CocoaUnitsTable.h

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//
// This class is copied from G4UnitsTable
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#ifndef CocoaUnitsTable_HH
#define CocoaUnitsTable_HH

#include "Alignment/CocoaUtilities/interface/CocoaGlobals.h"
#include <vector>
#include "CLHEP/Vector/ThreeVector.h"

class CocoaUnitsCategory;
typedef std::vector<CocoaUnitsCategory*> CocoaUnitsTable;


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class CocoaUnitDefinition
{
public:  // with description

    CocoaUnitDefinition(const ALIstring& name, const ALIstring& symbol,
                     const ALIstring& category, ALIdouble value);
        
public:  // without description
        
   ~CocoaUnitDefinition();
    ALIint operator==(const CocoaUnitDefinition&) const;
    ALIint operator!=(const CocoaUnitDefinition&) const;
    
private:

    CocoaUnitDefinition(const CocoaUnitDefinition&);
    CocoaUnitDefinition& operator=(const CocoaUnitDefinition&);
   
public:  // with description

    const ALIstring& GetName()   const {return Name;}
    const ALIstring& GetSymbol() const {return SymbolName;}
    ALIdouble        GetValue()  const {return Value;}
    
    void          PrintDefinition();
    
    static void BuildUnitsTable();    
    static void PrintUnitsTable();
    
    static CocoaUnitsTable& GetUnitsTable();

    static ALIdouble GetValueOf (const ALIstring&);
    static ALIstring GetCategory(const ALIstring&);

private:

    ALIstring Name;            // SI name
    ALIstring SymbolName;      // SI symbol
    ALIdouble Value;           // value in the internal system of units
    
    static 
    CocoaUnitsTable theUnitsTable;   // table of Units
    
    
    size_t CategoryIndex;         // category index of this unit
};

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typedef std::vector<CocoaUnitDefinition*> CocoaUnitsContainer;

class CocoaUnitsCategory
{
public:  // without description

    CocoaUnitsCategory(const ALIstring& name);
   ~CocoaUnitsCategory();
    ALIint operator==(const CocoaUnitsCategory&) const;
    ALIint operator!=(const CocoaUnitsCategory&) const;
    
private:

    CocoaUnitsCategory(const CocoaUnitsCategory&);
    CocoaUnitsCategory& operator=(const CocoaUnitsCategory&);
   
public:  // without description

    const ALIstring&   GetName()      const {return Name;}
    CocoaUnitsContainer& GetUnitsList()       {return UnitsList;}
    ALIint             GetNameMxLen() const {return NameMxLen;}
    ALIint             GetSymbMxLen() const {return SymbMxLen;}
    void  UpdateNameMxLen(ALIint len) {if (NameMxLen<len) NameMxLen=len;}
    void  UpdateSymbMxLen(ALIint len) {if (SymbMxLen<len) SymbMxLen=len;}
    void  PrintCategory();

private:

    ALIstring          Name;        // dimensional family: Length,Volume,Energy ...
    CocoaUnitsContainer  UnitsList;   // List of units in this family
    ALIint             NameMxLen;   // max length of the units name
    ALIint             SymbMxLen;   // max length of the units symbol
};

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class CocoaBestUnit
{
public:  // with description

    CocoaBestUnit(ALIdouble internalValue, const ALIstring& category);
    CocoaBestUnit(const CLHEP::Hep3Vector& internalValue, const ALIstring& category);    
      // These constructors convert a physical quantity from its internalValue
      // into the most appropriate unit of the same category.
      // In practice it builds an object VU = (newValue, newUnit)

   ~CocoaBestUnit();
   
public:  // without description

    ALIdouble*  GetValue()                 {return Value;}
    const ALIstring&   GetCategory() const {return Category;}
    size_t     GetIndexOfCategory() const {return IndexOfCategory;}
    
public:  // with description 
   
    friend
    std::ostream&  operator<<(std::ostream&,CocoaBestUnit VU);
      // Default format to print the objet VU above.

private:

    ALIdouble   Value[3];        // value in the internal system of units
    ALIint      nbOfVals;        // ALIdouble=1; CLHEP::Hep3Vector=3
    ALIstring   Category;        // dimensional family: Length,Volume,Energy ...
    size_t IndexOfCategory;     // position of Category in UnitsTable
};

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#endif