Acceleration.h

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/* Copyright (C) 2002 - 2009, Bernd Speiser */
/* This file is part of Quantities.

PhysicalQuantities is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

PhysicalQuantities is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
  
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/

#ifndef _Acceleration_h
#define _Acceleration_h

// Quantity includes
#include "Quantity/Variable.h"
#include "Quantity/Constant.h"
#include "Quantity/QuantityCluster.h"
#include "PhysicalQuantities/Length.h"
#include "PhysicalQuantities/Time.h"

namespace quantity {
  namespace acceleration {

class Class;

class Unit;

/* declaration of Acceleration units */
class GalUnit;
class StandardAccelerationOfFreeFallUnit;

/* the MetrePerSquareSecond and prefixed variants */

typedef LOKI_TYPELIST_3(length::Metre, length::CentiMetre,
                                        length::MilliMetre) LengthList;

typedef unit::ComposeElement<Unit, LengthList, 
                               BSUtilities::Rational<1> > LengthElement;

typedef LOKI_TYPELIST_3(time::Second, time::MilliSecond, 
                                           time::MicroSecond) TimeList;

typedef unit::ComposeElement<Unit, TimeList, 
                                BSUtilities::Rational<-2> > TimeElement;

typedef 
  unit::ComposeBase<Unit, LOKI_TYPELIST_2(LengthElement, TimeElement)>
                                               AccelerationComposedUnit;

typedef unit::Composed<AccelerationComposedUnit, 
     LOKI_TYPELIST_2(length::Metre, time::Second)> MetrePerSquareSecond;
typedef unit::Composed<AccelerationComposedUnit, 
  LOKI_TYPELIST_2(length::CentiMetre, time::Second)> 
                                              CentiMetrePerSquareSecond;
typedef unit::Composed<AccelerationComposedUnit, 
  LOKI_TYPELIST_2(length::Metre, time::MilliSecond)> 
                                              MetrePerSquareMilliSecond;

/* declaration of other Acceleration units */
typedef unit::NonPrefixable<Unit, GalUnit> Gal;

typedef unit::NonPrefixable<Unit, 
     StandardAccelerationOfFreeFallUnit> StandardAccelerationOfFreeFall;

typedef LOKI_TYPELIST_5(MetrePerSquareSecond, 
  CentiMetrePerSquareSecond, MetrePerSquareMilliSecond, Gal, 
                                  StandardAccelerationOfFreeFall) Units;

/* Acceleration quantity */

typedef Quantity<Class> Quantity;

class DerivedAcceleration;

  } //end namespace acceleration


  template<typename ST>
    struct Standard<acceleration::AccelerationComposedUnit, ST>
    {
      static const ST ratio;
      static const bool exact;
    };

template<typename ST> const ST Standard<acceleration::AccelerationComposedUnit, ST>::ratio = 1.0;

template<typename ST> const bool Standard<acceleration::AccelerationComposedUnit, ST>::exact = true;


  template<typename ST>
    struct Standard<acceleration::Gal, ST>
    {
      static const ST ratio;
      static const bool exact;
    };

template<typename ST> const ST Standard<acceleration::Gal, ST>::ratio = 1.0e-2;

template<typename ST> const bool Standard<acceleration::Gal, ST>::exact = true;


  template<typename ST>
    struct Standard<acceleration::StandardAccelerationOfFreeFall, ST>
    {
      static const ST ratio;
      static const bool exact;
    };

template<typename ST> const ST Standard<acceleration::StandardAccelerationOfFreeFall, ST>::ratio 
                                                                                      = 9.80665;

template<typename ST> const bool Standard<acceleration::StandardAccelerationOfFreeFall, ST>::exact 
                                                                                         = true;

template<>
  struct QuantityTraits<acceleration::Class>
  {
    typedef
      dimension::Dimension<BSUtilities::Rational<1>,
        BSUtilities::Rational<0>, BSUtilities::Rational<-2>,
          BSUtilities::Rational<0>, BSUtilities::Rational<0>,
            BSUtilities::Rational<0>, BSUtilities::Rational<0> > Dimension;
    typedef acceleration::Unit UnitType;
    typedef acceleration::Units UnitList;
    typedef acceleration::MetrePerSquareSecond DefaultUnit;

    typedef acceleration::DerivedAcceleration DefaultDerivedQuantityType;

    static const std::string NameString;
    static const std::string SymbolString;

  };

// the derived quantity traits template for MetrePerSquareSecond Acceleration
template<>
  struct DerivedQuantityTraits<acceleration::Class, acceleration::DerivedAcceleration>
  {
    static const bool OverwriteName = false;
    static const bool OverwriteSymbol = false;

    static const std::string NameString;
    static const std::string SymbolString;

  };


typedef Variable<acceleration::Quantity> Acceleration;

typedef Constant<acceleration::Quantity> AccelerationConstant;

typedef QuantityVector<Variable, acceleration::Quantity> AccelerationVector;

} // end namespace quantity

#endif /* _Acceleration_h */

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