Pixel Place Image Loader
Questo script non dovrebbe essere installato direttamente. È una libreria per altri script da includere con la chiave // @require https://update.greasyfork.org/scripts/443894/1050256/PPIL.js
// ==UserScript==
// @name PPIL
// @description Pixel Place Image Loader
// @version 1.6.2
// @author 0vC4
// @namespace https://greasyfork.org/users/670183
// @match https://pixelplace.io/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=pixelplace.io
// @license MIT
// @grant none
// @run-at document-start
// ==/UserScript==
(() => {
const PPClient = window.PPClient || {modules:{}};
window.PPClient = PPClient;
if ('ImageLoader' in PPClient.modules) return;
const progressManager = func => {
const callbacks = {};
const root = new Proxy({}, {
get(target, key) {
if (!target[key]) target[key] = callback => (callbacks[key] = callback, root);
return target[key];
}
});
root.start = (...args) => func(callbacks)(...args);
return root;
};
const worker = progressManager(({progress=()=>0, finish=()=>0}) =>
(data, func) => {
const worker = new Worker(URL.createObjectURL(new Blob([`
const progress = value => self.postMessage({progress:true,value});
const finish = value => self.postMessage({finish:true,value});
onmessage = async ({data}) => {
await (${func.toString()})(data);
close();
};
`], { type: "text/javascript" })));
worker.addEventListener('message', ({data}) => data.progress && progress(data.value));
worker.addEventListener('message', ({data}) => data.finish && finish(data.value));
worker.postMessage(data);
});
const module = {};
module.args = {};
module.config = ({colors, exclude, zero}) =>
Object.assign(module.args, {colors, exclude, zero});
module.imageToPixels = progressManager(({progress=()=>0, finish=()=>0, silent=true}) =>
(img,w,h) => {
let {width, height} = img;
if (w != null) width = w;
if (h != null) height = h;
const canvas = document.createElement('canvas');
canvas.width = width;
canvas.height = height;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0, width, height);
const rgba = ctx.getImageData(0, 0, width, height).data;
worker.progress(progress).finish(finish).start(
{rgba, width,height, silent, ...module.args},
async ({rgba, width,height, silent, colors,exclude,zero}) => {
const palette = [...colors.map(p => exclude.includes(p) ? zero : p)]
.filter(p => p != zero)
.map(clr => [(clr>>16)&0xFF, (clr>>8)&0xFF, clr&0xFF]);
const toPixel = (r, g, b) => colors.indexOf(
palette
.map(([r2, g2, b2]) => ((r2-r)**2 + (g2-g)**2 + (b2-b)**2)*0x1000000 + (r2<<16) + (g2<<8) + b2)
.sort((a,b) => a-b)[0] & 0xFFFFFF
);
const pixels = new Uint8Array(rgba.length>>2);
for (let i = 0; i < rgba.length; i += 4) {
silent || progress(i/rgba.length);
pixels[i>>2] = rgba[i+3] >= 0xAA ? toPixel(rgba[i], rgba[i+1], rgba[i+2]) : -1;
}
finish([pixels, width, height]);
});
});
module.loadImage = progressManager(({progress=()=>0, finish=()=>0, silent=true}) =>
(w, h) => {
const dropArea = document.createElement('div');
top.document.body.appendChild(dropArea);
dropArea.style = "width: calc(100% - 2em);height: calc(100% - 2em);position: fixed;left: 0px;top: 0px;background-color: rgba(0, 0, 0, 0.533);z-index: 9999;display: flex;color: white;font-size: 48pt;justify-content: center;align-items: center;border: 3px white dashed;border-radius: 18px;margin: 1em;";
dropArea.textContent = "Drop Image";
dropArea.onclick = e => dropArea.remove();
['dragenter','dragover','dragleave','drop'].forEach(eName =>
dropArea.addEventListener(eName, e => {
e.preventDefault();
e.stopPropagation();
}, false)
);
dropArea.addEventListener('drop', e => {
const reader = new FileReader();
reader.readAsDataURL(e.dataTransfer.files[0]);
reader.onload = e => {
const img = new Image;
img.src = reader.result;
img.onload = e => module.imageToPixels.silent(silent).progress(progress).finish(finish).start(img,w,h);
};
dropArea.remove();
},false);
});
PPClient.modules.ImageLoader = module;
})();
// 0vC4#7152