WIP: add the DriftChamberSensDetTool. The SD is not created yet.

Simulation/DetSimSD/CMakeLists.txt

@@ -16,6 +16,8 @@ set(DetSimSD_srcs
 
     src/DDG4SensitiveDetector.cpp
     src/CaloSensitiveDetector.cpp
+
+    src/DriftChamberSensDetTool.cpp
 )
 
 gaudi_add_module(DetSimSD ${DetSimSD_srcs}

Simulation/DetSimSD/src/DriftChamberSensDetTool.cpp

+#include "DriftChamberSensDetTool.h"
+
+#include "G4VSensitiveDetector.hh"
+
+#include "DD4hep/Detector.h"
+
+DECLARE_COMPONENT(DriftChamberSensDetTool);
+
+StatusCode DriftChamberSensDetTool::initialize() {
+    StatusCode sc;
+
+    m_geosvc = service<IGeoSvc>("GeoSvc");
+    if (!m_geosvc) {
+        error() << "Failed to find GeoSvc." << endmsg;
+        return StatusCode::FAILURE;
+    }
+
+    return sc;
+}
+
+StatusCode DriftChamberSensDetTool::finalize() {
+    StatusCode sc;
+    
+    return sc;
+}
+
+G4VSensitiveDetector*
+DriftChamberSensDetTool::createSD(const std::string& name) {
+    dd4hep::Detector* dd4hep_geo = m_geosvc->lcdd();
+
+    G4VSensitiveDetector* sd = nullptr;
+
+    return sd;
+}

Simulation/DetSimSD/src/DriftChamberSensDetTool.h

+#ifndef DriftChamberSensDetTool_h
+#define DriftChamberSensDetTool_h
+
+/*
+ * DriftChamberSensDetTool is used to create Drift Chamber SD.
+ * 
+ * It will use DedxSimTool to give the dE/dx value.
+ *
+ * -- 17 Sept 2020, Tao Lin <lintao@ihep.ac.cn>
+ */
+
+#include "GaudiKernel/AlgTool.h"
+#include "DetSimInterface/ISensDetTool.h"
+#include "DetInterface/IGeoSvc.h"
+
+class DriftChamberSensDetTool: public extends<AlgTool, ISensDetTool> {
+
+public:
+
+    using extends::extends;
+
+    /// Overriding initialize and finalize
+    StatusCode initialize() override;
+    StatusCode finalize() override;
+
+    /// Override ISensDetTool
+    virtual G4VSensitiveDetector* createSD(const std::string& name) override;
+
+private:
+
+    // in order to initialize SD, we need to get the lcdd()
+    SmartIF<IGeoSvc> m_geosvc;
+
+};
+
+#endif