SVG Solar System: Orbit of Planets

A pure SVG Solar System with CSS animated Orbit of Planets

Demo: Online Test

https://treedbox.github.io/solar-system-orbit-planets/

How it works

HTML: Using SVG to draw groups of circles:

<g class="earth-group">
  <circle class="earth-limit" cx="50%" cy="50%" r="590"/>
  <circle class="moon-orbit" cx="50%" cy="50%" r="500"/>
  <g class="moon-group">
    <circle class="moon" cx="50%" cy="50%" r="50"/>
    <circle class="moon-shadow" cx="50%" cy="50%" r="50"/>
  </g>
  <circle class="earth" cx="50%" cy="50%" r="400"/>
  <circle class="shadow" cx="50%" cy="50%" r="400"/>
</g>

Set SVG Radial and Linear Gradient

SVG: Radial Gradient with an id:

<radialGradient id="sun">
  <stop offset="30%" stop-color="yellow"/>
  <stop offset="100%" stop-color="orange"/>
</radialGradient>

SVG: Linear Gradient with an id:

<linearGradient id="saturn" x1="0" x2="0" y1="0" y2="100%">
  <stop offset="0%"   stop-color="#ec9a22"/>
  <stop offset="40%"  stop-color="#d16c10"/>
  <stop offset="55%"  stop-color="#d16c10"/>
  <stop offset="50%"  stop-color="#ec9925"/>
  <stop offset="70%"  stop-color="#ec9925"/>
  <stop offset="75%"  stop-color="#d07b15"/>
  <stop offset="100%" stop-color="#ec9a22"/>
</linearGradient>

CSS: Use id to apply Gradients with fill:

.sun {
  fill:url(#sun);
  transform: rotate(10deg);
  transform-origin: center;
}

CSS: Set animation to call @keyframes:

.earth-group{
  transform-origin: center;
  animation: earth-group 13s linear infinite;
}

CSS: Use transform rotate and translate to simulate orbits of the Planets positioning planet from the center (defined in transform-origin):

@keyframes earth-group {
	0%{
		transform: rotate(0deg) translate(3100px);
	}
	100%{
		transform: rotate(-360deg) translate(3100px);
	}
}

Tested

Google Chrome 59

Firefox 53.0.3, 54.0

Works with or wihout a server

Meta

Front-End Developer: Jonimar Marques Policarpo

Twitter: @treedbox

E-mail: treedbox@gmail.com

Site: treedbox

License

MIT © TreedBox

https://github.com/treedbox/solar-system-orbit-planets