atlas/web/_js/draw.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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var finishButton = document.getElementById("finishButton");
var resetButton = document.getElementById("resetButton");
var undoButton = document.getElementById("undoButton");
var redoButton = document.getElementById("redoButton");
var highlightUnchartedLabel = document.getElementById("highlightUnchartedLabel");
var entryId = 0
var objectInfoBox = document.getElementById("objectInfo");
var hintText = document.getElementById("hint");
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var periodsStatus = document.getElementById('periodsStatus')
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var periodGroups = document.getElementById('periodGroups')
var periodGroupTemplate = document.getElementById('period-group').content.firstElementChild.cloneNode(true)
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var periodsAdd = document.getElementById('periodsAdd')
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var exportButton = document.getElementById("exportButton");
var cancelButton = document.getElementById("cancelButton");
var exportOverlay = document.getElementById("exportOverlay");
var exportCloseButton = document.getElementById("exportCloseButton");
var exportBackButton = document.getElementById("exportBackButton")
var path = [];
var center = [1000, 1000];
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var pathWithPeriods = []
var periodGroupElements = []
var disableDrawingOverride = false
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var drawing = true;
[...document.querySelectorAll("#drawControlsContainer textarea")].forEach(el => {
el.addEventListener("input", function() {
this.style.height = "auto";
this.style.height = (this.scrollHeight) + "px"
})
})
function initDraw(){
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wrapper.classList.remove('listHidden')
window.render = render
window.renderBackground = renderBackground
window.updateHovering = updateHovering
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// var startPeriodField = document.getElementById('startPeriodField')
// var endPeriodField = document.getElementById('endPeriodField')
// var periodVisbilityInfo = document.getElementById('periodVisbilityInfo')
var rShiftPressed = false;
var lShiftPressed = false;
var shiftPressed = false;
var highlightUncharted = true;
renderBackground();
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applyView();
container.style.cursor = "crosshair";
var undoHistory = [];
render(path);
container.addEventListener("mousedown", function(e){
lastPos = [
e.clientX,
e.clientY
];
});
function getCanvasCoords(x, y){
x = x - container.offsetLeft;
y = y - container.offsetTop;
var pos = [
~~((x - (container.clientWidth/2 - innerContainer.clientWidth/2 + zoomOrigin[0]))/zoom)+0.5,
~~((y - (container.clientHeight/2 - innerContainer.clientHeight/2 + zoomOrigin[1]))/zoom)+0.5
];
if(shiftPressed && path.length > 0){
var previous = path[path.length-1];
if(Math.abs(pos[1] - previous[1]) > Math.abs(pos[0] - previous[0]) ){
pos[0] = previous[0];
} else {
pos[1] = previous[1];
}
}
return pos;
}
container.addEventListener("mouseup", function(e){
if(Math.abs(lastPos[0] - e.clientX) + Math.abs(lastPos[1] - e.clientY) <= 4 && drawing){
var coords = getCanvasCoords(e.clientX, e.clientY);
path.push(coords);
render(path);
undoHistory = [];
redoButton.disabled = true;
undoButton.disabled = false;
if(path.length >= 3){
finishButton.disabled = false;
}
updatePath()
}
});
window.addEventListener("mousemove", function(e){
if(!dragging && drawing && path.length > 0){
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var coords = getCanvasCoords(e.clientX, e.clientY);
render(path.concat([coords]));
}
});
window.addEventListener("keyup", function(e){
if(e.key == "Enter"){
finish();
} else if(e.key == "z" && e.ctrlKey){
undo();
} else if(e.key == "y" && e.ctrlKey){
redo();
} else if(e.key == "Escape"){
exportOverlay.style.display = "none";
} else if (e.key === "Shift" ){
if(e.code === "ShiftRight"){
rShiftPressed = false;
} else if(e.code === "ShiftLeft"){
lShiftPressed = false;
}
shiftPressed = rShiftPressed || lShiftPressed;
}
});
window.addEventListener("keydown", function(e){
if (e.key === "Shift" ){
if(e.code === "ShiftRight"){
rShiftPressed = true;
} else if(e.code === "ShiftLeft"){
lShiftPressed = true;
}
