//+------------------------------------------------------------------+
//|                                             StepMA_Stoch_KV1.mq4 |
//|                           Copyright © 2005, TrendLaboratory Ltd. |
//|                                       E-mail: igorad2004@list.ru |
//|                           modified by Kalenzo -> simone@konto.pl |
//|                           modified by raduga  21.04.2006         |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, TrendLaboratory Ltd."
#property link      "E-mail: igorad2004@list.ru"

#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Green

//#property indicator_minimum -1
//#property indicator_maximum 1

//---- input parameters
extern int PeriodWATR=10;
extern double Kwatr=1.0000;
extern int HighLow=0;
extern int NumberOfBarsToCalculate = 500;
//---- indicator buffers
double LineMinBuffer[];
double LineMidBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
  int init()
  {
 Comment("");
//---- indicator line
   SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,2);
   SetIndexStyle(1,DRAW_HISTOGRAM,STYLE_SOLID,2);
   SetIndexBuffer(0,LineMinBuffer);
   SetIndexBuffer(1,LineMidBuffer);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
//---- name for DataWindow and indicator subwindow label
   //short_name="StepMA Stoch("+PeriodWATR+","+Kwatr+","+HighLow+")";
   
   SetIndexLabel(0,"StepMA Stoch 1");
   SetIndexLabel(1,"StepMA Stoch 2");
//----
   SetIndexDrawBegin(0,PeriodWATR);
   SetIndexDrawBegin(1,PeriodWATR);
   /**
   *raduga:
   *USELESS !!!! Throws "ArrayInitialization" Exception !!!!
   **/
   //======================================================
   //ArrayInitialize(LineMinBuffer,0);
   //ArrayInitialize(LineMidBuffer,0);
   SetIndexEmptyValue(0,0.0);
   SetIndexEmptyValue(1,0.0);
   //=====================================================
//----
   return(0);
  }

//+------------------------------------------------------------------+
//| StepMA_3D_v1                                                         |
//+------------------------------------------------------------------+
int start()
  {
      string short_name;
      short_name = "Max bars to count: |"+(Bars-1)+"| ";
      IndicatorShortName(short_name);

   int      i,shift,TrendMin,TrendMax,TrendMid;
   double   SminMin0,SmaxMin0,SminMin1,SmaxMin1,SumRange,dK,WATR0,WATRmax,WATRmin,WATRmid;
   double   SminMax0,SmaxMax0,SminMax1,SmaxMax1,SminMid0,SmaxMid0,SminMid1,SmaxMid1;
   double   linemin,linemax,linemid,Stoch1,Stoch2,bsmin,bsmax;
   //raduga : Variable theDelta - has a differense between two bsmin/max lines
   double theDelta;
   
   double prev_y = 0,prev_b = 0;
   	
   for(shift=NumberOfBarsToCalculate-1;shift>=0;shift--)
   {	
	SumRange=0;
	//raduga: initialization because of ZERO-DEVIDE ERROR
	//===============================
	Stoch1 = 0.0;
	Stoch2 = 0.0;
	//===============================
	for (i=PeriodWATR-1;i>=0;i--)
	    { 
       dK = 1+1.0*(PeriodWATR-i)/PeriodWATR;
       //raduga: MathAbs has no sense ragarding High - Low... Probably Close - open !!!!
       //SumRange+= dK*MathAbs(High[i+shift]-Low[i+shift]);
       SumRange+= dK*(High[i+shift]-Low[i+shift]);
       }
	WATR0 = SumRange/PeriodWATR;
	
	WATRmax=MathMax(WATR0,WATRmax);
	if (shift==NumberOfBarsToCalculate-1-PeriodWATR) WATRmin=WATR0;
	WATRmin=MathMin(WATR0,WATRmin);
	
	int StepSizeMin=MathRound(Kwatr*WATRmin/Point);
	int StepSizeMax=MathRound(Kwatr*WATRmax/Point);
	int StepSizeMid=MathRound(Kwatr*0.5*(WATRmax+WATRmin)/Point);
		
	if (HighLow>0)
	  {
	  SmaxMin0=Low[shift]+2*StepSizeMin*Point;
	  SminMin0=High[shift]-2*StepSizeMin*Point;
	  
