Новый индикатор Zigzag на lua под quik

Settings=              
        {                          
            Name = "Zigzag",   -- название индикатора
            delta=3,                  -- параметр индикатора                          
            line=                                     
                {                               
                    {  
                        Name = "zigzagline",
                        Type =TYPE_LINE,
                        Width = 1,
                        Color = RGB(120,90, 140)
                    }
                }
       }


function Init()

    vMin = 0
    vMax = 0
    vMinindex = 0
    vMaxindex = 0
    voldMinindex = 0
    voldMaxindex = 0

  return 1
end


function OnCalculate(index)
  
  if index == 1 then
    vMin = C(index)
    vMax = C(index)
    vMinindex = index
    vMaxindex = index
    voldMinindex = index
    voldMaxindex = index
    v = C(index)  
  else
         
    if voldMaxindex >= voldMinindex then
      if C(index) > (1 + Settings.delta/100)*vMin then
        vMin = C(index)  
        vMax = C(index) 
        vMaxindex = index
        voldMinindex = vMinindex 
        vFrom = vMinindex  
      else     
        if vMin > C(index) then
          vMin = C(index)
          vMinindex = index
          vFrom = voldMaxindex      
       else
          vFrom = vMinindex 
        end 
      end
    else
     
    if voldMaxindex <= voldMinindex then
      if C(index) < (1 - Settings.delta/100)*vMax then
        vMax = C(index) 
        vMin = C(index)  
        vMinindex = index
        voldMaxindex = vMaxindex
        vFrom = vMaxindex
      else 
        if vMax < C(index) then
          vMax = C(index)
          vMaxindex = index
          vFrom = voldMinindex    
       else  
          vFrom = vMaxindex          
        end
      end  
    end
    end
 
    for i = vFrom, index do
      k = (C(index)- C(vFrom))/(index- vFrom);
      v = i*k + C(index) - index*k
      SetValue(i, 1, v)
    end   
 
  end   

end