//+------------------------------------------------------------------+
//|                                                         Zigi.mq4 |
//|                                              Copyright 2017, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2017, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property strict
#property indicator_chart_window
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping

//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void PutTrend(string name,datetime time1,double price1,datetime time2,double price2)
  {
   ObjectDelete(0,name);
   ObjectCreate(0,name,OBJ_TREND,0,time1,price1,time2,price2);
//--- установим цвет линии
   ObjectSetInteger(0,name,OBJPROP_COLOR,Blue);
//--- установим стиль отображения линии
   ObjectSetInteger(0,name,OBJPROP_STYLE,STYLE_SOLID);
//--- установим толщину линии
   ObjectSetInteger(0,name,OBJPROP_WIDTH,2);
//--- включим (true) или отключим (false) режим продолжения отображения линии вправо
   ObjectSetInteger(0,name,OBJPROP_RAY_RIGHT,false);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double ZZPrice(int ne=0)
  {
   double zz;
   int    i,k=iBars(NULL,0),ke=0;

   for(i=1; i<k; i++)
     {
      zz=iCustom(NULL,0,"ZigZag",12,5,3,0,i);
      if(zz!=0)
        {
         ke++;
         if(ke>ne) return(zz);
        }
     }
   Print("GetExtremumZZPrice(): Экстремум ЗигЗага номер ",ne," не найден");
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int ZZBar(int ne=0)
  {
   double zz;
   int    i,k=iBars(NULL,0),ke=0;

   for(i=0; i<k; i++)
     {
      zz=iCustom(NULL,0,"ZigZag",12,5,3,0,i);
      if(zz!=0)
        {
         ke++;
         if(ke>ne) return(i);
        }
     }
   Print("GetExtremumZZBar(): Экстремум ЗигЗага номер ",ne," не найден");
   return(-1);
  }
//+------------------------------------------------------------------+
//| 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[])
  {
//---
   PutTrend((string)time[0],time[ZZBar(0)],ZZPrice(0),time[ZZBar(1)],ZZPrice(1));
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+