CADEllipse Constructor

		
 	CreateNewImage();
 	CADEllipse ellipse = new CADEllipse();
 	ellipse.Color = CADConst.clNone;						
 	DPoint pt1 = GetRealPoint(100, 100);
 	DPoint pt2 = GetRealPoint(300, 300);
 	double dX = (pt2.X - pt1.X) / 2;
 	double dY = (pt2.Y - pt1.Y) / 4;
 	CADEllipse ell = new CADEllipse();
 	ellipse.Point = new DPoint(pt1.X + dX, pt1.Y + dY, 0);
 	ellipse.RadPt = new DPoint((pt2.X - pt1.X) / 2, (pt2.Y - pt2.Y) / 2, 0);
 	ellipse.Ratio = dY / dX;
 	ellipse.LineWeight = 0.1;
 	ellipse.StartParam = 360.0;
 	ellipse.EndParam = 0.0;
 	ellipse.LineWeight = 0.1;						
 	ellipse.Loaded(cadImage.Converter);			
 	ellipse.Handle = ellipse.GetHashCode();		
 	ellipse.KeyEnt = ellipse.Handle.ToString();			
 	cadImage.CurrentLayout.Entities.Add(ellipse);
 	cadImage.Converter.OnCreate(ellipse);		
 	EditorCADPictureBox.Invalidate();