HTML5的Canvas特性非常实用，我们不仅可以在Canvas画布上绘制各种图形，也可以制作绚丽的动画，比如这次介绍的水波纹动画特效。以前我们也分享过一款基于HTML5 WebGL的水波荡漾动画，让人惊叹不已，这次分享的HTML5 Canvas水波纹动画同样非常震撼人心。
在线演示 源码下载
<!DOCTYPE html><html lang="zh"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta name="viewport" content="width=device-width, initial-scale=1.0"><title>HTML5 Canvas水波纹动画特效DEMO演示</title><link rel="stylesheet" type="text/css" href="css/normalize.css" /><link rel="stylesheet" type="text/css" href="css/zzsc.css"><script src="js/jquery-1.11.0.min.js" type="text/javascript"></script> <script type="text/javascript" src="js/jquery.waterrippleeffect.min.js"></script><style type="text/css"> ????html, body, div, span, applet, object, iframe, ???h1, h2, h3, h4, h5, h6, p, blockquote, pre, ???a, abbr, acronym, address, big, cite, code, ???del, dfn, em, font, img, ins, kbd, q, s, samp, ???small, strike, strong, sub, sup, tt, var, ???b, u, i, center, ???dl, dt, dd, ol, ul, li, ???fieldset, form, label, legend, ???table, caption, tbody, tfoot, thead, tr, th, td { ???????margin: 0; ???????padding: 0; ???????border: 0; ???????outline: 0; ???????font-size: 100%; ???????vertical-align: baseline; ???????/*background: transparent;*/ ???????box-sizing: border-box; ???} ???body { ???????overflow: hidden; ???} ???.container{ ???????width: 480px; ???????height: 480px; ???????margin:20px auto; ???????position: relative; ???} ???.clear { ???????clear: both; ???????height: 0; ???????font-size: 0; ???????line-height: 0; ???}</style> <script> ???$( document ).ready( function() { ???????//------------------------------------------------------------------------ ???????$( ‘#preloaderDiv‘ ).delay( 1000 ).fadeTo( 1000 , 0, function() { ???????????$( this ).css( ‘display‘, ‘none‘ ); ???????} ); ???????$( ‘#startDiv‘ ).css( ‘cursor‘, ‘pointer‘ ).click( function() { ???????????//$( this ).css( ‘display‘, ‘none‘ ); ???????????$( this ).delay( 10 ).fadeTo( 1000 , 0, function() { ???????????????$( this ).css( ‘display‘, ‘none‘ ); ???????????} ); ???????????init(); ???????} ); ???????//------------------------------------------------------------------------ ???????function init() { ???????????//Settings - params for WaterRippleEffect ???????????var settings = { ???????????????image: ‘./img/SwimmingPool.jpg‘,//image path ???????????????rippleRadius: 3,//radius of the ripple ???????????????width: 480,//width ???????????????height: 480,//height ???????????????delay: 1,//if auto param === true. 1 === 1 second delay for animation ???????????????auto: true//if auto param === true, animation starts on it′s own ???????????}; ???????????//------------------------------------------------------------------------ ???????????//standalone ???????????//init ???????????????????????var waterRippleEffect = new WaterRippleEffect( document.getElementById( ‘holder‘ ), settings ); ???????????document.getElementById( ‘holder‘ ).style.cursor = ‘pointer‘; ???????????//on click ???????????????????????document.getElementById( ‘holder‘ ).addEventListener( ‘click‘, function( e ) { ???????????????var mouseX = e.layerX; ???????????????var mouseY = e.layerY; ???????????????waterRippleEffect.disturb( mouseX, mouseY ); ???????????} ); ???????????????????????//on mousemove ???????????????????????document.getElementById( ‘holder‘ ).addEventListener( ‘mousemove‘, function( e ) { ???????????????var mouseX = e.layerX; ???????????????var mouseY = e.layerY; ???????????????waterRippleEffect.disturb( mouseX, mouseY ); ???????????} ); ???????????????????????//------------------------------------------------------------------------ ???????????//jQuery ???????????//init ???????????/* ???????????$( ‘#holder‘ ).waterRippleEffect( settings ); ???????????$( ‘#holder‘ ).css( ‘cursor‘, ‘pointer‘ ); ???????????*/ ???????????//on click ???????????/* ???????????$( ‘#holder‘ ).click( function( e ) { ???????????????var mouseX = e.pageX - $( this ).offset().left; ???????????????var mouseY = e.pageY - $( this ).offset().top; ???????????????$( ‘#holder‘ ).waterRippleEffect( "disturb", mouseX, mouseY ); ???????????} ); ???????????*/ ???????????//on mousemove ???????????/* ???????????$( ‘#holder‘ ).mousemove( function( e ) { ???????????????var mouseX = e.pageX - $( this ).offset().left; ???????????????var mouseY = e.pageY - $( this ).offset().top; ???????????????$( ‘#holder‘ ).waterRippleEffect( "disturb", mouseX, mouseY ); ???????????} ); ???????????*/ ???????}; ???????//------------------------------------------------------------------------ ???} ); ???</script></head><body><div class="container"> ???<div id=‘holder‘ style=‘width:480px; height:480px; position:absolute;‘></div> ???<div id=‘startDiv‘ style=‘background-color:#000; position:absolute; width:480px; height:480px;‘> ???????????????????<img src=‘img/startBt.jpg‘ width=‘480px‘ height=‘480px‘ alt=‘Start‘ style=‘position:absolute; top:50%; left:50%; margin-top:-240px; margin-left:-240px;‘> ???</div> ???????<div id=‘preloaderDiv‘ style=‘background-color:#000; position:absolute; width:480px; height:480px; pointer-events:none‘> ???????????????<img src=‘img/PreloaderDark.gif‘ width=‘44px‘ height=‘48px‘ alt=‘Preloader‘ style=‘position:absolute; top:50%; left:50%; margin-top:-22px; margin-left:-24px;‘> ???</div></div><div style="text-align:center;clear:both;"><script src="/gg_bd_ad_720x90.js" type="text/javascript"></script><script src="/follow.js" type="text/javascript"></script></div></body></html>
HTML5 Canvas水波纹动画特效
原文地址：https://www.cnblogs.com/ltb6w/p/9163977.html