
await updateTime()
if (initOverlap && mode.includes("overlap")) {
initOverlap()
} else {
initView()
}
}
} else if (mode === "explore") {
initExplore()
} else {
initView()
}
document.getElementById("loading").classList.add("d-none")
document.getElementById("zoomInButton").addEventListener("click", function (e) {
/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame)
}*/
const x = container.clientWidth / 2
const y = container.clientHeight / 2
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
]
initialPinchZoom = zoom
lastPosition = [x, y]
zoom = zoom * 2
zoom = Math.max(minZoom, Math.min(maxZoom, zoom))
applyZoom(x, y, zoom)
})
document.getElementById("zoomOutButton").addEventListener("click", function (e) {
/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame)
}*/
const x = container.clientWidth / 2
const y = container.clientHeight / 2
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
]
initialPinchZoom = zoom
lastPosition = [x, y]
zoom = zoom / 2
zoom = Math.max(minZoom, Math.min(maxZoom, zoom))
applyZoom(x, y, zoom)
})
document.getElementById("zoomResetButton").addEventListener("click", function (e) {
zoom = 1
zoomOrigin = [0, 0]
scaleZoomOrigin = [0, 0]
updateLines()
applyView()
})
container.addEventListener("dblclick", function (e) {
/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame)
}*/
const x = e.clientX - container.offsetLeft
const y = e.clientY - container.offsetTop
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
]
initialPinchZoom = zoom
lastPosition = [x, y]
if (e.ctrlKey) {
zoom = zoom / 2
} else {
zoom = zoom * 2
}
zoom = Math.max(minZoom, Math.min(maxZoom, zoom))
applyZoom(x, y, zoom)
e.preventDefault()
})
container.addEventListener("wheel", function (e) {
/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame)
}*/
const x = e.clientX - container.offsetLeft
const y = e.clientY - container.offsetTop
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
]
initialPinchZoom = zoom
lastPosition = [x, y]
// Check if we are zooming by pixels
// https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent/deltaMode
if (e.deltaMode === 0) {
// Scale the pixel delta by the current zoom factor
// We want to zoom faster when closer, and slower when further
// This creates a smoother experience
zoom -= e.deltaY * (0.001 * zoom)
} else {
if (e.deltaY > 0) {
zoom = zoom / 2
} else if (e.deltaY < 0) {
zoom = zoom * 2
}
}
zoom = Math.max(minZoom, Math.min(maxZoom, zoom))
applyZoom(x, y, zoom)
}, { passive: true })
/*function setDesiredZoom(x, y, target){
zoom = (zoom*2 + target)/3
//console.log(zoom)
if(Math.abs(1 - zoom/target) <= 0.01){
zoom = target
}
applyZoom(x, y, zoom)
if(zoom != target){
zoomAnimationFrame = window.requestAnimationFrame(function(){
setDesiredZoom(x, y, target)
})
}
}*/
container.addEventListener("mousedown", function (e) {
mousedown(e.clientX, e.clientY)
e.preventDefault()
})
container.addEventListener("touchstart", function (e) {
if (e.touches.length == 2) {
e.preventDefault()
}
touchstart(e)
}, { passive: true })
function mousedown(x, y) {
lastPosition = [x, y]
dragging = true
}
function touchstart(e) {
if (e.touches.length == 1) {
mousedown(e.touches[0].clientX, e.touches[0].clientY)
} else if (e.touches.length == 2) {
initialPinchDistance = Math.sqrt(
Math.pow(e.touches[0].clientX - e.touches[1].clientX, 2)
+ Math.pow(e.touches[0].clientY - e.touches[1].clientY, 2)
)
initialPinchZoom = zoom
