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這篇文章給大家分享的是有關SVG動畫vivus.js庫怎么用的內容。小編覺得挺實用的，因此分享給大家做個參考，一起跟隨小編過來看看吧。
SVG動畫vivus.js庫使用整理，具體實例代碼如下所示：
使用方法如圖：
HTML例子代碼：
<!DOCTYPE html>
<html lang="en">
<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>vivus.js - test</title>
<style type="text/css">
svg * {fill: none;stroke: currentColor;stroke-width:4;}
.sunrise {color: #f037a5; background-color: #f8c72c;}
.matrix {color: #86e0c4; background-color: #181f21;}
.electric {color: #78C9DB; background-color: #E4175B;}
.night {color: #D3D679; background-color: #316BD2;}
i{ font-style:normal; color:#f00;}
span{ color:#316BD2;}
</style>
</head>
<body>
<div>
<p>
<span>var synthD</span> = new Vivus('<i>synth-dynamic</i>', {<br>
<i>file: </i>'vivus-git/synth.svg',<br>
<i>type: </i>'oneByOne',<br>
duration: 200,<br>
<i>start: </i>'manual',<br>
<i>animTimingFunction:</i> Vivus.EASE_OUT_BOUNCE<br>
});
</p>
<p>
<span>synth-dynamic：</span>SVG的ID 或 加載外部SVG文件的父標簽
</p>
<p>
<span>file:</span><i>vivus-git/synth.svg</i>，如果是SVG的ID則可省略此設置，如果是加載外部SVG文件的父標簽，對應的值則是SVG文件的路徑
</p>
<p>
<span>type:</span><br>
對就值：<i>delayed</i> 每條路徑元素繪制在同一時間用小延遲開始。這是目前默認動畫。<br>
對就值：<i>scenario-sync</i> 每一行都是同步的。他們都在同一時間開始和結束,因此得名“同步”。<br>
對就值：<i>oneByOne</i> 每個路徑元素是一個接一個。這個動畫給人最好的印象的繪畫。
</p>
<p>
<span>start:</span>是否自動播放，可省略此設置，不設置則默認自動播放<br>
對就值：<i>autostart</i> 默認值，自動播放<br>
對就值：<i>manual</i> 不自動播放，需要事件觸發播放
</p>
<p>
<span>animTimingFunction:</span>動畫效果<br>
對就值：<i>LINEAR</i> 動畫從頭到尾的速度是相同的<br>
對就值：<i>EASE</i> 動畫以低速開始，然后加快，在結束前變慢。<br>
對就值：<i>EASE_IN</i> 動畫以低速開始。<br>
對就值：<i>EASE_OUT</i> 動畫以低速結束。<br>
對就值：<i>EASE_OUT_BOUNCE</i> 動畫彈性結束
</p>
</div>
<div>
<p>
<span>synthD</span><i>.play();</i> 播放動畫<br>
<span>synthD</span><i>.reset().play();</i> 重新播放動畫<br>
<span>synthD</span><i>.play(-3);</i> 倒帶，反向收回之前完成的動畫
</p>
</div>
<div class="matrix">
<div>
<p>每條路徑元素繪制在同一時間用小延遲開始。這是目前默認動畫。<br>vivus-git/obturateur.svg</p>
<button onclick="obt1.reset().play();">重新播放動畫</button>
<button onclick="obt1.play(-3);">倒帶</button>
</div>
<!--
<div id="obt"></div>
-->
<div>
<object id="obt" data="vivus-git/obturateur.svg" type="image/svg+xml" ></object>
</div>
</div>
<div class="sunrise">
<div>
<p>每一行都是同步的。他們都在同一時間開始和結束,因此得名“同步”。<br>vivus-git/polaroid.svg</p>
<button onclick="polaroidD.reset().play();">重新播放動畫</button>
<button onclick="polaroidD.play(-3);">倒帶</button>
</div>
<div id="polaroid-dynamic"></div>
</div>
<div class="electric">
<div>
<p>每一行都是同步的。他們都在同一時間開始和結束,因此得名“同步”。<br>vivus-git/hi-there.svg</p>
<button onclick="hiD.play();">播放動畫</button>
<button onclick="hiD.play(-3);">倒帶</button>
</div>
<!--<div id="hi-dynamic" ></div>-->
<svg height="300" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 404.7 354" enable-background="new 0 0 404.7 354" id="hi-dynamic" onclick="hiD.reset().play();">
<!-- HI -->
<path data-duration="10" d="M324.6,61.2c16.6,0,29.5-12.9,29.5-29.5c0-16.6-12.9-29.5-29.5-29.5c-16.6,0-29.5,12.9-29.5,29.5C295.1,48.4,308,61.2,324.6,61.2z" ></path>
<path data-duration="130" d="M366.2,204.2c-9.8,0-15-5.6-15-15.1V77.2h-85v28h29.5c9.8,0,8.5,2.1,8.5,11.6v72.4c0,9.5,0.5,15.1-9.3,15.1H277h-20.7c-8.5,0-14.2-4.1-14.2-12.9V52.4c0-8.5,5.7-12.3,14.2-12.3h28.8v-28h-127v28h28.1c8.5,0,9.9,2.1,9.9,8.9v56.1h-75V53.4c0-11.5,8.6-13.3,17-13.3h21v-28H2.2v28h36c8.5,0,12,2.1,12,7.9v142.2c0,8.5-3.6,13.9-12,13.9h-21v33h222v-33h-11c-8.5,0-17-4.1-17-12.2v-57.8h75v58.4c0,9.1-1.4,11.6-9.9,11.6h-18.1v33h222.9h6.9h202.2v-33H366.2z" ></path>
<path data-async="" data-delay="20" d="M358.8,82.8c11.1-4.2,18.8-14.7,18.8-27.5c0-8.5-3.4-16-8.9-21.3" ></path>
<path data-async="" d="M124.2,105.7V77c0-11.5,9.1-13.8,17.5-13.8h20.5V44.7" ></path>
<path data-async="" d="M147.9,40.2L171.2,63.2L175.7,63.2" ></path>
<path data-async="" d="M295.1,32.1L275.2,12.2" ></path>
<path data-async="" d="M266.2,204.7V75.9c0-8.5,5.2-12.8,13.7-12.8h28.3V44.7" ></path>
<path data-async="" d="M265.9,105.2L289.2,129.2L293.7,129.2" ></path>
<path data-async="" d="M374.2,204.7L374.2,94.2L358.8,82.8L351.2,77.2" ></path>
<path data-async="" d="M148.2,237.2L171.2,261.2L294.6,261.2L300.5,261.2L402.2,261.2L402.2,228.2L379.2,204.2" ></path>
<path data-async="" d="M124.2,204.7L124.2,157.2L175.7,157.2" ></path>
<path data-async="" d="M147.7,228.2L129.2,204.2" ></path>
<path data-async="" d="M7.2,237.3L30.2,261.2L152.2,261.2L152.2,241.7" ></path>
<path data-async="" d="M1.9,40.2L26,63.2L39.7,63.2" ></path>
<path data-async="" d="M129.2,12.2L148.2,33.2" ></path>
<path data-async="" d="M303.9,53L328.1,77.2" ></path>
<path d="M345.1,10.5L368.7,34" ></path>
<!-- there -->
<path data-delay="30" data-duration="60" stroke-linecap="round" stroke-linejoin="round" d="M76.8,337.3c0,0,1.9,12.2,13.1,12.2c22.1,0,23.8-1.8,59-66.4c-19.7,35.7-36.4,66.2-19.3,66.2c15.2,0,22.9-14.2,28.3-23.7c3.3-0.5,24-3.2,35-25.5c4-8.1,4.1-17.8-8.1-15.2c-5.6,1.2-13.1,14.8-15.7,19.2c-7.6,12.7-22.4,45.2-22.4,45.2s10.3-22.4,21.5-22.4c15.5,0-9.4,22.4,4.7,22.4c4.9,0,11.7-11.4,16.6-20.9c7.5,4.7,19.7,1.7,24.5-8.1c10.1-20.4-14.4-12.8-24.5,8.1c-5.5,11.3-2.2,21.1,11.2,21.1c16.4,0,26.1-28.3,30.5-37.5c9.9,2.5,14,2.5,22.7-1.1c-3.5,5.1-24,38.1-8.3,38.1c6.7,0,11.7-11.4,16.6-20.9c7.5,4.7,19.7,1.7,24.5-8.1c10.1-20.4-14.4-12.8-24.5,8.1c-5.5,11.3-2.2,21.1,11.2,21.1c16.4,0,20.6-4,24.7-10.5" ></path>
