ZigZagFibonacci

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

//|                                        fukinagashi               |

//|                 Copyright © 2000-2007, MetaQuotes Software Corp. |

//|                                        http://www.metaquotes.ru  |

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

#property indicator_chart_window

#property indicator_buffers 1

#property indicator_color1 Red

//---- indicator parameters

extern int ExtDepth=12;

extern int ExtDeviation=5;

extern int ExtBackstep=3;

//---- indicator buffers

double ExtMapBuffer[];

double ExtMapBuffer2[];

int OldLastZigZag, OldPreviousZigZag;

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

//| Custom indicator initialization function                         |

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

int init()

  {

   IndicatorBuffers(2);

//---- drawing settings

   SetIndexStyle(0,DRAW_SECTION);

//---- indicator buffers mapping

   SetIndexBuffer(0,ExtMapBuffer);

   SetIndexBuffer(1,ExtMapBuffer2);

   SetIndexEmptyValue(0,0.0);

   ArraySetAsSeries(ExtMapBuffer,true);

   ArraySetAsSeries(ExtMapBuffer2,true);

//---- indicator short name

   IndicatorShortName("Fibodrawer");

//---- initialization done

   return(0);

  }

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

//|                                                                  |

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

  int deinit() 

  {

   ObjectDelete("Fibo");

   return 0;

  }

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

//|                                                                  |

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

int start()

  {

   int    shift, back,lasthighpos,lastlowpos;

   double val,res;

   double curlow,curhigh,lasthigh,lastlow;

//----

   for(shift=Bars-ExtDepth; shift>=0; shift--)

     {

      val=Low[Lowest(NULL,0,MODE_LOW,ExtDepth,shift)];

      if(val==lastlow) val=0.0;

      else

        {

         lastlow=val;

         if((Low[shift]-val)>(ExtDeviation*Point)) val=0.0;

         else

           {

            for(back=1; back<=ExtBackstep; back++)

              {

               res=ExtMapBuffer[shift+back];

               if((res!=0)&&(res>val)) ExtMapBuffer[shift+back]=0.0;

              }

           }

        }

      ExtMapBuffer[shift]=val;

      //--- high

      val=High[Highest(NULL,0,MODE_HIGH,ExtDepth,shift)];

      if(val==lasthigh) val=0.0;

      else

        {

         lasthigh=val;

         if((val-High[shift])>(ExtDeviation*Point)) val=0.0;

         else

           {

            for(back=1; back<=ExtBackstep; back++)

              {

               res=ExtMapBuffer2[shift+back];

               if((res!=0)&&(res<val)) ExtMapBuffer2[shift+back]=0.0;

              }

           }

        }

      ExtMapBuffer2[shift]=val;

     }

   // final cutting 

   lasthigh=-1; lasthighpos=-1;

   lastlow=-1;  lastlowpos=-1;

//----

   for(shift=Bars-ExtDepth; shift>=0; shift--)

     {

      curlow=ExtMapBuffer[shift];

      curhigh=ExtMapBuffer2[shift];

      if((curlow==0)&&(curhigh==0)) continue;

      //---

      if(curhigh!=0)

        {

         if(lasthigh>0)

           {

            if(lasthigh<curhigh) ExtMapBuffer2[lasthighpos]=0;

            else ExtMapBuffer2[shift]=0;

           }

         //---

         if(lasthigh<curhigh || lasthigh<0)

           {

            lasthigh=curhigh;

            lasthighpos=shift;

           }

         lastlow=-1;

        }

      //----

      if(curlow!=0)

        {

         if(lastlow>0)

           {

            if(lastlow>curlow) ExtMapBuffer[lastlowpos]=0;

            else ExtMapBuffer[shift]=0;

           }

         //---

         if((curlow<lastlow)||(lastlow<0))

           {

            lastlow=curlow;

            lastlowpos=shift;

           }

         lasthigh=-1;

        }

     }

   for(shift=Bars-1; shift>=0; shift--)

     {

      if(shift>=Bars-ExtDepth) ExtMapBuffer[shift]=0.0;

      else

        {

         res=ExtMapBuffer2[shift];

         if(res!=0.0) ExtMapBuffer[shift]=res;

        }

     }

   int i=0;

   int LastZigZag, PreviousZigZag;

   int h=0;

     while( ExtMapBuffer[h]==0 && ExtMapBuffer2[h]==0) 

     {

      h++;

     }

   LastZigZag=h;

   h++;

     while(ExtMapBuffer[h]==0 && ExtMapBuffer2[h]==0) 

     {

      h++;

     }

   PreviousZigZag=h;

     if (OldLastZigZag!=LastZigZag || OldPreviousZigZag!=PreviousZigZag) 

     {

      OldLastZigZag=LastZigZag;

      OldPreviousZigZag=PreviousZigZag;

      ObjectDelete("Fibo");

      ObjectCreate("Fibo", OBJ_FIBO, 0, Time[PreviousZigZag], ExtMapBuffer[LastZigZag], Time[LastZigZag], ExtMapBuffer[PreviousZigZag]);

     }

     return 0;

  }

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