请教如何在指标中编写,在两线之间画线段

[cyli2018]

各位老师,思路如下:

1.当两线之间距离由大变小时,在K棒对应的两指标线之间画线段;

2.当两线之间距离由小变大时,在K棒对应的两指标线之间画线段;

我的指标代码如下:

#property indicator_chart_window

#property indicator_buffers 5

#property indicator_color1 White

#property indicator_color2 Yellow

#property indicator_color3 Yellow

//---- input parameters

extern int BBI_Ma1 = 3;

extern int BBI_Ma2 = 6;

extern int BBI_Ma3 = 12;

extern int BBI_Ma4 = 24;

extern int Boll_Ma = 50;

extern int Boll_P = 2;

extern int Ma_Method = 0;//=0:Simple moving average,=1:Exponential moving average,=2:Smoothed moving average,=3:Linear weighted moving average

//---- indicator buffers

double up[];

double lower[];

double BBI[];                              

double BBI_std[];//standard deviation       

double BBI_av[];//average                  

double BBI_av2[];                         

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

//| Custom indicator initialization function                         |

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

int init()

  {

//---- first positions skipped when drawing

   SetIndexDrawBegin(0,BBI_Ma4+Boll_Ma*2);

   SetIndexDrawBegin(1,BBI_Ma4+Boll_Ma*2);

   SetIndexDrawBegin(2,BBI_Ma4+Boll_Ma*2);

//---- 3 indicator buffers mapping   

   SetIndexBuffer(0,BBI);

   SetIndexBuffer(1,up);

   SetIndexBuffer(2,lower);

   SetIndexBuffer(3,BBI_std);

   SetIndexBuffer(4,BBI_av);

    SetIndexBuffer(5,BBI_av2);

//---- drawing settings

   SetIndexStyle(0,DRAW_NONE);

   SetIndexStyle(1,DRAW_LINE);

   SetIndexStyle(2,DRAW_LINE);

   SetIndexStyle(3,DRAW_NONE);

   SetIndexStyle(4,DRAW_NONE);

   SetIndexStyle(5,DRAW_NONE);

//---- index labels

   SetIndexLabel(0,"BBI_av");

   SetIndexLabel(1,"BBI UPR");

   SetIndexLabel(2,"BBI DWR");

   IndicatorShortName("BBIboll band");

   SetIndexEmptyValue(0,0);

   SetIndexEmptyValue(1,0);

   SetIndexEmptyValue(2,0);

   SetIndexEmptyValue(3,0);

   SetIndexEmptyValue(4,0);

   SetIndexEmptyValue(5,0);

   

//---- initialization done

   return(0);   

  }

  

int start()

  {

   int limit;

   int counted_bars=IndicatorCounted();   

   double ma1,ma2,ma3,ma4,std;

   

   if(Bars<BBI_Ma4+Boll_Ma*2)return(-1);

//---- check for possible errors

   if(counted_bars<0) return(-1);

//---- last counted bar will be recounted

   if(counted_bars>0) counted_bars--;

   limit=Bars-counted_bars;//+BBI_Ma4+Boll_Ma;

//---- main loop

   while(limit>-1)

     {

       ma1 = iMA(NULL,0,BBI_Ma1,0,Ma_Method,PRICE_CLOSE,limit);

       ma2 = iMA(NULL,0,BBI_Ma2,0,Ma_Method,PRICE_CLOSE,limit);

       ma3 = iMA(NULL,0,BBI_Ma3,0,Ma_Method,PRICE_CLOSE,limit);

       ma4 = iMA(NULL,0,BBI_Ma4,0,Ma_Method,PRICE_CLOSE,limit);

       BBI[limit] = 0.25 * (ma1 + ma2 + ma3 + ma4);    

           

       BBI_av[limit] = iMAOnArray(BBI,0,Boll_Ma,0,Ma_Method,limit);  

           

       limit --;

     }                                                    

                                                             

   limit=Bars-counted_bars;

   while(limit>-1)

     {

        

       BBI_av2[limit] = iMAOnArray(BBI_av,0,Boll_Ma,0,Ma_Method,limit);   

       std = 0;       

      std = iStdDevOnArray(BBI_av,0,Boll_Ma,Ma_Method,0,limit);

      up[limit] = BBI_av[limit] + Boll_P * std;            //指标线上轨

      lower[limit] = BBI_av[limit] - Boll_P * std;       //指标线下轨                     

       limit --;

     }

    Comment("BBI_av: ",BBI_av[0],"  ",up[0],"  ",lower[0]);  

      

//---- done

   return(0);

  }