#include "DetectorConstruction.hh"
#include "G4RunManager.hh"
#include "G4SDManager.hh"
#include "G4NistManager.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "globals.hh"
#include "G4Box.hh"
#include "G4VPhysicalVolume.hh"
#include "G4SystemOfUnits.hh"
#include "G4Tubs.hh"
#include "G4UnionSolid.hh"
#include "mySD.hh"
#include "G4PhysicalConstants.hh"
#include "G4Isotope.hh"
#include "G4Element.hh"
#include "G4Material.hh"
#include "G4UnitsTable.hh"

DetectorConstruction::DetectorConstruction()
{}

DetectorConstruction::~DetectorConstruction()
{}

G4VPhysicalVolume* DetectorConstruction::Construct()
	 
 {
	
    G4NistManager* ext = G4NistManager::Instance();
 	
	G4Element* elm1=ext->FindOrBuildElement("G4_Si");
	
	G4Element* elm2=ext->FindOrBuildElement("G4_Li"); 
	
	G4double density; density=2.33*g/cm3;
	
	G4Material* elm = new G4Material ("elm",density,2);
	
	G4double fracMass;
	
	elm->AddElement(elm1, fracMass=90.*perCent);
	
	elm->AddElement(elm2, fracMass=10.*perCent);
	
	//elm->AddElement(elm2, fracMass=10.0*perCent);
 
 G4Box* Det=new G4Box("Det",0.5*mm,1.*mm,2.*mm);
 
 G4Tubs* cyl=new G4Tubs("cycl",0.*mm,2.*mm,5.*mm,0.*deg,360.*deg);	
	
 //G4UnionSolid* fus = new G4UnionSolid("Box+Cylinder", Det, cyl);
	
 G4LogicalVolume* logicDet=new G4LogicalVolume(Det,elm,"logicDet",0);
	
	G4Material* ea = ext->FindOrBuildMaterial("G4_AIR");
 
 //G4Box* Hor=new G4Box("Hor",.*cm,4.*cm,6.*cm);
	
	G4LogicalVolume* logicEA=new G4LogicalVolume(cyl,ea,"logicEA");
 
 G4VPhysicalVolume* physDet=new G4PVPlacement(nullptr,G4ThreeVector(0.*mm,0.*mm,0.*mm),logicDet,"physDet",logicEA,false,0,true);
	
 G4VPhysicalVolume* world=new G4PVPlacement(nullptr,G4ThreeVector(0.,0.,0.),logicEA,"world",nullptr,false,0,true);	
 
 return world;
 
 }

void DetectorConstruction::ConstructSDandField()

{	G4String sdname="/sensDet";
	
	mySD* sensDet=new mySD(sdname,"hitsCollectionName");
	
	G4SDManager* SDMan = G4SDManager::GetSDMpointer();
	
    SDMan->AddNewDetector(sensDet);
	
	SetSensitiveDetector("logicDet",sensDet,true); }