refactor: Optimized for incremental calculation

Indicators/MyIndicators/GannHiLo_Pro.mq5

@@ -1,11 +1,9 @@
 //+------------------------------------------------------------------+
 //|                                                  Gann_HiLo_Pro.mq5|
 //|                                          Copyright 2025, xxxxxxxx|
-//|                                                                  |
 //+------------------------------------------------------------------+
 #property copyright "Copyright 2025, xxxxxxxx"
-#property link      ""
+#property version   "3.10" // Optimized for incremental calculation
-#property version   "3.01" // Corrected calculator call signature
 #property description "Professional Gann HiLo Activator with selectable MA and"
 #property description "candle source (Standard or Heikin Ashi)."
 
@@ -92,10 +90,10 @@ void OnDeinit(const int reason)
   }
 
 //+------------------------------------------------------------------+
-//| Custom indicator calculation function.                           |
+//| Custom indicator calculation function                            |
 //+------------------------------------------------------------------+
 int OnCalculate(const int rates_total,
-                const int prev_calculated,
+                const int prev_calculated, // <--- Now used!
                 const datetime &time[],
                 const double &open[],
                 const double &high[],
@@ -105,15 +103,13 @@ int OnCalculate(const int rates_total,
                 const long &volume[],
                 const int &spread[])
   {
-//--- Ensure the calculator object is valid
    if(CheckPointer(g_calculator) == POINTER_INVALID)
       return 0;
 
-//--- Delegate the entire calculation to our calculator object
+//--- Delegate calculation with prev_calculated optimization
-//--- CORRECTED: Pass the 'open' array for HA calculation
+// Note: We pass 'open' array even though base calc doesn't use it, but HA calc does.
-   g_calculator.Calculate(rates_total, open, high, low, close, BufferGannHiLo, BufferColor);
+   g_calculator.Calculate(rates_total, prev_calculated, open, high, low, close, BufferGannHiLo, BufferColor);
 
-//--- Return rates_total for a full recalculation, ensuring stability
    return(rates_total);
   }
 //+------------------------------------------------------------------+