GannLevel

public abstract interface GannLevel

 using cAlgo.API;
 namespace cAlgo
 {
     // This sample shows how to use a chart Gann Fan levels property to modify the gann levels
     [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
     public class GannLevelSample : Indicator
     {
         protected override void Initialize()
         {
             var gannFan = Chart.DrawGannFan("GannFan", Chart.FirstVisibleBarIndex, Bars.ClosePrices[Chart.FirstVisibleBarIndex], Chart.LastVisibleBarIndex, Bars.ClosePrices[Chart.LastVisibleBarIndex], Color.Blue);
             foreach (var level in gannFan.GannLevels)
             {
                 Print(level.Ratio);
                 if (level.Ratio > 4) level.IsVisible = false;
             }
         }
         public override void Calculate(int index)
         {
         }
     }
 }

public abstract double Ratio {get; set;}

public abstract bool IsVisible {get; set;}