resetting ray position

[brucelevy]

HI, I would like to draw a horizontal ray going forward from the open of a candle which a signal was given, but to then have that same ray update to the latest candle once the next signal is given.

[NinjaTrader_PatrickH]

Hello brucelevy,

Thank you for your patience.

Below is code that would draw a ray on the first instance and then set it to the second instance (or in my example that last instance of the signal). My example uses Close[0] > SMA(20)[0] as the signal.

    public class TestRay : Indicator
    {
        #region Variables
        private int instance = 0;
		private int barOfInstance;
		private IRay myRay;
        #endregion

        /// <summary>
        /// This method is used to configure the indicator and is called once before any bar data is loaded.
        /// </summary>
        protected override void Initialize()
        {
            DrawOnPricePanel	= true;
            Overlay				= true;
        }

        /// <summary>
        /// Called on each bar update event (incoming tick)
        /// </summary>
        protected override void OnBarUpdate()
        {
            if(Close[0] > SMA(20)[0]) // Basic Signal
			{
				if(instance == 0) // first instance of our signal
				{
					myRay = DrawRay("myRay", 0, Close[0], -1, Close[0], Color.Black);
					instance = 1;
					barOfInstance = CurrentBar;
				}
				if(instance == 1
					&& CurrentBar > barOfInstance) // second instance of our signal
				{
					myRay = DrawRay("myRay", (CurrentBar - barOfInstance), Close[(CurrentBar - barOfInstance)], 0, Close[0], Color.Black);
					instance = 0;
				}
			}
        }

        #region Properties
        
        #endregion
    }