--[[
параметры: 
Procent - процент зигзага 
--]]
Settings={
Name="ZIGZAGLEVELS",
Procent=5.0,
levels=6,
delta=0.2,
    line=                                     
                {  
					{  
                        Name = "cur1",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },				
					{  
                        Name = "cur2",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },
					{  
                        Name = "cur3",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },
					{  
                        Name = "cur4",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },				
					{  
                        Name = "cur5",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },
					{  
                        Name = "cur6",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    }					
                }
}

function Init()
  
  y1 = nil
  y2 = nil
  x1 = 1
  x2 = 1
  levelsy={}
  levelsx={}  
  cntlevels=0
      	
  return 6
  
end

function OnCalculate(index)

  de = Settings.Procent
  levels = Settings.levels
  delta = Settings.delta
  sz = Size()

  vl = C(index)
  if index <= 1 then 
	y1 = vl
    y2 = vl
	cntlevels=0
  else   
	  if C(index) > y1*(1+de/100) and y1 < y2 then 
	    x2 = x1
	    y2 = y1	
	    x1 = index 
	    y1 = C(index)	        
        cntlevels = cntlevels + 1		
		levelsx[cntlevels]=x2
	    levelsy[cntlevels]=y2        
	  end 	
	  if C(index) > y1 and C(index) > y2 then 
	    x1 = index 
	    y1 = C(index)	  			  
	  end 
	  	  		
	  if C(index) < y1*(1-de/100) and y1 > y2 then 
	    x2 = x1
	    y2 = y1
	    x1 = index 
	    y1 = C(index)	  		
		cntlevels = cntlevels + 1
		levelsx[cntlevels]=x2
	    levelsy[cntlevels]=y2		
	  end 	
	  if C(index) < y1 and C(index) < y2 then 
	    x1 = index 
	    y1 = C(index)	  			  
	  end 	  	  		
	end 	
  
  if x1 ~= index then 
    curfrom = x1
	curto = index
  else 
    curfrom = x2
	curto = x1
  end 
  
  if sz == index then 
   cnt = levels
   for k = 1, cnt do  
	for i = 1, index  do        
	  SetValue(i, k, nil)
    end     
   end 
  
  -- cnt = 3
   k = 0
   for j = cntlevels, 1, -1 do
    d = 0
    if levelsy[j] > C(index) then 
      d = levelsy[j] - C(index)
	end 
    if levelsy[j] < C(index) then 
      d = C(index) - levelsy[j]
	end 	
	if d < delta*C(index) and d > 0 then 
	 k = k + 1
	 if k <= cnt then 	   
	   y = levelsy[j]   
	   for i = levelsx[j], index  do        	     
	     SetValue(i, k, y)
       end   
	 end
	end 
   end

  --[[
   k = 0
   for j = cntlevels, 1, -1 do
    d = 0
    if levelsy[j] < C(index) then 
      d = C(index) - levelsy[j]
	end 	
	if d < 0.2*C(index) and d > 0 then 	 
	 if k <= cnt then 
	   k = k + 1
	   y = levelsy[j]   
	   for i = levelsx[j], index  do        	     
	     SetValue(i, k+3, y)
       end   
	 end
	end 
   end
   --]]
   
  end   

 
  
end