Rex

ÿþ//+------------------------------------------------------------------+

//|                                                          Rex.mq5 |

//|                        Copyright 2018, MetaQuotes Software Corp. |

//|                                                 https://mql5.com |

//+------------------------------------------------------------------+

#property copyright "Copyright 2018, MetaQuotes Software Corp."

#property link      "https://mql5.com"

#property version   "1.00"

#property description "Rex oscillator"

#property indicator_separate_window

#property indicator_buffers 3

#property indicator_plots   2

//--- plot Rex

#property indicator_label1  "Rex"

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrGreen

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot Signal

#property indicator_label2  "Signal"

#property indicator_type2   DRAW_LINE

#property indicator_color2  clrRed

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- input parameters

input uint           InpPeriod      =  14;         // Rex period

input ENUM_MA_METHOD InpMethod      =  MODE_SMA;   // Rex method

input uint           InpPeriodSig   =  14;         // Signal period

input ENUM_MA_METHOD InpMethodSig   =  MODE_SMA;   // Signal method

//--- indicator buffers

double         BufferRex[];

double         BufferSignal[];

double         BufferTVB[];

//--- global variables

int            period_rex;

int            period_sig;

int            weight_sum;

//--- includes

#include <MovingAverages.mqh>

//+------------------------------------------------------------------+

//| Custom indicator initialization function                         |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- set global variables

   period_rex=int(InpPeriod<1 ? 1 : InpPeriod);

   period_sig=int(InpPeriodSig<2 ? 2 : InpPeriodSig);

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferRex,INDICATOR_DATA);

   SetIndexBuffer(1,BufferSignal,INDICATOR_DATA);

   SetIndexBuffer(2,BufferTVB,INDICATOR_CALCULATIONS);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"Rex ("+(string)period_rex+","+(string)period_sig+")");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferRex,true);

   ArraySetAsSeries(BufferSignal,true);

   ArraySetAsSeries(BufferTVB,true);

//---

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Custom indicator iteration function                              |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime &time[],

                const double &open[],

                const double &high[],

                const double &low[],

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[])

  {

//--- #AB0=>2:0 <0AA82>2 1CD5@>2 :0: B09<A5@89

   ArraySetAsSeries(open,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

   ArraySetAsSeries(close,true);

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   if(rates_total<4 || Point()==0) return 0;

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-1;

      ArrayInitialize(BufferRex,EMPTY_VALUE);

      ArrayInitialize(BufferSignal,EMPTY_VALUE);

      ArrayInitialize(BufferTVB,0);

     }

//--- >43>B>2:0 40==KE

   for(int i=limit; i>=0 && !IsStopped(); i--)

      BufferTVB[i]=3.0*close[i]-(low[i]+open[i]+high[i]);



//---  0AGQB 8=48:0B>@0

   switch(InpMethod)

     {

      case MODE_EMA  :  if(ExponentialMAOnBuffer(rates_total,prev_calculated,0,period_rex,BufferTVB,BufferRex)==0) return 0;               break;

      case MODE_SMMA :  if(SmoothedMAOnBuffer(rates_total,prev_calculated,0,period_rex,BufferTVB,BufferRex)==0) return 0;                  break;

      case MODE_LWMA :  if(LinearWeightedMAOnBuffer(rates_total,prev_calculated,0,period_rex,BufferTVB,BufferRex,weight_sum)==0) return 0; break;

      //---MODE_SMA

      default        :  if(SimpleMAOnBuffer(rates_total,prev_calculated,0,period_rex,BufferTVB,BufferRex)==0) return 0;                    break;

     }

   switch(InpMethod)

     {

      case MODE_EMA  :  if(ExponentialMAOnBuffer(rates_total,prev_calculated,period_rex,period_sig,BufferRex,BufferSignal)==0) return 0;               break;

      case MODE_SMMA :  if(SmoothedMAOnBuffer(rates_total,prev_calculated,period_rex,period_sig,BufferRex,BufferSignal)==0) return 0;                  break;

      case MODE_LWMA :  if(LinearWeightedMAOnBuffer(rates_total,prev_calculated,period_rex,period_sig,BufferRex,BufferSignal,weight_sum)==0) return 0; break;

      //---MODE_SMA

      default        :  if(SimpleMAOnBuffer(rates_total,prev_calculated,period_rex,period_sig,BufferRex,BufferSignal)==0) return 0;                    break;

     }



//--- return value of prev_calculated for next call

   return(rates_total);

  }

//+------------------------------------------------------------------+