shiftPressed = rShiftPressed || lShiftPressed;
}
});
finishButton.addEventListener("click", function(e){
finish();
});
undoButton.addEventListener("click", function(e){
undo();
});
redoButton.addEventListener("click", function(e){
redo();
});
resetButton.addEventListener("click", function(e){
reset();
});
cancelButton.addEventListener("click", function(e){
back();
});
document.getElementById("nameField").addEventListener("keyup", function(e){
if(e.key == "Enter"){
exportJson();
}
});
// document.getElementById("websiteField").addEventListener("keyup", function(e){
// if(e.key == "Enter"){
// exportJson();
// }
// });
// document.getElementById("subredditField").addEventListener("keyup", function(e){
// if(e.key == "Enter"){
// exportJson();
// }
// });
exportButton.addEventListener("click", function(e){
exportJson();
});
exportCloseButton.addEventListener("click", function(e){
reset();
exportOverlay.style.display = "none";
});
exportBackButton.addEventListener("click", function(e){
finish();
exportOverlay.style.display = "none";
});
document.getElementById("highlightUncharted").addEventListener("click", function(e){
highlightUncharted = this.checked;
render(path);
});
function exportJson(){
var exportObject = {
id: entryId,
name: document.getElementById("nameField").value,
description: document.getElementById("descriptionField").value,
links: {},
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center: {},
path: {},
};
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pathWithPeriodsTemp = pathWithPeriods.concat()
// console.log(pathWithPeriodsTemp)
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// calculateCenter(path)
for (let i = pathWithPeriodsTemp.length - 1; i > 0; i--) {
for (let j = 0; j < i; j++) {
if (JSON.stringify(pathWithPeriodsTemp[i][1]) === JSON.stringify(pathWithPeriodsTemp[j][1])) {
pathWithPeriodsTemp[j][0] = pathWithPeriodsTemp[i][0] + ', ' + pathWithPeriodsTemp[j][0]
pathWithPeriodsTemp.splice(i, 1)
break
}
}
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}
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pathWithPeriodsTemp.forEach(([key, value]) => {
// TODO: Compress periods on something like 0-13, 14.
exportObject.path[key] = value
exportObject.center[key] = calculateCenter(value)
})
let inputWebsite = document.getElementById("websiteField").value.split('\n').map(line => line.trim()).filter(line => line)
let inputSubreddit = document.getElementById("subredditField").value.split('\n').map(line => line.trim().replace(/^\/?r\//, '')).filter(line => line)
if (inputWebsite.length) exportObject.links.website = inputWebsite
if (inputSubreddit.length) exportObject.links.subreddit = inputSubreddit
var jsonString = JSON.stringify(exportObject, null, "\t");
var textarea = document.getElementById("exportString");
jsonString = jsonString.split("\n");
jsonString = jsonString.join("\n ");
jsonString = " "+jsonString;
textarea.value = jsonString;
var directPostUrl = "https://www.reddit.com/r/placeAtlas2/submit?selftext=true&title=New%20Submission&text="+encodeURIComponent(document.getElementById("exportString").value);
if (jsonString.length > 7493) {
directPostUrl = "https://www.reddit.com/r/placeAtlas2/submit?selftext=true&title=New%20Submission&text="+encodeURIComponent(" " + JSON.stringify(exportObject));
}
document.getElementById("exportDirectPost").href=directPostUrl;
exportOverlay.style.display = "flex";
textarea.focus();
textarea.select();
}
function undo(){
if(path.length > 0 && drawing){
undoHistory.push(path.pop());
redoButton.disabled = false;
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updatePath()
}
}
function redo(){
if(undoHistory.length > 0 && drawing){
path.push(undoHistory.pop());
undoButton.disabled = false;
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updatePath()
}
}
function finish(){
if (objectInfoBox.style.display === "block") return
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updatePath()
drawing = false;
disableDrawingOverride = true;
objectInfoBox.style.display = "block";
objectDraw.style.display = "none";
hintText.style.display = "none";
[...document.querySelectorAll("#drawControlsContainer textarea")].forEach(el => {
if (el.value) el.style.height = (el.scrollHeight) + "px"
})
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// if (isOnPeriod()) {
// periodVisbilityInfo.textContent = ""
// } else {
// periodVisbilityInfo.textContent = "Not visible during this period!"
