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refactor: Optimized for incremental calculation

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Toh4iem9
2025-11-28 22:49:53 +01:00
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Indicators/MyIndicators/Authors/Ehlers/5_Ehlers_Hybrids/MACD_Laguerre_Histogram_Pro.md
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# MACD Laguerre Histogram Professional
# MACD Laguerre Histogram Pro
## 1. Summary (Introduction)
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* **Self-Contained Calculation:** The indicator is fully self-contained. Its engine (`MACD_Laguerre_Histogram_Calculator.mqh`) internally recalculates the entire Laguerre MACD line using the `Laguerre_Engine`. This "shared engine" architecture avoids the instability of `iCustom` calls.
* **Flexible Signal Line Calculation:** The calculator uses a `switch` block to apply the user's chosen smoothing method for the signal line. This includes a dedicated, state-managed calculation for the `Laguerre` option and reuses our universal `CalculateMA` helper function for standard MA types.
* **Optimized Incremental Calculation:**
Unlike basic implementations that recalculate the entire history on every tick, this indicator employs an intelligent incremental algorithm.
* It utilizes the `prev_calculated` state to determine the exact starting point for updates.
* **Persistent State:** The internal Laguerre engines persist their state (`L0`...`L3`) between ticks, allowing the recursive calculation to continue seamlessly from the last known value.
* This results in **O(1) complexity** per tick, ensuring instant updates and zero lag, even on charts with extensive history.
* **Flexible Signal Line Calculation:** The calculator dynamically instantiates either a third `Laguerre_Engine` or a `MovingAverage_Engine` for the signal line, depending on the user's choice. This ensures that the signal line calculation is also fully optimized and incremental.
* **Object-Oriented Design (Inheritance):** The standard `_HA` derived class architecture is used to seamlessly support calculations on Heikin Ashi price data.