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amirghadiri1987
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//+------------------------------------------------------------------+
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//| SignalCrossEMA.mqh |
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//| Copyright © 2010, MetaQuotes Software Corp. |
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//| http://www.metaquotes.net |
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//| Revision 2010.10.12 |
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//+------------------------------------------------------------------+
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#include <Expert\ExpertSignal.mqh>
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// wizard description start
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//+------------------------------------------------------------------+
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//| Description of the class |
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//| Title=Signals based on crossover of two EMA |
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//| Type=Signal |
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//| Name=CrossEMA |
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//| Class=CSignalCrossEMA |
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//| Page= |
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//| Parameter=FastPeriod,int,12 |
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//| Parameter=SlowPeriod,int,24 |
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//+------------------------------------------------------------------+
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// wizard description end
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//+------------------------------------------------------------------+
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//| Class CSignalCrossEMA. |
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//| Appointment: Class trading signals cross two EMA. |
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//| Derives from class CExpertSignal. |
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//+------------------------------------------------------------------+
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class CSignalCrossEMA : public CExpertSignal
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{
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protected:
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CiMA *m_FastEMA;
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CiMA *m_SlowEMA;
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//--- input parameters
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int m_fast_period;
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int m_slow_period;
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public:
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CSignalCrossEMA();
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~CSignalCrossEMA();
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//--- methods initialize protected data
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void FastPeriod(int period) { m_fast_period=period; }
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void SlowPeriod(int period) { m_slow_period=period; }
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virtual bool InitIndicators(CIndicators* indicators);
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virtual bool ValidationSettings();
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//---
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virtual bool CheckOpenLong(double& price,double& sl,double& tp,datetime& expiration);
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virtual bool CheckCloseLong(double& price);
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virtual bool CheckOpenShort(double& price,double& sl,double& tp,datetime& expiration);
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virtual bool CheckCloseShort(double& price);
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protected:
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bool InitFastEMA(CIndicators* indicators);
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bool InitSlowEMA(CIndicators* indicators);
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//---
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double FastEMA(int ind) { return(m_FastEMA.Main(ind)); }
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double SlowEMA(int ind) { return(m_SlowEMA.Main(ind)); }
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double StateFastEMA(int ind) { return(FastEMA(ind)-FastEMA(ind+1)); }
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double StateSlowEMA(int ind) { return(SlowEMA(ind)-SlowEMA(ind+1)); }
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double StateEMA(int ind) { return(FastEMA(ind)-SlowEMA(ind)); }
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};
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//+------------------------------------------------------------------+
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//| Constructor CSignalCrossEMA. |
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//| INPUT: no. |
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//| OUTPUT: no. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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void CSignalCrossEMA::CSignalCrossEMA()
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{
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//--- initialize protected data
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m_FastEMA =NULL;
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m_SlowEMA =NULL;
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//--- set default inputs
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m_fast_period =12;
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m_slow_period =24;
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}
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//+------------------------------------------------------------------+
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//| Destructor CSignalCrossEMA. |
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//| INPUT: no. |
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//| OUTPUT: no. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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void CSignalCrossEMA::~CSignalCrossEMA()
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{
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//---
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}
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//+------------------------------------------------------------------+
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//| Validation settings protected data. |
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//| INPUT: no. |
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//| OUTPUT: true-if settings are correct, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::ValidationSettings()
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{
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if(m_fast_period>=m_slow_period)
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{
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printf(__FUNCTION__+": period of slow EMA must be greater than period of fast EMA");
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return(false);
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}
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//--- ok
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Create indicators. |
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//| INPUT: indicators -pointer of indicator collection. |
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//| OUTPUT: true-if successful, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::InitIndicators(CIndicators* indicators)
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{
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//--- check
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if(indicators==NULL) return(false);
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//--- create and initialize fast EMA indicator
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if(!InitFastEMA(indicators)) return(false);
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//--- create and initialize slow EMA indicator
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if(!InitSlowEMA(indicators)) return(false);
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//--- ok
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Create fast EMA indicators. |
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//| INPUT: indicators -pointer of indicator collection. |
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//| OUTPUT: true-if successful, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::InitFastEMA(CIndicators* indicators)
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{
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//--- create fast EMA indicator
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if(m_FastEMA==NULL)
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if((m_FastEMA=new CiMA)==NULL)
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{
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printf(__FUNCTION__+": error creating object");
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return(false);
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}
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//--- add fast EMA indicator to collection
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if(!indicators.Add(m_FastEMA))
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{
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printf(__FUNCTION__+": error adding object");
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delete m_FastEMA;
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return(false);
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}
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//--- initialize fast EMA indicator
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if(!m_FastEMA.Create(m_symbol.Name(),m_period,m_fast_period,0,MODE_EMA,PRICE_CLOSE))
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{
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printf(__FUNCTION__+": error initializing object");
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return(false);
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}
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m_FastEMA.BufferResize(1000);
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//--- ok
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Create slow EMA indicators. |
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//| INPUT: indicators -pointer of indicator collection. |
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//| OUTPUT: true-if successful, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::InitSlowEMA(CIndicators* indicators)
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{
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//--- create slow EMA indicator
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if(m_SlowEMA==NULL)
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if((m_SlowEMA=new CiMA)==NULL)
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{
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printf(__FUNCTION__+": error creating object");
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return(false);
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}
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//--- add slow EMA indicator to collection
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if(!indicators.Add(m_SlowEMA))
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{
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printf(__FUNCTION__+": error adding object");
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delete m_SlowEMA;
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return(false);
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}
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//--- initialize slow EMA indicator
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if(!m_SlowEMA.Create(m_symbol.Name(),m_period,m_slow_period,0,MODE_EMA,PRICE_CLOSE))
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{
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printf(__FUNCTION__+": error initializing object");
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return(false);
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}
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m_SlowEMA.BufferResize(1000);
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//--- ok
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Check conditions for long position open. |
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//| INPUT: price - refernce for price, |
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//| sl - refernce for stop loss, |
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//| tp - refernce for take profit, |
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//| expiration - refernce for expiration. |
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//| OUTPUT: true-if condition performed, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::CheckOpenLong(double& price,double& sl,double& tp,datetime& expiration)
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{
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if(!(StateEMA(2)<0 && StateEMA(1)>0)) return(false);
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//---
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price=0.0;
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sl =0.0;
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tp =0.0;
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//---
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Check conditions for long position close. |
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//| INPUT: price - refernce for price. |
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//| OUTPUT: true-if condition performed, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::CheckCloseLong(double& price)
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{
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if(!(StateEMA(2)>0 && StateEMA(1)<0)) return(false);
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//---
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price=0.0;
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//---
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Check conditions for short position open. |
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//| INPUT: price - refernce for price, |
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//| sl - refernce for stop loss, |
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//| tp - refernce for take profit, |
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//| expiration - refernce for expiration. |
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//| OUTPUT: true-if condition performed, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::CheckOpenShort(double& price,double& sl,double& tp,datetime& expiration)
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{
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if(!(StateEMA(2)>0 && StateEMA(1)<0)) return(false);
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//---
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price=0.0;
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sl =0.0;
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tp =0.0;
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//---
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Check conditions for short position close. |
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//| INPUT: price - refernce for price. |
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//| OUTPUT: true-if condition performed, false otherwise. |
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//| REMARK: no. |
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//+------------------------------------------------------------------+
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bool CSignalCrossEMA::CheckCloseShort(double& price)
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{
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if(!(StateEMA(2)<0 && StateEMA(1)>0)) return(false);
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//---
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price=0.0;
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//---
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return(true);
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}
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//+------------------------------------------------------------------+
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