115 lines
3.8 KiB
Plaintext
115 lines
3.8 KiB
Plaintext
//+------------------------------------------------------------------+
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//| Accelerator.mq4 |
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//| Copyright 2005-2014, MetaQuotes Software Corp. |
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//| http://www.mql4.com |
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//+------------------------------------------------------------------+
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#property copyright "2005-2014, MetaQuotes Software Corp."
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#property link "http://www.mql4.com"
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#property description "Accelerator/Decelerator"
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#property strict
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#include <MovingAverages.mqh>
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//--- indicator settings
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#property indicator_separate_window
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#property indicator_buffers 3
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#property indicator_color1 Black
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#property indicator_color2 Green
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#property indicator_color3 Red
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//--- indicator buffers
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double ExtACBuffer[];
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double ExtUpBuffer[];
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double ExtDnBuffer[];
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double ExtMacdBuffer[];
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double ExtSignalBuffer[];
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//---
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#define PERIOD_FAST 5
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#define PERIOD_SLOW 34
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//--- bars minimum for calculation
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#define DATA_LIMIT 38
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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void OnInit(void)
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{
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IndicatorShortName("AC");
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//--- 2 additional buffers are used for counting.
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IndicatorBuffers(5);
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//--- drawing settings
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SetIndexStyle(0,DRAW_NONE);
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SetIndexStyle(1,DRAW_HISTOGRAM);
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SetIndexStyle(2,DRAW_HISTOGRAM);
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IndicatorDigits(Digits+2);
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SetIndexDrawBegin(0,DATA_LIMIT);
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SetIndexDrawBegin(1,DATA_LIMIT);
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SetIndexDrawBegin(2,DATA_LIMIT);
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//--- all indicator buffers mapping
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SetIndexBuffer(0,ExtACBuffer);
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SetIndexBuffer(1,ExtUpBuffer);
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SetIndexBuffer(2,ExtDnBuffer);
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SetIndexBuffer(3,ExtMacdBuffer);
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SetIndexBuffer(4,ExtSignalBuffer);
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//--- name for DataWindow and indicator subwindow label
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SetIndexLabel(1,NULL);
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SetIndexLabel(2,NULL);
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}
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//+------------------------------------------------------------------+
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//| Accelerator/Decelerator Oscillator |
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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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int i,limit;
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double prev=0.0,current;
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//--- check for rates total
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if(rates_total<=DATA_LIMIT)
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return(0);
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//--- last counted bar will be recounted
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limit=rates_total-prev_calculated;
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if(prev_calculated>0)
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{
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limit++;
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prev=ExtMacdBuffer[limit]-ExtSignalBuffer[limit];
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}
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//--- macd counted in the 1-st additional buffer
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for(i=0; i<limit; i++)
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ExtMacdBuffer[i]=iMA(NULL,0,PERIOD_FAST,0,MODE_SMA,PRICE_MEDIAN,i)-
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iMA(NULL,0,PERIOD_SLOW,0,MODE_SMA,PRICE_MEDIAN,i);
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//--- signal line counted in the 2-nd additional buffer
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SimpleMAOnBuffer(rates_total,prev_calculated,0,5,ExtMacdBuffer,ExtSignalBuffer);
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//--- dispatch values between 2 buffers
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bool up=true;
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for(i=limit-1; i>=0;)
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{
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current=ExtMacdBuffer[i]-ExtSignalBuffer[i];
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if(current>prev)
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up=true;
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if(current<prev)
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up=false;
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if(!up)
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{
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ExtUpBuffer[i]=0.0;
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ExtDnBuffer[i]=current;
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}
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else
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{
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ExtUpBuffer[i]=current;
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ExtDnBuffer[i]=0.0;
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}
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ExtACBuffer[i]=current;
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i--;
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prev=ExtMacdBuffer[i+1]-ExtSignalBuffer[i+1];
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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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