<path stroke-linecap="round" stroke-linejoin="round" d="M157.3,300.8c3.8-2.3-29,0.8-35.6,3.2" ></path>
</svg>
</div>
<div class="night">
<div>
<p>每個路徑元素是一個接一個。這個動畫給人最好的印象的繪畫。<br>vivus-git/synth.svg</p>
<button onclick="synthD.play();">播放動畫</button>
<button onclick="synthD.play(-3);">倒帶</button>
</div>
<div id="synth-dynamic" ></div>
</div>
<!--<script src="vivus.js"></script>-->
<script src="http://cdn.jsdelivr.net/vivus/latest/vivus.min.js"></script>
<script>
if (window.location.protocol === 'file:') {
alert('請使用HTTP服務器服務(http://localhost/)訪問此頁面。');
}
var obt1 = new Vivus('obt', {
/*
加載SVG外部文件的方法：
1、有object標簽則 不用 加載SVG外部文件的代碼：file: 'vivus-git/obturateur.svg'
以上HTML中有此代碼：<object id="obt" data="vivus-git/obturateur.svg" type="image/svg+xml" ></object>
2、沒有object標簽則 要 加載SVG外部文件的代碼：file: 'vivus-git/obturateur.svg'
以上HTML中有此代碼 已注釋：<div id="obt"></div>
*/
//file: 'vivus-git/obturateur.svg',
type: 'delayed',//每條路徑元素繪制在同一時間用小延遲開始。這是目前默認動畫。
duration: 150,
//start: 'autostart'
});
var polaroidD = new Vivus('polaroid-dynamic', {
file: 'vivus-git/polaroid.svg',
//file: 'vivus-git/111.svg',
type: 'scenario-sync',//每一行都是同步的。他們都在同一時間開始和結束,因此得名“同步”。
duration: 20,
start: 'autostart'
});
var hiD = new Vivus('hi-dynamic', {
/*
1、SVG內部標簽， 不用 加載SVG外部文件的代碼：file: 'vivus-git/hi-there.svg'
以上HTML中有此代碼：<svg height="300" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 404.7 354" enable-background="new 0 0 404.7 354" id="hi-dynamic" onclick="hiD.reset().play();">
2、加載SVG外部文件的方法：file: 'vivus-git/hi-there.svg'
以上HTML中有此代碼 已注釋：<div id="hi-dynamic" ></div>
*/
//file: 'vivus-git/hi-there.svg',
type: 'scenario-sync',
duration: 20,
start: 'manual'
});
var synthD = new Vivus('synth-dynamic', {
file: 'vivus-git/synth.svg',
type: 'oneByOne',//每個路徑元素是一個接一個。這個動畫給人最好的印象的繪畫。
duration: 200,
start: 'manual',
animTimingFunction: Vivus.EASE_OUT
});
// function easeOutBounce (x) {
// var base = -Math.cos(x * (0.5 * Math.PI)) + 1;
// var rate = Math.pow(base,1.5);
// var rateR = Math.pow(1 - x, 2);
// var progress = -Math.abs(Math.cos(rate * (2.5 * Math.PI) )) + 1;
// return (1- rateR) + (progress * rateR);
// }
</script>
</body>
</html>
hi-there.svg代碼：
[html] view plain copy
<svg height="300" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 404.7 354" enable-background="new 0 0 404.7 354">
<g stroke="#f9f9f9" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10">
<!-- HI -->
<path data-duration="10" d="M324.6,61.2c16.6,0,29.5-12.9,29.5-29.5c0-16.6-12.9-29.5-29.5-29.5c-16.6,0-29.5,12.9-29.5,29.5C295.1,48.4,308,61.2,324.6,61.2z"/>
<path data-duration="130" d="M366.2,204.2c-9.8,0-15-5.6-15-15.1V77.2h-85v28h29.5c9.8,0,8.5,2.1,8.5,11.6v72.4c0,9.5,0.5,15.1-9.3,15.1H277h-20.7c-8.5,0-14.2-4.1-14.2-12.9V52.4c0-8.5,5.7-12.3,14.2-12.3h28.8v-28h-127v28h28.1c8.5,0,9.9,2.1,9.9,8.9v56.1h-75V53.4c0-11.5,8.6-13.3,17-13.3h21v-28H2.2v28h36c8.5,0,12,2.1,12,7.9v142.2c0,8.5-3.6,13.9-12,13.9h-21v33h222v-33h-11c-8.5,0-17-4.1-17-12.2v-57.8h75v58.4c0,9.1-1.4,11.6-9.9,11.6h-18.1v33h222.9h6.9h202.2v-33H366.2z"/>
<path data-async="" data-delay="20" d="M358.8,82.8c11.1-4.2,18.8-14.7,18.8-27.5c0-8.5-3.4-16-8.9-21.3"/>
<path data-async="" d="M124.2,105.7V77c0-11.5,9.1-13.8,17.5-13.8h20.5V44.7"/>
<polyline data-async="" points="147.9,40.2 171.2,63.2 175.7,63.2"/>
<line data-async="" x1="295.1" y1="32.1" x2="275.2" y2="12.2"/>
<path data-async="" d="M266.2,204.7V75.9c0-8.5,5.2-12.8,13.7-12.8h28.3V44.7"/>
<polyline data-async="" points="265.9,105.2 289.2,129.2 293.7,129.2"/>
<polyline data-async="" points="374.2,204.7 374.2,94.2 358.8,82.8 351.2,77.2"/>
<polyline data-async="" points="148.2,237.2 171.2,261.2 294.6,261.2 300.5,261.2 402.2,261.2 402.2,228.2 379.2,204.2"/>
<polyline data-async="" points="124.2,204.7 124.2,157.2 175.7,157.2"/>
<line data-async="" x1="147.7" y1="228.2" x2="129.2" y2="204.2"/>
<polyline data-async="" points="7.2,237.3 30.2,261.2 152.2,261.2 152.2,241.7"/>
<polyline data-async="" points="1.9,40.2 26,63.2 39.7,63.2"/>
<line data-async="" x1="129.2" y1="12.2" x2="148.2" y2="33.2"/>
<line data-async="" x1="303.9" y1="53" x2="328.1" y2="77.2"/>
<line x1="345.1" y1="10.5" x2="368.7" y2="34"/>
<!-- there -->
<path data-delay="30" data-duration="60" stroke-linecap="round" stroke-linejoin="round" d="M76.8,337.3c0,0,1.9,12.2,13.1,12.2c22.1,0,23.8-1.8,59-66.4c-19.7,35.7-36.4,66.2-19.3,66.2c15.2,0,22.9-14.2,28.3-23.7c3.3-0.5,24-3.2,35-25.5c4-8.1,4.1-17.8-8.1-15.2c-5.6,1.2-13.1,14.8-15.7,19.2c-7.6,12.7-22.4,45.2-22.4,45.2s10.3-22.4,21.5-22.4c15.5,0-9.4,22.4,4.7,22.4c4.9,0,11.7-11.4,16.6-20.9c7.5,4.7,19.7,1.7,24.5-8.1c10.1-20.4-14.4-12.8-24.5,8.1c-5.5,11.3-2.2,21.1,11.2,21.1c16.4,0,26.1-28.3,30.5-37.5c9.9,2.5,14,2.5,22.7-1.1c-3.5,5.1-24,38.1-8.3,38.1c6.7,0,11.7-11.4,16.6-20.9c7.5,4.7,19.7,1.7,24.5-8.1c10.1-20.4-14.4-12.8-24.5,8.1c-5.5,11.3-2.2,21.1,11.2,21.1c16.4,0,20.6-4,24.7-10.5"/>
<path stroke-linecap="round" stroke-linejoin="round" d="M157.3,300.8c3.8-2.3-29,0.8-35.6,3.2"/>
</g>
</svg>
obturateur.svg代碼：
[html] view plain copy
<svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="100%" height="200px" viewBox="0 0 200 200" enable-background="new 0 0 200 200">
<g stroke="#f60" fill="none" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" >
<circle cx="100" cy="100" r="90"/>
<circle cx="100" cy="100" r="85.74"/>
<circle cx="100" cy="100" r="72.947"/>
<circle cx="100" cy="100" r="39.74"/>
<line x1="34.042" y1="131.189" x2="67.047" y2="77.781"/>
<line x1="31.306" y1="75.416" x2="92.41" y2="60.987"/>
<line x1="68.81" y1="34.042" x2="122.219" y2="67.046"/>
<line x1="124.584" y1="31.305" x2="139.013" y2="92.409"/>
<line x1="165.957" y1="68.809" x2="132.953" y2="122.219"/>
<line x1="168.693" y1="124.584" x2="107.59" y2="139.012"/>
<line x1="131.19" y1="165.957" x2="77.781" y2="132.953"/>
<line x1="75.417" y1="168.693" x2="60.987" y2="107.59"/>
</g>
</svg>
polaroid.svg代碼：
[html] view plain copy
<svg id="polaroid" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 200 160" enable-background="new 0 0 200 160">
<g stroke="#f9f9f9" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10">
<!-- Case -->
<!-- The case items will be drawn at the same time (attribute `data-async` on each tag) with a custom duration of 40 frames (attribute `data-duration`). WARNING: When you want to draw a bloc asynchronously (like here), the last item need to be `data-async` free. Otherwise the following tags will also start at the same time. I know it's a bit confusing, play a bit with it and you'll see. -->
<path data-async="" data-duration="40" d="
M106.725,104.742c-0.773,2.498-3.586,4.229-6.285,3.867L12.473,96.802c-2.699-0.363-4.262-2.682-3.49-5.18l25.164-81.436
c0.771-2.496,3.584-4.229,6.283-3.866l87.966,11.808c2.699,0.362,4.264,2.68,3.49,5.179L106.725,104.742z"/>
<path data-async="" data-duration="40" d="
M101.02,123.207c-0.773,2.5-3.587,4.23-6.286,3.867L6.766,115.27c-2.699-0.363-4.26-2.682-3.488-5.182l2.91-9.417
c0.771-2.499,3.585-4.23,6.285-3.87l87.967,11.809c2.699,0.361,4.261,2.682,3.49,5.18L101.02,123.207z"/>
<line data-async="" data-duration="40" x1="103.377" y1="128.225" x2="154.768" y2="155.32"/>
<line data-async="" data-duration="40" x1="109.852" y1="112.684" x2="155.035" y2="136.906"/>
<path data-async="" data-duration="40" d="
M9.096,120.207l47.932,21.994c0,0,98.06,12.414,97.74,13.119c-0.318,0.709,5.426-16.205,5.426-16.205l-2.646-96.842
c-1.098-7.587-2.467-11.8-8.559-15.024l-12.635-6.604"/>
<path data-async="" data-duration="40" d="
M161.586,38.135l30.717,16.085c0,0,5.295,2.323,4.543,6.504l-3.215,10.527c-0.648,2.621-2.939,4.988-8.229,2.798l-9.154-4.701
l-11.834,56.441"/>
<path data-duration="40" d="
M183.148,49.518c0,0,5.295,2.324,4.543,6.506l-3.215,10.526c-0.648,2.622-2.938,4.988-8.229,2.798"/>
<!-- Lens -->
<!-- All item will be drawn line by line, with an exception for the first one, a little delay (attribute `data-delay) to make a break between the drawing of the case and the start of the lens part -->
<path data-delay="20" d="
M87.176,56.143C83.274,68.78,69.043,77.538,55.395,75.706S33.846,62.146,37.75,49.511c3.903-12.637,18.135-21.392,31.783-19.562
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<path d="
M92.745,56.891c-4.785,15.48-22.219,26.213-38.942,23.969C37.079,78.615,27.4,64.245,32.184,48.763
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<path d="
M78.99,26.933c16.169,7.426,19.398,10.989,22.026,20.105c1.283,4.449,1.271,9.411-0.3,14.489
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<path d="
M42.602,50.162c3.137-10.157,14.573-17.193,25.543-15.722"/>
<!-- Flash -->
<!-- This tag does not have any extra attribute. So it will start when the previous tag is finished. His duration and delay will be the one given in the options. -->
<path d="
M103.789,29.275c-0.568,1.841,0.582,3.549,2.57,3.818l12.807,1.72c1.988,0.266,4.062-1.012,4.633-2.851l1.66-5.38
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<!-- Output -->
<!-- Same case as Flash -->
<path d="
M11.129,105.791c-0.297,0.965,0.305,1.855,1.346,1.994l81.446,10.932c1.038,0.141,2.123-0.527,2.42-1.49l0,0
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<!-- Design (color lines on the front) -->
<!-- All the lines will start at the same time, because they all have the attribute `data-async` -->
<line data-async="" x1="47.583" y1="101.505" x2="51.561" y2="88.267"/>
<line data-async="" x1="53.391" y1="102.326" x2="57.047" y2="90.125"/>
<line data-async="" x1="59.224" y1="103.068" x2="62.749" y2="91.295"/>
<line data-async="" x1="65.057" y1="103.814" x2="69.015" y2="90.637"/>
<line data-async="" x1="72.87" y1="19.969" x2="75.497" y2="11.082"/>
<line data-async="" x1="78.512" y1="21.325" x2="81.317" y2="11.868"/>
<line data-async="" x1="83.833" y1="23.718" x2="87.16" y2="12.582"/>
<line data-async="" x1="89.145" y1="26.141" x2="92.939" y2="13.498"/>
</g>
</svg>
synth.svg代碼：
[html] view plain copy
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" id="Calque_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="378.995px" height="259.5px" viewBox="0 0 378.995 259.5" enable-background="new 0 0 378.995 259.5" xml:space="preserve">
<g id="Synth">
<path fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
