SVG路径动画
SVG路径动画,先用
一、利用svg属性
path可以看作一条虚线绘制的路径,有两个属性可以定义虚线的样式以及虚线间偏移距离。
stroke-dasharray
: 样式,可以设置虚线线段的长度和线段的间距。
stroke-dashoffset
:偏移值。
轨迹动画就是定义出虚线,然后关键帧控制偏移值改变,从而达到轨迹运动。
代码如下:
<!doctype html>
<html>
<head>
<title>SVG Animate</title>
</head>
<style>
body {
100vw;
height: 100vh;
position: relative;
}
svg {
100%;
height: 100%;
}
.move {
stroke-dasharray: 16 100%;
stroke-dashoffset: 320;
animation: move 1.5s linear normal infinite;
}
@keyframes move {
from {
stroke-dashoffset: 104%;
stroke: #00f;
}
to {
stroke-dashoffset: 65%;
stroke: #f00;
}
}
</style>
<body>
<svg version="1.1">
<path fill="none" stroke="#eee" stroke-width="4" d="M 366,495 C 694.1,544.5 567.9,445.5 896,495"></path>
<path fill="none" stroke="#f00" stroke-width="4" d="M 366,495 C 694.1,544.5 567.9,445.5 896,495" class="move"></path>
</svg>
</body>
</html>
二、使用标签偏移属性
标签有offset-path
、offset-distance
两个属性。一个定义该标签偏移路径,一个定义偏移距离。
该方案与svg属性类似,用关键帧控制路径偏移,达到动画效果
<!doctype html>
<html>
<head>
<title>SVG Animate</title>
</head>
<style>
body {
100vw;
height: 100vh;
position: relative;
}
svg {
100%;
height: 100%;
}
.move {
stroke-dasharray: 16 100%;
stroke-dashoffset: 320;
animation: move 1.5s linear normal infinite;
}
@keyframes move {
from {
stroke-dashoffset: 104%;
stroke: #00f;
}
to {
stroke-dashoffset: 65%;
stroke: #f00;
}
}
#run {
16px;
height: 16px;
top: 0;
left: 0;
position: absolute;
border-radius: 50%;
background: #4a90e2;
offset-path: path('M 366,495 C 694.1,544.5 567.9,445.5 896,495');
offset-distance: 0%;
animation: run 3s ease-in-out alternate infinite;
}
@keyframes run {
from {
offset-distance: 100%;
}
to {
offset-distance: 0%;
}
}
</style>
<body>
<svg version="1.1">
<path fill="none" stroke="#eee" stroke-width="4" d="M 366,495 C 694.1,544.5 567.9,445.5 896,495"></path>
<path fill="none" stroke="#f00" stroke-width="4" d="M 366,495 C 694.1,544.5 567.9,445.5 896,495" class="move"></path>
</svg>
<div id="run"></div>
</body>
</html>