HTML5 随机弹跳的小球
2014-02-23 15:14
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原文:HTML5 随机弹跳的小球查看效果:http://keleyi.com/a/bjad/tc1y11dy.htm
Chrome效果图:
火狐效果图:
以下是源码:
web前端:/article/4797642.html
Chrome效果图:
火狐效果图:
以下是源码:
<!doctype html> <html> <head> <title>HTML5 随机弹跳的小球-柯乐义</title> <style> body{ font-family: 微软雅黑; } body,h1{ margin:0; } canvas{ display:block;margin-left: auto;margin-right: auto; border:1px solid #DDD; background: -webkit-linear-gradient(top, #222,#111); } </style> </head> <body> <h1>柯乐义 HTML5特效 随机弹跳的小球</h1> <div>请使用支持HTML5的浏览器开打本页。<a href="http://keleyi.com/a/bjad/tc1y11dy.htm" target="_blank">原文</a> <button id="stop-keleyi-com">暂停</button> <button id="run-keleyi-com">继续</button> <button id="addBall-keleyi-com">增加小球</button> <button onclick="javascript:window.location.reload();">刷新</button> <br />每次刷新页面的小球大小,颜色,运动路线,都是新的,可以点击上面各个按钮看看效果。 </div> <canvas id="canvas-keleyi-com" > </canvas> <script type="text/javascript" src="http://keleyi.com/keleyi/pmedia/jquery/jquery-1.11.0.min.js"></script> <script type="text/javascript"> var nimo = { aniamted: null, content: null, data: { radiusRange: [5, 20], speedRange: [-5, 5], scrollHeight: null, scrollWdith: null }, balls: [], ele: { canvas: null }, fn: { creatRandom: function (startInt, endInt) {//生产随机数 var iResult; iResult = startInt + (Math.floor(Math.random() * (endInt - startInt + 1))); return iResult }, init: function () { nimo.data.scrollWdith = document.body.scrollWidth; nimo.data.scrollHeight = document.body.scrollHeight; nimo.ele.canvas = document.getElementById('canvas-ke'+'leyi-com'); nimo.content = nimo.ele.canvas.getContext('2d'); nimo.ele.canvas.width = nimo.data.scrollWdith - 50; nimo.ele.canvas.height = nimo.data.scrollHeight - 100; }, addBall: function () { var aRandomColor = []; aRandomColor.push(nimo.fn.creatRandom(0, 255)); aRandomColor.push(nimo.fn.creatRandom(0, 255)); aRandomColor.push(nimo.fn.creatRandom(0, 255)); var iRandomRadius = nimo.fn.creatRandom(nimo.data.radiusRange[0], nimo.data.radiusRange[1]); var oTempBall = { coordsX: nimo.fn.creatRandom(iRandomRadius, nimo.ele.canvas.width - iRandomRadius), coordsY: nimo.fn.creatRandom(iRandomRadius, nimo.ele.canvas.height - iRandomRadius), radius: iRandomRadius, bgColor: 'rgba(' + aRandomColor[0] + ',' + aRandomColor[1] + ',' + aRandomColor[2] + ',0.5)' }; oTempBall.speedX = nimo.fn.creatRandom(nimo.data.speedRange[0], nimo.data.speedRange[1]); if (oTempBall.speedX === 0) { oTempBall.speedX = 1 } if (oTempBall.speedY === 0) { oTempBall.speedY = 1 } oTempBall.speedY = nimo.fn.creatRandom(nimo.data.speedRange[0], nimo.data.speedRange[1]); nimo.balls.push(oTempBall) }, drawBall: function (bStatic) { var i, iSize; nimo.content.clearRect(0, 0, nimo.ele.canvas.width, nimo.ele.canvas.height) for (var i = 0, iSize = nimo.balls.length; i < iSize; i++) { var oTarger = nimo.balls[i]; nimo.content.beginPath(); nimo.content.arc(oTarger.coordsX, oTarger.coordsY, oTarger.radius, 0, 10); nimo.content.fillStyle = oTarger.bgColor; nimo.content.fill(); if (!bStatic) { if (oTarger.coordsX + oTarger.radius >= nimo.ele.canvas.width) { oTarger.speedX = -(Math.abs(oTarger.speedX)) } if (oTarger.coordsX - oTarger.radius <= 0) { oTarger.speedX = Math.abs(oTarger.speedX) } if (oTarger.coordsY - oTarger.radius <= 0) { oTarger.speedY = Math.abs(oTarger.speedY) } if (oTarger.coordsY + oTarger.radius >= nimo.ele.canvas.height) { oTarger.speedY = -(Math.abs(oTarger.speedY)) } oTarger.coordsX = oTarger.coordsX + oTarger.speedX; oTarger.coordsY = oTarger.coordsY + oTarger.speedY; } } }, run: function () { nimo.fn.drawBall(); nimo.aniamted = setTimeout(function () { nimo.fn.drawBall(); nimo.aniamted = setTimeout(arguments.callee, 10) }, 10) }, stop: function () { clearTimeout(nimo.aniamted) } } } window.onload = function () { nimo.fn.init(); var i; for (var i = 0; i < 10; i++) { nimo.fn.addBall(); } nimo.fn.run(); document.getElementById('stop-kel'+'eyi-com').onclick = function () { nimo.fn.stop() } document.getElementById('run-keley'+'i-com').onclick = function () { nimo.fn.stop() nimo.fn.run() } document.getElementById('addBall-k'+'eleyi-com').onclick = function () { var i; for (var i = 0; i < 10; i++) { nimo.fn.addBall(); } nimo.fn.drawBall(true); } } </script> </body> </html>
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