Wilder Volatility System

//+------------------------------------------------------------------+
//|                                     Wilder Volatility System.mq4 |
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+

#property indicator_chart_window 
#property indicator_buffers 4 
#property indicator_color1 Red 
#property indicator_color2 Blue 
#property indicator_color3 Tomato
#property indicator_color4 DeepSkyBlue 


//---- input parameters //îáúÿâëåíèå ââîäèìûõ âíåøíèõ ïàðàìåòðîâ
extern int Range = 7; 
extern bool Chanel = true;//Ðèñóåì êàíàëû
extern bool Znachjk = true;// Åñëè true òî ðèñóåì çíà÷êè íàä Õàåì èëè ïîä Ëîó
                           // â ïðîòèâíîì ñëó÷àå íà ãðàíèöå êàíàëà
//---- buffers
double UpBuffer[]; 
double DnBuffer[]; 
double ChanelUp[]; 
double ChanelDn[]; 


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init() //èíèöèàëèçàöèÿ ïåðåìåííûõ
  {

//---- indicator line

   SetIndexStyle(0,DRAW_ARROW); 
   SetIndexArrow(0,251);
   SetIndexBuffer(0,UpBuffer);
   SetIndexEmptyValue(0,0.0);

   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,251);
   SetIndexBuffer(1,DnBuffer);
   SetIndexEmptyValue(1,0.0);

   SetIndexStyle(2,DRAW_LINE,0,2);
   SetIndexStyle(3,DRAW_LINE,0,2);
   SetIndexBuffer(2,ChanelUp);
   SetIndexBuffer(3,ChanelDn);
   SetIndexDrawBegin(2,0); //óñòàíîâêà íà÷àëüíîé òî÷êè ïðîðèñîâêè äëÿ 0 áóôåðà
   SetIndexDrawBegin(3,0); //óñòàíîâêà íà÷àëüíîé òî÷êè ïðîðèñîâêè äëÿ 1 áóôåðà
//----
   return(0); //âîçâðàò èç ñåêöèè èíèöèàëèçàöèè
  }
//+------------------------------------------------------------------+
//| PriceChannel                                                     |
//+------------------------------------------------------------------+
int start() //íà÷àëî ïðîãðàììû (ðàñ÷åòà)
  {
   int i; //îáúÿâëåíèå öåëî÷èñëåííîé ïåðåìåííîé i,k,sch
   double Up_Chanel, Dn_Chanel,H_Range,L_Range,H,L;
   int H_R,L_R;
   
   for(i=Bars-1;i>=0;i--)
   {
      H_R = iHighest(NULL,0,MODE_CLOSE,Range+1,i+1);
      L_R = iLowest(NULL,0,MODE_CLOSE,Range+1,i+1);       
      H_Range = Close[H_R];
      L_Range = Close[L_R];
      Up_Chanel = Close[H_R] - 2*iATR(NULL,0,Range+1,i);
      Dn_Chanel = Close[L_R] + 2*iATR(NULL,0,Range+1,i);
      H=High[i];
      L=Low[i]; 


      if(Chanel == true) // Ðèñóåì êàíàëû, åñëè íàäî :)
      {
         ChanelUp[i] = Up_Chanel; 
         ChanelDn[i] = Dn_Chanel; 
      }
   
  /*  
      if(Znachjk == true)//Ðèñóåì çíà÷åê íàä õàåì èëè ëîó òåêóùåãî áàðà
      {
         if (Close[i] > Up_Chanel) //H_Range) 
         {
             Comment("Up trend");
             UpBuffer[i] = EMPTY_VALUE;
             DnBuffer[i] = L;//Dn_Chanel;
             ChanelUp[i] = EMPTY_VALUE; 
             ChanelDn[i] = Dn_Chanel;
         }
         if (Close[i] < Dn_Chanel) //L_Range)// ???? Âîçìîæíî èìåëîñü ââèäó Close[i] < H_Range  ??????? 
         {
             Comment("Down trend");
             UpBuffer[i] = H;//Up_Chanel;
             DnBuffer[i] = EMPTY_VALUE;
             ChanelUp[i] = Up_Chanel; 
             ChanelDn[i] = EMPTY_VALUE;
         }
       }
       else//Ðèñóåì çíà÷åê íà ãðàíèöå êàíàëà
       {
         if (Close[i] > H_Range) 
         {
             Comment("Up trend");
             UpBuffer[i] = EMPTY_VALUE;
             DnBuffer[i] = Dn_Chanel;
         }
         if (Close[i] < L_Range)// ???? Âîçìîæíî èìåëîñü ââèäó Close[i] < H_Range  ??????? 
         {
             Comment("Down trend");
             UpBuffer[i] = Up_Chanel;
             DnBuffer[i] = EMPTY_VALUE;
         }
       }  
      */   
   }
   
   return(0);
  }
//+------------------------------------------------------------------+