M375.5,108.934c1.549,2.693,0.627,5.739-2.059,6.804L72.043,235.257c-2.685,1.064-6.116-0.254-7.665-2.946L5.362,129.69
c-1.548-2.692-0.625-5.737,2.059-6.802L308.818,3.369c2.686-1.065,6.117,0.254,7.666,2.946L375.5,108.934z"/>
<path fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="373.785" y1="112.765" x2="371.715" y2="130.65"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="70.318" y1="250.17" x2="371.715" y2="130.65"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.578" y1="22.078" x2="19.852" y2="140.935"/>
<polyline fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
19.852,140.935 72.387,232.284 70.318,250.17 "/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="371.715" y1="130.65" x2="365.053" y2="119.063"/>
<g id="octaves_1_">
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="93.572" y1="226.72" x2="73.09" y2="191.106"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="114.616" y1="218.126" x2="94.134" y2="182.512"/>
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="222.742" y1="175.497" x2="168.879" y2="81.838"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="244.27" y1="166.959" x2="223.789" y2="131.346"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="265.799" y1="158.423" x2="245.318" y2="122.809"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="287.328" y1="149.886" x2="233.463" y2="56.226"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="308.855" y1="141.349" x2="288.375" y2="105.734"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="330.385" y1="132.812" x2="309.902" y2="97.197"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="351.912" y1="124.274" x2="331.432" y2="88.66"/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="373.441" y1="115.737" x2="319.578" y2="22.078"/>
</g>
<g id="bemols_1_">
<g>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="69.077" y1="183.09" x2="68.222" y2="187.702"/>
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<g>
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<g>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="133.661" y1="157.479" x2="132.807" y2="162.091"/>
</g>
<g>
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<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="155.191" y1="148.94" x2="154.335" y2="153.554"/>
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<g>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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</g>
<g>
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<g>
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="241.305" y1="114.792" x2="240.449" y2="119.405"/>
</g>
<g>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="284.361" y1="97.718" x2="283.508" y2="102.33"/>
</g>
<g>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
304.24,96.906 272.055,40.941 276.52,39.151 280.988,37.363 313.053,84.02 313.174,93.328 "/>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
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<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="305.891" y1="89.181" x2="305.035" y2="93.794"/>
</g>
<g>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
325.768,88.369 293.582,32.404 298.049,30.614 302.518,28.825 334.58,75.482 334.703,84.791 "/>
<polygon fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="
327.641,78.262 294.957,33.093 302.947,29.894 334.58,75.482 "/>
<line fill="none" stroke="#241F20" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="327.418" y1="80.644" x2="326.562" y2="85.257"/>
</g>
</g>
</g>
</svg>
（vivus.min.js）CDN引用地址：http://cdn.jsdelivr.net/vivus/latest/vivus.min.js
vivus.js代碼：
[html] view plain copy
/**
* vivus - JavaScript library to make drawing animation on SVG
* @version v0.4.0
* @link https://github.com/maxwellito/vivus
* @license MIT
*/
'use strict';
(function (window, document) {
'use strict';
/**
* Pathformer
* Beta version
*
* Take any SVG version 1.1 and transform
* child elements to 'path' elements
*
* This code is purely forked from
* https://github.com/Waest/SVGPathConverter
*/
/**
* Class constructor
*
* @param {DOM|String} element Dom element of the SVG or id of it
*/
function Pathformer(element) {
// Test params
if (typeof element === 'undefined') {
throw new Error('Pathformer [constructor]: "element" parameter is required');
}
// Set the element
if (element.constructor === String) {
element = document.getElementById(element);
if (!element) {
throw new Error('Pathformer [constructor]: "element" parameter is not related to an existing ID');
}
}
if (element.constructor instanceof window.SVGElement || /^svg$/i.test(element.nodeName)) {
this.el = element;
} else {
throw new Error('Pathformer [constructor]: "element" parameter must be a string or a SVGelement');
}
// Start
this.scan(element);
}
/**
* List of tags which can be transformed
* to path elements
*
* @type {Array}
*/
Pathformer.prototype.TYPES = ['line', 'ellipse', 'circle', 'polygon', 'polyline', 'rect'];
/**
* List of attribute names which contain
* data. This array list them to check if
* they contain bad values, like percentage.
