doesnt' seem to display anything, should be fractal

ASDFFADS.scala

import java.awt.{ Color, Graphics2D, Dimension }
import swing.{ SimpleSwingApplication, Panel, Frame }
import util.Random


object ASDFFADS extends SimpleSwingApplication {
  class FernFractalFrame(transformFunction: (Double, Double) => (Double, Double), val width: Int, val height: Int, val max: Int) extends Frame {

  contents = new Panel {
    preferredSize = new Dimension(width, height)
    opaque = true

    override def paint(g: Graphics2D) {
      g.setBackground(new Color(0, 0, 0))
      g.setColor(Color.GREEN)
      g.drawLine(height / 2, width / 2, height / 2, width / 2)
      drawFern((0, 1), max, g)
    }

    def paintPoint(p: (Double, Double), g: Graphics2D) = {
      val scale = height / 11
      val y = (height - 25) - (scale * p._2)
      val x = (width / 2) + (scale * p._1)
      g.drawLine(x.toInt, y.toInt, x.toInt, y.toInt)
    }

    def drawFern(p: (Double, Double), max: Int, g: Graphics2D) {
      paintPoint(p, g)
      repaint()
      if (max != 0)
        drawFern(transformFunction(p._1, p._2), max - 1, g)
    }
  }
}
  import scala.math._
  def top = new FernFractalFrame((a, b) => (pow(a, b), pow(b, 10)), 1000, 1000, 100000)

}