Forex_Strategy_Builder.Percent_Change.Calculate C# (CSharp) Method

        public override void Calculate(SlotTypes slotType)
        {
            // Reading the parameters
            BasePrice basePrice = (BasePrice)IndParam.ListParam[1].Index;
            int       iPeriod   = (int)IndParam.NumParam  [0].Value;
            double    dLevel    = IndParam.NumParam  [1].Value;
            int       iPrvs     = IndParam.CheckParam[0].Checked ? 1 : 0;

            // Calculation
            int      iFirstBar   = iPeriod + 2;
            double[] adBasePrice = Price(basePrice);
            double[] adPC = new double[Bars];

            for (int iBar = iPeriod; iBar < Bars; iBar++)
            {
                adPC[iBar] = 100 * (adBasePrice[iBar] - adBasePrice[iBar - iPeriod]) / adBasePrice[iBar - iPeriod];
            }

            // Saving the components
            Component = new IndicatorComp[3];

            Component[0]            = new IndicatorComp();
            Component[0].CompName   = "Percent Change";
            Component[0].DataType   = IndComponentType.IndicatorValue;
            Component[0].ChartType  = IndChartType.Histogram;
            Component[0].FirstBar   = iFirstBar;
            Component[0].Value      = adPC;

            Component[1]            = new IndicatorComp();
            Component[1].ChartType  = IndChartType.NoChart;
            Component[1].FirstBar   = iFirstBar;
            Component[1].Value      = new double[Bars];

            Component[2]            = new IndicatorComp();
            Component[2].ChartType  = IndChartType.NoChart;
            Component[2].FirstBar   = iFirstBar;
            Component[2].Value      = new double[Bars];

            // Sets the Component's type
            if (slotType == SlotTypes.OpenFilter)
            {
                Component[1].DataType = IndComponentType.AllowOpenLong;
                Component[1].CompName = "Is long entry allowed";
                Component[2].DataType = IndComponentType.AllowOpenShort;
                Component[2].CompName = "Is short entry allowed";
            }
            else if (slotType == SlotTypes.CloseFilter)
            {
                Component[1].DataType = IndComponentType.ForceCloseLong;
                Component[1].CompName = "Close out long position";
                Component[2].DataType = IndComponentType.ForceCloseShort;
                Component[2].CompName = "Close out short position";
            }

            // Calculation of the logic
            IndicatorLogic indLogic = IndicatorLogic.It_does_not_act_as_a_filter;

            switch (IndParam.ListParam[0].Text)
            {
                case "The Percent Change rises":
                    indLogic = IndicatorLogic.The_indicator_rises;
                    SpecialValues = new double[1] { 0 };
                    break;

                case "The Percent Change falls":
                    indLogic = IndicatorLogic.The_indicator_falls;
                    SpecialValues = new double[1] { 0 };
                    break;

                case "The Percent Change is higher than the Level line":
                    indLogic = IndicatorLogic.The_indicator_is_higher_than_the_level_line;
                    SpecialValues = new double[2] { dLevel, -dLevel };
                    break;

                case "The Percent Change is lower than the Level line":
                    indLogic = IndicatorLogic.The_indicator_is_lower_than_the_level_line;
                    SpecialValues = new double[2] { dLevel, -dLevel };
                    break;

                case "The Percent Change crosses the Level line upward":
                    indLogic = IndicatorLogic.The_indicator_crosses_the_level_line_upward;
                    SpecialValues = new double[2] { dLevel, -dLevel };
                    break;

                case "The Percent Change crosses the Level line downward":
                    indLogic = IndicatorLogic.The_indicator_crosses_the_level_line_downward;
                    SpecialValues = new double[2] { dLevel, -dLevel };
                    break;

                case "The Percent Change changes its direction upward":
                    indLogic = IndicatorLogic.The_indicator_changes_its_direction_upward;
                    SpecialValues = new double[1] { 0 };
                    break;

                case "The Percent Change changes its direction downward":
                    indLogic = IndicatorLogic.The_indicator_changes_its_direction_downward;
                    SpecialValues = new double[1] { 0 };
                    break;

                default:
                    break;
            }

            OscillatorLogic(iFirstBar, iPrvs, adPC, dLevel, -dLevel, ref Component[1], ref Component[2], indLogic);

            return;
        }