Canvas snow

Developer
IEkiller
Size
2,572 Kb
Views
6,069
  1. Canvas snow Previews
  2. Canvas snow HTML Codes
  3. Canvas snow CSS Codes
  4. Canvas snow JS Codes

How do I make an canvas snow?

Just a test demo . What is a canvas snow? How do you make a canvas snow? This script and codes were developed by IEkiller on 17 January 2023, Tuesday.

Canvas snow Previews
IQ Test

Canvas snow - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>canvas snow</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <div id="iDiv">	<input type="button" value="小雪"/>	<input type="button" value="中雪"/>	<input type="button" value="大雪"/>	</div>	<canvas id="can1" width= 1000 height=800 ></canvas> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Canvas snow - Script Codes CSS Codes

body{ background:#333;}	#iDiv{width:200px; height:30px; background: #333; position: fixed; right:50px; bottom:30px;}

Canvas snow - Script Codes JS Codes

window.onload = function(){	var oSnow = new SnowCan({num:'500'});	var iDiv = document.getElementById('iDiv');	var aInput = iDiv.getElementsByTagName('input');	aInput[0].onclick = function(){	oSnow.num = 100;	oSnow.init();	}	aInput[1].onclick = function(){	oSnow.num = 500;	oSnow.init();	}	aInput[2].onclick = function(){	oSnow.num = 1000;	oSnow.init();	}	}	function SnowCan(oJson){	var oJson = oJson || {},	oC = document.getElementById(oJson.id) || document.getElementsByTagName('canvas')[0];	this.oCG = oC.getContext('2d'); this.oCG.clipContent= false;	this.num = oJson.num || 100;	this.aColor = oJson.aColor || ['#fff','#eee'];	this.GLSpeed = oJson.GLspeed || 0;	this.aSnowW = [1,2,3];	this.docW = oJson.docW || oC.width;	this.docH = oJson.docH || oC.height;	this.timer = null;	this.jPo = {	x : [],	y : []	};	this.jSp = {	x : [1,0.5,1.2,-1,-0.5],	y : [1.5,2.5,3.8,3.5]	};	this.init();	var _this = this;	this.timer = setInterval(function(){	_this.oCG.clearRect(0,0,_this.docW, _this.docH);	_this.creatArc();	},1000/60);	}	SnowCan.prototype.init = function(){	this.jPo.x = toRandom(-this.docW, this.docW, this.num);	this.jPo.y = toRandom(-this.docH, this.docH, this.num);	this.oCG.fillStyle = this.aColor[0];	this.creatArc();	console.log(this.jPo)	}	SnowCan.prototype.creatArc = function(){	for( var i = 0; i< this.num ; i++){	this.oCG.beginPath();	this.oCG.arc(this.jPo.x[i], this.jPo.y[i], this.aSnowW[i%this.aSnowW.length], 0 ,2*Math.PI);	this.oCG.closePath();	this.oCG.fill();	this.jPo.x[i]+= this.jSp.x[i%this.jSp.x.length]/2 ;	this.jPo.y[i]+= this.jSp.y[i%this.jSp.y.length]/2;	if(this.jPo.x[i] > this.docW + 10 || this.jPo.x[i] < 0 - 10 || this.jPo.y[i] > this.docH + 10){	this.jPo.x[i] = getRandom(0, this.docW);	this.jPo.y[i] = getRandom(-100, 0);	}	}	}	function toRandom(iMin,iMax,iNum){	var json={};	var arr=[];	while(arr.length<iNum)	{	var rnum=Math.floor(Math.random()*(iMax-iMin))+iMin;	if(!json[rnum])	{	json[rnum]=rnum;	arr.push(rnum);	}	}	return arr;	}
function getRandom(iMin,iMax){	return Math.round(Math.random()*(iMax-iMin))+iMin;
}
Canvas snow - Script Codes
Canvas snow - Script Codes
Home Page Home
Developer IEkiller
Username win7killer
Uploaded January 17, 2023
Rating 3
Size 2,572 Kb
Views 6,069
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