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Техническое задание
Есть индикатор и его исходный код, но он почему-то перерисовывает. Нужно чтобы если и перерисовывал то максимум на 1-2 бара.
Source code:
//+------------------------------------------------------------------+
//| fxfariz_scalpingM5.mq4 |
//| fxfariz a.k.a warrior trader |
//| fxfariz@gmail,com |
//+------------------------------------------------------------------+
#property copyright "fxfariz a.k.a warrior trader"
#property link "fxfariz@gmail,com"
- Alert improvement: swissly, post #2258
http://www.forexfactory.com/showthread.php?t=165948&page=151
- Name from: TudorGirl_Vorticity
//------------------------------------------------------------------*/
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_width1 2
#property indicator_width2 2
#property indicator_minimum 0.0
#property indicator_maximum 2.0
//-------------------------------------------------------------------
extern int period=8;
extern bool alarm=false;
extern int nBars = 200;
extern int arrowUP = 110;
extern int arrowDN = 110;
//-------------------------------------------------------------------
double ExtBuffer0[];
double ExtBuffer1[];
double ExtBuffer2[];
double alertBar;
double last;
int init()
{
IndicatorDigits(0);
IndicatorBuffers(3);
SetIndexBuffer(0,ExtBuffer1); SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0,arrowUP);
SetIndexBuffer(1,ExtBuffer2); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1,arrowDN);
SetIndexBuffer(2,ExtBuffer0);
IndicatorShortName("SwingMan Vorticity" +" ("+period+")");
SetIndexLabel(0,"Trend UP");
SetIndexLabel(1,"Trend DN");
return(0);
}
int start()
{
int limit;
// int counted_bars=IndicatorCounted();
double prev=0,current;
double Value=0,Fish1=0;
double price;
double MinL=0;
double MaxH=0;
// if(counted_bars>0) counted_bars--;
// limit=Bars-counted_bars;
limit = nBars;
//for(int i=0; i<Bars; i++)
for(int i=0; i<limit; i++) {
MaxH = High[Highest(NULL,0,MODE_HIGH,period,i)];
MinL = Low[Lowest(NULL,0,MODE_LOW,period,i)];
price = (High[i]+Low[i])/2;
if(MaxH-MinL == 0) Value = 0.33*2*(0-0.5) + 0.67*prev;
else Value = 0.33*2*((price-MinL)/(MaxH-MinL)-0.5) + 0.67*prev;
Value=MathMin(MathMax(Value,-0.999),0.999);
if(1-Value == 0) ExtBuffer0[i]=0.5+0.5*Fish1;
else ExtBuffer0[i]=0.5*MathLog((1+Value)/(1-Value))+0.5*Fish1;
prev=Value;
Fish1=ExtBuffer0[i];
}
bool trendUP = TRUE;
for (i = limit; i >= 0; i--) {
current = ExtBuffer0[i];
prev = ExtBuffer0[i + 1];
if ((current < 0.0 && prev > 0.0) || current < 0.0) trendUP = FALSE;
if ((current > 0.0 && prev < 0.0) || current > 0.0) trendUP = TRUE;
if (trendUP) {
ExtBuffer1[i] = 1.0;
ExtBuffer2[i] = EMPTY_VALUE;
if (alarm == true) {
if (i==0 && prev != 2 && ExtBuffer1[i] == 1.0 && Bars>alertBar) {
Alert("(smVorti) Trend Changing Down on ",Period()," ",Symbol());
alertBar = Bars;
last = 2;
}
}
}
else {
ExtBuffer2[i] = 1.0;
ExtBuffer1[i] = EMPTY_VALUE;
if (alarm == true) {
if (i==0 && last != 1 && ExtBuffer2[i] == 1.0 && Bars>alertBar) {
Alert("(smVorti) Trend Changing Up on ",Period()," ",Symbol());
alertBar = Bars;
last = 1;
}
}
}
}
return(0);
}