*
* @type {Array}
*/
Pathformer.prototype.ATTR_WATCH = ['cx', 'cy', 'points', 'r', 'rx', 'ry', 'x', 'x1', 'x2', 'y', 'y1', 'y2'];
/**
* Finds the elements compatible for transform
* and apply the liked method
*
* @param {object} options Object from the constructor
*/
Pathformer.prototype.scan = function (svg) {
var fn, element, pathData, pathDom,
elements = svg.querySelectorAll(this.TYPES.join(','));
for (var i = 0; i < elements.length; i++) {
element = elements[i];
fn = this[element.tagName.toLowerCase() + 'ToPath'];
pathData = fn(this.parseAttr(element.attributes));
pathDom = this.pathMaker(element, pathData);
element.parentNode.replaceChild(pathDom, element);
}
};
/**
* Read `line` element to extract and transform
* data, to make it ready for a `path` object.
*
* @param {DOMelement} element Line element to transform
* @return {object} Data for a `path` element
*/
Pathformer.prototype.lineToPath = function (element) {
var newElement = {},
x1 = element.x1 || 0,
y1 = element.y1 || 0,
x2 = element.x2 || 0,
y2 = element.y2 || 0;
newElement.d = 'M' + x1 + ',' + y1 + 'L' + x2 + ',' + y2;
return newElement;
};
/**
* Read `rect` element to extract and transform
* data, to make it ready for a `path` object.
* The radius-border is not taken in charge yet.
* (your help is more than welcomed)
*
* @param {DOMelement} element Rect element to transform
* @return {object} Data for a `path` element
*/
Pathformer.prototype.rectToPath = function (element) {
var newElement = {},
x = parseFloat(element.x) || 0,
y = parseFloat(element.y) || 0,
width = parseFloat(element.width) || 0,
height = parseFloat(element.height) || 0;
newElement.d = 'M' + x + ' ' + y + ' ';
newElement.d += 'L' + (x + width) + ' ' + y + ' ';
newElement.d += 'L' + (x + width) + ' ' + (y + height) + ' ';
newElement.d += 'L' + x + ' ' + (y + height) + ' Z';
return newElement;
};
/**
* Read `polyline` element to extract and transform
* data, to make it ready for a `path` object.
*
* @param {DOMelement} element Polyline element to transform
* @return {object} Data for a `path` element
*/
Pathformer.prototype.polylineToPath = function (element) {
var newElement = {},
points = element.points.trim().split(' '),
i, path;
// Reformatting if points are defined without commas
if (element.points.indexOf(',') === -1) {
var formattedPoints = [];
for (i = 0; i < points.length; i+=2) {
formattedPoints.push(points[i] + ',' + points[i+1]);
}
points = formattedPoints;
}
// Generate the path.d value
path = 'M' + points[0];
for(i = 1; i < points.length; i++) {
if (points[i].indexOf(',') !== -1) {
path += 'L' + points[i];
}
}
newElement.d = path;
return newElement;
};
/**
* Read `polygon` element to extract and transform
* data, to make it ready for a `path` object.
* This method rely on polylineToPath, because the
* logic is similar. The path created is just closed,
* so it needs an 'Z' at the end.
*
* @param {DOMelement} element Polygon element to transform
* @return {object} Data for a `path` element
*/
Pathformer.prototype.polygonToPath = function (element) {
var newElement = Pathformer.prototype.polylineToPath(element);
newElement.d += 'Z';
return newElement;
};
/**
* Read `ellipse` element to extract and transform
* data, to make it ready for a `path` object.
*
* @param {DOMelement} element ellipse element to transform
* @return {object} Data for a `path` element
*/
Pathformer.prototype.ellipseToPath = function (element) {
var newElement = {},
rx = parseFloat(element.rx) || 0,
ry = parseFloat(element.ry) || 0,
cx = parseFloat(element.cx) || 0,
cy = parseFloat(element.cy) || 0,
startX = cx - rx,
startY = cy,
endX = parseFloat(cx) + parseFloat(rx),
endY = cy;
newElement.d = 'M' + startX + ',' + startY +
'A' + rx + ',' + ry + ' 0,1,1 ' + endX + ',' + endY +
'A' + rx + ',' + ry + ' 0,1,1 ' + startX + ',' + endY;
return newElement;
};
/**
* Read `circle` element to extract and transform
* data, to make it ready for a `path` object.
*
* @param {DOMelement} element Circle element to transform
* @return {object} Data for a `path` element
*/
Pathformer.prototype.circleToPath = function (element) {
var newElement = {},
r = parseFloat(element.r) || 0,
cx = parseFloat(element.cx) || 0,
cy = parseFloat(element.cy) || 0,
startX = cx - r,
startY = cy,
endX = parseFloat(cx) + parseFloat(r),
endY = cy;
newElement.d = 'M' + startX + ',' + startY +
'A' + r + ',' + r + ' 0,1,1 ' + endX + ',' + endY +
'A' + r + ',' + r + ' 0,1,1 ' + startX + ',' + endY;
return newElement;
};
/**
* Create `path` elements form original element
* and prepared objects
*
* @param {DOMelement} element Original element to transform
* @param {object} pathData Path data (from `toPath` methods)
* @return {DOMelement} Path element
*/
Pathformer.prototype.pathMaker = function (element, pathData) {
var i, attr, pathTag = document.createElementNS('http://www.w3.org/2000/svg','path');
for(i = 0; i < element.attributes.length; i++) {
attr = element.attributes[i];
if (this.ATTR_WATCH.indexOf(attr.name) === -1) {
pathTag.setAttribute(attr.name, attr.value);
}
}
for(i in pathData) {
pathTag.setAttribute(i, pathData[i]);
}
return pathTag;
};
/**
* Parse attributes of a DOM element to
* get an object of attribute => value
*
* @param {NamedNodeMap} attributes Attributes object from DOM element to parse
* @return {object} Object of attributes
*/
Pathformer.prototype.parseAttr = function (element) {
var attr, output = {};
for (var i = 0; i < element.length; i++) {
attr = element[i];
// Check if no data attribute contains '%', or the transformation is impossible
if (this.ATTR_WATCH.indexOf(attr.name) !== -1 && attr.value.indexOf('%') !== -1) {
throw new Error('Pathformer [parseAttr]: a SVG shape got values in percentage. This cannot be transformed into \'path\' tags. Please use \'viewBox\'.');
}
output[attr.name] = attr.value;
}
return output;
};
'use strict';
var requestAnimFrame, cancelAnimFrame, parsePositiveInt;
/**
* Vivus
* Beta version
*
* Take any SVG and make the animation
* to give give the impression of live drawing
*
* This in more than just inspired from codrops
* At that point, it's a pure fork.
