pixelnode/public/main.js
2018-04-03 12:48:19 +02:00

45 lines
1014 B
JavaScript

'use strict';
(function() {
var socket = io();
var canvas = document.getElementsByClassName('display')[0];
var context = canvas.getContext('2d');
socket.on('draw', onDraw);
window.addEventListener('resize', onResize, false);
onResize();
function drawLine(x0, y0, x1, y1, color){
context.beginPath();
context.moveTo(x0, y0);
context.lineTo(x1, y1);
context.strokeStyle = color;
context.lineWidth = 2;
context.stroke();
context.closePath();
}
function drawPixel(x, y, color){
context.fillStyle = '#' + color;
context.fillRect(x - (canvas.width * 0.005),y - (canvas.height * 0.005), canvas.width * 0.01, canvas.height * 0.01);
}
function onDraw(data){
var w = canvas.width;
var h = canvas.height;
if (data.type == 'pixel') {
drawPixel(data.x * w, data.y * h, data.color);
}
}
// make the canvas fill its parent
function onResize() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
})();