CaudateCandle

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

//|                                                CaudateCandle.mq5 |

//|                                      Copyright © 2018, Scriptong |

//|                                          http://advancetools.net |

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

//---- 02B>@AB2> 8=48:0B>@0

#property copyright "Copyright © 2018, Scriptong"

//---- AAK;:0 =0 A09B 02B>@0

#property link      "http://advancetools.net"

//---- =><5@ 25@A88 8=48:0B>@0

#property version   "1.00"

//---- >B@8A>2:0 8=48:0B>@0 2 >A=>2=>< >:=5

#property indicator_chart_window

//---- 4;O @0AGQB0 8 >B@8A>2:8 8=48:0B>@0 8A?>;L7>20=> ?OBL 1CD5@>2

#property indicator_buffers 5

//---- 8A?>;L7>20=> 2A53> >4=> 3@0D8G5A:>5 ?>AB@>5=85

#property indicator_plots   1

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

//|  0@0<5B@K >B@8A>2:8 8=48:0B>@0              |

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

//---- 2 :0G5AB25 8=48:0B>@0 8A?>;L7>20=K F25B=K5 A25G8

#property indicator_type1   DRAW_COLOR_CANDLES

#property indicator_color1  clrDeepSkyBlue,clrBlue,clrGray,clrMaroon,clrOrchid

//---- >B>1@065=85 <5B:8 8=48:0B>@0

#property indicator_label1  "CaudateOpen;CaudateHigh;CaudateLow;CaudateClose"

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

//| >1JO2;5=85 :>=AB0=B                          |

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

#define RESET 0                                    // >=AB0=B0 4;O 2>72@0B0 B5@<8=0;C :><0=4K =0 ?5@5AG5B 8=48:0B>@0

#define TYPE_NO_TAIL     0                         // !25G0 157 E2>AB0

#define TYPE_HIGHER_TAIL 1                         // !25G0 A 25@E=8< E2>AB><         

#define TYPE_LOWER_TAIL  2                         // !25G0 A =86=8< E2>AB><

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

//| E>4=K5 ?0@0<5B@K 8=48:0B>@0                 |

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

input int    Shift=0; // A4283 8=48:0B>@0 ?> 3>@87>=B0;8 2 10@0E 

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

//---- >1JO2;5=85 48=0<8G5A:8E <0AA82>2, :>B>@K5 1C4CB 2 40;L=59H5< 8A?>;L7>20=K 2 :0G5AB25 8=48:0B>@=KE 1CD5@>2

double ExtOpenBuffer[];

double ExtHighBuffer[];

double ExtLowBuffer[];

double ExtCloseBuffer[];

double ExtColorsBuffer[];

//---- 1JO2;5=85 F5;KE ?5@5<5==KE =0G0;0 >BAGQB0 40==KE

int min_rates_total;

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

//| Custom indicator function ?@545;5=85 B8?0 A25G8                 |

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

int GetCandleType(int index,const double &Open[],const double &High[],const double &Low[],const double &Close[])

  {

//----

   double candleHalf=(High[index]+Low[index])/2;            // !5@548=0 2KA>BK A25G8



   if(Open[index]<candleHalf && Close[index]<candleHalf) // "5;> A25G8 =0E>48BAO 2 =86=59 ?>;>28=5 A25G8                        

      return(TYPE_HIGHER_TAIL);                             // 5@E=89 E2>AB



   if(Open[index]>candleHalf && Close[index]>candleHalf) // "5;> A25G8 =0E>48BAO 2 25@E=59 ?>;>28=5 A25G8                        

      return(TYPE_LOWER_TAIL);                              // 86=89 E2>AB

//----   

   return(TYPE_NO_TAIL);                                    // # A25G8 =5B E2>AB0

  }

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//---- =8F80;870F8O ?5@5<5==KE =0G0;0 >BAGQB0 40==KE

   min_rates_total=1;

//---- ?@52@0I5=85 48=0<8G5A:8E <0AA82>2 2 8=48:0B>@=K5 1CD5@K

   SetIndexBuffer(0,ExtOpenBuffer,INDICATOR_DATA);

   SetIndexBuffer(1,ExtHighBuffer,INDICATOR_DATA);

   SetIndexBuffer(2,ExtLowBuffer,INDICATOR_DATA);

   SetIndexBuffer(3,ExtCloseBuffer,INDICATOR_DATA);

//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 F25B>2>9, 8=45:A=K9 1CD5@   

   SetIndexBuffer(4,ExtColorsBuffer,INDICATOR_COLOR_INDEX);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAGQB0 >B@8A>2:8 8=48:0B>@0 1

