generated from LengKundee/UA6-9V_VL6-N9
207 lines
19 KiB
MQL5
207 lines
19 KiB
MQL5
//+------------------------------------------------------------------+
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//| Crossover on the current bar.mq5 |
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//| Copyright © 2022, Vladimir Karputov |
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//| https://www.mql5.com/en/users/barabashkakvn |
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//+------------------------------------------------------------------+
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#property copyright "Copyright © 2022, Vladimir Karputov"
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#property link "https://www.mql5.com/en/users/barabashkakvn"
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#property version "1.000"
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#property indicator_separate_window
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#property indicator_buffers 4
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#property indicator_plots 1
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//--- plot Crossover
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#property indicator_label1 "Crossover"
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#property indicator_type1 DRAW_COLOR_ARROW
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#property indicator_color1 clrBlue,clrRed,clrGray
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#property indicator_style1 STYLE_SOLID
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#property indicator_width1 2
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//--- input parameters
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input group "MA Fast"
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input int Inp_MA_Fast_ma_period = 12; // MA Fast: averaging period
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input int Inp_MA_Fast_ma_shift = 0; // MA Fast: horizontal shift
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input ENUM_MA_METHOD Inp_MA_Fast_ma_method = MODE_SMA; // MA Fast: smoothing type
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input ENUM_APPLIED_PRICE Inp_MA_Fast_applied_price = PRICE_CLOSE; // MA Fast: type of price
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input group "MA Slow"
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input int Inp_MA_Slow_ma_period = 26; // MA Slow: averaging period
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input int Inp_MA_Slow_ma_shift = 0; // MA Slow: horizontal shift
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input ENUM_MA_METHOD Inp_MA_Slow_ma_method = MODE_SMA; // MA Slow: smoothing type
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input ENUM_APPLIED_PRICE Inp_MA_Slow_applied_price = PRICE_CLOSE; // MA Slow: type of price
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//--- indicator buffers
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double CrossoverBuffer[];
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double ColorBuffer[];
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double iMAFastBuffer[];
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double iMASlowBuffer[];
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//---
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int handle_iMA_Fast; // variable for storing the handle of the iMA indicator
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int handle_iMA_Slow; // variable for storing the handle of the iMA indicator
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int m_start;
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int bars_calculated = 0; // we will keep the number of values in the Moving Average indicator
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bool m_init_error = false; // error on InInit
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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int OnInit()
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{
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//--- indicator buffers mapping
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SetIndexBuffer(0,CrossoverBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,ColorBuffer,INDICATOR_COLOR_INDEX);
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SetIndexBuffer(2,iMAFastBuffer,INDICATOR_CALCULATIONS);
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SetIndexBuffer(3,iMASlowBuffer,INDICATOR_CALCULATIONS);
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//--- setting a code from the Wingdings charset as the property of PLOT_ARROW
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PlotIndexSetInteger(0,PLOT_ARROW,159);
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//--- an empty value for plotting, for which there is no drawing
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PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0);
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//--- create handle of the indicator iMA
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handle_iMA_Fast=iMA(Symbol(),Period(),Inp_MA_Fast_ma_period,Inp_MA_Fast_ma_shift,
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Inp_MA_Fast_ma_method,Inp_MA_Fast_applied_price);
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//--- if the handle is not created
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if(handle_iMA_Fast==INVALID_HANDLE)
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{
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//--- tell about the failure and output the error code
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PrintFormat("Failed to create handle of the iMA indicator (\"Fast\") for the symbol %s/%s, error code %d",
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Symbol(),
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EnumToString(Period()),
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GetLastError());
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//--- the indicator is stopped early
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m_init_error=true;
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return(INIT_SUCCEEDED);;
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}
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//--- create handle of the indicator iMA
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handle_iMA_Slow=iMA(Symbol(),Period(),Inp_MA_Slow_ma_period,Inp_MA_Slow_ma_shift,
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Inp_MA_Slow_ma_method,Inp_MA_Slow_applied_price);
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//--- if the handle is not created
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if(handle_iMA_Slow==INVALID_HANDLE)
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{
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//--- tell about the failure and output the error code
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PrintFormat("Failed to create handle of the iMA indicator (\"Slow\") for the symbol %s/%s, error code %d",
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Symbol(),
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EnumToString(Period()),
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GetLastError());
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//--- the indicator is stopped early
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m_init_error=true;
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return(INIT_SUCCEEDED);
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}
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//---
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m_start=Inp_MA_Fast_ma_period+Inp_MA_Fast_ma_shift;
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if(m_start<Inp_MA_Slow_ma_period+Inp_MA_Slow_ma_shift)
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m_start=Inp_MA_Slow_ma_period+Inp_MA_Slow_ma_shift;
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m_start++;
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//---
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return(INIT_SUCCEEDED);
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}
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//+------------------------------------------------------------------+
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//| Custom indicator iteration function |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total,
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const int prev_calculated,
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const datetime &time[],
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const double &open[],
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const double &high[],
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const double &low[],
