Allows you to draw images by uploading and then clicking. MAKE SURE YOUR IMAGES ARE LESS THAN 100x100px
当前为
// ==UserScript==
// @name pixely.cf tools
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Allows you to draw images by uploading and then clicking. MAKE SURE YOUR IMAGES ARE LESS THAN 100x100px
// @author theusaf
// @match http://pixely.cf/
// @grant none
// ==/UserScript==
window.finalInfo = [];
window.si = 0;
window.isPlacingImage = false;
var di = document.createElement('div');
di.style.background = 'white';
di.style.display = 'none';
di.style.top = "0px";
di.style.position = "fixed";
var im = new Image();
im.crossOrigin = "Anonymous";
var ca = document.createElement('canvas');
ca.style.display = 'none';
var fi = document.createElement('input');
fi.type = 'file';
di.style.float = 'left';
var ct = ca.getContext('2d');
document.body.addEventListener('keydown',toggleFile);
function toggleFile(evt){
if(evt.keyCode == 16){
evt.preventDefault();
di.style.display = di.style.display == "block" ? "none" : "block";
}
}
fi.onchange = function(e){
if(!e){
return;
}
var reader = new FileReader();
reader.onload = function(e){
im.src = e.target.result;
}
reader.readAsDataURL(e.target.files[0]);
}
im.onload = function(){
console.log('loaded');
if(im.height > 100 || im.width > 100){
alert('Image is too big');
return;
}
if(im.src.length > 0){
//change canvas width and height.
ca.width = im.width;
ca.height = im.height;
ct.drawImage(im,0,0);
let data = ct.getImageData(0,0,im.width,im.height).data;
let bestColor = 0;
let bestPercent = 0;
finalInfo = [];
let x = 0;
let y = 0;
let maxX = im.width;
for(let i = 0; i < data.length; i+=4){
//loop through colors
/*global colors*/
if(x == maxX){
console.log("x has hit max: " + maxX);
y++;
x = 0;
}
for(let j in colors){
if(hcd(colors[j],rth(data[i],data[Number(i)+1],data[Number(i)+2])) > bestPercent){
bestPercent = hcd(colors[j],rth(data[i],data[Number(i)+1],data[Number(i)+2]));
bestColor = j;
}
}
//if alpha is less than 40, dont push.
if(data[Number(i)+3] <= 40){
x++;
bestPercent = 0;
bestColor = 0;
continue;
}
//now that best color has been set, add to a thingy.
finalInfo.push({
x: x,
y: y,
c: Number(bestColor)
});
x++;
bestPercent = 0;
bestColor = 0;
}
isPlacingImage = true;
si = 0;
console.log(finalInfo);
}
}
/*global canvas*/
/*global getMousePos*/
/*global isPlacingImage*/
/*global finalInfo*/
/*global si*/
canvas.addEventListener('click',function(e){
console.log('click!')
let x = Math.floor(getMousePos(canvas,e).x);
let y = Math.floor(getMousePos(canvas,e).y);
if(isPlacingImage){
console.log('placing image');
isPlacingImage = false;
di.style.display = "none";
//start interval
/*global io*/
/*global SCALE*/
var sketch = setInterval(function(){
if(finalInfo.length == 0){
clearInterval(sketch);
return;
}
if(si >= finalInfo.length){
clearInterval(sketch);
console.log("done");
return;
}
if(finalInfo[si].x + (x/SCALE) >= 500 || finalInfo[si].y + (y/SCALE) >= 500){
si++;
console.log('hit canvas limit');
return;
}
console.log('drawing');
//adding listener to skip over useless stuff..
/*global pixels*/
let ok = false;
while(!ok){
if(pixels[finalInfo[si].y + Math.floor(y/SCALE)][finalInfo[si].x + Math.floor(x/SCALE)] == finalInfo[si].c){
si++;
continue;
}
ok = true;
}
io.emit('set',{x:finalInfo[si].x + Math.floor(x/SCALE),y:finalInfo[si].y + Math.floor(y/SCALE),c:finalInfo[si].c});
si++;
},300);
}
});
function hcd(hex1, hex2) {
hex1 = hex1.split("#").length == 1 ? hex1 : hex1.split("#")[1];
hex2 = hex2.split("#").length == 1 ? hex2 : hex2.split("#")[1];
// get red/green/blue int values of hex1
var r1 = parseInt(hex1.substring(0, 2), 16);
var g1 = parseInt(hex1.substring(2, 4), 16);
var b1 = parseInt(hex1.substring(4, 6), 16);
// get red/green/blue int values of hex2
var r2 = parseInt(hex2.substring(0, 2), 16);
var g2 = parseInt(hex2.substring(2, 4), 16);
var b2 = parseInt(hex2.substring(4, 6), 16);
// calculate differences between reds, greens and blues
var r = 255 - Math.abs(r1 - r2);
var g = 255 - Math.abs(g1 - g2);
var b = 255 - Math.abs(b1 - b2);
// limit differences between 0 and 1
r /= 255;
g /= 255;
b /= 255;
// 0 means opposit colors, 1 means same colors
return (r + g + b) / 3;
}
function rth(r, g, b) {
return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
function componentToHex(c) {
var hex = c.toString(16);
return hex.length == 1 ? "0" + hex : hex;
}
di.append(fi);
di.append(ca);
document.body.append(di);
//add slider for zoom
let sli = document.createElement('input');
sli.type = 'range';
sli.min = 1;
sli.max = 20;
sli.value = 10;
sli.step = 1;
let fdiv = document.getElementById('colorpicker');
fdiv.append(sli);
/*global draw*/
sli.oninput = function(){
let DIMS = [pixels[0].length, pixels.length];
SCALE = sli.value;
canvas.width = SCALE * DIMS[0];
canvas.height = SCALE * DIMS[1];
draw(pixels);
}