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// $Id: MedLinacPhantomROGeometry.cc,v 1.5 2006/06/29 16:04:35 gunter Exp $
//
//
// Code developed by: M. Piergentili
//
#include "MedLinacPhantomROGeometry.hh"
#include "MedLinacDummySD.hh"

#include "G4LogicalVolume.hh"
#include "G4VPhysicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4PVReplica.hh"
#include "G4SDManager.hh"
#include "G4Box.hh"
#include "G4Tubs.hh"
#include "G4SubtractionSolid.hh"
#include "G4ThreeVector.hh"
#include "G4Material.hh"

MedLinacPhantomROGeometry::MedLinacPhantomROGeometry(G4String aString,
                                                 G4double phantomDim_x,
					         G4double phantomDim_y,
                                                 G4double phantomDim_z,
                                                 G4int numberOfVoxelsX,
					         G4int numberOfVoxelsY,
                                                 G4int numberOfVoxelsZ):
  G4VReadOutGeometry(aString),
  PhantomDimensionX(phantomDim_x),
  PhantomDimensionY(phantomDim_y),
  PhantomDimensionZ(phantomDim_z),
  NumberOfVoxelsAlongX(numberOfVoxelsX),
  NumberOfVoxelsAlongY(numberOfVoxelsY),
  NumberOfVoxelsAlongZ(numberOfVoxelsZ)
{}
MedLinacPhantomROGeometry::~MedLinacPhantomROGeometry()
{
}

G4VPhysicalVolume* MedLinacPhantomROGeometry::Build()
{
 
  G4cout << " MedLinacPhantomROGeometry::Build()-----------------------" << G4endl;
  
  //G4Material* dummyMat = new G4Material(name="dummyMat", 1., 1.*g/mole, 1.*g/cm3);
  G4double a;  // atomic mass
  G4double z;  // atomic number
  G4int natoms;
  G4String name;
  G4String symbol;
  a = 16.00*g/mole;
  G4Element* elO = new G4Element(name="Oxygen",symbol="O", z=8., a);

  a = 1.00794*g/mole;
  G4Element* elH = new G4Element(name="Hydrogen",symbol="H", z=1., a);

  G4double density;
  G4int ncomponents;
  density = 1.000*g/cm3;
  G4Material* H2O = new G4Material(name="Water",density, ncomponents=2);
  H2O->AddElement(elH, natoms=2);
  H2O->AddElement(elO, natoms=1);

  G4double expHall_x = 3.0*m;
  G4double expHall_y = 3.0*m;
  G4double expHall_z = 3.0*m;

  // variables for  division ...
  G4double halfXVoxelDimensionX = PhantomDimensionX/NumberOfVoxelsAlongX;
  G4double halfXVoxelDimensionZ = PhantomDimensionZ;
  G4double voxelXThickness = 2*halfXVoxelDimensionX;


  // world volume of ROGeometry ...
  G4Box *ROWorld = new G4Box("ROWorld",
			     expHall_x,
			     expHall_y,
			     expHall_z);

  G4LogicalVolume *ROWorldLog = new G4LogicalVolume(ROWorld,
						    H2O,
						    "ROWorldLog",
						    0,0,0);

  G4VPhysicalVolume *ROWorldPhys = new G4PVPlacement(0,
						     G4ThreeVector(),
						     "ROWorldPhys",
						     ROWorldLog,
						     0,false,0);
  
  // phantom ROGeometry ... 
  G4Box *ROPhantom = new G4Box("ROPhantom", 
			       PhantomDimensionX, 
			       PhantomDimensionY, 
			       PhantomDimensionZ);

  G4LogicalVolume *ROPhantomLog = new G4LogicalVolume(ROPhantom,
						      H2O,
						      "ROPhantomLog",
						      0,0,0);

  G4VPhysicalVolume *ROPhantomPhys = new G4PVPlacement(0,
						       G4ThreeVector(),
						       "PhantomPhys",
                                                       ROPhantomLog,
                                                       ROWorldPhys,
                                                       false,0);
 
  // ROGeomtry: Voxel division
 
  // X division first... 
  G4Box *ROPhantomXDivision = new G4Box("ROPhantomXDivision",
					halfXVoxelDimensionX,
					halfXVoxelDimensionZ,
					halfXVoxelDimensionZ);

  G4LogicalVolume *ROPhantomXDivisionLog = new G4LogicalVolume(ROPhantomXDivision,
							       H2O,
							       "ROPhantomXDivisionLog",
							       0,0,0);

  G4VPhysicalVolume *ROPhantomXDivisionPhys = new G4PVReplica("ROPhantomXDivisionPhys",
                                                              ROPhantomXDivisionLog,
                                                              ROPhantomPhys,
                                                              kXAxis,
                                                              NumberOfVoxelsAlongX,
                                                              voxelXThickness);
  // ...then Z division
  
  G4Box *ROPhantomZDivision = new G4Box("ROPhantomZDivision",
					halfXVoxelDimensionX,
					halfXVoxelDimensionZ, 
					halfXVoxelDimensionX);

  G4LogicalVolume *ROPhantomZDivisionLog = new G4LogicalVolume(ROPhantomZDivision,
							       H2O,
							       "ROPhantomZDivisionLog",
							       0,0,0);

  G4VPhysicalVolume *ROPhantomZDivisionPhys = new G4PVReplica("ROPhantomZDivisionPhys",
							      ROPhantomZDivisionLog,
							      ROPhantomXDivisionPhys,
							      kZAxis,
							      NumberOfVoxelsAlongZ,
							      voxelXThickness);
  // ...then Y  division

  G4Box *ROPhantomYDivision = new G4Box("ROPhantomYDivision",
					halfXVoxelDimensionX, 
					halfXVoxelDimensionX,
					halfXVoxelDimensionX);

  G4LogicalVolume *ROPhantomYDivisionLog = new G4LogicalVolume(ROPhantomYDivision,
							       H2O,
							       "ROPhantomYDivisionLog",
							       0,0,0);
 
  ROPhantomYDivisionPhys = new G4PVReplica("ROPhantomYDivisionPhys",
							      ROPhantomYDivisionLog,
							      ROPhantomZDivisionPhys,
							      kYAxis,
							      NumberOfVoxelsAlongZ,
							      voxelXThickness);

  MedLinacDummySD *dummySD = new  MedLinacDummySD;
  ROPhantomYDivisionLog->SetSensitiveDetector(dummySD);

  return ROWorldPhys;
}