Dynamic_Trend

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

//|                                                Dynamic_Trend.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 "Dynamic Trend indicator"

#property indicator_chart_window

#property indicator_buffers 4

#property indicator_plots   3

//--- plot Line

#property indicator_label1  "Line"

#property indicator_type1   DRAW_COLOR_LINE

#property indicator_color1  clrBlue,clrRed,clrDarkGray

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot UP

#property indicator_label2  "UP"

#property indicator_type2   DRAW_ARROW

#property indicator_color2  clrBlue

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- plot DN

#property indicator_label3  "DN"

#property indicator_type3   DRAW_ARROW

#property indicator_color3  clrRed

#property indicator_style3  STYLE_SOLID

#property indicator_width3  1

//--- input parameters

input uint     InpPeriod   =  14;   // Period

input uint     InpPercent  =  10;   // Percent

//--- indicator buffers

double         BufferLine[];

double         BufferColors[];

double         BufferUP[];

double         BufferDN[];

//--- global variables

int            percent;

int            period;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- set global variables

   percent=(int)InpPercent;

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

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferLine,INDICATOR_DATA);

   SetIndexBuffer(1,BufferColors,INDICATOR_COLOR_INDEX);

   SetIndexBuffer(2,BufferUP,INDICATOR_DATA);

   SetIndexBuffer(3,BufferDN,INDICATOR_DATA);

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

   PlotIndexSetInteger(1,PLOT_ARROW,233);

   PlotIndexSetInteger(2,PLOT_ARROW,234);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"Dynamic Trend ("+(string)period+","+(string)percent+")");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting plot buffer parameters

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0);

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferLine,true);

   ArraySetAsSeries(BufferColors,true);

   ArraySetAsSeries(BufferUP,true);

   ArraySetAsSeries(BufferDN,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(close,true);

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

   if(rates_total<fmax(period,4)) return 0;

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

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-4;

      ArrayInitialize(BufferLine,0);

      ArrayInitialize(BufferUP,EMPTY_VALUE);

      ArrayInitialize(BufferDN,EMPTY_VALUE);

      BufferLine[limit]=close[limit];

     }



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

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

     {

      int bh=HighestClose(period,i+1);

      int bl=LowestClose(period,i+1);

      if(bl==WRONG_VALUE || bh==WRONG_VALUE)

         continue;

      

      BufferColors[i]=2;

      if(close[i]<BufferLine[i+1])

        {

         BufferLine[i]=close[bh]-percent*Point();

         BufferColors[i]=1;

        }

      else

        {

         BufferLine[i]=close[bl]+percent*Point();

         BufferColors[i]=0;

        }

      

      BufferUP[i]=BufferDN[i]=EMPTY_VALUE;



      if(close[i+3]>BufferLine[i+2] && close[i+2]<BufferLine[i+3])

         BufferUP[i]=open[i];



      if(close[i+2]<BufferLine[i+1] && close[i+2]>BufferLine[i+3])

         BufferDN[i]=open[i];

     }



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

   return(rates_total);

  }

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

//| >72@0I05B 8=45:A <0:A8<0;L=>3> 7=0G5=8O B09<A5@88 High          |

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

int HighestClose(const int count,const int start)

  {

   double array[];

   ArraySetAsSeries(array,true);

   return(CopyClose(Symbol(),PERIOD_CURRENT,start,count,array)==count ? ArrayMaximum(array)+start : WRONG_VALUE);

  }

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

//| >72@0I05B 8=45:A <8=8<0;L=>3> 7=0G5=8O B09<A5@88 Low            |

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

int LowestClose(const int count,const int start)

  {

   double array[];

   ArraySetAsSeries(array,true);

   return(CopyClose(Symbol(),PERIOD_CURRENT,start,count,array)==count ? ArrayMinimum(array)+start : WRONG_VALUE);

   return WRONG_VALUE;

  }

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