I have created the SVG infinity animation but it's not working smoothly, It's stuck in the middle and then flow off. Settled nodes in Illustrator in SVG but after that I have facing same issue. Can anybody review the code and help me Please?
.svg-main {
width: 700px;
margin: 30px auto;
position: relative;
}
svg#svga {
position: absolute;
top: 0;
left: auto;
bottom: auto;
right: auto;
}
.sd1{fill:none;stroke:#000000; stroke-width:6;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;}
.circ{fill:#000000; }
.st0{fill:#cccccc;}
.st1{fill:#cccccc;}
.st2{fill:none;stroke:#cccccc;stroke-width:6;stroke-miterlimit:10;}<div class="svg-main">
<svg version="1.1" id="svga" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="300px" height="200px" viewBox="0 0 685 310" style="enable-background:new 0 0 671.1 304.4;" xml:space="preserve"
>
<g class="svg-col">
<path class="sd1" id="loop-normal" d="M343.6,156.5c11,15.9,104.6,147.2,181.9,147.6c0.1,0,0.8,0,1,0c82.1-0.3,148.6-67,148.6-149.2
c0-82.4-66.8-149.2-149.2-149.2c-77.2,0-170.8,131-182.2,147.5c-0.8,1.1-1.6,2.3-2.1,3.1c-10.6,15.3-104.8,147.8-182.4,147.8
C76.7,304.2,9.9,237.4,9.9,155S76.7,5.8,159.1,5.8c77.2,0,170.7,130.9,182.2,147.5C342.1,154.4,342.9,155.6,343.6,156.5z"/>
<animate attributeName="stroke-dasharray" attributeType="XML"
from="1900, 1700" to="200 1700"
begin="0s" dur="3s"
repeatCount="indefinite"/>
<animate attributeName="stroke-dashoffset" attributeType="XML"
from="-1700" to="-3600"
begin="0s" dur="3s"
repeatCount="indefinite"/>
</path>
<circle id="plug" class="circ" cx="0" cy="0" r="7"/>
<animateMotion
xlink:href="#plug"
dur="3s"
rotate="auto"
repeatCount="indefinite"
calcMode="linear"
keyTimes="0;1"
keySplines="0.42, 0, 0.58, 1">
<mpath xlink:href="#loop-normal"/>
</animateMotion>
</g>
</svg>
<!-- Generator: Adobe Illustrator 22.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<svg version="1.1" id="svg-bg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="300px" height="200px" viewBox="0 0 685 310" style="enable-background:new 0 0 685 310;" xml:space="preserve">
<path class="st2" d="M159.1,5.8C76.7,5.8,9.9,72.6,9.9,155s66.8,149.2,149.2,149.2S342.5,155,342.5,155S241.5,5.8,159.1,5.8z
M525.9,5.8C443.5,5.8,342.5,155,342.5,155s101,149.2,183.4,149.2S675.1,237.4,675.1,155S608.3,5.8,525.9,5.8z"/>
</svg>
</div>The first precondition to get a fluent movement with stroke-dashoffset animations is to know the length of the path with appropriate precision:
document.querySelector('#loop-normal').getTotalLength() // approx. 1910
stroke-dasharray. Instead divide the total length fo the path statically into one dash and one gap: stroke-dasharray="200 1710". (Any other proportion will work as long as the sum equals 1910.)<animateMotion> is lacking the keyPoints attribute. Set it to "0;1"calcMode="spline". Leave it of.The rest is a bit of a simplification: define the path only once, and position both the background and animated use in the same SVG; name the correct path length in the stroke-dashoffset animation to ensure smooth movement; remove unused CSS.
.svg-main {
width: 700px;
margin: 30px auto;
position: relative;
}
svg#svga {
position: absolute;
top: 0;
left: auto;
bottom: auto;
right: auto;
}
.st2{fill:none;stroke:#cccccc;stroke-width:6;}
.sd1{fill:none;stroke:#000000; stroke-width:6;stroke-linecap:round;}
.circ{fill:#000000; }<div class="svg-main">
<svg id="svga" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
width="300px" height="200px" viewBox="0 0 685 310">
<g class="st2">
<path id="loop-normal" d="M343.6,156.5c11,15.9,104.6,147.2,181.9,147.6c0.1,0,0.8,0,1,0c82.1-0.3,148.6-67,148.6-149.2
c0-82.4-66.8-149.2-149.2-149.2c-77.2,0-170.8,131-182.2,147.5c-0.8,1.1-1.6,2.3-2.1,3.1c-10.6,15.3-104.8,147.8-182.4,147.8
C76.7,304.2,9.9,237.4,9.9,155S76.7,5.8,159.1,5.8c77.2,0,170.7,130.9,182.2,147.5C342.1,154.4,342.9,155.6,343.6,156.5z"/>
</g>
<use class="sd1" stroke-dasharray="200 1710" xlink:href="#loop-normal">
<animate attributeName="stroke-dashoffset"
from="200" to="-1710"
begin="0s" dur="3s"
repeatCount="indefinite"/>
</use>
<circle id="plug" class="circ" cx="0" cy="0" r="7"/>
<animateMotion
xlink:href="#plug"
dur="3s"
rotate="auto"
repeatCount="indefinite"
calcMode="linear"
keyTimes="0;1"
keyPoints="0;1">
<mpath xlink:href="#loop-normal"/>
</animateMotion>
</svg>
</div>