Dots

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

//|                                                         Dots.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 indicator_chart_window

#property indicator_buffers 5

#property indicator_plots   2

//--- plot Up

#property indicator_label1  "Signal to Sell"

#property indicator_type1   DRAW_ARROW

#property indicator_color1  clrRed

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot Down

#property indicator_label2  "Signal to Buy"

#property indicator_type2   DRAW_ARROW

#property indicator_color2  clrGreen

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- input parameters

input uint           InpPeriod   =  6;          // Period

input ENUM_MA_METHOD InpMethod   =  MODE_SMA;   // Method

//--- indicator buffers

double         BufferUP[];

double         BufferDN[];

double         BufferMA[];

double         BufferUpSt[];

double         BufferDnSt[];

//--- global variables

int            period;

int            handle_ma;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- set global variables

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

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferDN,INDICATOR_DATA);

   SetIndexBuffer(1,BufferUP,INDICATOR_DATA);

   SetIndexBuffer(2,BufferMA,INDICATOR_CALCULATIONS);

   SetIndexBuffer(3,BufferUpSt,INDICATOR_CALCULATIONS);

   SetIndexBuffer(4,BufferDnSt,INDICATOR_CALCULATIONS);

//--- setting a code from the Wingdings charset as the property of PLOT_ARROW

   PlotIndexSetInteger(0,PLOT_ARROW,119);

   PlotIndexSetInteger(1,PLOT_ARROW,119);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"Dots("+(string)period+")");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferUP,true);

   ArraySetAsSeries(BufferDN,true);

   ArraySetAsSeries(BufferMA,true);

   ArraySetAsSeries(BufferUpSt,true);

   ArraySetAsSeries(BufferDnSt,true);

//--- create MA's handle

   ResetLastError();

   handle_ma=iMA(NULL,PERIOD_CURRENT,period,0,InpMethod,PRICE_CLOSE);

   if(handle_ma==INVALID_HANDLE)

     {

      Print("The iMA(",(string)period,") object was not created: Error ",GetLastError());

      return INIT_FAILED;

     }

//---

   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[])

  {

//--- @>25@:0 =0 <8=8<0;L=>5 :>;85AB2> 10@>2 4;O @0AGQB0

   if(rates_total<4) return 0;

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

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

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

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-3;

      ArrayInitialize(BufferUP,EMPTY_VALUE);

      ArrayInitialize(BufferDN,EMPTY_VALUE);

      ArrayInitialize(BufferUpSt,EMPTY_VALUE);

      ArrayInitialize(BufferDnSt,EMPTY_VALUE);

      ArrayInitialize(BufferMA,0);

     }

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

   int copied=0,count=(limit==0 ? 1 : rates_total);

   copied=CopyBuffer(handle_ma,0,0,count,BufferMA);

   if(copied!=count) return 0;

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

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

     {

      double range=(high[i]-low[i])*0.8;

      BufferDnSt[i]=(BufferMA[i]>BufferMA[i+1] && BufferMA[i+1]>BufferMA[i+2] ? EMPTY_VALUE : BufferMA[i]);

      BufferUpSt[i]=(BufferMA[i]<BufferMA[i+1] && BufferMA[i+1]<BufferMA[i+2] ? EMPTY_VALUE : BufferMA[i]);

      BufferUP[i]=(BufferUpSt[i+1]==EMPTY_VALUE && BufferUpSt[i]!=EMPTY_VALUE ? low[i]-range/2 : EMPTY_VALUE);

      BufferDN[i]=(BufferDnSt[i+1]==EMPTY_VALUE && BufferDnSt[i]!=EMPTY_VALUE ? high[i]+range/2 : EMPTY_VALUE);

     }



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

   return(rates_total);

  }

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