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mql5/Include/MyIncludes/Session_Analysis_Calculator.mqh
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2025-10-14 15:17:15 +02:00

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//+------------------------------------------------------------------+
//| Session_Analysis_Calculator.mqh |
//| Calculation engine for drawing session boxes and analytics. |
//| Copyright 2025, xxxxxxxx |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, xxxxxxxx"
#include <MyIncludes\HeikinAshi_Tools.mqh>
//+==================================================================+
//| |
//| CLASS 1: CSessionAnalyzer (Base Class) |
//| |
//+==================================================================+
class CSessionAnalyzer
{
protected:
int m_start_hour, m_start_min;
int m_end_hour, m_end_min;
color m_color;
string m_prefix;
bool m_enabled;
bool m_fill_box;
bool m_show_vwap;
bool m_show_mean;
bool m_show_linreg;
ENUM_APPLIED_VOLUME m_volume_type;
//--- Internal source buffers
double m_src_high[], m_src_low[], m_src_close[], m_src_price[];
bool IsTimeInSession(const MqlDateTime &dt);
virtual bool PrepareSourceData(int rates_total, const double &open[], const double &high[], const double &low[], const double &close[], ENUM_APPLIED_PRICE price_type);
public:
void Init(bool enabled, string start_time, string end_time, color box_color, bool fill_box, bool show_vwap, bool show_mean, bool show_linreg, ENUM_APPLIED_VOLUME vol_type, string prefix);
void Update(const int rates_total, const datetime &time[], const double &open[], const double &high[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], ENUM_APPLIED_PRICE price_type);
void Cleanup(void);
};
//+------------------------------------------------------------------+
//| CSessionAnalyzer: Initialization |
//+------------------------------------------------------------------+
void CSessionAnalyzer::Init(bool enabled, string start_time, string end_time, color box_color, bool fill_box, bool show_vwap, bool show_mean, bool show_linreg, ENUM_APPLIED_VOLUME vol_type, string prefix)
{
m_enabled = enabled;
m_prefix = prefix;
m_color = box_color;
m_fill_box = fill_box;
m_show_vwap = show_vwap;
m_show_mean = show_mean;
m_show_linreg = show_linreg;
m_volume_type = vol_type;
string parts[];
if(StringSplit(start_time, ':', parts) == 2)
{
m_start_hour = (int)StringToInteger(parts[0]);
m_start_min = (int)StringToInteger(parts[1]);
}
if(StringSplit(end_time, ':', parts) == 2)
{
m_end_hour = (int)StringToInteger(parts[0]);
m_end_min = (int)StringToInteger(parts[1]);
}
}
//+------------------------------------------------------------------+
//| CSessionAnalyzer: Checks if a given time is within the session. |
//+------------------------------------------------------------------+
bool CSessionAnalyzer::IsTimeInSession(const MqlDateTime &dt)
{
int current_time_in_minutes = dt.hour * 60 + dt.min;
int start_time_in_minutes = m_start_hour * 60 + m_start_min;
int end_time_in_minutes = m_end_hour * 60 + m_end_min;
if(end_time_in_minutes < start_time_in_minutes) // Overnight session (e.g., 22:00 to 04:00)
{
return (current_time_in_minutes >= start_time_in_minutes || current_time_in_minutes < end_time_in_minutes);
}
else // Same-day session
{
return (current_time_in_minutes >= start_time_in_minutes && current_time_in_minutes < end_time_in_minutes);
}
}
//+------------------------------------------------------------------+
//| CSessionAnalyzer: Deletes all objects created by this instance |
//+------------------------------------------------------------------+
void CSessionAnalyzer::Cleanup(void)
{
if(!m_enabled)
return;
ObjectsDeleteAll(0, m_prefix);
}
//+------------------------------------------------------------------+
//| CSessionAnalyzer: Main update logic |
//+------------------------------------------------------------------+
void CSessionAnalyzer::Update(const int rates_total, const datetime &time[], const double &open[], const double &high[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], ENUM_APPLIED_PRICE price_type)