*/
/**
* Class constructor
* option structure
* type: 'delayed'|'sync'|'oneByOne'|'script' (to know if the items must be drawn synchronously or not, default: delayed)
* duration: <int> (in frames)
* start: 'inViewport'|'manual'|'autostart' (start automatically the animation, default: inViewport)
* delay: <int> (delay between the drawing of first and last path)
* dashGap <integer> whitespace extra margin between dashes
* pathTimingFunction <function> timing animation function for each path element of the SVG
* animTimingFunction <function> timing animation function for the complete SVG
* forceRender <boolean> force the browser to re-render all updated path items
* selfDestroy <boolean> removes all extra styling on the SVG, and leaves it as original
*
* The attribute 'type' is by default on 'delayed'.
* - 'delayed'
* all paths are draw at the same time but with a
* little delay between them before start
* - 'sync'
* all path are start and finish at the same time
* - 'oneByOne'
* only one path is draw at the time
* the end of the first one will trigger the draw
* of the next one
*
* All these values can be overwritten individually
* for each path item in the SVG
* The value of frames will always take the advantage of
* the duration value.
* If you fail somewhere, an error will be thrown.
* Good luck.
*
* @constructor
* @this {Vivus}
* @param {DOM|String} element Dom element of the SVG or id of it
* @param {Object} options Options about the animation
* @param {Function} callback Callback for the end of the animation
*/
function Vivus (element, options, callback) {
// Setup
this.isReady = false;
this.setElement(element, options);
this.setOptions(options);
this.setCallback(callback);
if (this.isReady) {
this.init();
}
}
/**
* Timing functions
**************************************
*
* Default functions to help developers.
* It always take a number as parameter (between 0 to 1) then
* return a number (between 0 and 1)
*/
Vivus.LINEAR = function (x) {return x;};
Vivus.EASE = function (x) {return -Math.cos(x * Math.PI) / 2 + 0.5;};
Vivus.EASE_OUT = function (x) {return 1 - Math.pow(1-x, 3);};
Vivus.EASE_IN = function (x) {return Math.pow(x, 3);};
Vivus.EASE_OUT_BOUNCE = function (x) {
var base = -Math.cos(x * (0.5 * Math.PI)) + 1,
rate = Math.pow(base,1.5),
rateR = Math.pow(1 - x, 2),
progress = -Math.abs(Math.cos(rate * (2.5 * Math.PI) )) + 1;
return (1- rateR) + (progress * rateR);
};
/**
* Setters
**************************************
*/
/**
* Check and set the element in the instance
* The method will not return anything, but will throw an
* error if the parameter is invalid
*
* @param {DOM|String} element SVG Dom element or id of it
*/
Vivus.prototype.setElement = function (element, options) {
// Basic check
if (typeof element === 'undefined') {
throw new Error('Vivus [constructor]: "element" parameter is required');
}
// Set the element
if (element.constructor === String) {
element = document.getElementById(element);
if (!element) {
throw new Error('Vivus [constructor]: "element" parameter is not related to an existing ID');
}
}
this.parentEl = element;
// Create the object element if the property `file` exists in the options object
if (options && options.file) {
var objElm = document.createElement('object');
objElm.setAttribute('type', 'image/svg+xml');
objElm.setAttribute('data', options.file);
objElm.setAttribute('built-by-vivus', 'true');
element.appendChild(objElm);
element = objElm;
}
switch (element.constructor) {
case window.SVGSVGElement:
case window.SVGElement:
this.el = element;
this.isReady = true;
break;
case window.HTMLObjectElement:
// If we have to wait for it
var onLoad, self;
self = this;
onLoad = function (e) {
if (self.isReady) {
return;
}
self.el = element.contentDocument && element.contentDocument.querySelector('svg');
if (!self.el && e) {
throw new Error('Vivus [constructor]: object loaded does not contain any SVG');
}
else if (self.el) {
if (element.getAttribute('built-by-vivus')) {
self.parentEl.insertBefore(self.el, element);
self.parentEl.removeChild(element);
self.el.setAttribute('width', '100%');
self.el.setAttribute('height', '100%');
}
self.isReady = true;
self.init();
return true;
}
};
if (!onLoad()) {
element.addEventListener('load', onLoad);
}
break;
default:
throw new Error('Vivus [constructor]: "element" parameter is not valid (or miss the "file" attribute)');
}
};
/**
* Set up user option to the instance
* The method will not return anything, but will throw an
* error if the parameter is invalid
*
* @param {object} options Object from the constructor
*/
Vivus.prototype.setOptions = function (options) {
var allowedTypes = ['delayed', 'sync', 'async', 'nsync', 'oneByOne', 'scenario', 'scenario-sync'];
var allowedStarts = ['inViewport', 'manual', 'autostart'];
// Basic check
if (options !== undefined && options.constructor !== Object) {
throw new Error('Vivus [constructor]: "options" parameter must be an object');
}
else {
options = options || {};
}
// Set the animation type
if (options.type && allowedTypes.indexOf(options.type) === -1) {
throw new Error('Vivus [constructor]: ' + options.type + ' is not an existing animation `type`');
}
else {
this.type = options.type || allowedTypes[0];
}
// Set the start type
if (options.start && allowedStarts.indexOf(options.start) === -1) {
throw new Error('Vivus [constructor]: ' + options.start + ' is not an existing `start` option');
}
else {
this.start = options.start || allowedStarts[0];
}
this.isIE = (window.navigator.userAgent.indexOf('MSIE') !== -1 || window.navigator.userAgent.indexOf('Trident/') !== -1 || window.navigator.userAgent.indexOf('Edge/') !== -1 );
this.duration = parsePositiveInt(options.duration, 120);
this.delay = parsePositiveInt(options.delay, null);
this.dashGap = parsePositiveInt(options.dashGap, 1);
this.forceRender = options.hasOwnProperty('forceRender') ? !!options.forceRender : this.isIE;
this.reverseStack = !!options.reverseStack;
this.selfDestroy = !!options.selfDestroy;
this.onReady = options.onReady;
this.map = [];
this.frameLength = this.currentFrame = this.delayUnit = this.speed = this.handle = null;
this.ignoreInvisible = options.hasOwnProperty('ignoreInvisible') ? !!options.ignoreInvisible : false;
this.animTimingFunction = options.animTimingFunction || Vivus.LINEAR;
this.pathTimingFunction = options.pathTimingFunction || Vivus.LINEAR;
if (this.delay >= this.duration) {
throw new Error('Vivus [constructor]: delay must be shorter than duration');
}
};
/**
* Set up callback to the instance
* The method will not return enything, but will throw an
* error if the parameter is invalid
*
* @param {Function} callback Callback for the animation end
*/
Vivus.prototype.setCallback = function (callback) {
// Basic check
if (!!callback && callback.constructor !== Function) {
throw new Error('Vivus [constructor]: "callback" parameter must be a function');
}
this.callback = callback || function () {};
};
/**
* Core
**************************************
*/
/**
* Map the svg, path by path.
* The method return nothing, it just fill the
* `map` array. Each item in this array represent
* a path element from the SVG, with informations for
* the animation.
