Code Sketch

// Borrowed from:
// http://weblogs.java.net/blog/cayhorstmann/archive/2010/11/12/geometry-problem-scala-0
// with very small tweaks to make the SPDE code run on Kojo

import Staging._
import math.Pi

screenSize(400, 400)
val width = 400
reset()
def pairs(n : Int) = for (i <- 0 until n; j <- 0 until n; if i < j) yield (i, j)

def point(i : Int, n : Int, width : Int) = 
  (((cos(i * 2 * Pi / n) + 1) * width / 2).toInt, 
   ((sin(i * 2 * Pi / n) + 1) * width / 2).toInt)

def draw {
  val n = 19
  val points = for (i <- 0 until n) yield point(i, n, width)
  val lines = for ((i, j) <- pairs(n)) yield (points(i), points(j))
  for (((x1, y1), (x2, y2)) <- lines) line(x1, y1, x2, y2) 
}

stroke(yellow)
background(blue)
draw