SHI_SilverTrendSig_003

//+------------------------------------------------------------------+
//|                                           SHI_SilverTrendSig.mq4 |
//|          Copyright © 2003, VIAC.RU, OlegVS, GOODMAN, 2005 Shurka |
//|                                                 shforex@narod.ru |
//|                                                                  |
//|                                                                  |
//| Ïèøó ïðîãðàììû íà çàêàç                                          |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005-07, Shurka"
#property link      "http://shforex.narod.ru"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_width1 3
#property indicator_color2 Red
#property indicator_width2 3
#define  SH_BUY   1
#define  SH_SELL  -1

//---- Âõîäíûå ïàðàìåòðû
extern int     AllBars=0;//Äëÿ ñêîëüêè áàðîâ ñ÷èòàòü. 0 - äëÿ âñåõ.
extern int     Otstup=30;//Îòñòóï.
extern double  Per=9;//Ïåðèîä.
extern string note4 = "Arrow Type";
extern string note5 = "0=Thick, 1=Thin, 2=Hollow, 3=Round";
extern string note6 = "4=Fractal, 5=Diagonal Thin";
extern string note7 = "6=Diagonal Thick, 7=Diagonal Hollow";
extern string note8 = "8=Thumb, 9=Finger";
extern int ArrowType=3;

int            SH,NB,i,UD;
double         R,SHMax,SHMin;
double         BufD[];
double         BufU[];
//+------------------------------------------------------------------+
//| Ôóíêöèÿ èíèöèàëèçàöèè                                            |
//+------------------------------------------------------------------+
int init()
{
   // NB çàïèñûâàåì êîëè÷åñòâî áàðîâ äëÿ êîòîðûõ ñ÷èòàåì èíäèêàòîð
   if (Bars<AllBars+Per || AllBars==0) NB=Bars-Per; else NB=AllBars;
   IndicatorBuffers(2);
   IndicatorShortName("SHI_SilverTrendSig");

   if (ArrowType == 0) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 233);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 234);
   }
   else if (ArrowType == 1) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 225);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 226);
   }
   else if (ArrowType == 2) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 241);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 242);
   }
   else if (ArrowType == 3) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 221);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 222);
   }
   else if (ArrowType == 4) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 217);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 218);
   }
   else if (ArrowType == 5) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 228);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 230);
   }
   else if (ArrowType == 6) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 236);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 238);
   }
   else if (ArrowType == 7) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 246);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 248);
   }
   else if (ArrowType == 8) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 67);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 68);
   }
   else if (ArrowType == 9) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 71);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 72);
   }

   SetIndexBuffer(0,BufU);
   SetIndexBuffer(1,BufD);
   SetIndexDrawBegin(0,Bars-NB);//Èíäèêàòîð áóäåòîòîáðàæàòüñÿ òîëüêî äëÿ NB áàðîâ
   SetIndexDrawBegin(1,Bars-NB);
   ArrayInitialize(BufD,0.0);//Çàáü¸ì îáà áóôåðà íîëèêàìè. Èíà÷å áóäåò ìóñîð ïðè ñìåíå òàéìôðåéìà.
   ArrayInitialize(BufU,0.0);
   return(0);
}
//+------------------------------------------------------------------+
//| Ôóíêöèÿ äåèíèöèàëèçàöèè                                          |
//+------------------------------------------------------------------+
int deinit()
{
   return(0);
}
//+------------------------------------------------------------------+
//| Ñîáñíà èíäèêàòîð                                                 |
//+------------------------------------------------------------------+
int start()
{
   int CB=IndicatorCounted();
   /* Òóò âîò òà ñàìàÿ îïòèìèçàöèîííàÿ ôèøêà.  ÿçûê ââåäåíà ôóíêöèÿ, êîòîðàÿ âîçâðàùàåò êîëè÷åñòâî
   ïîñ÷èòàííûõ áàðîâ, ïðè÷¸ì î÷åíü õèòðî. Ïðè ïåðâîì âûçîâå èíäèêàòîðà ýòî 0, âñ¸ ïîíÿòíî, åù¸ íè÷åãî
   íå ñ÷èòàëîñü, à çàòåì âûäà¸ò êîëè÷åñòâî îáñ÷èòàííûõ áàðîâ ìèíóñ îäèí. Ò.å. åñëè âñåãî áàðîâ 100,
   òî ôóíêöèÿ âåðí¸ò 99. ß ââ¸ë òàêîé êîä, âûøå ó ìåíÿ îïðåäåëÿëàñü NB - êîë-âî áàðîâ ïîäëåæàùèõ
   îáñ÷¸òó.  ïðèíöèïå ýòîò ïàðàìåòð ìîæíî è âûêèíóòü, îäíàêî äëÿ òåõ êòî â òàíêå (I80286) ìîæíî
   è îñòàâèòü. Òàê âîò, çäåñü, ïðè ïåðâîì âûçîâå NB îñòà¸òñÿ ïðåæíåé, à ïðè ïîñëåäóþùèõ óìåíüøàåòñÿ
   äî ïîñëåäíåãî áàðà, ò.å. 1 èëè 2, íó èëè ñêîëüêî òàì îñòàëîñü ïîñ÷èòàòü*/
   if(CB<0) return(-1); else if(NB>Bars-CB) NB=Bars-CB;
   for (SH=1;SH<NB;SH++)//Ïðî÷¸ñûâàåì ãðàôèê îò 1 äî NB
   {
      for (R=0,i=SH;i<SH+10;i++) {R+=(10+SH-i)*(High[i]-Low[i]);}      R/=55;

      SHMax = High[Highest(NULL,0,MODE_HIGH,Per,SH)];
      SHMin = Low[Lowest(NULL,0,MODE_LOW,Per,SH)];
      if (Close[SH]<SHMin+(SHMax-SHMin)*Otstup/100 && UD!=SH_SELL) { BufU[SH]=Low[SH]-R*0.5; UD=SH_SELL; }
      if (Close[SH]>SHMax-(SHMax-SHMin)*Otstup/100 && UD!=SH_BUY) { BufD[SH]=High[SH]+R*0.5; UD=SH_BUY; }
   }
   return(0);
}