SVG元素绕圆旋转 [英] SVG element rotate on circle
问题描述
所以我有一个SVG元素-大圆圈-里面有一组元素。
So I have a SVG element - big circle - and group of elements inside .
我想围绕这个大圆圈旋转这些元素。代码非常简单,但是我已经迷失了如何在正确的路径(大圆圈)上设置此圆圈(graph__skils)。正如您在下面的链接中看到的那样,小圆圈在大圆圈上旋转不正确。请帮助
I would like to rotate this elements around this big circle. The code is very simply, but I'm already freaking out how to set this circle (graph__skils) on correct path (big circle). As you can see on link below this small circle isn't rotating correct on the big circle. Please help
HTML文件
<section class="graph">
<svg xmlns="http://www.w3.org/2000/svg"
width="670"
height="696"
viewBox="0 0 670 696">
<g>
<g class="graph__middle">
<path fill="#3f9" d="M345 264c34.794 0 63 28.206 63 63s-28.206 63-63 63-63-28.206-63-63 28.206-63 63-63z"/>
</g>
<g class="graph__design" >
<g class="graph_mainCircle">
<path fill="none" stroke="#cf9" stroke- linecap="round" stroke-linejoin="round" stroke-miterlimit="50" d="M345 197c71.797 0 130 58.203 130 130s-58.203 130-130 130-130-58.203-130-130 58.203-130 130-130z"/>
</g>
<g class="graph__skills">
<g class="graph__middle">
<path fill="#cf9" d="M445.053 387c11.052 0 20.012 8.954 20.012 20s-8.96 20-20.012 20-20.012-8.954-20.012-20 8.96-20 20.012-20z"/>
</g>
</g>
</g>
</g>
</svg>
SCSS文件
.graph {
position: relative;
width:500px;
height:500px;
svg {
position: relative;
border: 2px solid blue;
width: 99%;
height: 99%;
}
&__design {
position: relative;
}
&__skills {
transform-origin: center;
position: absolute;
animation: mercury-group 18s linear infinite;
}
&__middle {
position: relative;
}
}
@keyframes mercury-group {
0% {
transform: rotateZ(0deg);
}
100% {
transform: rotateZ(-360deg);
}
}
推荐答案
svg元素的中心不是行星的中心。您需要将 transform-origin
更改为 345px 328px
。为了计算新的中心,我对 graph__middle
The center of the svg element is not the center of your planets. You will need to change the transform-origin
to 345px 328px
. In order to calculate the new center I've used the getBBox() method for the graph__middle
.graph {
position: relative;
width: 500px;
height: 500px;
}
.graph svg {
position: relative;
border: 2px solid blue;
width: 99%;
height: 99%;
}
.graph__design {
position: relative;
}
.graph__skills {
transform-origin: 345px 328px;
position: absolute;
animation: mercury-group 18s linear infinite;
}
.graph__middle {
position: relative;
}
@keyframes mercury-group {
0% {
transform: rotateZ(0deg);
}
100% {
transform: rotateZ(-360deg);
}
}
<section class="graph">
<svg xmlns="http://www.w3.org/2000/svg"
width="670"
height="696"
viewBox="0 0 670 696">
<g>
<g class="graph__middle" id="KK">
<path fill="red" d="M345 264c34.794 0 63 28.206 63 63s-28.206 63-63 63-63-28.206-63-63 28.206-63 63-63z"/>
</g>
<g class="graph__design" >
<g class="graph_mainCircle">
<path fill="none" stroke="black" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="50" d="M345 197c71.797 0 130 58.203 130 130s-58.203 130-130 130-130-58.203-130-130 58.203-130 130-130z"/>
</g>
<g class="graph__skills">
<g class="graph__middle">
<path d="M445.053 387c11.052 0 20.012 8.954 20.012 20s-8.96 20-20.012 20-20.012-8.954-20.012-20 8.96-20 20.012-20z"/>
</g>
</g>
</g>
</g>
<circle cx="345" cy="328" r="3" />
</svg>
</section>
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