//+------------------------------------------------------------------+
//|                                                        J2_MA.mq4 |
//|                                 Copyright © 2011,Dodonov Vitalii |
//|                                                  ellizii@mail.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2011,Dodonov Vitalii"
#property link      "ellizii@mail.ru"

#property indicator_chart_window
#property indicator_buffers 1
#property indicator_color1 Red
//--- input parameters
extern int       period=6;
extern int       method=3;
//--- buffers
double ExtMapBuffer1[];
double mass1[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
  IndicatorBuffers(2);
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexBuffer(1,mass1);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int    counted_bars=IndicatorCounted(),i=Bars-counted_bars-1;
  
   int periodf=Period();
   int tme=big_time(periodf);
   int ry=time(periodf);
   if(periodf<=0){Alert("Невозможно произвести расчет");return(0);}
   J2(tme/periodf,ry/periodf,tme/periodf,mass1);
  for(int t=0;t<=Bars-1;t++){
//----
   if(period>1){ExtMapBuffer1[t]=iMAOnArray(mass1,0,period,0,method,t);}else{ExtMapBuffer1[t]=mass1[t];}
//----
}
//Alert(mass1[2]);
   return(0);
  }
//+------------------------------------------------------------------+

int big_time(int period){
int pr;

if(period==1) pr=PERIOD_M15;
if(period==5) pr=PERIOD_H1;
if(period==15)pr=PERIOD_H4;
if(period==30) pr=PERIOD_D1;
if(period==60) pr=PERIOD_D1;
if(period==240) pr=PERIOD_W1;
if(period==1440) pr=PERIOD_MN1;
if(period==10080) pr=PERIOD_MN1;
if(period==43200) pr=-1;

return(pr);
}

int time(int period){
int pr;

if(period==1) pr=PERIOD_M5;
if(period==5) pr=PERIOD_M15;
if(period==15)pr=PERIOD_M30;
if(period==30) pr=PERIOD_H1;
if(period==60) pr=PERIOD_H4;
if(period==240) pr=PERIOD_D1;
if(period==1440) pr=PERIOD_W1;
if(period==10080) pr=PERIOD_MN1;
if(period==43200) pr=-1;

return(pr);
}

void J2(int period1,int period2, int period3,double &mass[]){

  int  y=Bars-IndicatorCounted()-1;
 while(y>=0){ 
 double ma1=0,ma2=0,ma3=0;
 ma1=iMA(NULL,0,period1,0,MODE_LWMA,6,y);
 ma2=iMA(NULL,0,period2,0,MODE_EMA,6,y);
 ma3=iMA(NULL,0,period3,0,MODE_LWMA,6,y);
 mass[y]=0.0;
 mass[y]=(2*ma2+((ma3+ma2)/2-ma1))/2;
  

y--;
}

}