//+------------------------------------------------------------------+
//|                                          T3 TRIX (ROC of T6).mq4 |
//|                      convert FinGeR Alex orginal by Luis Damiani |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "convert FinGeR Alex orginal by Luis Damiani"
#property link      ""

#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 DeepSkyBlue  
#property indicator_color2 Blue
//---- input parameters
extern int       A_t3_period=18;
extern int       num_bars=350;
extern int       is_A_open_price=0;
extern int       B_t3_period_ac=10;
extern int       diferential=0;
extern double    hot=0.7;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,ExtMapBuffer2);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {

int  shift=0;
double A_t3=0,A_t3_1=0,max_per=0;
double  B_t3=0,B_t3_1=0;
double e1=0,e2=0,e3=0,e4=0,e5=0,e6=0,c1=0,c2=0,c3=0,c4=0;
double e1x=0,e2x=0,e3x=0,e4x=0,e5x=0,e6x=0;
double d1=0,d2=0,d3=0,d4=0,d5=0,d6=0;
double d1x=0,d2x=0,d3x=0,d4x=0,d5x=0,d6x=0;
double n=0,A_w1=0,A_w2=0,B_w1=0,B_w2=0,b2=0,b3=0;
double init=true;
double bar=0, prevbars=0, start=0, cs=0, prevcs=0,frame=0;  
string commodt="nonono";
int    counted_bars=IndicatorCounted();

cs = num_bars+A_t3_period+is_A_open_price+B_t3_period_ac+diferential+hot; 

if (cs==prevcs && commodt==Symbol() && frame==Time[4]-Time[5] && Bars-prevbars<2)
start=Bars-prevbars;
else start=-1;   
commodt=Symbol();
frame=Time[4]-Time[5];
prevbars = Bars;
prevcs = cs;   
   
if (start==1 || start==0)  bar=start; else init=true;

if (init==true)
{
  b2=hot*hot;
  b3=b2*hot;
  c1=-b3;
  c2=(3*(b2+b3));
  c3=-3*(2*b2+hot+b3);
  c4=(1+3*hot+b3+3*b2);
  
  n=A_t3_period;

  if (n<1) n=1;
 
  n = 1 + 0.5*(n-1);
  A_w1 = 2 / (n + 1);
  A_w2 = 1 - A_w1;

 n=B_t3_period_ac;

  if (n<1) n=1;
  n = 1 + 0.5*(n-1);
  B_w1 = 2 / (n + 1);
  B_w2 = 1 - B_w1;

ExtMapBuffer1[num_bars-1]=0;


e1x=0;e2x=0;e3x=0;e4x=0;e5x=0;e6x=0;

ExtMapBuffer2[num_bars-1]=0; 

d1x=0;d2x=0;d3x=0;d4x=0;d5x=0;d6x=0;

// max_per=max(A_t3_period,B_t3_period_ac);
bar=num_bars-2;
init=false;
}

   

//SetLoopCount(0);
shift=bar; 

while(shift>=0)

{

 if ( is_A_open_price==1 ) d1 = A_w1*Open[shift] + A_w2*d1x;
  else d1 = A_w1*Close[shift] + A_w2*d1x;
  d2 = A_w1*d1 + A_w2*d2x;
  d3 = A_w1*d2 + A_w2*d3x;
  d4 = A_w1*d3 + A_w2*d4x;
  d5 = A_w1*d4 + A_w2*d5x;
  d6 = A_w1*d5 + A_w2*d6x;

  A_t3 = c1*d6 + c2*d5 + c3*d4 + c4*d3;

 
if ((start==1 && shift==1) || start==-1  )
{  
 
  d1x=d1;
  d2x=d2;
  d3x=d3;
  d4x=d4;
  d5x=d5;
  d6x=d6;
  }
  e1 = B_w1*Close[shift] + B_w2*e1x;
  e2 = B_w1*e1 + B_w2*e2x;
  e3 = B_w1*e2 + B_w2*e3x;
  e4 = B_w1*e3 + B_w2*e4x;
  e5 = B_w1*e4 + B_w2*e5x;
  e6 = B_w1*e5 + B_w2*e6x;
B_t3 = c1*e6 + c2*e5 + c3*e4 + c4*e3;

  if(diferential==1)
  {

   ExtMapBuffer1[shift]=(A_t3-A_t3_1)/A_t3_1; 
   ExtMapBuffer2[shift]=(A_t3-A_t3_1)/A_t3_1+(B_t3-B_t3_1)/B_t3_1; 

  
  }
  else
  {

if ( B_t3_1 >0 && A_t3_1>0) {
ExtMapBuffer2[shift]=(B_t3-B_t3_1)/B_t3_1;
ExtMapBuffer1[shift]=(A_t3-A_t3_1)/A_t3_1;
}
  //Comment("0");

  }
  
 //Comment("  start: ",start,"  bar: ",bar,"\n",
//"frame: ",frame,"  num_bars:" ,num_bars," commodity: ",commodt ,"\n",(B_t3-B_t3_1)/B_t3_1);
 
if ((start==1 && shift==1) || start==-1) 
{  
//Comment("Bar=ghfghfgh");  
  A_t3_1=A_t3;
  B_t3_1=B_t3; 
  e1x=e1;
  e2x=e2;
  e3x=e3;
  e4x=e4;
  e5x=e5;
  e6x=e6;
  
 }
 
  shift--;
//Comment("View !!!  NO?????");
   }
//----

 
  }
//+------------------------------------------------------------------+