//+------------------------------------------------------------------+
//|                                                    Pointer14.mq4 |
//|                                              Copyright 2021, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2021, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property strict
#property indicator_chart_window

#property indicator_buffers 2

extern int Count=111;

double up[];
double dn[];

datetime t=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexStyle(0,DRAW_ARROW,0,2,Blue);
   SetIndexArrow(0,108);
   SetIndexBuffer(0,up);

   SetIndexStyle(1,DRAW_ARROW,0,2,Red);
   SetIndexArrow(1,108);
   SetIndexBuffer(1,dn);

   Comment("");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---

   for(int i=0; i<Count; i++)
     {
      if(close[i]>close[i+1] && close[i+1]>open[i+1] && low[i]<low[i+1])
        {
         up[i]=low[i];
        }
      if(close[i]<close[i+1] && close[i+1]<open[i+1] && high[i]>high[i+1])
        {
         dn[i]=high[i];
        }
     }
           
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+