//+------------------------------------------------------------------+
//|                                                 Dynamyc MACD.mq4 |
//|                                  Copyright © 2010, Yury Zinoviev |
//|                                          zinoviev.yury@gmail.com |
//+------------------------------------------------------------------+
#property copyright "Yury Zinoviev"
#property link      "http://forex-memory.blogspot.com/"

#property  indicator_separate_window
#property  indicator_buffers 3

#property  indicator_color1  DimGray
#property  indicator_color2  Silver
#property  indicator_color3  Red

#property  indicator_width1  2

extern int Depth=12;
extern int smooth=5;
extern double factor=4;
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
extern int MaxBars=600;

double     MacdBuffer[];
double     MacdBuffer2[];
double     SignalBuffer[];
static int pres=52;


int init()
  {

   SetIndexStyle(0,DRAW_HISTOGRAM);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexDrawBegin(1,SignalSMA);
   IndicatorDigits(Digits+1);

   SetIndexBuffer(0,MacdBuffer2);
   SetIndexBuffer(1,MacdBuffer);
   SetIndexBuffer(2,SignalBuffer);

   IndicatorShortName("dMACD("+FastEMA+","+SlowEMA+","+SignalSMA+")");
   SetIndexLabel(0,"Hysto");
   SetIndexLabel(1,"MACD");
   SetIndexLabel(2,"Signal");
   
//   ArrayInitialize(MacdBuffer2,0);
//   ArrayInitialize(MacdBuffer,0);
//   ArrayInitialize(SignalBuffer,0);

   return(0);
  }

int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();

   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
   

   int j=0;
   for(int i=0; i<limit; i++)
      {
//      MacdBuffer[i]=iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i);
         int l=getLoopWide(i);
         int _FastEMA=l/2; int _SlowEMA=l;
         if(l<2) {_FastEMA=FastEMA; _SlowEMA=SlowEMA;}
         MacdBuffer2[i]=getMACD(i,_FastEMA,_SlowEMA,SignalSMA,PRICE_CLOSE,MODE_MAIN); 
         
         j++;
         if(j>MaxBars) break;
       }       

   j=0;
   for(i=0; i<limit; i++)
      {
//      MacdBuffer[i]=iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i);
         
         MacdBuffer[i]=iMAOnArray(MacdBuffer2,Bars,smooth,0,MODE_SMA,i); 
         
         j++;
         if(j>MaxBars) break;
       }       




   j=0;
   for(i=0; i<limit; i++)
      {
      SignalBuffer[i]=iMAOnArray(MacdBuffer,Bars,SignalSMA,0,MODE_SMA,i);

/*
         l=getLoopWide(i);
         _FastEMA=l/2; _SlowEMA=l;
         if(l<2) {_FastEMA=FastEMA; _SlowEMA=SlowEMA;}

         SignalBuffer[i]=getMACD(i,_FastEMA,_SlowEMA,SignalSMA,PRICE_CLOSE,MODE_SIGNAL);  
*/              
         j++;
         if(j>MaxBars) break;
        
       }
      IndicatorShortName("dMACD("+_FastEMA+","+_SlowEMA+","+SignalSMA+")");

Comment("\n" + "dMACD\n" + "Fast: " + _FastEMA + "\nSlow: " + _SlowEMA + "\nSignal: " + SignalSMA);
   return(0);
  }
//+------------------------------------------------------------------+

double getMACD(int i,int fast,int slow,int signal,int price,int mode)
   {
      double mm=iMACD(Symbol(),0,fast,slow,signal,price,mode,i);
      return(mm);
   }
   
int getLoopWide(int j)
   {
   int max=101;
   
   for(int i=j;i<=j+max;i++)
      {
         double zz=iCustom(Symbol(),0,"ZigZag_fx",Depth,0,i);
         if(zz!=0) break;
      }
   
   int p1=i;
   
   for(i=p1+1;i<=p1+max;i++)
      {
          zz=iCustom(Symbol(),0,"ZigZag_fx",Depth,0,i);
         if(zz!=0) break;
      }
   
   int p2=i;

   for(i=p2+1;i<=p2+max;i++)
      {
          zz=iCustom(Symbol(),0,"ZigZag_fx",Depth,0,i);
         if(zz!=0) break;
      }
      
   int p3=i;

   for(i=p3+1;i<=p3+max;i++)
      {
          zz=iCustom(Symbol(),0,"ZigZag_fx",Depth,0,i);
         if(zz!=0) break;
      }
      
   int p4=i;

   for(i=p4+1;i<=p4+max;i++)
      {
          zz=iCustom(Symbol(),0,"ZigZag_fx",Depth,0,i);
         if(zz!=0) break;
      }
      
   int p5=i;

   for(i=p5+1;i<=p5+max;i++)
      {
          zz=iCustom(Symbol(),0,"ZigZag_fx",Depth,0,i);
         if(zz!=0) break;
      }
      
   int p6=i;

   int res=((p5-p1)+(p6-p2))/factor;
   
//Print("res=" + res);  
   int res2=(res+pres)/2;
   pres=res;
   return(res2);
   }