{
if(!m_enabled || rates_total < 2)
return;
if(!PrepareSourceData(rates_total, open, high, low, close, price_type))
return;
Cleanup();
bool in_session = false;
int session_start_bar = -1;
double session_high = 0, session_low = 0;
long session_id = 0;
double cumulative_tpv = 0, cumulative_vol = 0, prev_vwap = 0;
double cumulative_price = 0;
int bar_count = 0;
double sum_x = 0, sum_y = 0, sum_xy = 0, sum_x2 = 0;
for(int i = 1; i < rates_total; i++)
{
MqlDateTime dt;
TimeToStruct(time[i], dt);
bool is_in_current_session = IsTimeInSession(dt);
if(is_in_current_session && !in_session)
{
in_session = true;
session_start_bar = i;
session_high = m_src_high[i];
session_low = m_src_low[i];
session_id = (long)time[i] - (dt.hour*3600 + dt.min*60 + dt.sec);
cumulative_tpv = 0;
cumulative_vol = 0;
prev_vwap = 0;
cumulative_price = 0;
bar_count = 0;
sum_x = 0;
sum_y = 0;
sum_xy = 0;
sum_x2 = 0;
}
else
if(!is_in_current_session && in_session)
{
in_session = false;
// Session ended, no action needed as drawing is real-time
}
if(in_session)
{
session_high = MathMax(session_high, m_src_high[i]);
session_low = MathMin(session_low, m_src_low[i]);
if(m_show_vwap)
{
double typical_price = (m_src_high[i] + m_src_low[i] + m_src_close[i]) / 3.0;
long current_volume = (m_volume_type == VOLUME_TICK) ? tick_volume[i] : volume[i];
if(current_volume < 1)
current_volume = 1;
cumulative_tpv += typical_price * (double)current_volume;
cumulative_vol += (double)current_volume;
double current_vwap = (cumulative_vol > 0) ? cumulative_tpv / cumulative_vol : 0;
if(prev_vwap > 0)
{
string vwap_line_name = m_prefix + "VWAP_" + (string)time[i];
ObjectCreate(0, vwap_line_name, OBJ_TREND, 0, time[i-1], prev_vwap, time[i], current_vwap);
ObjectSetInteger(0, vwap_line_name, OBJPROP_COLOR, m_color);
ObjectSetInteger(0, vwap_line_name, OBJPROP_WIDTH, 1);
}
prev_vwap = current_vwap;
}
if(m_show_mean || m_show_linreg)
{
cumulative_price += m_src_price[i];
double x = bar_count;
double y = m_src_price[i];
sum_x += x;
sum_y += y;
sum_xy += x * y;
sum_x2 += x * x;
bar_count++;
}
// --- Real-time drawing of all components for the current session ---
string box_name = m_prefix + "Box_" + (string)session_id;
if(ObjectFind(0, box_name) < 0)
{
ObjectCreate(0, box_name, OBJ_RECTANGLE, 0, time[session_start_bar], session_high, time[i], session_low);
ObjectSetInteger(0, box_name, OBJPROP_COLOR, m_color);
ObjectSetInteger(0, box_name, OBJPROP_STYLE, STYLE_SOLID);
ObjectSetInteger(0, box_name, OBJPROP_BACK, true);
ObjectSetInteger(0, box_name, OBJPROP_FILL, m_fill_box);
}
else
{
ObjectSetDouble(0, box_name, OBJPROP_PRICE, 0, session_high);
ObjectSetDouble(0, box_name, OBJPROP_PRICE, 1, session_low);
ObjectSetInteger(0, box_name, OBJPROP_TIME, 1, time[i]);
}
if(m_show_mean && bar_count > 0)
{
double mean_price = cumulative_price / bar_count;
string mean_line_name = m_prefix + "Mean_" + (string)session_id;
if(ObjectFind(0, mean_line_name) < 0)
ObjectCreate(0, mean_line_name, OBJ_TREND, 0, time[session_start_bar], mean_price, time[i], mean_price);
else
{
ObjectSetDouble(0, mean_line_name, OBJPROP_PRICE, 0, mean_price);
ObjectSetDouble(0, mean_line_name, OBJPROP_PRICE, 1, mean_price);
ObjectSetInteger(0, mean_line_name, OBJPROP_TIME, 1, time[i]);
}
ObjectSetInteger(0, mean_line_name, OBJPROP_COLOR, m_color);
ObjectSetInteger(0, mean_line_name, OBJPROP_STYLE, STYLE_SOLID);
}
if(m_show_linreg && bar_count > 1)
{
double denominator = (bar_count * sum_x2 - sum_x * sum_x);
if(denominator != 0)
{
double b = (bar_count * sum_xy - sum_x * sum_y) / denominator;
double a = (sum_y - b * sum_x) / bar_count;
double start_price = a;
double end_price = a + b * (bar_count - 1);
string lr_line_name = m_prefix + "LinReg_" + (string)session_id;
if(ObjectFind(0, lr_line_name) < 0)
ObjectCreate(0, lr_line_name, OBJ_TREND, 0, time[session_start_bar], start_price, time[i], end_price);
else
{
