DT-ZigZag-ATR

//+------------------------------------------------------------------+
//|                                                DT-ZigZag-ATR.mq4 |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, klot"
#property link      "klot@mail.ru"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Blue
//---- input parameters
extern int       depth=12;
extern int       perATR=12;
extern double     k=2;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexArrow(0,159);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexArrow(1,159);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()

  {
   int    limit, bigshift; 
   int    counted_bars=IndicatorCounted();
   double zigzag1,atr1;
//---- 
  // if (counted_bars<0) return(-1); 
    
   if (counted_bars>0) counted_bars--; 
    
   limit=Bars-counted_bars+100; 
    
   for (int i=limit; i>0; i--) 
   { 
      for (int cnt=i; cnt<(100+i); cnt++)
      {
         zigzag1=iCustom(NULL,0,"ZigZag",depth,5,3,0,cnt+1);
         if ( zigzag1!=0 ) break;
      }
      
   atr1=iATR(NULL,0,perATR,i);
   
   if (  iHigh(NULL,0,i+1)<=zigzag1  )  ExtMapBuffer2[i]=iLow(NULL,0,i)+k*atr1; else ExtMapBuffer2[i]=0.0;
   if (  iLow(NULL,0,i+1)>=zigzag1  )  ExtMapBuffer1[i]=iHigh(NULL,0,i)-k*atr1; else ExtMapBuffer1[i]=0.0;
   
   }
   Comment ("zigzag1 = ",zigzag1," limit = ",limit );
//----
   return(0);
  }
//+------------------------------------------------------------------+