Simple VTK Cone - Scala Way

Show a VTK cone using Scala's Swing. 
import java.awt.BorderLayout
import javax.swing.JPanel
import swing._
import vtk._

/**
 * Create a cone and display it in an application window using Scala's Swing
 */
object ScalaCone extends SimpleSwingApplication {

  // Setup VTK rendering panel, this also loads VTK native libraries
  var renWin: vtkPanel = new vtkPanel

  // Create wrapper to integrate vtkPanel with Scala's Swing API
  val scalaPanel = new Component {
    override lazy val peer = new JPanel(new BorderLayout())
    peer.add(renWin)
  }

  // Setup cone rendering pipeline
  var cone = new vtkConeSource
  cone.SetResolution(8)

  var coneMapper = new vtkPolyDataMapper
  coneMapper.SetInputConnection(cone.GetOutputPort)

  var coneActor = new vtkActor
  coneActor.SetMapper(coneMapper)

  renWin.GetRenderer.AddActor(coneActor)
  renWin.GetRenderer.ResetCamera


  // Create the main application window
  def top = new MainFrame {
    title = "ScaleCone"
    contents = scalaPanel
  }
}