ObjectMove(0, lr_line_name, 0, time[session_start_bar], start_price);
ObjectMove(0, lr_line_name, 1, time[i], end_price);
}
ObjectSetInteger(0, lr_line_name, OBJPROP_COLOR, m_color);
ObjectSetInteger(0, lr_line_name, OBJPROP_STYLE, STYLE_SOLID);
ObjectSetInteger(0, lr_line_name, OBJPROP_WIDTH, 1);
}
}
}
}
}
//+------------------------------------------------------------------+
//| CSessionAnalyzer: Prepares the standard source data. |
//+------------------------------------------------------------------+
bool CSessionAnalyzer::PrepareSourceData(int rates_total, const double &open[], const double &high[], const double &low[], const double &close[], ENUM_APPLIED_PRICE price_type)
{
ArrayResize(m_src_high, rates_total);
ArrayCopy(m_src_high, high, 0, 0, rates_total);
ArrayResize(m_src_low, rates_total);
ArrayCopy(m_src_low, low, 0, 0, rates_total);
ArrayResize(m_src_close, rates_total);
ArrayCopy(m_src_close, close, 0, 0, rates_total);
ArrayResize(m_src_price, rates_total);
switch(price_type)
{
case PRICE_OPEN:
ArrayCopy(m_src_price, open, 0, 0, rates_total);
break;
case PRICE_HIGH:
ArrayCopy(m_src_price, high, 0, 0, rates_total);
break;
case PRICE_LOW:
ArrayCopy(m_src_price, low, 0, 0, rates_total);
break;
case PRICE_MEDIAN:
for(int i=0; i<rates_total; i++)
m_src_price[i] = (high[i]+low[i])/2.0;
break;
case PRICE_TYPICAL:
for(int i=0; i<rates_total; i++)
m_src_price[i] = (high[i]+low[i]+close[i])/3.0;
break;
case PRICE_WEIGHTED:
for(int i=0; i<rates_total; i++)
m_src_price[i] = (high[i]+low[i]+2*close[i])/4.0;
break;
default:
ArrayCopy(m_src_price, close, 0, 0, rates_total);
break;
}
return true;
}
//+==================================================================+
//| |
//| CLASS 2: CSessionAnalyzer_HA (Heikin Ashi) |
//| |
//+==================================================================+
class CSessionAnalyzer_HA : public CSessionAnalyzer
{
private:
CHeikinAshi_Calculator m_ha_calculator;
protected:
virtual bool PrepareSourceData(int rates_total, const double &open[], const double &high[], const double &low[], const double &close[], ENUM_APPLIED_PRICE price_type) override;
};
//+------------------------------------------------------------------+
//| CSessionAnalyzer_HA: Prepares the HA source data. |
//+------------------------------------------------------------------+
bool CSessionAnalyzer_HA::PrepareSourceData(int rates_total, const double &open[], const double &high[], const double &low[], const double &close[], ENUM_APPLIED_PRICE price_type)
{
//--- CORRECTED SECTION: Declare all local HA arrays ---
double ha_open[], ha_high[], ha_low[], ha_close[];
ArrayResize(ha_open, rates_total);
ArrayResize(ha_high, rates_total);
ArrayResize(ha_low, rates_total);
ArrayResize(ha_close, rates_total);
//--- Calculate all HA values into the local arrays
m_ha_calculator.Calculate(rates_total, open, high, low, close, ha_open, ha_high, ha_low, ha_close);
//--- Now, copy the calculated HA values to the class member arrays for analysis
ArrayCopy(m_src_high, ha_high, 0, 0, rates_total);
ArrayCopy(m_src_low, ha_low, 0, 0, rates_total);
ArrayCopy(m_src_close, ha_close, 0, 0, rates_total);
//--- Finally, prepare the specific m_src_price array based on user's choice
ArrayResize(m_src_price, rates_total);
switch(price_type)
{
case PRICE_OPEN:
ArrayCopy(m_src_price, ha_open, 0, 0, rates_total);
break;
case PRICE_HIGH:
ArrayCopy(m_src_price, ha_high, 0, 0, rates_total);
break;
case PRICE_LOW:
ArrayCopy(m_src_price, ha_low, 0, 0, rates_total);
break;
case PRICE_MEDIAN:
for(int i=0; i<rates_total; i++)
m_src_price[i] = (ha_high[i]+ha_low[i])/2.0;
break;
case PRICE_TYPICAL:
for(int i=0; i<rates_total; i++)
m_src_price[i] = (ha_high[i]+ha_low[i]+ha_close[i])/3.0;
break;
case PRICE_WEIGHTED:
for(int i=0; i<rates_total; i++)
m_src_price[i] = (ha_high[i]+ha_low[i]+2*ha_close[i])/4.0;
break;
default: // PRICE_CLOSE
ArrayCopy(m_src_price, ha_close, 0, 0, rates_total);
break;
}
return true;
}
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+