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html - 如何更改 SVG 图像中 stroke-dasharray 的 "starting point"?

转载 作者:可可西里 更新时间:2023-11-01 14:48:26 24 4
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我想为自定义 Logo 制作动画,就像典型的进度圈(例如百分比)。因此,我用描边创建了一个圆圈,并设置了一个指向 svg Logo 的剪辑路径。

我快完成了,但我需要将笔划动画的起点从左侧(参见代码)更改为顶部 - 或箭头旁边。这样进度就从其中一个箭头开始。 stroke-dasharray 和 stroke-dashoffset 的不同值将不起作用。

<html>
<head>
<title></title>
<style type="text/css">
path.progress-logo {
stroke-dasharray: 204.243;
stroke-dashoffset: 122.763;
}
</style>
</head>
<body>
<svg id="svg2">

<path fill="#E2E2E1" d="M100,39.414L81.975,21.982L63.89,39.414h9.86v30.97H17.164V23.659h42.563l-0.033,11.304l18.028-17.729
L59.799-0.28l-0.031,10.737H18.281c-7.164,0-12.001,1.232-14.512,3.702C1.257,16.627,0,21.212,0,27.917v38.904
c0,6.752,1.257,11.35,3.768,13.794c2.511,2.443,7.348,3.665,14.512,3.665h54.283c7.165,0,12.003-1.222,14.514-3.665
c2.511-2.444,3.769-7.042,3.769-13.794V39.414H100z"/>

<defs>
<clipPath id="cut-off-bottom">
<path fill="#E2E2E1" d="M100,39.414L81.975,21.982L63.89,39.414h9.86v30.97H17.164V23.659h42.563l-0.033,11.304l18.028-17.729
L59.799-0.28l-0.031,10.737H18.281c-7.164,0-12.001,1.232-14.512,3.702C1.257,16.627,0,21.212,0,27.917v38.904
c0,6.752,1.257,11.35,3.768,13.794c2.511,2.443,7.348,3.665,14.512,3.665h54.283c7.165,0,12.003-1.222,14.514-3.665
c2.511-2.444,3.769-7.042,3.769-13.794V39.414H100z"/>
</clipPath>
</defs>
<path class="progress-logo" d="m0.66666,46.55556c0,-22.98956 18.62155,-41.61111 41.61111,-41.61111c22.98957,0 41.61111,18.62155 41.61111,41.61111c0,22.98956 -18.62154,41.61111 -41.61111,41.61111c-22.98956,0 -41.61111,-18.62155 -41.61111,-41.61111z" clip-path="url(#cut-off-bottom)" stroke-width="40" fill="none" stroke="#1ECD97" />



</svg>

</body>
</html>

这是我当前的代码:http://jsfiddle.net/w5huatyf/

感谢您的帮助!

最佳答案

你的答案在这里:

http://jsfiddle.net/w5huatyf/2/

function polarToCartesian(centerX, centerY, radius, angleInDegrees) {
var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0;

return {
x: centerX + (radius * Math.cos(angleInRadians)),
y: centerY + (radius * Math.sin(angleInRadians))
};
}

function describeArc(x, y, radius, startAngle, endAngle){

var start = polarToCartesian(x, y, radius, endAngle);
var end = polarToCartesian(x, y, radius, startAngle);

var arcSweep = endAngle - startAngle <= 180 ? "0" : "1";

var d = [
"M", start.x, start.y,
"A", radius, radius, 0, arcSweep, 0, end.x, end.y,
"L", x,y,
"L", start.x, start.y
].join(" ");

return d;
}

var percent = 0;
var startValue = 43;
var endValue = 360+startValue-0.01;
function count(){
if(percent < startValue)
percent = startValue;
else
percent++;
if(percent > endValue)
percent = endValue;
document.getElementById("arc1").setAttribute("d", describeArc(50, 50, 60, startValue, percent));
document.getElementById("vals").innerHTML = percent + ' Degree';
if(percent < endValue)
window.setTimeout(function() { count(); }, 30);
}

window.setTimeout(function() { count( ); }, 30);

count(0,359);

这是一个简单的计时器,每次使用计时器替换弧值。

我使用了其他一些答案。这里有一些:

计时器:https://stackoverflow.com/a/33676171/2655623(我自己回答的)

画饼:https://stackoverflow.com/a/24569190/2655623(结果对我没用,但是函数有用)

如果您需要帮助解释代码,请告诉我。

关于html - 如何更改 SVG 图像中 stroke-dasharray 的 "starting point"?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25189416/

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