*
* ```
* [
* {
* el: <DOMobj> the path element
* length: <number> length of the path line
* startAt: <number> time start of the path animation (in frames)
* duration: <number> path animation duration (in frames)
* },
* ...
* ]
* ```
*
*/
Vivus.prototype.mapping = function () {
var i, paths, path, pAttrs, pathObj, totalLength, lengthMeter, timePoint;
timePoint = totalLength = lengthMeter = 0;
paths = this.el.querySelectorAll('path');
for (i = 0; i < paths.length; i++) {
path = paths[i];
if (this.isInvisible(path)) {
continue;
}
pathObj = {
el: path,
length: Math.ceil(path.getTotalLength())
};
// Test if the path length is correct
if (isNaN(pathObj.length)) {
if (window.console && console.warn) {
console.warn('Vivus [mapping]: cannot retrieve a path element length', path);
}
continue;
}
this.map.push(pathObj);
path.style.strokeDasharray = pathObj.length + ' ' + (pathObj.length + this.dashGap * 2);
path.style.strokeDashoffset = pathObj.length + this.dashGap;
pathObj.length += this.dashGap;
totalLength += pathObj.length;
this.renderPath(i);
}
totalLength = totalLength === 0 ? 1 : totalLength;
this.delay = this.delay === null ? this.duration / 3 : this.delay;
this.delayUnit = this.delay / (paths.length > 1 ? paths.length - 1 : 1);
// Reverse stack if asked
if (this.reverseStack) {
this.map.reverse();
}
for (i = 0; i < this.map.length; i++) {
pathObj = this.map[i];
switch (this.type) {
case 'delayed':
pathObj.startAt = this.delayUnit * i;
pathObj.duration = this.duration - this.delay;
break;
case 'oneByOne':
pathObj.startAt = lengthMeter / totalLength * this.duration;
pathObj.duration = pathObj.length / totalLength * this.duration;
break;
case 'sync':
case 'async':
case 'nsync':
pathObj.startAt = 0;
pathObj.duration = this.duration;
break;
case 'scenario-sync':
path = pathObj.el;
pAttrs = this.parseAttr(path);
pathObj.startAt = timePoint + (parsePositiveInt(pAttrs['data-delay'], this.delayUnit) || 0);
pathObj.duration = parsePositiveInt(pAttrs['data-duration'], this.duration);
timePoint = pAttrs['data-async'] !== undefined ? pathObj.startAt : pathObj.startAt + pathObj.duration;
this.frameLength = Math.max(this.frameLength, (pathObj.startAt + pathObj.duration));
break;
case 'scenario':
path = pathObj.el;
pAttrs = this.parseAttr(path);
pathObj.startAt = parsePositiveInt(pAttrs['data-start'], this.delayUnit) || 0;
pathObj.duration = parsePositiveInt(pAttrs['data-duration'], this.duration);
this.frameLength = Math.max(this.frameLength, (pathObj.startAt + pathObj.duration));
break;
}
lengthMeter += pathObj.length;
this.frameLength = this.frameLength || this.duration;
}
};
/**
* Interval method to draw the SVG from current
* position of the animation. It update the value of
* `currentFrame` and re-trace the SVG.
*
* It use this.handle to store the requestAnimationFrame
* and clear it one the animation is stopped. So this
* attribute can be used to know if the animation is
* playing.
*
* Once the animation at the end, this method will
* trigger the Vivus callback.
*
*/
Vivus.prototype.drawer = function () {
var self = this;
this.currentFrame += this.speed;
if (this.currentFrame <= 0) {
this.stop();
this.reset();
} else if (this.currentFrame >= this.frameLength) {
this.stop();
this.currentFrame = this.frameLength;
this.trace();
if (this.selfDestroy) {
this.destroy();
}
} else {
this.trace();
this.handle = requestAnimFrame(function () {
self.drawer();
});
return;
}
this.callback(this);
if (this.instanceCallback) {
this.instanceCallback(this);
this.instanceCallback = null;
}
};
/**
* Draw the SVG at the current instant from the
* `currentFrame` value. Here is where most of the magic is.
* The trick is to use the `strokeDashoffset` style property.
*
* For optimisation reasons, a new property called `progress`
* is added in each item of `map`. This one contain the current
* progress of the path element. Only if the new value is different
* the new value will be applied to the DOM element. This
* method save a lot of resources to re-render the SVG. And could
* be improved if the animation couldn't be played forward.
*
*/
Vivus.prototype.trace = function () {
var i, progress, path, currentFrame;
currentFrame = this.animTimingFunction(this.currentFrame / this.frameLength) * this.frameLength;
for (i = 0; i < this.map.length; i++) {
path = this.map[i];
progress = (currentFrame - path.startAt) / path.duration;
progress = this.pathTimingFunction(Math.max(0, Math.min(1, progress)));
if (path.progress !== progress) {
path.progress = progress;
path.el.style.strokeDashoffset = Math.floor(path.length * (1 - progress));
this.renderPath(i);
}
}
};
/**
* Method forcing the browser to re-render a path element
* from it's index in the map. Depending on the `forceRender`
* value.
* The trick is to replace the path element by it's clone.
* This practice is not recommended because it's asking more
* ressources, too much DOM manupulation..
* but it's the only way to let the magic happen on IE.
* By default, this fallback is only applied on IE.
*
* @param {Number} index Path index
*/
Vivus.prototype.renderPath = function (index) {
if (this.forceRender && this.map && this.map[index]) {
var pathObj = this.map[index],
newPath = pathObj.el.cloneNode(true);
pathObj.el.parentNode.replaceChild(newPath, pathObj.el);
pathObj.el = newPath;
}
};
/**
* When the SVG object is loaded and ready,
* this method will continue the initialisation.
*
* This this mainly due to the case of passing an
* object tag in the constructor. It will wait
* the end of the loading to initialise.
*
*/
Vivus.prototype.init = function () {
// Set object variables
this.frameLength = 0;
this.currentFrame = 0;
this.map = [];
// Start
new Pathformer(this.el);
this.mapping();
this.starter();
if (this.onReady) {
this.onReady(this);
}
};
/**
* Trigger to start of the animation.
* Depending on the `start` value, a different script
* will be applied.
*
* If the `start` value is not valid, an error will be thrown.
* Even if technically, this is impossible.
*
*/
Vivus.prototype.starter = function () {
switch (this.start) {
case 'manual':
return;
case 'autostart':
this.play();
break;
case 'inViewport':
var self = this,
listener = function () {
if (self.isInViewport(self.parentEl, 1)) {
self.play();
window.removeEventListener('scroll', listener);
}
};
window.addEventListener('scroll', listener);
listener();
break;
}
};
/**
* Controls
**************************************
*/
/**
* Get the current status of the animation between
* three different states: 'start', 'progress', 'end'.
