Użytkownik:Michał56/monobook.js: Różnice pomiędzy wersjami
Z Nonsensopedii, polskiej encyklopedii humoru
M Znacznik: edytor źródłowy |
M (.) Znacznik: edytor źródłowy |
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| (Nie pokazano 5 pośrednich wersji utworzonych przez tego samego użytkownika) | |||
| Linia 1: | Linia 1: | ||
// |
//... |
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// KOD NA ŚNIEG |
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(function() { |
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'use strict'; |
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var NUM_FLAKES = 40; |
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var flakes, Flake, PI_2, canvas, context, drawCircle, i, range, resizeWindow, xpos; |
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PI_2 = 2 * Math.PI; |
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canvas = $('<canvas style="z-index: 500; pointer-events: none; position: fixed; top: 0; left: 0;" id="snieg"></canvas>').appendTo("body")[0]; |
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context = canvas.getContext("2d"); |
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window.w = 0; |
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window.h = 0; |
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resizeWindow = function() { |
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window.w = canvas.width = window.innerWidth; |
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return (window.h = canvas.height = window.innerHeight); |
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}; |
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window.addEventListener('resize', resizeWindow, false); |
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$(function() {return setTimeout(resizeWindow, 0);}); |
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range = function(a, b) {return (b - a) * Math.random() + a;}; |
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drawCircle = function(x, y, r) { |
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context.beginPath(); |
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context.arc(x, y, r, 0, PI_2, false); |
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context.fill(); |
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context.stroke(); |
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}; |
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xpos = 0.5; |
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document.onmousemove = function(e) {return (xpos = e.pageX / w);}; |
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window.requestAnimationFrame = (function() { |
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return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) { |
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return window.setTimeout(callback, 1000 / 60); |
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}; |
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})(); |
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Flake = (function() { |
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function Flake() { |
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this.r = ~~range(4, 8); |
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this.r2 = 2 * this.r; |
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this.replace(); |
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} |
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Flake.prototype.replace = function() { |
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this.x = range(-this.r2, w - this.r2); |
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this.y = range(-20, h - this.r2); |
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this.xmax = w - this.r; |
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this.ymax = h - this.r; |
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this.vx = range(0, 2) + 8 * xpos - 5; |
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this.vy = 0.7 * this.r + range(-1, 1); |
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}; |
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Flake.prototype.draw = function() { |
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var f; |
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this.x += this.vx; |
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this.y += this.vy; |
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if (this.y > this.ymax) { |
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this.replace(); |
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} |
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if (!((0 < (f = this.x) && f < this.xmax))) { |
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this.x = (this.x + this.xmax) % this.xmax; |
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} |
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drawCircle(~~this.x, ~~this.y, this.r); |
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}; |
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return Flake; |
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})(); |
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flakes = (function() { |
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var i, a = []; |
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for (i = 0; i < NUM_FLAKES; i++) |
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a.push(new Flake()); |
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return a; |
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})(); |
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window.step = function() { |
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var i, len; |
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requestAnimationFrame(step); |
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context.clearRect(0, 0, w, h); |
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context.fillStyle = "rgba(255,255,255,1)"; |
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context.lineWidth = 2; |
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context.strokeStyle = "rgba(0,0,0,0.25)"; |
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for (i = 0, len = flakes.length; i < len; i++) |
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flakes[i].draw(); |
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}; |
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step(); |
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console.log("Załadowano śnieg"); |
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})(); |
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