93 lines
2.7 KiB
Markdown
93 lines
2.7 KiB
Markdown
# Introduction
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This folder stored all online analyzers. The Analyser.cpp/h is the base class for all analyzer.
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The Analyzer.cpp/h has the MultiBuilder (to handle event building) and InfluxDB (to handle pushing data to influxDB database) classes. In Addision, it has a QThread, a AnalyzerWorker, and a QTimer, these three object handle the threading of UpdateHistograms().
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The AnalyzerWorker moves to the QThread. QTimer::timeout will trigger AnalyzerWorker::UpdateHistograms().
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There is an important bool 'isWorking'. This boolean variable is true when AnalyzerWorker::UpdateHistograms() is running, and it is false when finsihed. This prevent UpdateHistograms() runs twice at the same time.
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There are two virual methods
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- SetupCanvas()
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- UpdateHistograms()
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Users must implement these two methods in theie custom analyzer.
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# Intruction to make new Analyzer
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The CoindientAnalyzer.h is a good example.
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1. inheirate the Analyzer class
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```cpp
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class CustomAnalyzer : public Analyzer{
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Q_OBJECT
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public:
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CustomAnalyzer(Digitizer ** digi, unsigned int nDigi, QMainWindow * parent = nullptr): Analyzer(digi, nDigi, parent){
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SetUpdateTimeInSec(1.0); // set histogram update period in sec
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mb->SetTimeWindow(500); // set the event time windows
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// ... other custom stuffs
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}
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void SetUpCanvas();
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public slots:
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void UpdateHistograms();
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private:
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Histogram2D * h2D;
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Histogram1D * h1D;
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// some priavte variables
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}
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```
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2. implement the SetUpCanvas() method
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```cpp
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inline void CustomAnalyzer::SetUpCanvas(){
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setWindowTitle("Title");
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setGeometry(0, 0, 1600, 1000);
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h2D = new Histogram2D("Coincident Plot", "XXX", "YYY", 200, 0, 30000, 200, 0, 30000, this, rawDataPath);
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//layout is inheriatge from Analyzer
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layout->addWidget(h2D, 0, 0); // row-0, col-0
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h1 = new Histogram1D("1D Plot", "XXX", 300, 0, 30000, this);
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h1->SetColor(Qt::darkGreen);
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layout->addWidget(h1, 0, 1); // row-0, col-1
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//other GUI elements
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}
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```
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3. implement the UpdateHistograms() method
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```cpp
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inline void CustomAnalyzer::UpdateHistograms(){
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// don't update histogram when the windows not visible
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if( this->isVisible() == false ) return;
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BuildEvents(false); // call the event builder to build events, no verbose
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//check number of event built
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long eventBuilt = mb->eventBuilt;
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if( eventBuilt == 0 ) return;
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//============ Processing data and fill histograms
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long eventIndex = mb->eventIndex;
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long eventStart = eventIndex - eventBuilt + 1;
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if(eventStart < 0 ) eventStart += MaxNEvent;
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for( long i = eventStart ; i <= eventIndex; i ++ ){
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std::vector<Hit> event = mb->events[i];
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//analysis and fill historgam
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}
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//Render histograms
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h2D->UpdatePlot();
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h1D->UpdatePlot();
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}
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``` |