* @return {string} Instance status
*/
Vivus.prototype.getStatus = function () {
return this.currentFrame === 0 ? 'start' : this.currentFrame === this.frameLength ? 'end' : 'progress';
};
/**
* Reset the instance to the initial state : undraw
* Be careful, it just reset the animation, if you're
* playing the animation, this won't stop it. But just
* make it start from start.
*
*/
Vivus.prototype.reset = function () {
return this.setFrameProgress(0);
};
/**
* Set the instance to the final state : drawn
* Be careful, it just set the animation, if you're
* playing the animation on rewind, this won't stop it.
* But just make it start from the end.
*
*/
Vivus.prototype.finish = function () {
return this.setFrameProgress(1);
};
/**
* Set the level of progress of the drawing.
*
* @param {number} progress Level of progress to set
*/
Vivus.prototype.setFrameProgress = function (progress) {
progress = Math.min(1, Math.max(0, progress));
this.currentFrame = Math.round(this.frameLength * progress);
this.trace();
return this;
};
/**
* Play the animation at the desired speed.
* Speed must be a valid number (no zero).
* By default, the speed value is 1.
* But a negative value is accepted to go forward.
*
* And works with float too.
* But don't forget we are in JavaScript, se be nice
* with him and give him a 1/2^x value.
*
* @param {number} speed Animation speed [optional]
*/
Vivus.prototype.play = function (speed, callback) {
this.instanceCallback = null;
if (speed && typeof speed === 'function') {
this.instanceCallback = speed; // first parameter is actually the callback function
speed = null;
}
else if (speed && typeof speed !== 'number') {
throw new Error('Vivus [play]: invalid speed');
}
// if the first parameter wasn't the callback, check if the seconds was
if (callback && typeof(callback) === 'function' && !this.instanceCallback) {
this.instanceCallback = callback;
}
this.speed = speed || 1;
if (!this.handle) {
this.drawer();
}
return this;
};
/**
* Stop the current animation, if on progress.
* Should not trigger any error.
*
*/
Vivus.prototype.stop = function () {
if (this.handle) {
cancelAnimFrame(this.handle);
this.handle = null;
}
return this;
};
/**
* Destroy the instance.
* Remove all bad styling attributes on all
* path tags
*
*/
Vivus.prototype.destroy = function () {
this.stop();
var i, path;
for (i = 0; i < this.map.length; i++) {
path = this.map[i];
path.el.style.strokeDashoffset = null;
path.el.style.strokeDasharray = null;
this.renderPath(i);
}
};
/**
* Utils methods
* include methods from Codrops
**************************************
*/
/**
* Method to best guess if a path should added into
* the animation or not.
*
* 1. Use the `data-vivus-ignore` attribute if set
* 2. Check if the instance must ignore invisible paths
* 3. Check if the path is visible
*
* For now the visibility checking is unstable.
* It will be used for a beta phase.
*
* Other improvments are planned. Like detecting
* is the path got a stroke or a valid opacity.
*/
Vivus.prototype.isInvisible = function (el) {
var rect,
ignoreAttr = el.getAttribute('data-ignore');
if (ignoreAttr !== null) {
return ignoreAttr !== 'false';
}
if (this.ignoreInvisible) {
rect = el.getBoundingClientRect();
return !rect.width && !rect.height;
}
else {
return false;
}
};
/**
* Parse attributes of a DOM element to
* get an object of {attributeName => attributeValue}
*
* @param {object} element DOM element to parse
* @return {object} Object of attributes
*/
Vivus.prototype.parseAttr = function (element) {
var attr, output = {};
if (element && element.attributes) {
for (var i = 0; i < element.attributes.length; i++) {
attr = element.attributes[i];
output[attr.name] = attr.value;
}
}
return output;
};
/**
* Reply if an element is in the page viewport
*
* @param {object} el Element to observe
* @param {number} h Percentage of height
* @return {boolean}
*/
Vivus.prototype.isInViewport = function (el, h) {
var scrolled = this.scrollY(),
viewed = scrolled + this.getViewportH(),
elBCR = el.getBoundingClientRect(),
elHeight = elBCR.height,
elTop = scrolled + elBCR.top,
elBottom = elTop + elHeight;
// if 0, the element is considered in the viewport as soon as it enters.
// if 1, the element is considered in the viewport only when it's fully inside
// value in percentage (1 >= h >= 0)
h = h || 0;
return (elTop + elHeight * h) <= viewed && (elBottom) >= scrolled;
};
/**
* Alias for document element
*
* @type {DOMelement}
*/
Vivus.prototype.docElem = window.document.documentElement;
/**
* Get the viewport height in pixels
*
* @return {integer} Viewport height
*/
Vivus.prototype.getViewportH = function () {
var client = this.docElem.clientHeight,
inner = window.innerHeight;
if (client < inner) {
return inner;
}
else {
return client;
}
};
/**
* Get the page Y offset
*
* @return {integer} Page Y offset
*/
Vivus.prototype.scrollY = function () {
return window.pageYOffset || this.docElem.scrollTop;
};
/**
* Alias for `requestAnimationFrame` or
* `setTimeout` function for deprecated browsers.
*
*/
requestAnimFrame = (function () {
return (
window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function(/* function */ callback){
return window.setTimeout(callback, 1000 / 60);
}
);
})();
/**
* Alias for `cancelAnimationFrame` or
* `cancelTimeout` function for deprecated browsers.
*
*/
cancelAnimFrame = (function () {
return (
window.cancelAnimationFrame ||
window.webkitCancelAnimationFrame ||
window.mozCancelAnimationFrame ||
window.oCancelAnimationFrame ||
window.msCancelAnimationFrame ||
function(id){
return window.clearTimeout(id);
}
);
})();
/**
* Parse string to integer.
* If the number is not positive or null
* the method will return the default value
* or 0 if undefined
*
* @param {string} value String to parse
* @param {*} defaultValue Value to return if the result parsed is invalid
* @return {number}
*
*/
parsePositiveInt = function (value, defaultValue) {
var output = parseInt(value, 10);
return (output >= 0) ? output : defaultValue;
};
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define([], function() {
return Vivus;
});
} else if (typeof exports === 'object') {
// Node. Does not work with strict CommonJS, but
// only CommonJS-like environments that support module.exports,
// like Node.
module.exports = Vivus;
} else {
// Browser globals
window.Vivus = Vivus;
}
}(window, document));感謝各位的閱讀！關于“SVG動畫vivus.js庫怎么用”這篇文章就分享到這里了，希望以上內容可以對大家有一定的幫助，讓大家可以學到更多知識，如果覺得文章不錯，可以把它分享出去讓更多的人看到吧！
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