Initial Commit ...

2024-01-25 04:08:38 +03:30
commit efa8818dbb
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+///////////////////////////////////////////////////////
+// 
+// SaherElm IT Center XRange Indicator
+// ---------------------------------------------
+// saherelm implementation of above indicator ...
+//
+// Maintainer:
+// ------------
+// Hadi Khazaee Asl (hadi_khazaee_asl@yahoo.com)
+// 
+//////////////////////////////////////////////////////
+//
+// Global Properties ...
+#property copyright "Copyright 2023, SaherElm IT Center"
+#property link "https://saherelm.ir"
+#property version "1.00"
+#property description "SaherElm XRange Indicator"
+#property strict
+
+//
+// START Inputs ...
+//
+input int marketLength = 14;
+//
+// END Inputs ...
+//
+
+//
+// START Global Definitions: Variables, Properties and etc ...
+//
+#property indicator_chart_window
+
+//
+#property indicator_buffers 3
+
+//
+#property indicator_plots 3
+
+//
+// Start Define Indicator Buffer Styles ...
+//
+//
+// Highest High Buffer ...
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrGreen
+#property indicator_style1  STYLE_DOT
+#property indicator_width1  1
+
+//
+// Lowest Low Buffer ...
+#property indicator_type2   DRAW_LINE
+#property indicator_color2  clrRed
+#property indicator_style2  STYLE_DOT
+#property indicator_width2  1
+
+//
+// Middle Buffer ...
+#property indicator_type3   DRAW_LINE
+#property indicator_color3  clrYellow
+#property indicator_style3  STYLE_DASH
+#property indicator_width3  1
+//
+// End Define Indicator Buffer Styles ...
+//
+
+//
+// Buffers ...
+//
+#define highestHighBufferIndex 0
+#define lowestLowBufferIndex 1
+#define middleBufferIndex 2
+
+//
+double highestHighBuffer[];
+double lowestLowBuffer[];
+double middleBuffer[];
+
+//
+datetime startTime;
+//
+// END Global Definitions: Variables, Properties and etc ...
+//
+
+//
+// Start Event Handlers ...
+// 
+//
+// Initialization ...
+int OnInit() {
+    //
+    // Initialize what we want ...
+    if (
+        marketLength <= 0
+    ) {
+        return INIT_PARAMETERS_INCORRECT;    
+    }
+    
+    //
+    string hhLbl = StringConcatenate(
+        "XR HH(", marketLength, ")"
+    );
+    SetIndexBuffer(highestHighBufferIndex, highestHighBuffer);
+    SetIndexLabel(highestHighBufferIndex, hhLbl);
+    
+    //
+    string llLbl = StringConcatenate(
+        "XR LL(", marketLength, ")"
+    );
+    SetIndexBuffer(lowestLowBufferIndex, lowestLowBuffer);
+    SetIndexLabel(lowestLowBufferIndex, llLbl);
+    
+    //
+    string midLbl = StringConcatenate(
+        "XR Mid(", marketLength, ")"
+    );
+    SetIndexBuffer(middleBufferIndex, middleBuffer);
+    SetIndexLabel(middleBufferIndex, midLbl);
+
+    //
+    return INIT_SUCCEEDED;
+}
+
+//
+// Calculating what we want ...
+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[]
+) {
+    //
+    // this counts Available Bars ...
+    int limit;
+
+    //
+    // because in some cases we may have more than one input for 
+    // calculation and we must prevent any calculation
+    // untill we pass the biggest input length, here we get max Input length
+    // and then wait until pass it ...
+    int maxLength = MathMax(0, marketLength);
+
+    //
+    // input variable, we return 0 means nothing passed ...
+    if (rates_total < maxLength) {
+      return 0;
+    }
+   
+    //
+    // found which candles calculated before ...
+    limit = (prev_calculated == 0) ? rates_total - maxLength - 1 : rates_total - prev_calculated + 1;
+
+    //
+    // this is the main loop of calculations, for each bar index ...
+    for (int i = limit - 1; i >= 0; i--) {
+        //
+        // Start Calculation here ...
+        // i is bar_index ... 
+        
+        //
+        // Calculations ...
+        CalculateBuffers(i);
+    }
+
+    //
+    return rates_total;
+}
+//
+// END Event Handlers ...
+// 
+
+//
+// START Functions ...
+//
+//
+// Calculations ...
+void CalculateBuffers(
+    const int &bar_index
+) {
+    //
+    // Retrieve Bar Time ...
+    datetime barTime = iTime(
+            _Symbol,
+            _Period,
+            bar_index
+        );
+
+    //
+    if (startTime == 0) {
+        //
+        startTime = barTime;
+        SetIndicatorBuffersNone(bar_index);
+        return;
+    }
+
+    //
+    int startBarIndex = iBarShift(
+        _Symbol,
+        _Period,
+        startTime
+    );
+
+    //
+    int startDistance = startBarIndex - bar_index;
+    if (startDistance < marketLength) {
+        //
+        SetIndicatorBuffersNone(bar_index);
+        return;
+    }
+
+    //
+    // Highest High ...
+    int hhIdx = iHighest(
+        _Symbol,
+        _Period,
+        MODE_HIGH,
+        marketLength,
+        bar_index
+    );
+    double hh = iHigh(
+        _Symbol,
+        _Period,
+        hhIdx
+    );
+    highestHighBuffer[bar_index] = hh;
+
+    //
+    // Lowest Low ...
+    int llIdx = iLowest(
+        _Symbol,
+        _Period,
+        MODE_LOW,
+        marketLength,
+        bar_index
+    );
+    double ll = iLow(
+        _Symbol,
+        _Period,
+        llIdx
+    );
+    lowestLowBuffer[bar_index] = ll;
+
+    //
+    // Middle Buffer ...
+    double mid = (hh + ll) / 2;
+    middleBuffer[bar_index] = mid;
+
+    //
+    // Reset Start Time ...
+    startTime = 0;
+}
+
+//
+void SetIndicatorBuffersNone(
+    const int bar_index
+) {
+    //
+    int lastBarIndex = bar_index + 1;
+
+    //
+    double lastHighestHigh;
+    double lastLowestLow;
+    
+    //
+    // Highest High ...
+    if (ArraySize(highestHighBuffer) > lastBarIndex) {
+        lastHighestHigh = highestHighBuffer[lastBarIndex];
+    } else {
+        lastHighestHigh = 0;
+    }
+
+    //
+    // Lowest Low ...
+    if (ArraySize(lowestLowBuffer) > lastBarIndex) {
+        lastLowestLow = lowestLowBuffer[lastBarIndex];
+    } else {
+        lastLowestLow = 0;
+    }
+
+    //
+    highestHighBuffer[bar_index] = lastHighestHigh;
+    lowestLowBuffer[bar_index] = lastLowestLow;
+
+    //
+    double mid = (lastHighestHigh + lastLowestLow) / 2;
+    middleBuffer[bar_index] = mid;
+}
+//
+// END Functions ...
+//