TD Pivot

//+------------------------------------------------------------------+
//|                                                     TD Pivot.mq4 |
//+------------------------------------------------------------------+
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 RoyalBlue
#property indicator_color2 OrangeRed

//---- buffers
double high[],
       low[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
{
   IndicatorShortName("TD Pivot");
//---- indicators
   SetIndexLabel (0,"High");
   SetIndexStyle (0,DRAW_LINE);
   SetIndexBuffer(0,high);
   SetIndexLabel (1,"Low");
   SetIndexStyle (1,DRAW_LINE);
   SetIndexBuffer(1,low);
//----
   return(0);
}

//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
{
//----
   for (int i = Bars-IndicatorCounted(); i >= 0; i--)
   {
      if(TimeHour(iTime(NULL,0,i)) != 0)
      {
         high[i] = high[i+1];
         low[i]  = low[i+1];
         continue;
      }

      int candlesPerDay = PERIOD_D1/Period(),
          day           = MathFloor(i/candlesPerDay)+1;

      double H = iHigh(NULL,PERIOD_D1,day),
             L = iLow(NULL,PERIOD_D1,day),
             O = iOpen(NULL,PERIOD_D1,day),
             C = iClose(NULL,PERIOD_D1,day),
             X;

      if      (C < O)  X =   H + 2*L +   C;
      else if (C > O)  X = 2*H +   L +   C;
      else if (C ==O)  X =   H +   L + 2*C;

      high[i] = 0.5*X - L;
      low[i]  = 0.5*X - H;
   }
//----
   return(0);
}
//+------------------------------------------------------------------+