Generate background pattern in Ruby

We will see how to generate a SVG background with triangle patterns in ruby to
have something that look likes this:

At first, install the TrianglePattern gem:

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$ gem install triangle_pattern

Then we only need a very short script with some simple options:

  • an array of color (a gradient preferably) that we can generate with a website like https://cssgradient.io/
  • the width and height of the image
  • cell_size: size of the mesh used to generate triangles
  • variance: amount of randomness used when generating triangles
  • seed: seed of the random generator
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require 'triangle_pattern'

pattern = TrianglePattern.generate(
colors: ['#020024', '#6c1678', '#ff6400'],
width: 1920,
height: 1080,
cell_size: 45,
variance: 0.80,
seed: 1337
)

File.open('background.svg', 'w') { |f| f.write(pattern.to_svg) }
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