Can an animation be created that transforms an SVG line into a flawless circle?

Question

Can an animation be created that transforms an SVG line into a flawless circle?

Is there a way to create an animation that starts with an SVG line and gradually widens from the center to form a perfect circle?

I've been researching this, but haven't found a solution that meets my needs. It could be because of the keywords I'm using or some other reason.

Here is the code for my line:

<svg height="210" width="500">
  <line x1="150" y1="150" x2="50" y2="150" style="stroke:rgb(255,0,0); stroke-width:2" />
</svg>

… and the animation I'm trying to achieve should look like this:

html css svg

Answer 1

Answer №1

If you want to achieve this effect using only CSS, here's how you can do it:

.container {
  width:250px;
  height:4px;
  background:radial-gradient(circle,#000 99px,transparent 100px);
    
  animation:transformHeight 5s linear 1s forwards;
}
@keyframes transformHeight {
  to {
    height:200px;
  }
}

body {
  margin:0;
  height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
}

<div class="container">

</div>

Answer 2

If you want to achieve this effect using only CSS, here's how you can do it:

.container {
  width:250px;
  height:4px;
  background:radial-gradient(circle,#000 99px,transparent 100px);
    
  animation:transformHeight 5s linear 1s forwards;
}
@keyframes transformHeight {
  to {
    height:200px;
  }
}

body {
  margin:0;
  height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
}

<div class="container">

</div>

Answer 3

Answer №2

There is a creative way to transition an SVG ellipse from a straight line to a perfect circle:

svg {
  background-color: #fff;
}

ellipse {
  background:radial-gradient(circle,#000 99px,transparent 100px);
  animation:toCircle 1s linear 1s forwards;
}

@keyframes toCircle{
  to {
    ry:50;
  }
}

<svg width="700" height="500">
<ellipse cx="100" cy="100" rx="50" ry="0.1"/>
</svg>

Answer 4

There is a creative way to transition an SVG ellipse from a straight line to a perfect circle:

svg {
  background-color: #fff;
}

ellipse {
  background:radial-gradient(circle,#000 99px,transparent 100px);
  animation:toCircle 1s linear 1s forwards;
}

@keyframes toCircle{
  to {
    ry:50;
  }
}

<svg width="700" height="500">
<ellipse cx="100" cy="100" rx="50" ry="0.1"/>
</svg>

Can an animation be created that transforms an SVG line into a flawless circle?

Answer №1

Answer №2

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