//+------------------------------------------------------------------+
//|                                                     T3 ALPHA.mq4 |
//|                                                                  |
//|                                                                  |
//+------------------------------------------------------------------+
#property indicator_separate_window
#property indicator_buffers 6
//----
#property indicator_color1 Yellow
#property indicator_color2 Red
#property indicator_color3 Magenta
#property indicator_color4 Aqua
#property indicator_color5 Green
#property indicator_color6 Blue
//----
extern int MA_Period_1=3;
extern int MA_Period_2=5;
extern int MA_Period_3=0; //8
extern int MA_Period_4=0; //12
extern int MA_Period_5=21;
extern int MA_Period_6=34;
//----
extern double b=0.7;
//----
double MapBuffer1[];
double MapBuffer2[];
double MapBuffer3[];
double MapBuffer4[];
double MapBuffer5[];
double MapBuffer6[];
//----
double e1[][7], e2[][7], e3[][7], e4[][7], e5[][7], e6[][7];
double c1[7], c2[7], c3[7], c4[7];
double n[7], w1[7], w2[7], b2[7], b3[7];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators setting
   SetIndexStyle(0, DRAW_LINE, STYLE_SOLID, 1, Yellow);
   SetIndexStyle(1, DRAW_LINE, STYLE_SOLID, 1, Red);
   SetIndexStyle(2, DRAW_LINE, STYLE_SOLID, 1, Magenta);
   SetIndexStyle(3, DRAW_HISTOGRAM, STYLE_SOLID, 0, Aqua);
   SetIndexStyle(4, DRAW_HISTOGRAM, STYLE_SOLID, 0, Green);
   SetIndexStyle(5, DRAW_LINE, STYLE_SOLID, 1, Blue);
   IndicatorDigits(MarketInfo(Symbol(), MODE_DIGITS));
   IndicatorShortName("T3 ALPHA");
   SetIndexDrawBegin(0, 100);
   SetIndexDrawBegin(1, 100);
   SetIndexDrawBegin(2, 100);
   SetIndexDrawBegin(3, 100);
   SetIndexDrawBegin(4, 100);
   SetIndexDrawBegin(5, 100);
   SetIndexBuffer(0, MapBuffer1);
   SetIndexBuffer(1, MapBuffer2);
   SetIndexBuffer(2, MapBuffer3);
   SetIndexBuffer(3, MapBuffer4);
   SetIndexBuffer(4, MapBuffer5);
   SetIndexBuffer(5, MapBuffer6);
//---- variable reset
   n[1]=MA_Period_1;
   n[2]=MA_Period_2;
   n[3]=MA_Period_3;
   n[4]=MA_Period_4;
   n[5]=MA_Period_5;
   n[6]=MA_Period_6;
//----
   for(int l=1; l < 7; l++)
     {
      //e2[l]=0; e3[l]=0; e4[l]=0; e5[l]=0; e6[l]=0;
      c1[l]=0; c2[l]=0; c3[l]=0; c4[l]=0;
      w1[l]=0; w2[l]=0;
      b2[l]=0; b3[l]=0;
      //----
      b2[l]=b*b;
      b3[l]=b2[l]*b;
      c1[l]=-b3[l];
      c2[l]=(3*(b2[l] + b3[l]));
      c3[l]=-3*(2*b2[l] + b + b3[l]);
      c4[l] =(1 + 3*b + b3[l] + 3*b2[l]);
      //----
      if(n[l] < 1)
         n[l]=1;
      n[l]=1 + 0.5*(n[l] - 1);
      w1[l]=2/(n[l] + 1);
      w2[l]=1 - w1[l];
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int limit, MB[], ii, i;
   int counted_bars=IndicatorCounted();
//----
   if(counted_bars < 0)
      return(-1);
   if(counted_bars > 0)
      counted_bars--;
   limit=(Bars - counted_bars) - 1;
//---- indicator calculation
   ArrayResize(e1, Bars + 1);
   ArrayResize(e2, Bars + 1);
   ArrayResize(e3, Bars + 1);
   ArrayResize(e4, Bars + 1);
   ArrayResize(e5, Bars + 1);
   ArrayResize(e6, Bars + 1);
//----
   for(i=limit; i>=0; i--)
     {
      for(ii=1; ii < 7; ii++)
        {
         e1[Bars-i][ii]=w1[ii]*Close[i] + w2[ii]*e1[(Bars-i)-1][ii];
         e2[Bars-i][ii]=w1[ii]*e1[Bars-i][ii] + w2[ii]*e2[(Bars-i)-1][ii];
         e3[Bars-i][ii]=w1[ii]*e2[Bars-i][ii] + w2[ii]*e3[(Bars-i)-1][ii];
         e4[Bars-i][ii]=w1[ii]*e3[Bars-i][ii] + w2[ii]*e4[(Bars-i)-1][ii];
         e5[Bars-i][ii]=w1[ii]*e4[Bars-i][ii] + w2[ii]*e5[(Bars-i)-1][ii];
         e6[Bars-i][ii]=w1[ii]*e5[Bars-i][ii] + w2[ii]*e6[(Bars-i)-1][ii];
         //----
         if(ii==1)
            MapBuffer1[i]=c1[ii]*e6[Bars-i][ii] + c2[ii]*e5[Bars-i][ii] +
            c3[ii]*e4[Bars-i][ii] + c4[ii]*e3[Bars-i][ii];
         if(ii==2)
            MapBuffer2[i]=c1[ii]*e6[Bars-i][ii] + c2[ii]*e5[Bars-i][ii] +
            c3[ii]*e4[Bars-i][ii] + c4[ii]*e3[Bars-i][ii];
         if(ii==3)
            MapBuffer3[i]=c1[ii]*e6[Bars-i][ii] + c2[ii]*e5[Bars-i][ii] +
            c3[ii]*e4[Bars-i][ii] + c4[ii]*e3[Bars-i][ii];
         if(ii==4)
            MapBuffer4[i]=c1[ii]*e6[Bars-i][ii] + c2[ii]*e5[Bars-i][ii] +
            c3[ii]*e4[Bars-i][ii] + c4[ii]*e3[Bars-i][ii];
         if(ii==5)
            MapBuffer5[i]=c1[ii]*e6[Bars-i][ii] + c2[ii]*e5[Bars-i][ii] +
            c3[ii]*e4[Bars-i][ii] + c4[ii]*e3[Bars-i][ii];
         if(ii==6)
            MapBuffer6[i]=c1[ii]*e6[Bars-i][ii] + c2[ii]*e5[Bars-i][ii] +
            c3[ii]*e4[Bars-i][ii] + c4[ii]*e3[Bars-i][ii];
        }
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+