//+------------------------------------------------------------------+
//| MQL to MQ4 by Maloma                         SmPriceBend-T01.mq4 |
//+------------------------------------------------------------------+

#property copyright "Copyright © 2006, HomeSoft-Tartan Corp."
#property  link     "spiky@sinet.spb.ru"

#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Gold
#property indicator_color2 Red
//---- indicator parameters
extern int mBar = 3000;
extern int per=21;
extern int t3_period=6;
extern double b=0.7;
extern double up=1;
extern double um=-1;
//---- indicator buffers
double Buffer1[];
double Buffer2[];

int init()
  {
//---- indicator buffers mapping  
    SetIndexBuffer(0,Buffer1);
    SetIndexBuffer(1,Buffer2);   
//---- drawing settings
    SetIndexStyle(0,DRAW_LINE,EMPTY,2);
    SetIndexArrow(0,217);
    SetIndexStyle(1,DRAW_LINE,EMPTY,2);
    SetIndexArrow(1,218);
//----
    SetIndexEmptyValue(0,0.0);
    SetIndexEmptyValue(1,0.0);
//---- name for DataWindow
    SetIndexLabel(0,"1st");
    SetIndexLabel(1,"2nd");
//---- initialization done   
    IndicatorShortName("PriceBend-T01");
   return(0);
  }
  

double e1,e2,e3,e4,e5,e6,c1,c2,c3,c4,n,w1,w2,b2,b3;
double matwo,manul,bend,trig=0.0001,t3_21,t3_120;
int shift;
bool ft=true;

int start()
{
 if (ft)
  {
   b2=b*b;
   b3=b2*b;
   c1=-b3;
   c2=(3*(b2+b3));
   c3=-3*(2*b2+b+b3);
   c4=(1+3*b+b3+3*b2);
   n=t3_period;

   if (n<1) n=1;
   n = 1 + 0.5*(n-1);
   w1 = 2 / (n + 1);
   w2 = 1 - w1;
   ft=false;
  }

 for (shift=mBar;shift>=0;shift--)
  {
   matwo=iMA(Symbol(),0,per,0,MODE_SMA,PRICE_CLOSE,shift+2);
   manul=iMA(Symbol(),0,per,0,MODE_SMA,PRICE_CLOSE,shift);

   bend=(manul-matwo)/Point;

   e1 = w1*bend + w2*e1;
   e2 = w1*e1 + w2*e2;
   e3 = w1*e2 + w2*e3;
   e4 = w1*e3 + w2*e4;
   e5 = w1*e4 + w2*e5;
   e6 = w1*e5 + w2*e6;
   
   t3_21 = c1*e6 + c2*e5 + c3*e4 + c4*e3;
   
   if (t3_21==0) t3_21=0.0001;
   Buffer1[shift]=t3_21;

   //n120=(n120nul-n120two)/point;
   //if n120=0 then n120=0.0001;
   if (t3_21>0) {trig=up;} else {trig=um;}
   Buffer2[shift]=trig;
  }
}