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const double &close[],
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const long &tick_volume[],
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const long &volume[],
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const int &spread[])
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{
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if(rates_total<m_start || m_init_error)
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return(0);
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//--- number of values copied from the iMA indicator
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int values_to_copy;
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//--- determine the number of values calculated in the indicator
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int calculated_fast=BarsCalculated(handle_iMA_Fast);
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if(calculated_fast<=0)
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{
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PrintFormat("BarsCalculated(handle_iMA_Fast) returned %d, error code %d",calculated_fast,GetLastError());
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return(0);
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}
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int calculated_slow=BarsCalculated(handle_iMA_Slow);
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if(calculated_slow<=0)
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{
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PrintFormat("BarsCalculated(handle_iMA_Slow) returned %d, error code %d",calculated_slow,GetLastError());
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return(0);
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}
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if(calculated_fast!=calculated_slow)
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return(0);
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int calculated=calculated_fast;
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//--- if it is the first start of calculation of the indicator or if the number of values in the iMA indicator changed
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//---or if it is necessary to calculated the indicator for two or more bars (it means something has changed in the price history)
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if(prev_calculated==0 || calculated!=bars_calculated || rates_total>prev_calculated+1)
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{
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//--- if the iMABuffer array is greater than the number of values in the iMA indicator for symbol/period, then we don't copy everything
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//--- otherwise, we copy less than the size of indicator buffers
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if(calculated>rates_total)
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values_to_copy=rates_total;
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else
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values_to_copy=calculated;
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}
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else
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{
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//--- it means that it's not the first time of the indicator calculation, and since the last call of OnCalculate()
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//--- for calculation not more than one bar is added
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values_to_copy=(rates_total-prev_calculated)+1;
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}
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//--- fill the iMABuffer array with values of the Moving Average indicator
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//--- if FillArrayFromBuffer returns false, it means the information is nor ready yet, quit operation
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if(!FillArrayFromBuffer(iMAFastBuffer,Inp_MA_Fast_ma_shift,handle_iMA_Fast,values_to_copy))
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return(0);
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if(!FillArrayFromBuffer(iMASlowBuffer,Inp_MA_Slow_ma_shift,handle_iMA_Slow,values_to_copy))
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return(0);
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//--- memorize the number of values in the Moving Average indicator
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bars_calculated=calculated;
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//--- main loop
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int limit=prev_calculated-1;
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if(prev_calculated==0)
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limit=m_start;
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for(int i=limit; i<rates_total; i++)
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{
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CrossoverBuffer[i]=0.0;
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ColorBuffer[i]=2.0;
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if(iMAFastBuffer[i-1]<iMASlowBuffer[i-1] && iMAFastBuffer[i]>iMASlowBuffer[i])
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{
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CrossoverBuffer[i]=1.0;
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ColorBuffer[i]=0.0;
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}
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else
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if(iMAFastBuffer[i-1]>iMASlowBuffer[i-1] && iMAFastBuffer[i]<iMASlowBuffer[i])
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{
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CrossoverBuffer[i]=1.0;
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ColorBuffer[i]=1.0;
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}
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}
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//--- return value of prev_calculated for next call
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//| Filling indicator buffers from the MA indicator |
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//+------------------------------------------------------------------+
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bool FillArrayFromBuffer(double &values[], // indicator buffer of Moving Average values
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int shift, // shift
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int ind_handle, // handle of the iMA indicator
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int amount // number of copied values
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)
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{
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//--- reset error code
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ResetLastError();
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//--- fill a part of the iMABuffer array with values from the indicator buffer that has 0 index
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if(CopyBuffer(ind_handle,0,-shift,amount,values)<0)
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{
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//--- if the copying fails, tell the error code
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PrintFormat("Failed to copy data from the iMA indicator, error code %d",GetLastError());
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//--- quit with zero result - it means that the indicator is considered as not calculated
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return(false);
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}
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//--- everything is fine
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Indicator deinitialization function |
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//+------------------------------------------------------------------+
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void OnDeinit(const int reason)
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{
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if(handle_iMA_Fast!=INVALID_HANDLE)
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IndicatorRelease(handle_iMA_Fast);
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if(handle_iMA_Slow!=INVALID_HANDLE)
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IndicatorRelease(handle_iMA_Slow);
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}
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//+------------------------------------------------------------------+
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