ninjatrader/indicators/TMASlope.cs

#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

//This namespace holds Indicators in this folder and is required. Do not change it. 
namespace NinjaTrader.NinjaScript.Indicators
{
    public class TMASlope : Indicator
    {
        private SMA sma;
        private ATR atr;
        private Series<double> tma;

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description = @"Credit to @BestForexMethod for the inspiration";
                Name = "TMA Slope";

                Calculate = Calculate.OnPriceChange;
                IsOverlay = false;
                DisplayInDataBox = true;
                PaintPriceMarkers = true;
                ScaleJustification = ScaleJustification.Right;
                IsSuspendedWhileInactive = true;

                TMAPeriod = 13;
                ATRPeriod = 100;

                PositiveBrush = Brushes.LimeGreen;
                NegativeBrush = Brushes.Red;
                NeutralBrush = Brushes.DimGray;

                ArePlotsConfigurable = false;
                AddPlot(new Stroke(Brushes.Transparent, 0), PlotStyle.Bar, "Histogram");
            }
            else if (State == State.DataLoaded)
            {
                sma = SMA(Close, TMAPeriod);
                atr = ATR(ATRPeriod);
                tma = new Series<double>(this);
            }
        }

        protected override void OnBarUpdate()
        {
            if (CurrentBar < TMAPeriod * 2 || CurrentBar < ATRPeriod)
                return;

            tma[0] = SMA(sma, TMAPeriod)[0];
            double slope = (tma[0] - tma[1]) / atr[0];

            Histogram[0] = slope;

            if (slope > 0 && slope > Histogram[1])
                PlotBrushes[0][0] = PositiveBrush;
            else if (slope < 0 && slope < Histogram[1])
                PlotBrushes[0][0] = NegativeBrush;
            else
                PlotBrushes[0][0] = NeutralBrush;
        }

        protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
        {
            base.OnRender(chartControl, chartScale);

            foreach (Plot plot in Plots)
                plot.Width = chartControl.GetBarPaintWidth(ChartBars);
        }

        public override string DisplayName
        {
            get { return Name; }
        }

        [Browsable(false)]
        [XmlIgnore]
        public Series<double> Histogram
        {
            get { return Values[0]; }
        }

        [NinjaScriptProperty]
        [Range(1, int.MaxValue)]
        [Display(Name = "TMA Period", Order = 1, GroupName = "TMA Slope")]
        public int TMAPeriod { get; set; }

        [NinjaScriptProperty]
        [Range(1, int.MaxValue)]
        [Display(Name = "ATR Period", Order = 2, GroupName = "TMA Slope")]
        public int ATRPeriod { get; set; }

        [XmlIgnore]
        [Display(Name = "Positive Value", Order = 3, GroupName = "TMA Slope")]
        public Brush PositiveBrush
        { get; set; }

        [Browsable(false)]
        public string PositiveBrushSerializable
        {
            get { return Serialize.BrushToString(PositiveBrush); }
            set { PositiveBrush = Serialize.StringToBrush(value); }
        }

        [XmlIgnore]
        [Display(Name = "Negative Value", Order = 4, GroupName = "TMA Slope")]
        public Brush NegativeBrush
        { get; set; }

        [Browsable(false)]
        public string NegativeBrushSerializable
        {
            get { return Serialize.BrushToString(NegativeBrush); }
            set { NegativeBrush = Serialize.StringToBrush(value); }
        }

        [XmlIgnore]
        [Display(Name = "Neutral Value", Order = 5, GroupName = "TMA Slope")]
        public Brush NeutralBrush
        { get; set; }

        [Browsable(false)]
        public string NeutralBrushSerializable
        {
            get { return Serialize.BrushToString(NeutralBrush); }
            set { NeutralBrush = Serialize.StringToBrush(value); }
        }
    }
}

#region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
    public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
    {
        private TMASlope[] cacheTMASlope;
        public TMASlope TMASlope(int tMAPeriod, int aTRPeriod)
        {
            return TMASlope(Input, tMAPeriod, aTRPeriod);
        }

        public TMASlope TMASlope(ISeries<double> input, int tMAPeriod, int aTRPeriod)
        {
            if (cacheTMASlope != null)
                for (int idx = 0; idx < cacheTMASlope.Length; idx++)
                    if (cacheTMASlope[idx] != null && cacheTMASlope[idx].TMAPeriod == tMAPeriod && cacheTMASlope[idx].ATRPeriod == aTRPeriod && cacheTMASlope[idx].EqualsInput(input))
                        return cacheTMASlope[idx];
            return CacheIndicator<TMASlope>(new TMASlope(){ TMAPeriod = tMAPeriod, ATRPeriod = aTRPeriod }, input, ref cacheTMASlope);
        }
    }
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
    public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
    {
        public Indicators.TMASlope TMASlope(int tMAPeriod, int aTRPeriod)
        {
            return indicator.TMASlope(Input, tMAPeriod, aTRPeriod);
        }

        public Indicators.TMASlope TMASlope(ISeries<double> input , int tMAPeriod, int aTRPeriod)
        {
            return indicator.TMASlope(input, tMAPeriod, aTRPeriod);
        }
    }
}

namespace NinjaTrader.NinjaScript.Strategies
{
    public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
    {
        public Indicators.TMASlope TMASlope(int tMAPeriod, int aTRPeriod)
        {
            return indicator.TMASlope(Input, tMAPeriod, aTRPeriod);
        }

        public Indicators.TMASlope TMASlope(ISeries<double> input , int tMAPeriod, int aTRPeriod)
        {
            return indicator.TMASlope(input, tMAPeriod, aTRPeriod);
        }
    }
}

#endregion