// }
}
function reset(){
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updatePath([])
undoHistory = [];
drawing = true;
disableDrawingOverride = false;
objectInfoBox.style.display = "none";
objectDraw.style.display = "block";
hintText.style.display = "block";
document.getElementById("nameField").value = "";
document.getElementById("descriptionField").value = "";
document.getElementById("websiteField").value = "";
document.getElementById("subredditField").value = "";
}
function back(){
drawing = true;
disableDrawingOverride = false;
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updatePath()
objectInfoBox.style.display = "none";
objectDraw.style.display = "block";
hintText.style.display = "block";
}
function renderBackground(){
backgroundContext.clearRect(0, 0, canvas.width, canvas.height);
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backgroundContext.fillStyle = "rgba(0, 0, 0, 1)";
//backgroundContext.fillRect(0, 0, canvas.width, canvas.height);
for(var i = 0; i < atlas.length; i++){
var path = atlas[i].path;
backgroundContext.beginPath();
if(path[0]){
backgroundContext.moveTo(path[0][0], path[0][1]);
}
for(var p = 1; p < path.length; p++){
backgroundContext.lineTo(path[p][0], path[p][1]);
}
backgroundContext.closePath();
backgroundContext.fill();
}
}
function render(path){
context.globalCompositeOperation = "source-over";
context.clearRect(0, 0, canvas.width, canvas.height);
if(highlightUncharted){
context.drawImage(backgroundCanvas, 0, 0);
context.fillStyle = "rgba(0, 0, 0, 0.4)";
} else {
context.fillStyle = "rgba(0, 0, 0, 0.6)";
}
context.fillRect(0, 0, canvas.width, canvas.height);
context.beginPath();
if(path[0]){
context.moveTo(path[0][0], path[0][1]);
}
for(var i = 1; i < path.length; i++){
context.lineTo(path[i][0], path[i][1]);
}
context.closePath();
context.strokeStyle = "rgba(255, 255, 255, 1)";
context.stroke();
context.globalCompositeOperation = "destination-out";
context.fillStyle = "rgba(0, 0, 0, 1)";
context.fill();
}
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function updateHovering(e, tapped){
if(!dragging && (!fixed || tapped)){
var pos = [
(e.clientX - (container.clientWidth/2 - innerContainer.clientWidth/2 + zoomOrigin[0] + container.offsetLeft))/zoom
,(e.clientY - (container.clientHeight/2 - innerContainer.clientHeight/2 + zoomOrigin[1] + container.offsetTop))/zoom
];
var coords_p = document.getElementById("coords_p");
coords_p.innerText = Math.ceil(pos[0]) + ", " + Math.ceil(pos[1]);
}
}
const getEntry = id => {
const entries = atlasAll.filter(entry => entry.id === id)
if (entries.length === 1) return entries[0]
return {}
}
let params = new URLSearchParams(document.location.search)
if (params.has('id')) {
entry = getEntry(params.get('id'))
document.getElementById("nameField").value = entry.name
document.getElementById("descriptionField").value = entry.description
document.getElementById("websiteField").value = entry.links.website.join('\n')
document.getElementById("subredditField").value = entry.links.subreddit.map(sub => '/r/' + sub).join('\n')
pathWithPeriods = Object.entries(entry.path)
redoButton.disabled = true;
undoButton.disabled = false;
entryId = params.get('id')
if (typeof entry.period === "string") {
entry.period.split(', ').some(period => {
if (period.search('-') + 1) {
var [before, after] = period.split('-')
startPeriodField.value = before
endPeriodField.value = after
// console.log(before, after)
return
}
})
}
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} else {
pathWithPeriods.push([defaultPeriod, []])
}
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initPeriodGroups()
zoom = 4;
zoomOrigin = [
innerContainer.clientWidth/2 - center[0] * zoom,// + container.offsetLeft
innerContainer.clientHeight/2 - center[1] * zoom// + container.offsetTop
];
scaleZoomOrigin = [
2000/2 - center[0],// + container.offsetLeft
2000/2 - center[1]// + container.offsetTop
];
applyView();
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document.addEventListener('timeupdate', (event) => {
renderBackground()
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updatePeriodGroups()
})
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periodsAdd.addEventListener('click', () => {
pathWithPeriods.push([defaultPeriod, []])
initPeriodGroups()
})
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}
function calculateCenter(path){
var area = 0,
i,
j,
point1,
point2,
x = 0,
y = 0,
f;