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);

//---- CAB0=>2:0 7=0G5=89 8=48:0B>@0, :>B>@K5 =5 1C4CB 2848<K =0 3@0D8:5

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,NULL);

//---- 8=45:A0F8O M;5<5=B>2 2 1CD5@0E :0: 2 B09<A5@8OE   

   ArraySetAsSeries(ExtOpenBuffer,true);

   ArraySetAsSeries(ExtHighBuffer,true);

   ArraySetAsSeries(ExtLowBuffer,true);

   ArraySetAsSeries(ExtCloseBuffer,true);

   ArraySetAsSeries(ExtColorsBuffer,true);

//--- A>740=85 8<5=8 4;O >B>1@065=8O 2 >B45;L=>< ?>4>:=5 8 2> 2A?;K20NI59 ?>4A:07:5

   IndicatorSetString(INDICATOR_SHORTNAME,"Caudate_Candles");

//--- >?@545;5=85 B>G=>AB8 >B>1@065=8O 7=0G5=89 8=48:0B>@0

   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);

//--- 7025@H5=85 8=8F80;870F88

   return(INIT_SUCCEEDED);

  }

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

//| Custom indicator iteration function                              |

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

int OnCalculate(

                const int rates_total,    // :>;8G5AB2> 8AB>@88 2 10@0E =0 B5:CI5< B8:5

                const int prev_calculated,// :>;8G5AB2> 8AB>@88 2 10@0E =0 ?@54K4CI5< B8:5

                const datetime &time[],

                const double &open[],

                const double& high[],     // F5=>2>9 <0AA82 <0:A8<C<>2 F5=K 4;O @0AGQB0 8=48:0B>@0

                const double& low[],      // F5=>2>9 <0AA82 <8=8<C<>2 F5=K  4;O @0AGQB0 8=48:0B>@0

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[]

                )

  {

//---- ?@>25@:0 :>;8G5AB20 10@>2 =0 4>AB0B>G=>ABL 4;O @0AGQB0

   if(rates_total<min_rates_total) return(RESET);



//---- >1JO2;5=8O ;>:0;L=KE ?5@5<5==KE 

   int limit,bar;

   double;



//---- 8=45:A0F8O M;5<5=B>2 2 <0AA820E :0: 2 B09<A5@8OE  

   ArraySetAsSeries(open,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

   ArraySetAsSeries(close,true);



//---- @0AGQB AB0@B>2>3> =><5@0 first 4;O F8:;0 ?5@5AGQB0 10@>2

   if(prev_calculated>rates_total || prev_calculated<=0) // ?@>25@:0 =0 ?5@2K9 AB0@B @0AGQB0 8=48:0B>@0

     {

      limit=rates_total-min_rates_total; // AB0@B>2K9 =><5@ 4;O @0AGQB0 2A5E 10@>2

     }

   else

     {

      limit=rates_total-prev_calculated; // AB0@B>2K9 =><5@ 4;O @0AGQB0 =>2KE 10@>2

     }



//---- >A=>2=>9 F8:; @0AGQB0 8=48:0B>@0

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

     {

      switch(GetCandleType(bar,open,high,low,close)) // >;CG5=85 B8?0 A25G8

        {

         case TYPE_NO_TAIL: // !25G0 157 E2>AB0 =5 8=B5@5AC5B

            ExtOpenBuffer[bar]=NULL;

            ExtHighBuffer[bar]=NULL;

            ExtLowBuffer[bar]=NULL;

            ExtCloseBuffer[bar]=NULL;

            ExtColorsBuffer[bar]=2;

            break;



         case TYPE_LOWER_TAIL: // !25G0 A =86=8< E2>AB><

            ExtOpenBuffer[bar]=open[bar];

            ExtHighBuffer[bar]=high[bar];

            ExtLowBuffer[bar]=low[bar];

            ExtCloseBuffer[bar]=close[bar];

            if(open[bar]<=close[bar]) ExtColorsBuffer[bar]=0;

            else ExtColorsBuffer[bar]=1;

            break;



         case TYPE_HIGHER_TAIL: // !25G0 A 25@E=8< E2>AB><

            ExtOpenBuffer[bar]=open[bar];

            ExtHighBuffer[bar]=high[bar];

            ExtLowBuffer[bar]=low[bar];

            ExtCloseBuffer[bar]=close[bar];

            if(open[bar]>=close[bar]) ExtColorsBuffer[bar]=4;

            else ExtColorsBuffer[bar]=3;

            break;

        }

     }

//----     

   return(rates_total);

  }

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