atlas/web/_js/main/overlap.js
Hans5958 07ffc41fa4 Shorten the license text
Nearly nobody bat an eye on this one (better check the LICENSE file on GitHub), also now make it so it doesn't get removed when minified
2023-03-26 15:16:05 +07:00

74 lines
1.7 KiB
JavaScript

/*!
* The 2022 r/place Atlas
* Copyright (c) 2017 Roland Rytz <roland@draemm.li>
* Copyright (c) 2022 Place Atlas contributors
* Licensed under AGPL-3.0 (https://place-atlas.stefanocoding.me/license.txt)
*/
function initOverlap() {
window.renderBackground = renderBackground
// const hovered = []
buildObjectsList(null, null)
renderBackground(atlas)
render()
document.addEventListener('timeupdate', (event) => {
sortedAtlas = atlas.concat()
resetEntriesList(null, null)
renderBackground(sortedAtlas)
render()
})
applyView()
render()
updateLines()
if (window.location.hash) {
highlightEntryFromUrl()
}
function renderBackground(atlas) {
backgroundContext.clearRect(0, 0, canvas.width, canvas.height)
backgroundContext.fillStyle = "rgba(255, 255, 255, 1)"
backgroundContext.fillRect(0, 0, canvas.width, canvas.height)
for (let i = 0; i < atlas.length; i++) {
const path = atlas[i].path
backgroundContext.beginPath()
if (path[0]) {
backgroundContext.moveTo(path[0][0], path[0][1])
}
for (let p = 1; p < path.length; p++) {
backgroundContext.lineTo(path[p][0], path[p][1])
}
backgroundContext.closePath()
backgroundContext.fillStyle = "rgba(0, 0, 255, 0.2)"
backgroundContext.fill()
}
const pixels = backgroundContext.getImageData(0, 0, backgroundCanvas.width, backgroundCanvas.height).data
let blank = 0
for (let i = 0; i < pixels.length; i += 4) {
if (pixels[i] === 255) {
blank++
}
}
const blankPercentage = (blank / (canvasSize.x * canvasSize.y)) * 100
console.info(blank + " blank pixels, which are " + blankPercentage.toPrecision(4) + "% of the canvas (" + (100 - blankPercentage).toPrecision(4) + "% mapped)")
}
}