-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=62888

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function Init()
    indicator:name("Quantum");
    indicator:description(" ");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
 
	indicator.parameters:addGroup("Calculation");
	 indicator.parameters:addInteger("Period", "Period", "Period", 300);
	  indicator.parameters:addBoolean("ReversalOnly", "Trend reversal only", "", true);	
	indicator.parameters:addGroup("Style");
    indicator.parameters:addColor("UP", "Up fractal color", "Up fractal color", core.rgb(0,255,0));
    indicator.parameters:addColor("DOWN", "Down fractal color", "Down fractal color", core.rgb(255,0,0)); 
	indicator.parameters:addInteger("Size", "Font Size", "", 10, 1 , 100);	 
end

local source;
local up, down; 
local Size; 
local Period;
local first;
local Period;
local ReversalOnly;
function Prepare()
    source = instance.source;
    Size = instance.parameters.Size;
	Period = instance.parameters.Period; 
	
	Confirmation = instance:addInternalStream(0, 0);	
	ReversalOnly = instance.parameters.ReversalOnly;
	
    up = instance:createTextOutput ("Up", "Up", "Wingdings", Size, core.H_Center, core.V_Top, instance.parameters.UP, 0);
    down = instance:createTextOutput ("Dn", "Dn", "Wingdings", Size, core.H_Center, core.V_Bottom, instance.parameters.DOWN, 0);
	first=source:first()+Period; 
	 
  local name = profile:id() ;
    instance:name(name);
end

function Update(period)


       up:setNoData (period);
	   down:setNoData (period);
 
       
       if period < first  then
	   return;
	   end
	  
	   local min,max=mathex.minmax(source,period-Period+1, period);
	  
	   
	   if source.high[period]== max then
        
      
			 Confirmation[period]=1;
			 if (ReversalOnly and  Confirmation[period-1]~=1) or not ReversalOnly then
			 down:set(period, source.low[period], "\111");
			 end 
        
        elseif  source.low[period]== min   then
            
			  if (ReversalOnly and  Confirmation[period-1]~=-1) or not ReversalOnly then
			 up:set(period , source.high[period], "\111");
			 end
			 Confirmation[period]=-1;
        else
	         Confirmation[period]=Confirmation[period-1];
        end
	   
		    
	      
	 
end