Artur
134 lines
4.8 KiB
Plaintext
134 lines
4.8 KiB
Plaintext
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//+------------------------------------------------------------------+
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//| Envelopes.mq5 |
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//| Copyright 2009, MetaQuotes Software Corp. |
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//| http://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "2009, MetaQuotes Software Corp."
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#property link "http://www.mql5.com"
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//--- indicator settings
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#property indicator_chart_window
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#property indicator_buffers 3
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#property indicator_plots 2
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#property indicator_type1 DRAW_LINE
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#property indicator_type2 DRAW_LINE
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#property indicator_color1 Blue
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#property indicator_color2 Red
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#property indicator_label1 "Upper band"
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#property indicator_label2 "Lower band"
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//--- input parameters
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input int InpMAPeriod=14; // Period
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input int InpMAShift=0; // Shift
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input ENUM_MA_METHOD InpMAMethod=MODE_SMA; // Method
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input ENUM_APPLIED_PRICE InpAppliedPrice=PRICE_CLOSE; // Applied price
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input double InpDeviation=0.1; // Deviation
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//--- indicator buffers
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double ExtUpBuffer[];
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double ExtDownBuffer[];
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double ExtMABuffer[];
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int weightSum;
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//--- MA handle
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//int ExtMAHandle;
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#include <MovingAverages.mqh>
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#include <AZ-INVEST/CustomBarConfig.mqh>
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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void OnInit()
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{
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//--- indicator buffers mapping
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SetIndexBuffer(0,ExtUpBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,ExtDownBuffer,INDICATOR_DATA);
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SetIndexBuffer(2,ExtMABuffer,INDICATOR_CALCULATIONS);
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//---
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IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1);
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//--- sets first bar from what index will be drawn
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PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpMAPeriod-1);
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//--- name for DataWindow
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IndicatorSetString(INDICATOR_SHORTNAME,"Env("+string(InpMAPeriod)+")");
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PlotIndexSetString(0,PLOT_LABEL,"Env("+string(InpMAPeriod)+")Upper");
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PlotIndexSetString(1,PLOT_LABEL,"Env("+string(InpMAPeriod)+")Lower");
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//---- line shifts when drawing
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PlotIndexSetInteger(0,PLOT_SHIFT,InpMAShift);
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PlotIndexSetInteger(1,PLOT_SHIFT,InpMAShift);
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//---
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customChartIndicator.SetUseAppliedPriceFlag(InpAppliedPrice);
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//--- initialization done
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}
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//+------------------------------------------------------------------+
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//| Envelopes |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total,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 &TickVolume[],
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const long &Volume[],
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const int &Spread[])
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{
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int i,limit;
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//--- check for bars count
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if(rates_total<InpMAPeriod)
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return(0);
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//--
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if(!customChartIndicator.OnCalculate(rates_total,prev_calculated,Time,Close))
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return(0);
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if(!customChartIndicator.BufferSynchronizationCheck(Close))
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return(0);
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int _prev_calculated = customChartIndicator.GetPrevCalculated();
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//--- we can copy not all data
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int to_copy;
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if(_prev_calculated>rates_total || _prev_calculated<0) to_copy=rates_total;
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else
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{
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to_copy=rates_total-_prev_calculated;
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if(_prev_calculated>0) to_copy++;
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}
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//---- get ma buffer
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if(IsStopped()) return(0); //Checking for stop flag
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switch(InpMAMethod)
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{
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case MODE_SMA:
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SimpleMAOnBuffer(rates_total,_prev_calculated,0,InpMAPeriod,customChartIndicator.Price,ExtMABuffer);
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break;
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case MODE_EMA:
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ExponentialMAOnBuffer(rates_total,_prev_calculated,0,InpMAPeriod,customChartIndicator.Price,ExtMABuffer);
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break;
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case MODE_SMMA:
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SmoothedMAOnBuffer(rates_total,_prev_calculated,0,InpMAPeriod,customChartIndicator.Price,ExtMABuffer);
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break;
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case MODE_LWMA:
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LinearWeightedMAOnBuffer(rates_total,_prev_calculated,0,InpMAPeriod,customChartIndicator.Price,ExtMABuffer,weightSum);
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break;
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}
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//--- preliminary calculations
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limit=_prev_calculated-1;
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if(limit<InpMAPeriod)
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limit=InpMAPeriod;
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//--- the main loop of calculations
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for(i=limit;i<rates_total && !IsStopped();i++)
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{
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ExtUpBuffer[i]=(1+InpDeviation/100.0)*ExtMABuffer[i];
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ExtDownBuffer[i]=(1-InpDeviation/100.0)*ExtMABuffer[i];
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}
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//--- done
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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