AliMUONGeometryBuilder.h

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/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

// $Id$


#ifndef ALI_MUON_GEOMETRY_BUILDER_H
#define ALI_MUON_GEOMETRY_BUILDER_H

#include "AliMUONGeometry.h"

#include <TObject.h>
#include <TGeoMatrix.h>

class TObjArray;

class AliModule;
class AliMUONVGeometryBuilder;

class AliMUONGeometryBuilder : public TObject 
{
  public:
    AliMUONGeometryBuilder(AliModule* detector);
    AliMUONGeometryBuilder();
    virtual  ~AliMUONGeometryBuilder();
    
    // static methods
    static TGeoHMatrix Multiply(const TGeoHMatrix& m1, const TGeoHMatrix& m2); 
    static TGeoHMatrix Multiply(const TGeoHMatrix& m1, const TGeoHMatrix& m2,
                                const TGeoHMatrix& m3); 
    static TGeoHMatrix Multiply(const TGeoHMatrix& m1, const TGeoHMatrix& m2,
                                const TGeoHMatrix& m3, const TGeoHMatrix& m4); 

    // methods
    //
    void  AddBuilder(AliMUONVGeometryBuilder* geomBuilder);
    void  CreateGeometry();
    void  CreateMaterials();

    void  InitGeometry();
    void  InitGeometry(const TString& svmapFileName);
    void  UpdateInternalGeometry();

    void  WriteSVMaps();
    void  WriteSVMaps(const TString& fileName, 
                      Bool_t rebuild = true, Bool_t writeEnvelopes = true);
    
    // Geometry parametrisation
    const AliMUONGeometry*            GetGeometry() const;
    const AliMUONGeometryTransformer* GetTransformer() const;

    // Alignement
    virtual Bool_t  GetAlign() const;
    virtual void    SetAlign(Bool_t align = true);
    virtual void    SetAlign(const TString& fileName, Bool_t align = true);
 
  protected:
    AliMUONGeometryBuilder(const AliMUONGeometryBuilder& right);
    AliMUONGeometryBuilder&  operator = (const AliMUONGeometryBuilder& right);
 
  private:
    // static methods
    static const TString& GetDefaultTransformFileName();    
    static const TString& GetDefaultSVMapFileName();    
    static const TString& GetOutFileNameExtension();        

    // method
    void PlaceVolume(const TString& name, const TString& mName, Int_t copyNo, 
             const TGeoHMatrix& matrix, Int_t npar, Double_t* param,
       const char* only, Bool_t makeAssembly = false) const;
    void CreateGeometryWithTGeo();
    void CreateGeometryWithoutTGeo();
    void SetAlignToBuilder(AliMUONVGeometryBuilder* builder) const;      

    // data members
    AliModule*       fModule;              
    Bool_t           fAlign;               
    TString          fTransformFileName;   
    TString          fSVMapFileName;       
    TGeoCombiTrans   fGlobalTransformation;
    TObjArray*       fGeometryBuilders;    
    AliMUONGeometry* fGeometry;            

  ClassDef(AliMUONGeometryBuilder,6)  // Geometry builder
};

// inline functions

inline void  AliMUONGeometryBuilder::InitGeometry()
{ InitGeometry(fSVMapFileName); }

inline void  AliMUONGeometryBuilder::WriteSVMaps()
{ WriteSVMaps(fSVMapFileName + GetOutFileNameExtension()); }

inline 
const AliMUONGeometry* AliMUONGeometryBuilder::GetGeometry() const
{ return fGeometry; }

inline 
const AliMUONGeometryTransformer* AliMUONGeometryBuilder::GetTransformer() const
{ return fGeometry->GetTransformer(); }

inline Bool_t  AliMUONGeometryBuilder::GetAlign() const
{ return fAlign; }

#endif //ALI_MUON_GEOMETRY_BUILDER_H