SVG - animate/move dots along path

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I'm looking for a way to move dots along existing path in order to get animation that looks like this:
enter image description here

I was thinking about working with dasharray but wasn't able to get this exact behavior.

Here is an example of something I tried, but as you can see it doesn't really work:

path.link {
  stroke-width: 3px;
  stroke-dasharray: 5 5;
  stroke: black;
}
path.link-anim {
  stroke-width: 3px;
  animation: link-anim 5s linear infinite;
}
path.red {
  stroke: red;
}
path.blue {
  stroke: blue;
}
path.green {
  stroke: green;
}
path.pink {
  stroke: pink;
}
@keyframes link-anim {
    0% {
        stroke-dashoffset: 0;
        stroke-dasharray: 5 5 100%;
    }
    100% {
        stroke-dashoffset: 100%;
        stroke-dasharray: 100% 5 5;
    }
}
<svg width="450" height="450">
  <g>
    <path class="link" d="M10,10L100,10"></path>
    <path class="link-anim red" d="M10,10L100,10"></path>
  </g>
  <g>
    <path class="link" d="M50,50L200,50"></path>
    <path class="link-anim blue" d="M50,50L200,50"></path>
  </g>
  <g>
    <path class="link" d="M75,75L75,200"></path>
    <path class="link-anim green" d="M75,75L75,200"></path>
  </g>
  <g>
    <path class="link" d="M85,85L450,450"></path>
    <path class="link-anim pink" d="M85,85L450,450"></path>
  </g>
</svg>

Note - the angle of the line is not something I care about. I should have written this from the start. What I need is the 3 dots to move forward (and only those 3 dots).

5 Answers
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