for (i = 0, j = path.length - 1; i < path.length; j=i,i++) {
point1 = path[i];
point2 = path[j];
f = point1[0] * point2[1] - point2[0] * point1[1];
area += f;
x += (point1[0] + point2[0]) * f;
y += (point1[1] + point2[1]) * f;
}
area *= 3;
return [Math.floor(x / area)+0.5, Math.floor(y / area)+0.5];
}
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function isOnPeriod(start = parseInt(startPeriodField.value), end = parseInt(endPeriodField.value), current = period) {
// console.log(start, end, current, current >= start && current <= end)
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return current >= start && current <= end
}
function initPeriodGroups() {
periodGroupElements = []
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periodGroups.textContent = ''
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// console.log(pathWithPeriods)
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pathWithPeriods.forEach(([period, path], index) => {
let periodGroupEl = periodGroupTemplate.cloneNode(true)
periodGroupEl.id = "periodGroup" + index
let startPeriodEl = periodGroupEl.querySelector('.period-start')
let endPeriodEl = periodGroupEl.querySelector('.period-end')
let periodVisibilityEl = periodGroupEl.querySelector('.period-visible')
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let periodDeleteEl = periodGroupEl.querySelector('.period-delete')
let periodDuplicateEl = periodGroupEl.querySelector('.period-duplicate')
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let [start, end] = parsePeriod(period)
startPeriodEl.id = "periodStart" + index
startPeriodEl.previousSibling.for = startPeriodEl.id
endPeriodEl.id = "periodEnd" + index
endPeriodEl.previousSibling.for = endPeriodEl.id
periodVisibilityEl.id = "periodVisibility" + index
startPeriodEl.value = start
startPeriodEl.max = maxPeriod
endPeriodEl.value = end
endPeriodEl.max = maxPeriod
startPeriodEl.addEventListener('input', event => {
timelineSlider.value = parseInt(event.target.value)
updateTime(parseInt(event.target.value))
// console.log(parseInt(event.target.value))
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})
endPeriodEl.addEventListener('input', event => {
timelineSlider.value = parseInt(event.target.value)
updateTime(parseInt(event.target.value))
// console.log(parseInt(event.target.value))
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})
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periodDeleteEl.addEventListener('click', () => {
if (pathWithPeriods.length === 1) return
pathWithPeriods = pathWithPeriods.filter((_, i) => i !== index)
initPeriodGroups()
})
periodDuplicateEl.addEventListener('click', () => {
pathWithPeriods.push([pathWithPeriods[index][0], [...pathWithPeriods[index][1]]])
initPeriodGroups()
})
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periodGroups.appendChild(periodGroupEl)
periodGroupElements.push({
periodGroupEl,
startPeriodEl,
endPeriodEl,
periodVisibilityEl
})
})
// console.log(periodGroupTemplate)
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updatePeriodGroups()
}
function updatePeriodGroups() {
// console.log('updatePeriodGroups')
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var pathToActive = []
var lastActivePathIndex
var currentActivePathIndex
var currentActivePathIndexes = []
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periodGroupElements.forEach((elements, index) => {
let {
periodGroupEl,
startPeriodEl,
endPeriodEl,
periodVisibilityEl
} = elements
if (periodGroupEl.dataset.active === "true") lastActivePathIndex = index
periodGroupEl.dataset.active = ""
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if (isOnPeriod(
parseInt(startPeriodEl.value),
parseInt(endPeriodEl.value),
period
)) {
pathToActive = pathWithPeriods[index][1]
currentActivePathIndex = index
currentActivePathIndexes.push(index)
periodGroupEl.dataset.active = "true"
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}
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pathWithPeriods[index][0] = formatPeriod(
parseInt(startPeriodEl.value),
parseInt(endPeriodEl.value),
period
)
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})
// console.log('updatePeriodGroups searcher', pathToActive, lastActivePathIndex, currentActivePathIndex, period)
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periodsStatus.textContent = ""
// if (currentActivePathIndexes.length > 1) {
// periodsStatus.textContent = "Collision detected! Please resolve it."
