//+------------------------------------------------------------------+
//|                                                      ExTrend.mq4 |
//|                           Copyright © 2006, Alex Sidd (Executer) |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, Alex Sidd (Executer)"
#property link      "mailto:work_st@mail.ru"
//----
#property indicator_separate_window
#property indicator_minimum -0.5
#property indicator_maximum 0.5
#property indicator_buffers 2
#property  indicator_color1  Green
#property  indicator_color2  Red
//----
double TrBufferUp[];
double TrBufferDn[];
//----
double FractUp1 = 0;
double FractUp2 = 0;
double FractDn1 = 0;
double FractDn2 = 0;
datetime FTimeUp1,FTimeUp2,FTimeDn1,FTimeDn2,curTime;
//+------------------------------------------------------------------+
//| ExTrend initialization function                                  |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
   IndicatorBuffers(2);
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,TrBufferUp);
   SetIndexDrawBegin(0,1);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,TrBufferDn);
   SetIndexDrawBegin(1,1);
   short_name="ExTrend";
   IndicatorShortName(short_name);
   SetIndexLabel(0,"Up_Line");
   SetIndexLabel(1,"Down_Line");
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| deinitialization function                                        |
//+------------------------------------------------------------------+
int deinit()
  {
   ObjectDelete("FractalLineUp");
   ObjectDelete("FractalLineDn");
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Level Calculate Function                                         |
//| функция взята из FractalLines Indicator                          |
//+------------------------------------------------------------------+
double LevelCalculate(double Price1,double Time1,double Price2,
                      double Time2,double NewTime)
  {
   double level;
   if(Time2!=Time1) // На всякий случай, чтобы не было деления на 0.
     {
      level=(NewTime-Time1);
      level=level*(Price2-Price1);
      level=level/double(Time2-Time1)+Price1;
     }
   else
      return(Price2);
   return(level);
  }
//+------------------------------------------------------------------+
//| Executer Trend Indicator                                         |
//+------------------------------------------------------------------+
int start()
  {
   int i,counted_bars=IndicatorCounted();
   double Fup,Fdn,positive,negative;
   i=Bars-counted_bars;
   if(counted_bars==0) i-=4;

   while(i>=0)
     {
      negative = 0;
      positive = 0;
      Fup = iFractals(NULL, 0, MODE_UPPER, i + 3);
      Fdn = iFractals(NULL, 0, MODE_LOWER, i + 3);
      if(Fup>0)
        {
         if(FractUp1==0 && FractUp2==0)
           {
            FractUp1 = Fup;
            FTimeUp1 = Time[i+3];
           }
         if(FractUp1!=0 && FractUp2==0 && FTimeUp1!=Time[i+3])
           {
            FractUp2 = Fup;
            FTimeUp2 = Time[i+3];
           }
         if(FractUp1!=0 && FractUp2!=0 && FTimeUp2!=Time[i+3])
           {
            FractUp1 = FractUp2;
            FTimeUp1 = FTimeUp2;
            FractUp2 = Fup;
            FTimeUp2 = Time[i+3];
           }
        }
      if(Fdn>0)
        {
         if(FractDn1==0 && FractDn2==0)
           {
            FractDn1 = Fdn;
            FTimeDn1 = Time[i+3];
           }
         if(FractDn1!=0 && FractDn2==0 && FTimeDn1!=Time[i+3])
           {
            FractDn2 = Fdn;
            FTimeDn2 = Time[i+3];
           }
         if(FractDn1!=0 && FractDn2!=0 && FTimeDn2!=Time[i+3])
           {
            FractDn1 = FractDn2;
            FTimeDn1 = FTimeDn2;
            FractDn2 = Fdn;
            FTimeDn2 = Time[i+3];
           }
        }
      if(FractUp1!=0 && FractUp2!=0)
        {
         double lvlup=LevelCalculate(FractUp1,FTimeUp1,FractUp2,FTimeUp2,Time[i]);
         ObjectCreate("FractalLineUp",OBJ_TREND,0,FTimeUp1,FractUp1,FTimeUp2,FractUp2);
         ObjectSet("FractalLineUp",OBJPROP_TIME1,FTimeUp1);
         ObjectSet("FractalLineUp",OBJPROP_PRICE1,FractUp1);
         ObjectSet("FractalLineUp",OBJPROP_TIME2,FTimeUp2);
         ObjectSet("FractalLineUp",OBJPROP_PRICE2,FractUp2);
         double y = (double(FTimeUp2 - FTimeUp1) )/ (240*60);
         double x = (FractUp2 - FractUp1)*(240);
         // if(x==0) x=1;
         positive=MathArctan(x/y);  //*180/3.14; //)
        }
      if(FractDn1!=0 && FractDn2!=0)
        {
         double lvldn=LevelCalculate(FractDn1,FTimeDn1,FractDn2,FTimeDn2,Time[i]);
         ObjectCreate("FractalLineDn",OBJ_TREND,0,FTimeDn1,FractDn1,FTimeDn2,FractDn2);
         ObjectSet("FractalLineDn",OBJPROP_TIME1,FTimeDn1);
         ObjectSet("FractalLineDn",OBJPROP_PRICE1,FractDn1);
         ObjectSet("FractalLineDn",OBJPROP_TIME2,FTimeDn2);
         ObjectSet("FractalLineDn",OBJPROP_PRICE2,FractDn2);
         double a = (double(FTimeDn2 - FTimeDn1)) / (240*60);
         double b = (FractDn2 - FractDn1)*(240);
         // if(b==0) b=1;
         negative=MathArctan(b/a);  //*180/3.14;
        }
      TrBufferUp[i+3]=positive;  //+negative;
      TrBufferDn[i+3]= negative;
      i--;
     }
   return(0);
  }
//+------------------------------------------------------------------+