AJax技术

svg动画之动态描边效果

字号+ 作者:H5之家 来源:H5之家 2017-02-25 12:01 我要评论( )

本文主要介绍了svg实现的动态描边效果,文中分享了两个实例:1.一个简单的线一点一点画出来的效果;2.用同样的原理画一个“蓝胖子”。具有很好的参考价值,下面

时间:2017-02-22来源: 作者:源码库 文章热度: ℃

1、首先先做一个简单的线一点一点画出来的效果,主要使用svg中的“strokeDasharray”、“strokeDashoffset”属性,通过css3中的transtion改变strokeDashoffset来实现动画。

注:path中的数据通过在ai中划线后存储为svg格式就可以拿到;

效果图:

svg描边动画,svg,描边,描边效果

代码如下:

<svg class="move_line1" xmlns="" width="600px" height="150px"> <path d="M62.9 14.9c-25-7.74-56.6 4.8-60.4 24.3-3.73 19.6 21.6 35 39.6 37.6 42.8 6.2 72.9-53.4 116-58.9 65-18.2 191 101 215 28.8 5-16.7-7-49.1-34-44-34 11.5-31 46.5-14 69.3 9.38 12.6 24.2 20.6 39.8 22.9 91.4 9.05 102-98.9 176-86.7 18.8 3.81 33 17.3 36.7 34.6 2.01 10.2.124 21.1-5.18 30.1" stroke="#000" stroke-width="4" fill="none"> </path> </svg> <script> //svg 动画一般用transtion和animation var path1 = document.querySelector(".move_line1 path"); var length1 = path1.getTotalLength(); //清除动作 path1.style.transtion = path1.style.WebkitTransition = "none"; //设置起点 path1.style.strokeDasharray = length1 + ' ' + length1; path1.style.strokeDashoffset = length1; //获取一个区域,获取相关的样式,让浏览器寻找一个起始点 path1.getBoundingClientRect(); //定义动作 path1.style.transition = path1.style.WebkitTransition = 'stroke-dashoffset 2s ease-in-out'; //GO path1.style.strokeDashoffset = '0'; </script>

2、与画线的效果,接下来用同样的原理来画一个“蓝胖子”,蓝胖子同样是需要用ai画出来,将所有的元素存在数组里面遍历时改变transtion中的during和delay从而实现划线的先后顺序。

效果图:

svg描边动画,svg,描边,描边效果

代码如下:

<div class="move_line2"> <svg xmlns="" width="600px" height="500px"> <path fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" d=" M335.088,373.962c23.125-7.219,54.068,12.896,69.115,44.93s8.498,63.855-14.625,71.074c-23.125,7.221-54.068-12.895-69.115-44.928 S311.965,381.183,335.088,373.962z"></path> <path fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" d=" M209.983,9.426c87.495,4.372,158.857,76.303,158.857,160.122c0,46.699-22.158,87.484-56.91,113.702 c22.268,46.217,33.992,89.483,14.348,125.051c4.02-7.537,6.611-15.313,8.555-23.193c11.648,26.85,14.068,52.875-6.887,75.711 c-64.363,13.082-86.986-18.811-194.209-8.391l-3.699-107.049l-0.92-22.406l0.873,22.42c-22.874-5.814-45.173-11.861-65.204-17.99 l10.062-44.714l49.898,2.646c-43.949-22.82-74.717-76.747-73.621-131.665C51.125,69.85,122.487,5.053,209.983,9.426L209.983,9.426z "></path> <path fill-rule="evenodd" 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stroke-width="2.8347" stroke-miterlimit="2.4142" cx="279.449" cy="193.855" rx="30.133" ry="30.788"></ellipse> <circle fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" cx="90.681" cy="49.358" r="27.412"></circle> <path fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" d=" M124.459,285.183c-36.085-18.873-63.232-58.725-71.063-102.821c-0.052-0.295-0.019-0.163-0.069-0.457 c-43.423-5.859-35.264-73.124,0.427-55.668c0.067-0.353,0.019-0.145,0.088-0.496c8.143-41.139,34.012-75.528,69.743-96.045 c98.492,58.677,146.511,142.883,108.603,245.678c-33.24,3.419-66.109,8.303-102.612,9.683 C127.472,285.135,125.873,284.957,124.459,285.183L124.459,285.183z"></path> <path fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" d=" M116.536,84.903c15.737,3.062,31.281,7.092,46.398,13.256"></path> <path 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fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" cx="45.643" cy="299.778" r="33.549"></circle> <line fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" x1="330.418" y1="358.101" x2="350.104" y2="352.659"></line> <circle fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.8347" stroke-miterlimit="2.4142" cx="356.516" cy="351.396" r="9.241"></circle> <circle fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.2677" stroke-miterlimit="2.4142" cx="144.495" cy="309.078" r="11.591"></circle> <path fill-rule="evenodd" clip-rule="evenodd" fill="none" stroke="#000000" stroke-width="2.2677" stroke-miterlimit="2.4142" d=" M155.516,305.494c0.344,1.052,0.54,2.168,0.566,3.322l-23.157-0.421c0.067-1.153,0.305-2.262,0.687-3.3L155.516,305.494 L155.516,305.494z"></path> <path fill-rule="evenodd" clip-rule="evenodd" fill="none" d="M134.718,315.29c-0.978-1.533-1.605-3.309-1.771-5.207 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"circle"){ length = 2*Math.PI*path2.getAttribute("r"); }else if(path2.tagName == "line"){ var x_1=path2.getAttribute("x1"),y_1=path2.getAttribute("y1"),x_2=path2.getAttribute("x2"),y_2=path2.getAttribute("y2"); length = Math.sqrt(Math.pow((x_1-x_2),2) + Math.pow((y_1-y_2),2)); } path2.style.strokeDasharray = length + ' ' + length; path2.style.strokeDashoffset = length; return Math.pow(length, 0.5) * 0.02; }); paths[0].getBoundingClientRect(); paths.forEach(function(path, i) { path.style.transition = path.style.WebkitTransition = 'stroke-dashoffset ' + durations[i] + 's ' + begin + 's ease-in-out'; path.style.strokeDashoffset = '0'; path.setAttribute("class", "shade"); begin += durations[i] + 0.1; }); } window.addEventListener('load', fullSketch); }()); </script>

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