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2026-07-27 20:47:44 +00:00 · 2025-08-13 00:44:36 +02:00
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+//+------------------------------------------------------------------+
+//|                                                          HMA.mq5 |
+//|                      Copyright 2025, xxxxxxxx                    |
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "1.00"
+#property description "Hull Moving Average (HMA)"
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_chart_window
+#property indicator_buffers 4 // HMA, and 3 calculation buffers
+#property indicator_plots   1
+
+//--- Plot 1: HMA line
+#property indicator_label1  "HMA"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrDeepPink
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  2
+
+//--- Input Parameters ---
+input int                InpPeriodHMA    = 14;      // HMA Period
+input ENUM_APPLIED_PRICE InpAppliedPrice = PRICE_CLOSE; // Applied Price
+
+//--- Indicator Buffers ---
+double    BufferHMA[];        // Final HMA line
+double    BufferWMA_Half[];   // WMA(period/2)
+double    BufferWMA_Full[];   // WMA(period)
+double    BufferRawHMA[];     // Raw HMA (2*WMA_Half - WMA_Full)
+
+//--- Global Variables ---
+int       ExtPeriodHMA;
+int       handle_wma_half;
+int       handle_wma_full;
+
+//--- Include for WMA calculation ---
+#include <MovingAverages.mqh>
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+void OnInit()
+  {
+//--- Validate and store input period
+   ExtPeriodHMA = (InpPeriodHMA < 1) ? 1 : InpPeriodHMA;
+
+//--- Map the buffers
+   SetIndexBuffer(0, BufferHMA,      INDICATOR_DATA);
+   SetIndexBuffer(1, BufferWMA_Half, INDICATOR_CALCULATIONS);
+   SetIndexBuffer(2, BufferWMA_Full, INDICATOR_CALCULATIONS);
+   SetIndexBuffer(3, BufferRawHMA,   INDICATOR_CALCULATIONS);
+
+//--- Create handles to the standard iWMA indicator
+   int period_half = (int)MathMax(1, MathRound(ExtPeriodHMA / 2.0));
+   handle_wma_half = iMA(_Symbol, _Period, period_half, 0, MODE_LWMA, InpAppliedPrice);
+   handle_wma_full = iMA(_Symbol, _Period, ExtPeriodHMA, 0, MODE_LWMA, InpAppliedPrice);
+
+   if(handle_wma_half == INVALID_HANDLE || handle_wma_full == INVALID_HANDLE)
+     {
+      Print("Error creating iWMA handles.");
+      return;
+     }
+
+//--- Set indicator display properties
+   IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, ExtPeriodHMA + (int)MathFloor(MathSqrt(ExtPeriodHMA)) - 1);
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("HMA(%d)", ExtPeriodHMA));
+  }
+
+//+------------------------------------------------------------------+
+//| Hull Moving Average calculation function.                        |
+//+------------------------------------------------------------------+
+int OnCalculate(const int rates_total,
+                const int prev_calculated,
+                const datetime &time[],
+                const double &open[],
+                const double &high[],
+                const double &low[],
+                const double &close[],
+                const long &tick_volume[],
+                const long &volume[],
+                const int &spread[])
+  {
+//--- Check if there is enough data
+   if(rates_total < ExtPeriodHMA)
+      return(0);
+
+//--- Check if the source WMA indicators have calculated their data
+   if(BarsCalculated(handle_wma_half) < rates_total || BarsCalculated(handle_wma_full) < rates_total)
+      return(0);
+
+//--- STEP 1 & 2: Get the two WMA values
+   if(CopyBuffer(handle_wma_half, 0, 0, rates_total, BufferWMA_Half) <= 0 ||
+      CopyBuffer(handle_wma_full, 0, 0, rates_total, BufferWMA_Full) <= 0)
+     {
+      return(0);
+     }
+
+//--- STEP 3: Calculate the raw HMA data
+   for(int i = 0; i < rates_total; i++)
+     {
+      BufferRawHMA[i] = 2 * BufferWMA_Half[i] - BufferWMA_Full[i];
+     }
+
+//--- STEP 4: Smooth the raw HMA with another WMA to get the final HMA
+   int period_sqrt = (int)MathMax(1, MathRound(MathSqrt(ExtPeriodHMA)));
+
+// We use our stable, manual calculation loop for the final smoothing
+   ArraySetAsSeries(BufferRawHMA, false); // WMA function needs non-timeseries
+   ArraySetAsSeries(BufferHMA, false);
+
+   for(int i = ExtPeriodHMA - 1; i < rates_total; i++)
+     {
+      BufferHMA[i] = LinearWeightedMA(i, period_sqrt, BufferRawHMA);
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+