#00_ZZ_Window

//+------------------------------------------------------------------+
//|                                                                  |
//|                                                                  |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net/"

#property indicator_separate_window
#property indicator_minimum -100
#property indicator_maximum 100
#property indicator_buffers 4
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_color3 Blue
#property indicator_color4 Red
//---- indicator parameters
extern int ExtDepth=12;
extern int ExtDeviation=5;
extern int ExtBackstep=3;
//---- indicator buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
double ExtMapBuffer5[];
double ExtMapBuffer6[];
double zz[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   IndicatorBuffers(7);
//---- drawing settings
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,119);
   SetIndexBuffer(0,ExtMapBuffer3);
   SetIndexEmptyValue(0,0.0);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,119);
   SetIndexBuffer(1,ExtMapBuffer4);
   SetIndexEmptyValue(1,0.0);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexBuffer(2,ExtMapBuffer5);
   SetIndexEmptyValue(2,0.0);
   SetIndexStyle(3,DRAW_LINE);
   SetIndexBuffer(3,ExtMapBuffer6);
   SetIndexEmptyValue(3,0.0);
//---- indicator buffers mapping
   SetIndexBuffer(4,ExtMapBuffer1);
   SetIndexBuffer(5,ExtMapBuffer2);
   SetIndexBuffer(6,zz);
   SetIndexEmptyValue(0,0.0);
   SetIndexEmptyValue(1,0.0);
   SetIndexEmptyValue(2,0.0);
   ArraySetAsSeries(ExtMapBuffer1,true);
   ArraySetAsSeries(ExtMapBuffer2,true);
//---- indicator short name
IndicatorShortName("00 Zig Zag");
//---- initialization done
   return(0);
  }
  int deinit() {return(0);}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int start()
  {
   int    shift, back,lasthighpos,lastlowpos;
   double val,res;
   double curlow,curhigh,lasthigh,lastlow;
   bool signal;
   int i;

   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=ExtMapBuffer1[shift+back];
               if((res!=0)&&(res>val)) ExtMapBuffer1[shift+back]=0.0; 
              }
           }
        } 
      ExtMapBuffer1[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=ExtMapBuffer1[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) ExtMapBuffer1[lastlowpos]=0;
            else ExtMapBuffer1[shift]=0;
           }
         //---
         if((curlow<lastlow)||(lastlow<0))
           {
            lastlow=curlow;
            lastlowpos=shift;
           } 
         lasthigh=-1;
        }
     }
  
   for(shift=Bars-1; shift>=0; shift--)
     {
      if(shift>=Bars-ExtDepth) {ExtMapBuffer1[shift]=0.0;ExtMapBuffer2[shift]=0.0;}
      else
        {
         if (ExtMapBuffer1[shift]>0) {signal=true;}
         res=ExtMapBuffer2[shift];
         if(res!=0.0) {ExtMapBuffer1[shift]=res;signal=false;}
        }
        if (signal)
          {  
           zz[shift]=-1;
          }
        else 
          {
           zz[shift]=1;
          }
     }
     
// âûâîä  

   for(shift=Bars-4; shift>=0; shift--)
     {
      if (zz[shift]<0) 
        {

         if (zz[shift+2]>0)
           {
            if (zz[shift+1]>0)
              {
               ExtMapBuffer4[shift+1]=-70;
               ExtMapBuffer6[shift+1]=-70;
               ExtMapBuffer4[shift]=-90;
               ExtMapBuffer6[shift]=-90;
               ExtMapBuffer3[shift]=-90;
               ExtMapBuffer5[shift]=-90;
              }
            else
              {
               ExtMapBuffer3[shift]=-30;
               ExtMapBuffer5[shift]=-30;
              }
           }
         else
           {
            if (zz[shift+1]>0)
              {
               ExtMapBuffer3[shift]=-90;
               ExtMapBuffer5[shift]=-90;
               ExtMapBuffer4[shift]=-90;
               ExtMapBuffer6[shift]=-90;
              }
            else
              {
               ExtMapBuffer3[shift]=0.001;
               ExtMapBuffer5[shift]=0.001;
              }
           }

        }
      else 
        {
         if (zz[shift+2]>0)
           {
            if (zz[shift+1]>0)
              {
               ExtMapBuffer4[shift]=0.001;
               ExtMapBuffer6[shift]=0.001;
              }
            else
              {
               ExtMapBuffer3[shift]=90;
               ExtMapBuffer5[shift]=90;
               ExtMapBuffer4[shift]=90;
               ExtMapBuffer6[shift]=90;
              }
           }
         else
           {
            if (zz[shift+1]>0)
              {
               ExtMapBuffer4[shift]=30;
               ExtMapBuffer6[shift]=30;
              }
            else
              {
               ExtMapBuffer3[shift+1]=70;
               ExtMapBuffer5[shift+1]=70;
               ExtMapBuffer3[shift]=90;
               ExtMapBuffer5[shift]=90;
               ExtMapBuffer4[shift]=90;
               ExtMapBuffer6[shift]=90;
              }
           }
        }

     }
  }