// currentActivePathIndexes.forEach(index => {
// periodGroupElements[index].periodGroupEl.dataset.status = "error"
// })
// currentActivePathIndex = undefined
// }
// console.log(lastActivePathIndex)
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if (lastActivePathIndex !== undefined) {
if (lastActivePathIndex === currentActivePathIndex) {
// just update the path
pathWithPeriods[currentActivePathIndex] = [
formatPeriod(
parseInt(periodGroupElements[currentActivePathIndex].startPeriodEl.value),
parseInt(periodGroupElements[currentActivePathIndex].endPeriodEl.value)
),
path
]
updatePath()
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} else if (currentActivePathIndex === undefined) {
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pathWithPeriods[lastActivePathIndex][1] = path
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updatePath([])
} else {
// switch the path
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pathWithPeriods[lastActivePathIndex][1] = path
updatePath(pathToActive)
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}
} else {
console.log('direct active', pathToActive)
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updatePath(pathToActive)
}
drawing = disableDrawingOverride ? false : currentActivePathIndex !== undefined
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}
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function parsePeriod(periodString) {
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periodString = periodString + ""
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// TODO: Support for multiple/alternative types of canvas
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if (periodString.search('-') + 1) {
var [start, end] = periodString.split('-').map(i => parseInt(i))
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return [start, end]
} else {
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let periodNew = parseInt(periodString)
return [periodNew, periodNew]
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}
}
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function formatPeriod(start, end) {
if (start === end) return start
else return start + "-" + end
}
function updatePath(newPath) {
// console.log('updatePath', path, newPath)
if (newPath) path = newPath
// console.log('updatePath', path, newPath)
if (path.length > 3) center = calculateCenter(path)
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render(path)
undoButton.disabled = path.length == 0; // Maybe make it undo the cancel action in the future
undoHistory = []
updateErrors()
}
function updateErrors() {
if (path.length === 0) {
periodsStatus.textContent = "No paths available on this period!"
}
let [conflicts, invalidPaths, allErrors] = getErrors()
if (allErrors.length > 0) {
periodsStatus.textContent = `Problems detected. Please check the groups indicated by red.`
if (conflicts.length > 0) {
periodsStatus.textContent += `\nConflicts on ${conflicts.join(', ')}.`
currentActivePathIndex = undefined
}
if (invalidPaths.length > 0) periodsStatus.textContent += `\nInsufficient paths on ${invalidPaths.join(', ')}.`
allErrors.forEach(index => {
periodGroupElements[index].periodGroupEl.dataset.status = "error"
})
finishButton.disabled = true
} else {
periodsStatus.textContent = ``
finishButton.disabled = false
periodGroupElements.forEach((elements, index) => {
let {
periodGroupEl,
startPeriodEl,
endPeriodEl,
periodVisibilityEl
} = elements
if (periodGroupEl.dataset.active === "true") periodGroupEl.dataset.status = "active"
else periodGroupEl.dataset.status = ""
})
}
}
function getConflicts() {
let conflicts = new Set()
for (let i = pathWithPeriods.length - 1; i > 0; i--) {
for (let j = 0; j < i; j++) {
let [start1, end1] = parsePeriod(pathWithPeriods[i][0])
let [start2, end2] = parsePeriod(pathWithPeriods[j][0])
if (
(start2 <= start1 && start1 <= end2) ||
(start2 <= end1 && end1 <= end2) ||
(start1 <= start2 && start2 <= end1) ||
(start1 <= end2 && end2 <= end1)
) {
conflicts.add(i)
conflicts.add(j)
}
}
}
conflicts = [...conflicts]
return conflicts
}
function getErrors() {
let conflicts = getConflicts()
let invalidPaths = []
pathWithPeriods.forEach(([period, path], i) => {
if (path.length < 3) invalidPaths.push(i)
})
// console.info('conflicts', conflicts)
// console.info('invalid paths', invalidPaths)
return [conflicts, invalidPaths, [...new Set([...conflicts, ...invalidPaths])]]
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}
// function compressPeriod(periodsString) {
// let periodStrings = periodsString.split(", ")
// let validPeriods = new Set()
// periodStrings.forEach(periodString => {
// let [start, end] = parsePeriod(periodString)
// for (var i = start; i <= end; i++) {
// validPeriods.add(i)
// }
// })
// validPeriods = [...validPeriods].sort()
// }