Mesher Class

 public partial class Form1 : Form
  {
 
      public Form1()
      {	
          InitializeComponent();
          // adds event handler for WorkCompleted event
          viewport1.WorkCompleted += new Viewport.WorkCompletedEventHandler(viewport1_WorkCompleted);
      }
 
      protected override void OnShown(EventArgs e)
      {
 
          viewport1.DisplayMode = displayType.Shaded;
 
          CompositeCurve outer = new CompositeCurve();
 
          outer.CurveList.Add(new Line(0, 0, 10, 0));
          outer.CurveList.Add(new Line(10, 0, 10, 6));
          outer.CurveList.Add(new Line(10, 6, 0, 6));
          outer.CurveList.Add(new Line(0, 6, 0, 0));
 
          CompositeCurve inner1 = new CompositeCurve();
 
          inner1.CurveList.Add(new Line(2, 2, 6, 2));
          inner1.CurveList.Add(new Line(6, 2, 2, 3));
          inner1.CurveList.Add(new Line(2, 3, 2, 2));
 
          CompositeCurve inner2 = new CompositeCurve();
 
          inner2.CurveList.Add(new Circle(8, 4, 0, 1));
 
          CompositeCurve inner3 = new CompositeCurve();
 
          inner3.CurveList.Add(new Circle(6, 4, 0, .75));
 
          Mesher me = new Mesher(outer, new CompositeCurve[] { inner1, inner2, inner3 }, .15, mesherSmoothingType.AreaCentroidWeighted, 2);
 
          viewport1.StartWork(me);
 
          base.OnShown(e);
 
      }
 
      public void viewport1_WorkCompleted(object sender, WorkCompletedEventArgs e)
      {
 
          // checks the WorkUnit type, more than one can be present in the same application
          if (e.WorkUnit is Mesher)
          {
 
              Mesher me = (Mesher)e.WorkUnit;
 
              Mesh m = me.Result;
 
              // adds the mesh to the viewport
              viewport1.Entities.Add(m, 0, Color.Coral);
 
              viewport1.SetView(viewType.Trimetric);
              viewport1.ZoomFit();
              viewport1.Invalidate();
 
          }
 
      }
 
  }