G3toG4MANY.cc

Go to the documentation of this file.

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
//
// $Id$
//
// By I. Hrivnacova, 22.10.01 

//#define G3G4DEBUG 1

#include "globals.hh"
#include "G3toG4MANY.hh"
#include "G3Pos.hh"
#include "G3RotTable.hh"
#include "G4SubtractionSolid.hh"

void G3toG4MANY(G3VolTableEntry* curVTE)
{
  if (curVTE->GetNoOverlaps() > 0) {
  
    // check consistency 
    if (!curVTE->HasMANY()) { 
      G4String text = "G3toG4MANY: volume ";
      text = text + curVTE->GetName() + " has specified overlaps \n";
      text = text + " but is not defined as MANY.";
      G4Exception("G3toG4MANY()", "G3toG40009",
                  FatalException, text);
      return;
    }  

    // only MANY volumes with one position are supported
    if (curVTE->NPCopies() != 1) {
      G4String text = "G3toG4MANY: volume ";
      text = text + curVTE->GetName() + " which has MANY has not just one position.";
      G4Exception("G3toG4MANY()", "G3toG40010",
                  FatalException, text);
      return;
    }  

    #ifdef G3G4DEBUG
    G4cout << "G3toG4MANY  " << curVTE->GetName() << " boolean" << G4endl;
    #endif

    G4Transform3D transform = GetTransform3D(curVTE->GetG3PosCopy(0)); 
    
    MakeBooleanSolids(curVTE, curVTE->GetOverlaps(), transform.inverse());
  }

  // process daughters
  for (G4int i=0; i<curVTE->GetNoDaughters(); i++)
    G3toG4MANY(curVTE->GetDaughter(i));
}

void MakeBooleanSolids(G3VolTableEntry* curVTE, G3VolTableEntryVector* overlaps,
               const G4Transform3D& transform)
{                
  // loop over overlap VTEs
  for (size_t i=0; i<overlaps->size(); i++){
   
    G3VolTableEntry* overlapVTE = (*overlaps)[i]; 

     // loop over clone VTEs
    for (G4int ij=0; ij<overlapVTE->GetMasterClone()->GetNoClones(); ij++){
    
      G3VolTableEntry* cloneVTE = overlapVTE->GetMasterClone()->GetClone(ij);   
   
      // loop over clone positions
      for (G4int j=0; j<cloneVTE->NPCopies(); j++){

        #ifdef G3G4DEBUG
        G4cout << "From '" << curVTE->GetName() << "' "
           << "cut '" << cloneVTE->GetName() << "' :"
           << i  << "th overlap (from " << overlaps->size() << ") "
           << ij << "th clone (from " << overlapVTE->GetMasterClone()->GetNoClones() << ") "
           << j  << "th copy (from " << cloneVTE->NPCopies() << ")  "
           << G4endl;
        #endif

        SubstractSolids(curVTE, cloneVTE, j, transform); 
      }
    }    
  }               
}           

void SubstractSolids(G3VolTableEntry* vte1, G3VolTableEntry* vte2,
                 G4int copy, const G4Transform3D& transform)
{                
  // vte2 transformation
  G4Transform3D transform2 = GetTransform3D(vte2->GetG3PosCopy(copy));
   
  // compose new name 
  G4String newName = vte1->GetSolid()->GetName();
  newName = newName + "-" + vte2->GetSolid()->GetName();   

  #ifdef G3G4DEBUG
  G4cout << "   " << newName << G4endl; 
  #endif

  G4VSolid* newSolid 
    = new G4SubtractionSolid(newName, vte1->GetSolid(), vte2->GetSolid(),
                             transform*transform2);
                 
  // update vte1
  vte1->SetSolid(newSolid);

  // process daughters
  for (G4int k=0; k<vte1->GetNoDaughters(); k++){
            
    G3VolTableEntry* dVTE = vte1->GetDaughter(k);               
     
    if (dVTE->NPCopies() != 1) {
      G4String text = "G3toG4MANY: volume ";
      text = text + dVTE->GetName() + " which has MANY has not just one position.";
      G4Exception("G3toG4MANY()", "G3toG40011",
                  FatalException, text);
      return;
    }
      
    G4Transform3D dt = GetTransform3D(dVTE->GetG3PosCopy(0)); 
    SubstractSolids(dVTE, vte2, copy, dt.inverse()*transform);
  } 
}           

G4Transform3D GetTransform3D(G3Pos* g3pos)
{
  G4int irot = g3pos->GetIrot();
  G4RotationMatrix* theMatrix = 0;
  if (irot>0) theMatrix = G3Rot.Get(irot);
  
  G4Rotate3D rotation;
  if (theMatrix) {            
     rotation = G4Rotate3D(*theMatrix);
  }

  G4Translate3D translation(*(g3pos->GetPos()));
  G4Transform3D transform3D = translation * (rotation.inverse());
  
  return transform3D;
}