Simple scala library for generating identicons - visual hashes for arbitrary string.

• Take a string as an input
• Generate hash
• Use the hash as a random seed
• Randomly choose the layout, by default combine from 1 to 3 random basic layout
• Fill the layout with randomly selected shapes
• Generate 2D image

The most basic use case is covered by the defaultInstance.

import net.michalp.identicon4s.Identicon
val identicon = Identicon.defaultInstance[Id]()

val image = identicon.generate("test")
val f = new File(s"test.png");
ImageIO.write(image, "png", f)

Resulting image

Identicon is configurable. You can tune the amount of layout selection iterations and turn on the coloring.

val config = Identicon.Config(
  minLayoutIterations = 5,
  maxLayoutIterations = 10,
  renderMonochromatic = false
)
import net.michalp.identicon4s.Identicon
val identicon = Identicon.defaultInstance[Id](config)

val image = identicon.generate("test")
val f = new File(s"test.png");
ImageIO.write(image, "png", f)

Resulting image

There's also def instance[F[_]: Hashing: Functor](config: Config) method that allows you to instantiate Identicon with custom your own implementation of Hashing.