atlas/web/_js/main.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 r/placeAtlas2 contributors
Licensed under the GNU Affero General Public License Version 3
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https://place-atlas.stefanocoding.me/license.txt
========================================================================
*/
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const prodDomain = "place-atlas.stefanocoding.me"
var innerContainer = document.getElementById("innerContainer");
var container = document.getElementById("container");
var canvas = document.getElementById("highlightCanvas");
var context = canvas.getContext("2d");
var zoom = 1;
if(window.devicePixelRatio){
zoom = 1/window.devicePixelRatio;
}
var maxZoom = 128;
var minZoom = 0.1;
var zoomOrigin = [0, 0];
var scaleZoomOrigin = [0, 0];
var dragging = false;
var lastPosition = [0, 0];
var viewportSize = [0, 0];
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document.getElementById("entriesListDonate").addEventListener("click", function(e){
document.getElementById("donateOverlay").style.display = "flex";
});
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document.getElementById("closeDonateButton").addEventListener("click", function(e){
document.getElementById("donateOverlay").style.display = "none";
});
function applyView(){
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//console.log(zoomOrigin, scaleZoomOrigin);
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//console.log(scaleZoomOrigin[0]);
scaleZoomOrigin[0] = Math.max(-1000, Math.min(1000, scaleZoomOrigin[0]));
scaleZoomOrigin[1] = Math.max(-1000, Math.min(1000, scaleZoomOrigin[1]));
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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";
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}
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var atlas = null;
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window.atlas = atlas
var atlasAll = null
window.atlasAll = atlasAll
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if (document.location.host !== prodDomain) document.body.dataset.dev = ""
init();
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async function init(){
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// For Reviewing Reddit Changes
//let resp = await fetch("../tools/temp_atlas.json");
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let resp = await fetch("./atlas.json");
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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);
updateTime(period)
//console.log(document.documentElement.clientWidth, document.documentElement.clientHeight);
zoomOrigin = [0, 0];
applyView();
var initialPinchDistance = 0;
var initialPinchZoom = 0;
var initialPinchZoomOrigin = [0, 0];
var desiredZoom;
var zoomAnimationFrame;
var mode = "view";
var args = window.location.search;
var params = new URLSearchParams(args)
if (args){
mode = params.get("mode")
if (!mode) {
mode = "view";
}
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// Backwards compatibility for old links using "search" id arg
if (params.has('id') && params.get('mode') !== 'draw') {
let id = params.get('id')
params.delete('id')
let newLocation = new URL(window.location)
newLocation.hash = id
newLocation.search = params
window.history.replaceState({}, '', newLocation)
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}
}
document.body.dataset.mode = mode
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initGlobal()
if (mode !== "draw") initViewGlobal()
if(mode === "draw"){
initDraw();
} else if(mode === "about"){
window.location = "./about.html";
} else if(mode === "overlap"){
if(initOverlap){
initOverlap();
}
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} else if(mode.startsWith("diff")){
try {
let liveResp = await fetch("https://place-atlas.stefanocoding.me/atlas.json");
let liveJson = await liveResp.json();
liveJson = updateAtlasAll(liveJson)
console.log(liveJson)
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let liveAtlasReduced = liveJson.reduce(function(a, c) {
a[c.id] = c;
return a;
},{});
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// Mark added/edited entries
atlasAll = atlasAll.map(function(entry) {
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if(liveAtlasReduced[entry.id] === undefined){
entry.diff = "add";
}else if(JSON.stringify(entry) !== JSON.stringify(liveAtlasReduced[entry.id])){
entry.diff = "edit";
}
return entry;
});
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// Mark removed entries
let atlasReduced = atlasAll.reduce(function(a, c) {
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a[c.id] = c;
return a;
},{});
let removedEntries = liveJson.filter(entry =>
atlasReduced[entry.id] === undefined
).map(entry => {
entry.diff = "delete"
return entry
})
atlasAll.push(...removedEntries)
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if(mode.includes("only")){
atlasAll = atlasAll.filter(function(entry) {
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return typeof entry.diff == "string"
});
}
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} catch (error) {
console.warn("Diff mode failed to load, reverting to normal view.", error);
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} finally {
updateTime()
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if(initOverlap && mode.includes("overlap")){
initOverlap();
} else {
initView();
}
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}
} else if(mode === "explore"){
initExplore();
} else {
initView();
}
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document.getElementById("zoomInButton").addEventListener("click", function(e){
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/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame);
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}*/
var x = container.clientWidth/2;
