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2026-08-01 14:47:43 +00:00 · 2025-10-29 22:05:11 +01:00
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+//+------------------------------------------------------------------+
+//|                                   Butterworth_Momentum_Pro.mq5   |
+//|                                          Copyright 2025, xxxxxxxx|
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property version   "1.00"
+#property description "Butterworth-smoothed Momentum Oscillator based on Ehlers' concepts."
+
+#property indicator_separate_window
+#property indicator_buffers 1
+#property indicator_plots   1
+#property indicator_label1  "B-Momentum"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrMediumPurple
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  1
+
+#property indicator_level1 0.0
+#property indicator_levelstyle STYLE_SOLID
+#property indicator_levelcolor clrGray
+
+#include <MyIncludes\Butterworth_Calculator.mqh>
+
+enum ENUM_CANDLE_SOURCE { SOURCE_STD, SOURCE_HA };
+
+//--- Input Parameters ---
+input int                      InpPeriod = 20;     // Critical Period for the filter
+input ENUM_BUTTERWORTH_POLES   InpPoles  = POLES_TWO; // Number of poles (2 or 3)
+input ENUM_CANDLE_SOURCE       InpCandleSource = SOURCE_STD;
+
+//--- Indicator Buffers ---
+double    BufferMomentum[];
+
+//--- Global calculator object ---
+CButterworthCalculator *g_calculator;
+
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   SetIndexBuffer(0, BufferMomentum,  INDICATOR_DATA);
+   ArraySetAsSeries(BufferMomentum,  false);
+
+   if(InpCandleSource == SOURCE_HA)
+     {
+      g_calculator = new CButterworthCalculator_HA();
+      IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("B-Mom HA(%d,%d)", InpPeriod, (int)InpPoles));
+     }
+   else
+     {
+      g_calculator = new CButterworthCalculator();
+      IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("B-Mom(%d,%d)", InpPeriod, (int)InpPoles));
+     }
+
+   if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpPeriod, InpPoles, SOURCE_MOMENTUM))
+     {
+      Print("Failed to initialize Butterworth Momentum Calculator.");
+      return(INIT_FAILED);
+     }
+
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, InpPeriod);
+   IndicatorSetInteger(INDICATOR_DIGITS, 4);
+
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+void OnDeinit(const int reason)
+  {
+   if(CheckPointer(g_calculator) != POINTER_INVALID)
+      delete g_calculator;
+  }
+
+//+------------------------------------------------------------------+
+int OnCalculate(const int rates_total, const int, const datetime&[], const double &open[], const double &high[], const double &low[], const double &close[], const long&[], const long&[], const int&[])
+  {
+   if(CheckPointer(g_calculator) == POINTER_INVALID)
+      return 0;
+
+// price_type is not used in momentum mode, but we pass a default value
+   g_calculator.Calculate(rates_total, PRICE_CLOSE, open, high, low, close, BufferMomentum);
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+