	  SmaxMax0=Low[shift]+2*StepSizeMax*Point;
	  SminMax0=High[shift]-2*StepSizeMax*Point;
	  
	  SmaxMid0=Low[shift]+2*StepSizeMid*Point;
	  SminMid0=High[shift]-2*StepSizeMid*Point;
	  
	  if(Close[shift]>SmaxMin1) TrendMin=1; 
	  if(Close[shift]<SminMin1) TrendMin=-1;
	  
	  if(Close[shift]>SmaxMax1) TrendMax=1; 
	  if(Close[shift]<SminMax1) TrendMax=-1;
	  
	  if(Close[shift]>SmaxMid1) TrendMid=1; 
	  if(Close[shift]<SminMid1) TrendMid=-1;
	  }
	 
	if (HighLow == 0)
	  {
	  SmaxMin0=Close[shift]+2*StepSizeMin*Point;
	  SminMin0=Close[shift]-2*StepSizeMin*Point;
	  
	  SmaxMax0=Close[shift]+2*StepSizeMax*Point;
	  SminMax0=Close[shift]-2*StepSizeMax*Point;
	  
	  SmaxMid0=Close[shift]+2*StepSizeMid*Point;
	  SminMid0=Close[shift]-2*StepSizeMid*Point;
	  
	  if(Close[shift]>SmaxMin1) TrendMin=1; 
	  if(Close[shift]<SminMin1) TrendMin=-1;
	  
	  if(Close[shift]>SmaxMax1) TrendMax=1; 
	  if(Close[shift]<SminMax1) TrendMax=-1;
	  
	  if(Close[shift]>SmaxMid1) TrendMid=1; 
	  if(Close[shift]<SminMid1) TrendMid=-1;
	  }
	 	
	  if(TrendMin>0 && SminMin0<SminMin1) SminMin0=SminMin1;
	  if(TrendMin<0 && SmaxMin0>SmaxMin1) SmaxMin0=SmaxMin1;
		
	  if(TrendMax>0 && SminMax0<SminMax1) SminMax0=SminMax1;
	  if(TrendMax<0 && SmaxMax0>SmaxMax1) SmaxMax0=SmaxMax1;
	  
	  if(TrendMid>0 && SminMid0<SminMid1) SminMid0=SminMid1;
	  if(TrendMid<0 && SmaxMid0>SmaxMid1) SmaxMid0=SmaxMid1;
	  
	  
	  if (TrendMin>0) linemin=SminMin0+StepSizeMin*Point;
	  if (TrendMin<0) linemin=SmaxMin0-StepSizeMin*Point;
	  
	  if (TrendMax>0) linemax=SminMax0+StepSizeMax*Point;
	  if (TrendMax<0) linemax=SmaxMax0-StepSizeMax*Point;
	  
	  if (TrendMid>0) linemid=SminMid0+StepSizeMid*Point;
	  if (TrendMid<0) linemid=SmaxMid0-StepSizeMid*Point;
	  
	  bsmin=linemax-StepSizeMax*Point;
	  bsmax=linemax+StepSizeMax*Point;
	  //raduga: ZERO-DEVIDE-ERROR
	  //=============================
	  theDelta = bsmax-bsmin;
	  if(theDelta != 0) 
	  {
	     Stoch1=NormalizeDouble((linemin-bsmin)/theDelta,6);
	     Stoch2=NormalizeDouble((linemid-bsmin)/theDelta,6);
	  }
	  //==============================   
	  prev_y = (Stoch1 - Stoch2);
	  if(prev_y<0.0){
	     LineMinBuffer[shift] = prev_y;
	     LineMidBuffer[shift] = 0;
	     }
	  else if(prev_y>0.0){
	     LineMidBuffer[shift] = prev_y;
	     LineMinBuffer[shift] = 0;
	     }
	  
	  //prev_y = Stoch1;
	  //prev_b = Stoch2;
	  
	  
	  SminMin1=SminMin0;
	  SmaxMin1=SmaxMin0;
	  
	  SminMax1=SminMax0;
	  SmaxMax1=SmaxMax0;
	  
	  SminMid1=SminMid0;
	  SmaxMid1=SmaxMid0;
	 }
	return(0);	
 }