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Bulls Power - source code
// Forex Strategy Builder
// Copyright (c) 2006 - 2008 Miroslav Popov - All rights reserved!
// http://forexsb.com
// info(a)forexsb.com
//
// Last changed on: 2006-09-01
using System;
using System.Drawing;
namespace Forex_Strategy_Builder
{
/// <summary>
/// indicator: Bulls Power
/// </summary>
public class Bulls_Power : Indicator
{
/// <summary>
/// The default constructor.
/// </summary>
public Bulls_Power()
{
}
/// <summary>
/// Sets the default parameters for the designated slot type.
/// </summary>
/// <param name="slotType">The slot type.</param>
public Bulls_Power(SlotTypes slotType)
{
sIndicatorName = "Bulls Power";
parameters = new IndicatorParam();
component = new IndicatorComp[] { };
bSeparatedChart = true;
bIsCalculated = false;
// The indicator name.
parameters.IndicatorName = sIndicatorName;
// The slot type.
parameters.SlotType = slotType;
// The ComboBox parameters.
parameters.ListParam[0].Caption = "Logic";
parameters.ListParam[0].ItemList = new string[]
{
"The Bulls Power rises",
"The Bulls Power falls",
"The Bulls Power is higher than the Level line",
"The Bulls Power is lower than the Level line",
"The Bulls Power crosses the Level line upward",
"The Bulls Power crosses the Level line downward",
"The Bulls Power changes its direction upward",
"The Bulls Power changes its direction downward"
};
parameters.ListParam[0].Index = 0;
parameters.ListParam[0].Text = parameters.ListParam[0].ItemList[parameters.ListParam[0].Index];
parameters.ListParam[0].Enabled = true;
parameters.ListParam[0].ToolTip = "Logic of application of the indicator";
parameters.ListParam[1].Caption = "Smoothing method";
parameters.ListParam[1].ItemList = Enum.GetNames(typeof(MAMethod));
parameters.ListParam[1].Index = 2;
parameters.ListParam[1].Text = parameters.ListParam[1].ItemList[parameters.ListParam[1].Index];
parameters.ListParam[1].Enabled = true;
parameters.ListParam[1].ToolTip = "The Moving Average method used for smoothing the Bulls Power value";
// The NumericUpDown parameters.
parameters.NumParam[0].Caption = "Smoothing period";
parameters.NumParam[0].Value = 13;
parameters.NumParam[0].Min = 1;
parameters.NumParam[0].Max = 200;
parameters.NumParam[0].Enabled = true;
parameters.NumParam[0].ToolTip = "The period of smoothing of the Bulls Power value";
parameters.NumParam[1].Caption = "Level";
parameters.NumParam[1].Value = 0;
parameters.NumParam[1].Min = -100;
parameters.NumParam[1].Max = 100;
parameters.NumParam[1].Point = 4;
parameters.NumParam[1].Enabled = true;
parameters.NumParam[1].ToolTip = "A critical level (for the appropriate logic)";
// The CheckBox parameters.
parameters.CheckParam[0].Caption = "Use previous bar value";
parameters.CheckParam[0].Checked = Data.Strategy.PrepareUsePrevBarValueCheckBox(slotType);
parameters.CheckParam[0].Enabled = true;
parameters.CheckParam[0].ToolTip = "Use the indicator value from the previous bar";
}
/// <summary>
/// Calculates the indicator's components.
/// </summary>
/// <param name="slotType">The slot type.</param>
public override void Calculate(SlotTypes slotType)
{
if (parameters.SlotType == SlotTypes.NotDefined) return;
// Reading the parameters
MAMethod maMethod = (MAMethod)Enum.GetValues(typeof(MAMethod)).GetValue(parameters.ListParam[1].Index);
int iPeriod = (int)parameters.NumParam[0].Value;
float fLevel = parameters.NumParam[1].Value;
int iPrvs = parameters.CheckParam[0].Checked ? 1 : 0;
// Calculation
int iFirstBar = iPeriod + 2;
float[] afMA = MovingAverage(iPeriod, 0, maMethod, Price(BasePrice.Close));
float[] afBulls = new float[Bars];
for (int iBar = iPeriod; iBar < Bars; iBar++)
{
afBulls[iBar] = High[iBar] - afMA[iBar];
}
// Saving the components
component = new IndicatorComp[3];
component[0] = new IndicatorComp();
component[0].CompName = "Bulls Power";
component[0].DataType = IndComponentType.IndicatorValue;
component[0].ChartType = IndChartType.Histogram;
component[0].FirstBar = iFirstBar;
component[0].Value = afBulls;
component[1] = new IndicatorComp();
component[1].ChartType = IndChartType.NoChart;
component[1].FirstBar = iFirstBar;
component[1].Value = new float[Bars];
component[2] = new IndicatorComp();
component[2].ChartType = IndChartType.NoChart;
component[2].FirstBar = iFirstBar;
component[2].Value = new float[Bars];
// Sets the component's type.
if (slotType == SlotTypes.OpenFilter)
{
component[1].DataType = IndComponentType.AllowOpenLong;
component[1].CompName = "Allows long positions opening";
component[2].DataType = IndComponentType.AllowOpenShort;
component[2].CompName = "Allows short positions opening";
}
else if (slotType == SlotTypes.CloseFilter)
{
component[1].DataType = IndComponentType.ForceCloseLong;
component[1].CompName = "Forces long positions closing";
component[2].DataType = IndComponentType.ForceCloseShort;
component[2].CompName = "Forces short positions closing";
}
// Calculation of the logic.
IndicatorLogic indLogic = IndicatorLogic.It_does_not_act_as_a_filter;
switch (parameters.ListParam[0].Text)
{
case "The Bulls Power rises":
indLogic = IndicatorLogic.The_indicator_rises;
afSpecValue = new float[1] { 0f };
break;
case "The Bulls Power falls":
indLogic = IndicatorLogic.The_indicator_falls;
afSpecValue = new float[1] { 0f };
break;
case "The Bulls Power is higher than the Level line":
indLogic = IndicatorLogic.The_indicator_is_higher_than_the_level_line;
afSpecValue = new float[2] { fLevel, -fLevel };
break;
case "The Bulls Power is lower than the Level line":
indLogic = IndicatorLogic.The_indicator_is_lower_than_the_level_line;
afSpecValue = new float[2] { fLevel, -fLevel };
break;
case "The Bulls Power crosses the Level line upward":
indLogic = IndicatorLogic.The_indicator_crosses_the_level_line_upward;
afSpecValue = new float[2] { fLevel, -fLevel };
break;
case "The Bulls Power crosses the Level line downward":
indLogic = IndicatorLogic.The_indicator_crosses_the_level_line_downward;
afSpecValue = new float[2] { fLevel, -fLevel };
break;
case "The Bulls Power changes its direction upward":
indLogic = IndicatorLogic.The_indicator_changes_its_direction_upward;
afSpecValue = new float[1] { 0f };
break;
case "The Bulls Power changes its direction downward":
indLogic = IndicatorLogic.The_indicator_changes_its_direction_downward;
afSpecValue = new float[1] { 0f };
break;
default:
break;
}
bIsCalculated = OscillatorLogic(iFirstBar, iPrvs, afBulls, fLevel, -fLevel, ref component[1], ref component[2], indLogic);
}
}
}
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