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
]
mousedown(
(e.touches[0].clientX + e.touches[1].clientX) / 2,
(e.touches[0].clientY + e.touches[1].clientY) / 2
)
}
}
window.addEventListener("mousemove", function (e) {
updateLines()
mousemove(e.clientX, e.clientY)
if (dragging) {
e.preventDefault()
}
})
window.addEventListener("touchmove", function (e) {
if (e.touches.length == 2 || e.scale > 1) {
e.preventDefault()
}
touchmove(e)
},
{ passive: false }
)
function mousemove(x, y) {
if (dragging) {
container.style.cursor = "move"
const deltaX = x - lastPosition[0]
const deltaY = y - lastPosition[1]
lastPosition = [x, y]
zoomOrigin[0] += deltaX
zoomOrigin[1] += deltaY
scaleZoomOrigin[0] += deltaX / zoom
scaleZoomOrigin[1] += deltaY / zoom
previousZoomOrigin = [zoomOrigin[0], zoomOrigin[1]]
previousScaleZoomOrigin = [scaleZoomOrigin[0], scaleZoomOrigin[1]]
updateLines()
applyView()
}
}
function touchmove(e) {
updateLines()
if (e.touches.length == 1) {
mousemove(e.touches[0].clientX, e.touches[0].clientY)
} else if (e.touches.length == 2) {
const newPinchDistance = Math.sqrt(
Math.pow(e.touches[0].clientX - e.touches[1].clientX, 2)
+ Math.pow(e.touches[0].clientY - e.touches[1].clientY, 2)
)
zoom = initialPinchZoom * newPinchDistance / initialPinchDistance
const x = (e.touches[0].clientX + e.touches[1].clientX) / 2 - container.offsetLeft
const y = (e.touches[0].clientY + e.touches[1].clientY) / 2 - container.offsetTop
applyZoom(x, y, zoom)
}
}
function applyZoom(x, y, zoom) {
const deltaX = x - lastPosition[0]
const deltaY = y - lastPosition[1]
const pinchTranslateX = (x - container.clientWidth / 2 - deltaX)
const pinchTranslateY = (y - container.clientHeight / 2 - deltaY)
scaleZoomOrigin[0] = initialPinchZoomOrigin[0] + deltaX / zoom + pinchTranslateX / zoom - pinchTranslateX / initialPinchZoom
scaleZoomOrigin[1] = initialPinchZoomOrigin[1] + deltaY / zoom + pinchTranslateY / zoom - pinchTranslateY / initialPinchZoom
zoomOrigin[0] = scaleZoomOrigin[0] * zoom
zoomOrigin[1] = scaleZoomOrigin[1] * zoom
applyView()
updateLines()
}
window.addEventListener("mouseup", function (e) {
if (hovered.length > 0) {
container.style.cursor = "pointer"
} else if (drawing == true) {
container.style.cursor = "crosshair"
} else {
container.style.cursor = "default"
}
if (dragging) {
e.preventDefault()
}
mouseup(e.clientX, e.clientY)
})
window.addEventListener("touchend", touchend)
function mouseup(x, y) {
if (dragging) {
dragging = false
}
}
function touchend(e) {
if (e.touches.length == 0) {
mouseup()
} else if (e.touches.length == 1) {
initialPinchZoom = zoom
lastPosition = [e.touches[0].clientX, e.touches[0].clientY]
}
}
window.addEventListener("resize", function () {
//console.log(document.documentElement.clientWidth, document.documentElement.clientHeight)
applyView()
})
document.body.dataset.initDone = ''
}
function updateAtlasAll(atlas = atlasAll) {
for (const atlasIndex in atlas) {
const currentLinks = atlas[atlasIndex].links
atlas[atlasIndex].links = {
website: [],
subreddit: [],
discord: [],
wiki: [],
...currentLinks
}
const currentPath = atlas[atlasIndex].path
const currentCenter = atlas[atlasIndex].center
for (const key in currentPath) {
currentPath[key] = currentPath[key].map(point => point.map(int => int + 0.5))
}
for (const key in currentCenter) {
currentCenter[key] = currentCenter[key].map(int => int + 0.5)
}
atlas[atlasIndex].path = currentPath
atlas[atlasIndex].center = currentCenter
}
return atlas
}