https://github.com/samdvr/l-system

https://github.com/samdvr/l-system

Last synced: about 1 year ago
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• Host: GitHub
• URL: https://github.com/samdvr/l-system
• Owner: samdvr
• Created: 2019-04-14T15:38:25.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2019-04-17T15:59:09.000Z (about 7 years ago)
• Last Synced: 2025-02-03T08:01:40.597Z (over 1 year ago)
• Language: Scala
• Size: 6.67 MB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# L-System

[L-System](https://en.wikipedia.org/wiki/L-system)

Image generator using [Doodle library](https://github.com/creativescala/doodle).

Example generated images are in [here](https://github.com/samdvr/L-System/tree/master/examples).

Sample Language and Interpreter

```scala

import algebra._

import doodle.turtle._

import doodle.turtle.Instruction._

import doodle.syntax._

import Draw._

object Implicits {

  object Generator extends SequenceGenerator[Language]

  implicit val rule: ProductionRule[Language] = {

    case A => List(B, TurnLeft, A, TurnLeft, B)

    case B => List(A, TurnRight, B, TurnRight, A)

    case TurnLeft => List(TurnLeft)

    case TurnRight => List(TurnRight)

  }

  implicit val drawer: Drawer[Language] = new Drawer[Language] {

    override def convert: List[Language] => List[Instruction] = _.flatMap {

      case A => List(forward(5))

      case B => List(forward(5))

      case TurnLeft => List(turn(-60.degrees))

      case TurnRight => List(turn(60.degrees))

    }

  }

}

object Runner extends App {

  override def main(args: Array[String]): Unit = {

    import Implicits._

    val data = Generator.sequenceNumber(List(A, B), 10)

    drawer.convert(data).draw

  }

}

``` 

[L-System]: https://en.wikipedia.org/wiki/L-system