var y = container.clientHeight/2;
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
];
initialPinchZoom = zoom;
lastPosition = [x, y];
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zoom = zoom * 2;
zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
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applyZoom(x, y, zoom);
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});
document.getElementById("zoomOutButton").addEventListener("click", function(e){
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/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame);
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}*/
var x = container.clientWidth/2;
var y = container.clientHeight/2;
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
];
initialPinchZoom = zoom;
lastPosition = [x, y];
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zoom = zoom / 2;
zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
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applyZoom(x, y, zoom);
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});
document.getElementById("zoomResetButton").addEventListener("click", function(e){
zoom = 1;
zoomOrigin = [0, 0];
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scaleZoomOrigin = [0, 0];
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updateLines();
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applyView();
});
container.addEventListener("dblclick", function(e){
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/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame);
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}*/
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var x = e.clientX - container.offsetLeft;
var y = e.clientY - container.offsetTop;
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
];
initialPinchZoom = zoom;
lastPosition = [x, y];
if(e.ctrlKey){
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zoom = zoom / 2;
} else {
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zoom = zoom * 2;
}
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zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
applyZoom(x, y, zoom);
e.preventDefault();
});
container.addEventListener("wheel", function(e){
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/*if(zoomAnimationFrame){
window.cancelAnimationFrame(zoomAnimationFrame);
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}*/
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var x = e.clientX - container.offsetLeft;
var y = e.clientY - container.offsetTop;
initialPinchZoomOrigin = [
scaleZoomOrigin[0],
scaleZoomOrigin[1]
];
initialPinchZoom = zoom;
lastPosition = [x, y];
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// 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;
}
}
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zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
applyZoom(x, y, zoom);
e.preventDefault();
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}, {passive: true});
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/*function setDesiredZoom(x, y, target){
zoom = (zoom*2 + target)/3;
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//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);
});
}
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}*/
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);
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}, {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){
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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){
var deltaX = x - lastPosition[0];
var deltaY = y - lastPosition[1];
lastPosition = [x, y];
zoomOrigin[0] += deltaX;
zoomOrigin[1] += deltaY;
scaleZoomOrigin[0] += deltaX/zoom;
scaleZoomOrigin[1] += deltaY/zoom;
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previousZoomOrigin = [zoomOrigin[0], zoomOrigin[1]];
previousScaleZoomOrigin = [scaleZoomOrigin[0], scaleZoomOrigin[1]];
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updateLines();
applyView();
}
}
function touchmove(e){
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updateLines();
if(e.touches.length == 1){
mousemove(e.touches[0].clientX, e.touches[0].clientY);
} else if(e.touches.length == 2){
var 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;
var x = (e.touches[0].clientX + e.touches[1].clientX)/2 - container.offsetLeft;
var y = (e.touches[0].clientY + e.touches[1].clientY)/2 - container.offsetTop;
applyZoom(x, y, zoom);
}
}
function applyZoom(x, y, zoom){
var deltaX = x - lastPosition[0];
var deltaY = y - lastPosition[1];
var pinchTranslateX = (x - container.clientWidth/2 - deltaX);
var 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(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();
});
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document.body.dataset.initDone = ''
}
function updateAtlasAll(atlas) {
if (!atlas) atlas = atlasAll
for (let atlasIndex in atlas) {
if (Array.isArray(atlas[atlasIndex].path)) {
let currentPath = atlas[atlasIndex].path
atlas[atlasIndex].path = {}
atlas[atlasIndex].path[defaultPeriod] = currentPath
}
if (Array.isArray(atlas[atlasIndex].center)) {
let currentCenter = atlas[atlasIndex].center
atlas[atlasIndex].center = {}
atlas[atlasIndex].center[defaultPeriod] = currentCenter
}
if (atlas[atlasIndex].links) {
let currentLinks = atlas[atlasIndex].links
atlas[atlasIndex].links = {
website: [],
subreddit: [],
discord: [],
wiki: [],
...currentLinks
}
} else {
atlas[atlasIndex].links = {
website: [],
subreddit: [],
discord: [],
wiki: []
}
if (atlas[atlasIndex].website) atlas[atlasIndex].links.website = [atlas[atlasIndex].website]
if (atlas[atlasIndex].subreddit) atlas[atlasIndex].links.subreddit = atlas[atlasIndex].subreddit.split(',').map(subreddit => subreddit.trim().replace(/^\/r\//, ''))
delete atlas[atlasIndex].website
delete atlas[atlasIndex].subreddit
}
}
return atlas
}