1// JavaScript Document 2(function ($) { 3 //for html5 canvas; 4 var $window = window, 5 $timeout = setTimeout; 6 7 var supportCanvas = function () { 8 var eCan = document.createElement("canvas"); 9 return (typeof eCan.getContext) == "function"; 10 }; 11 window.Snow = function (element, settings) { 12 (function () { 13 var lastTime = 0; 14 var vendors = ['webkit', 'moz']; 15 for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { 16 window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame']; 17 window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] || // name has changed in Webkit 18 window[vendors[x] + 'CancelRequestAnimationFrame']; 19 } 20 21 if (!window.requestAnimationFrame) { 22 window.requestAnimationFrame = function (callback, element) { 23 /* 24 var currTime = new Date().getTime(); 25 var timeToCall = Math.max(0, 16.7 - (currTime - lastTime)); 26 var id = window.setTimeout(function () { 27 callback(currTime + timeToCall); 28 }, timeToCall); 29 lastTime = currTime + timeToCall; 30 */ 31 var timeToCall = 14; //freezes in safari for windows ,and mac to , so i change time to call with 14; 32 var id = window.setTimeout(function () { 33 callback(timeToCall); 34 }, timeToCall); 35 36 return id; 37 }; 38 } 39 if (!window.cancelAnimationFrame) { 40 window.cancelAnimationFrame = function (id) { 41 clearTimeout(id); 42 }; 43 } 44 }()); 45 this.settings = settings, 46 this.flakes = [], 47 this.flakeCount = settings.count, 48 this.mx = -100, 49 this.my = -100, 50 this.init(element) 51 }; 52 Snow.prototype.init = function (element) { 53 this.canvas = element.get(0), this.ctx = this.canvas.getContext("2d"), this.canvas.width = $window.innerWidth, this.canvas.height = $window.innerHeight, this.flakes = []; 54 for (var i = 0; i < this.flakeCount; i++) { 55 var x = Math.floor(Math.random() * this.canvas.width), 56 y = Math.floor(Math.random() * this.canvas.height), 57 size = Math.floor(100 * Math.random()) % this.settings.size + 2, 58 speed = Math.floor(100 * Math.random()) % this.settings.speed + Math.random() * size / 10 + .5, 59 opacity = .5 * Math.random() + this.settings.opacity; 60 this.flakes.push({ 61 speed: speed, 62 velY: speed, 63 velX: 0, 64 x: x, 65 y: y, 66 size: size, 67 stepSize: Math.random() / 30, 68 step: 0, 69 angle: 180, 70 opacity: opacity 71 }) 72 } 73 1 == this.settings.interaction && this.canvas.addEventListener("mousemove", function (e) { 74 this.mx = e.clientX, this.my = e.client 75 }); 76 var thiz = this; 77 $($window).resize(function () { 78 thiz.ctx.clearRect(0, 0, thiz.canvas.width, thiz.canvas.height), thiz.canvas.width = $window.innerWidth, thiz.canvas.height = $window.innerHeight 79 }); 80 if (typeof this.settings.image === "string") { 81 this.image = $("<img src='" + this.settings.image + "' style='display: none'>"); 82 } 83 ; 84 85 this.snow(); 86 }, Snow.prototype.snow = function () { 87 var thiz = this, 88 render = function () { 89 thiz.ctx.clearRect(0, 0, thiz.canvas.width, thiz.canvas.height); 90 for (var i = 0; i < thiz.flakeCount; i++) { 91 var flake = thiz.flakes[i], 92 x = thiz.mx, 93 y = thiz.my, 94 minDist = 100, 95 x2 = flake.x, 96 y2 = flake.y, 97 dist = Math.sqrt((x2 - x) * (x2 - x) + (y2 - y) * (y2 - y)); 98 if (minDist > dist) { 99 var force = minDist / (dist * dist), 100 xcomp = (x - x2) / dist, 101 ycomp = (y - y2) / dist, 102 deltaV = force / 2; 103 flake.velX -= deltaV * xcomp, flake.velY -= deltaV * ycomp 104 } else 105 switch (flake.velX *= .98, flake.velY <= flake.speed && (flake.velY = flake.speed), thiz.settings.windPower) { 106 case !1: 107 flake.velX += Math.cos(flake.step += .05) * flake.stepSize; 108 break; 109 case 0: 110 flake.velX += Math.cos(flake.step += .05) * flake.stepSize; 111 break; 112 default: 113 flake.velX += .01 + thiz.settings.windPower / 100 114 } 115 if (flake.y += flake.velY, flake.x += flake.velX, (flake.y >= thiz.canvas.height || flake.y <= 0) && thiz.resetFlake(flake), (flake.x >= thiz.canvas.width || flake.x <= 0) && thiz.resetFlake(flake), 0 == thiz.settings.image) { 116 var grd = thiz.ctx.createRadialGradient(flake.x, flake.y, 0, flake.x, flake.y, flake.size - 1); 117 grd.addColorStop(0, thiz.settings.startColor), grd.addColorStop(1, thiz.settings.endColor), thiz.ctx.fillStyle = grd, thiz.ctx.beginPath(), thiz.ctx.arc(flake.x, flake.y, flake.size, 0, 2 * Math.PI), thiz.ctx.fill() 118 } else 119 thiz.ctx.drawImage(thiz.image.get(0), flake.x, flake.y, 2 * flake.size, 2 * flake.size) 120 } 121 $window.cancelAnimationFrame(render), $window.requestAnimationFrame(render) 122 }; 123 render() 124 }, Snow.prototype.resetFlake = function (flake) { 125 if (0 == this.settings.windPower || 0 == this.settings.windPower) 126 flake.x = Math.floor(Math.random() * this.canvas.width), flake.y = 0; 127 else if (this.settings.windPower > 0) { 128 var xarray = Array(Math.floor(Math.random() * this.canvas.width), 0), 129 yarray = Array(0, Math.floor(Math.random() * this.canvas.height)), 130 allarray = Array(xarray, yarray), 131 selected_array = allarray[Math.floor(Math.random() * allarray.length)]; 132 flake.x = selected_array[0], flake.y = selected_array[1] 133 } else { 134 var xarray = Array(Math.floor(Math.random() * this.canvas.width), 0), 135 yarray = Array(this.canvas.width, Math.floor(Math.random() * this.canvas.height)), 136 allarray = Array(xarray, yarray), 137 selected_array = allarray[Math.floor(Math.random() * allarray.length)]; 138 flake.x = selected_array[0], flake.y = selected_array[1] 139 } 140 flake.size = Math.floor(100 * Math.random()) % this.settings.size + 2, flake.speed = Math.floor(100 * Math.random()) % this.settings.speed + Math.random() * flake.size / 10 + .5, flake.velY = flake.speed, flake.velX = 0, flake.opacity = .5 * Math.random() + this.settings.opacity 141 }; 142 143 $.fn.snow = function () { 144 var userCanvas = supportCanvas(); 145 userCanvas && $(this).each(function (i, e) { 146 var scope = {}; 147 $.each(e.attributes, function (index, key) { 148 scope[ $.camelCase(key.name) ] = Number(Number(key.value)) ? Number(key.value) : key.value 149 }); 150 if (typeof scope.image === "string" && scope.image === "fal
150se") { 151 scope.image = false 152 } 153 ; 154 155 new Snow($(e), { 156 speed: 1 || 0, 157 interaction: scope.interaction || !0, 158 size: scope.size || 2, 159 count: scope.count || 200, 160 opacity: scope.opacity || 1, 161 startColor: scope.startColor || "rgba(255,255,255,1)", 162 endColor: scope.endColor || "rgba(255,255,255,0)", 163 windPower: scope.windPower || 0, 164 image: scope.image || !1 165 }); 166 }); 167 if (!userCanvas) { 168 var setting = {}; 169 $(this).each(function (i, e) { 170 setting["image"] = $(e).attr("image") || "./imgs/snow.png"; 171 $(this).remove(); 172 createSnow("", 40); 173 }); 174 } 175 ; 176 }; 177 178 //for ie678 179 /** 180 * method createSnow("", 40); 181 * method removeSnow(); 182 */ 183 function k(a, b, c) { 184 if (a.addEventListener) a.addEventListener(b, c, false); 185 else a.attachEvent && a.attachEvent("on" + b, c) 186 } 187 188 function g(a) { 189 if (typeof window.onload != "function") window.onload = a; 190 else { 191 var b = window.onload; 192 window.onload = function () { 193 b(); 194 a() 195 } 196 } 197 } 198 199 function h() { 200 var a = {}; 201 for (type in { 202 Top: "", 203 Left: "" 204 }) { 205 var b = type == "Top" ? "Y" : "X"; 206 if (typeof window["page" + b + "Offset"] != "undefined") 207 a[type.toLowerCase()] = window["page" + b + "Offset"]; 208 else { 209 b = document.documentElement.clientHeight ? document.documentElement : document.body; 210 a[type.toLowerCase()] = b["scroll" + type] 211 } 212 } 213 return a 214 } 215 216 function l() { 217 var a = document.body, 218 b; 219 if (window.innerHeight) b = window.innerHeight; 220 else if (a.parentElement.clientHeight) b = a.parentElement.clientHeight; 221 else if (a && a.clientHeight) b = a.clientHeight; 222 return b 223 }; 224 var j = true; 225 var f = true; 226 var m = null; 227 var c = []; 228 var createSnow = function (a, b) { 229 clearInterval(m); 230 c = []; 231 m = setInterval(function () { 232 f && b > c.length && Math.random() < b * 0.0025 && c.push(new i(a)); 233 !f && !c.length && clearInterval(m); 234 for (var e = h().top, n = l(), d = c.length - 1; d >= 0; d--) 235 if (c[d]) 236 if (c[d].top < e || c[d].top + c[d].size + 1 > e + n) { 237 c[d].remove(); 238 c[d] = null; 239 c.splice(d, 1) 240 } else { 241 c[d].move(); 242 c[d].draw() 243 } 244 }, 40); 245 k(window, "scroll", 246 function () { 247 for (var e = c.length - 1; e >= 0; e--) c[e].draw() 248 }) 249 }; 250 var removeSnow = function () { 251 clearInterval(m); 252 do { 253 c.pop().remove(); 254 } while (c.length); 255 }; 256 257 //éªè±çæé å½æ°; 258 function i(a) { 259 this.parent = document.body; 260 this.createEl(this.parent, a); 261 this.size = Math.random() * 5 + 5; 262 this.el.style.width = Math.round(this.size) + "px"; 263 this.el.style.height = Math.round(this.size) + "px"; 264 this.maxLeft = document.body.offsetWidth - this.size; 265 this.maxTop = document.body.offsetHeight - this.size; 266 this.left = Math.random() * this.maxLeft; 267 this.top = h().top + 1; 268 this.angle = 1.4 + 0.2 * Math.random(); 269 this.minAngle = 1.4; 270 this.maxAngle = 1.6; 271 this.angleDelta = 0.01 * Math.random(); 272 this.speed = 2 + Math.random() 273 } 274 275 i.prototype = { 276 createEl: function (a, b) { 277 this.el = document.createElement("img"); 278 this.el.classname = "nicesnowclass"; 279 this.el.setAttribute("src", b || "./imgs/snow.png"); 280 this.el.style.position = "absolute"; 281 this.el.style.display = "block"; 282 this.el.style.zIndex = "99999"; 283 this.parent.appendChild(this.el) 284 }, 285 move: function () { 286 if (this.angle < this.minAngle || this.angle > this.maxAngle) 287 this.angleDelta = -this.angleDelta; 288 this.angle += this.angleDelta; 289 this.left += this.speed * Math.cos(this.angle * Math.PI); 290 this.top -= this.speed * Math.sin(this.angle * Math.PI); 291 if (this.left < 0) this.left = this.maxLeft; 292 else if (this.left > this.maxLeft) this.left = 0 293 }, 294 draw: function () { 295 this.el.style.top = Math.round(this.top) + "px"; 296 this.el.style.left = Math.round(this.left) + "px" 297 }, 298 remove: function () { 299 this.parent.removeChild(this.el); 300 this.parent = this.el = null 301 } 302 }; 303})(jQuery);
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.