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refactor: Optimized for incremental calculation

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Toh4iem9
2025-11-29 09:52:32 +01:00
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Indicators/MyIndicators/MovingAverage_Ribbon_Pro.md
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# Moving Average Ribbon Professional
# Moving Average Ribbon Pro
## 1. Summary (Introduction)
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## 2. Mathematical Foundations and Calculation Logic
The indicator is a "meta-indicator" built upon the four fundamental moving average types:
The indicator is a "meta-indicator" built upon the seven fundamental and advanced moving average types supported by our engine:
* **SMA** (Simple Moving Average)
* **EMA** (Exponential Moving Average)
* **SMMA** (Smoothed Moving Average)
* **LWMA** (Linear Weighted Moving Average)
* **TMA** (Triangular Moving Average)
* **DEMA** (Double Exponential Moving Average)
* **TEMA** (Triple Exponential Moving Average)
The core concept of a moving average ribbon is to visualize the relationship between multiple moving averages of different lengths.
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* **Modular and Composite Design:** The indicator's engine (`MovingAverage_Ribbon_Calculator.mqh`) is a prime example of the composition design pattern. It **contains four independent instances** of our universal `CMovingAverageCalculator` class. Each instance is responsible for calculating one line of the ribbon.
* **Optimized Incremental Calculation:**
Despite managing four separate calculations simultaneously, the indicator remains extremely efficient.
* Each of the four internal calculators tracks its own state and utilizes the `prev_calculated` optimization.
* **Persistent State:** The internal buffers for recursive calculations (EMA, SMMA, DEMA, TEMA) persist between ticks for each line independently.
* This ensures that the indicator runs with **O(1) complexity** per tick, updating all four lines instantly without re-processing history.
* **Maximum Reusability:** This architecture leverages our existing, robust `MovingAverage_Engine.mqh` without modification. The ribbon calculator acts as a "manager" that simply delegates the calculation for each line to a specialized, single-MA calculator.
* **Full Customization:** The `Init` method of the ribbon calculator accepts eight parameters (four periods and four MA types), allowing each of the four internal MA calculators to be configured independently.
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* **MA 1-4 Settings:**
* **`InpPeriod1` - `InpPeriod4`:** The lookback period for each of the four moving average lines.
* **`InpMAType1` - `InpMAType4`:** A dropdown menu to select the MA type (SMA, EMA, SMMA, LWMA) for each line independently.
* **`InpMAType1` - `InpMAType4`:** A dropdown menu to select the MA type (SMA, EMA, SMMA, LWMA, TMA, DEMA, TEMA) for each line independently.
* **Price Source:**
* **`InpSourcePrice`:** The source price for all calculations (Standard or Heikin Ashi).