add geant4 scene and gcompose app

src/HEP/Geant/DetectorConstruction.hh

@@ -0,0 +1,28 @@
+#ifndef DetectorConstruction_h
+#define DetectorConstruction_h
+
+#include "Core/Object.h"
+#include "G4VUserDetectorConstruction.hh"
+#include "globals.hh"
+
+class G4VPhysicalVolume;
+class G4LogicalVolume;
+
+namespace uLib {
+
+class DetectorConstruction : public G4VUserDetectorConstruction {
+public:
+  DetectorConstruction(const char *name);
+  virtual ~DetectorConstruction();
+
+  virtual G4VPhysicalVolume *Construct();
+
+  virtual void ConstructSDandField();
+};
+
+} // namespace uLib
+
+#endif
+
+
+