trendmagic_v1

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

//|                                                   TrendMagic.mq5 |

//|                                 Copyright © 2014, Sergey Gritsai |

//|                                               sergey1294@list.ru |

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

#property copyright "Copyright © 2014, Sergey Gritsai"

#property link "sergey1294@list.ru"

//--- indicator version

#property version   "1.00"

//--- drawing the indicator in the main window

#property indicator_chart_window 

//---- number of indicator buffers

#property indicator_buffers 2 

//--- one plot is used

#property indicator_plots   1

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

//|  Indicator drawing parameters     |

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

//--- drawing the indicator as a multicolored line

#property indicator_type1   DRAW_COLOR_LINE

//--- the following colors are used in a three-color line

#property indicator_color1  clrGreen,clrMagenta

//--- the indicator line is a continuous curve

#property indicator_style1  STYLE_SOLID

//--- indicator line width is 2

#property indicator_width1  2

//--- displaying the indicator label

#property indicator_label1  "TrendMagic"

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

//| declaration of constants          |

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

#define RESET  0 // the constant for getting the command for the indicator recalculation back to the terminal

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

//|  Indicator input parameters       |

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

input uint CCI_Period=50;                         // CCI period

input ENUM_APPLIED_PRICE   CCIPrice=PRICE_MEDIAN; // CCI price

input uint ATR_Period=5;                          // ATR period

input int Shift=0;                                // Horizontal shift of the indicator in bars

input int PriceShift=0;                           // Vertical shift of the indicator in points

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

//--- declaration of dynamic arrays that

//--- will be used as indicator buffers

double IndBuffer[];

double ColorIndBuffer[];

//--- declaring the variable of the value of the MA vertical shift

double dPriceShift;

//--- declaration of integer variables for the start of data calculation

int min_rates_total;

//--- declaration of integer variables for the indicators handles

int CCI_Handle,ATR_Handle;

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

//| Custom indicator initialization function                         | 

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

int OnInit()

  {

//--- initialization of variables of data calculation start

   min_rates_total=int(MathMax(CCI_Period,ATR_Period));

//---- getting handle of the iCCI indicator

   CCI_Handle=iCCI(NULL,0,CCI_Period,CCIPrice);

   if(CCI_Handle==INVALID_HANDLE)

     {

      Print(" Failed to get handle of the iCCI indicator");

      return(INIT_FAILED);

     }

//--- getting handle of the iATR indicator

   ATR_Handle=iATR(NULL,0,ATR_Period);

   if(ATR_Handle==INVALID_HANDLE)

     {

      Print(" Failed to get the iATR indicator handle");

      return(INIT_FAILED);

     }

//--- initialization of the vertical shift

   dPriceShift=_Point*PriceShift;

//--- set dynamic array as an indicator buffer

   SetIndexBuffer(0,IndBuffer,INDICATOR_DATA);

//--- indexing elements in the buffer as in timeseries

   ArraySetAsSeries(IndBuffer,true);

//--- Setting a dynamic array as a color index buffer   

   SetIndexBuffer(1,ColorIndBuffer,INDICATOR_COLOR_INDEX);

//--- indexing elements in the buffer as in timeseries

   ArraySetAsSeries(ColorIndBuffer,true);

//--- shifting the indicator 1 horizontally

   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);

//--- shifting the start of drawing of the indicator

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);

//--- setting the indicator values that won't be visible on a chart

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0);

   string shortname;

//--- initializations of a variable for the indicator short name

   StringConcatenate(shortname,"TrendMagic(",CCI_Period,", ",ATR_Period,")");

//--- creation of the name to be displayed in a separate sub-window and in a pop up help

   IndicatorSetString(INDICATOR_SHORTNAME,shortname);

//--- determining the accuracy of the indicator values

   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);

//--- initialization end

   return(INIT_SUCCEEDED);

  }

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

//| Custom indicator iteration function                              | 

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

int OnCalculate(const int rates_total,    // number of bars in history at the current tick

                const int prev_calculated,// amount of history in bars at the previous tick

                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[])

  {

//--- checking if the number of bars is enough for the calculation

   if(BarsCalculated(CCI_Handle)<rates_total

      || BarsCalculated(ATR_Handle)<rates_total

      || rates_total<min_rates_total) return(RESET);

//--- declarations of local variables 

   int to_copy,limit,bar;

   double CCI[],ATR[];

//--- calculations of the necessary amount of data to be copied

//--- and the 'limit' starting index for the bars recalculation loop

   if(prev_calculated>rates_total || prev_calculated<=0)// checking for the first start of calculation of an indicator

     {

      limit=rates_total-2; // Starting index for the calculation of all bars

     }

   else

     {

      limit=rates_total-prev_calculated; // starting index for the calculation of new bars

     }

   to_copy=limit+1;

//--- copy newly appeared data in the arrays

   if(CopyBuffer(CCI_Handle,0,0,to_copy,CCI)<=0) return(RESET);

   if(CopyBuffer(ATR_Handle,0,0,to_copy,ATR)<=0) return(RESET);

//--- apply timeseries indexing to array elements  

   ArraySetAsSeries(CCI,true);

   ArraySetAsSeries(ATR,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

//--- main calculation loop of the indicator

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

     {

      if(CCI[bar]>=0.0)

        {

         IndBuffer[bar]=low[bar]-ATR[bar]+PriceShift;

         if(IndBuffer[bar]<IndBuffer[bar+1]) IndBuffer[bar]=IndBuffer[bar+1];

         ColorIndBuffer[bar]=0.0;

        }

      else if(CCI[bar]<0.0)

        {

         IndBuffer[bar]=high[bar]+ATR[bar]+PriceShift;

         if(IndBuffer[bar]>IndBuffer[bar+1]) IndBuffer[bar]=IndBuffer[bar+1];

         ColorIndBuffer[bar]=1.0;

        }

     }

//---     

   return(rates_total);

  }

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