#include "Hit.h"
#include "Transformation.h"
#include <stdexcept>

pool_tutorial::Hit::Hit():
  m_x( 0 ),
  m_y( 0 ),
  m_z( 0 ),
  m_value( 0 ),
  m_upToDate( false ),
  m_transformation( 0 ),
  m_digit()
{}

pool_tutorial::Hit::Hit( const pool_tutorial::Hit& rhs ):
  m_x( rhs.m_x ),
  m_y( rhs.m_y ),
  m_z( rhs.m_z ),
  m_value( rhs.m_value ),
  m_upToDate( rhs.m_upToDate ),
  m_transformation( rhs.m_transformation ),
  m_digit( rhs.m_digit )
{}

pool_tutorial::Hit::~Hit()
{}

pool_tutorial::Hit&
pool_tutorial::Hit::operator=( const pool_tutorial::Hit& rhs )
{
  m_x = rhs.m_x;
  m_y = rhs.m_y;
  m_z = rhs.m_z;
  m_value = rhs.m_value;
  m_upToDate = rhs.m_upToDate;
  m_transformation = rhs.m_transformation;
  m_digit = rhs.m_digit;
  return *this;
}

double
pool_tutorial::Hit::x() const
{
  if ( ! m_upToDate ) {
    const_cast< pool_tutorial::Hit* >( this )->updateValues();
  }
  return m_x;
}

double
pool_tutorial::Hit::y() const
{
  if ( ! m_upToDate ) {
    const_cast< pool_tutorial::Hit* >( this )->updateValues();
  }
  return m_y;
}

double
pool_tutorial::Hit::z() const
{
  if ( ! m_upToDate ) {
    const_cast< pool_tutorial::Hit* >( this )->updateValues();
  }
  return m_z;
}

double
pool_tutorial::Hit::value() const
{
  if ( ! m_upToDate ) {
    const_cast< pool_tutorial::Hit* >( this )->updateValues();
  }
  return m_value;
}

pool_tutorial::Digit&
pool_tutorial::Hit::digit()
{
  if ( ! m_digit ) {
    throw std::runtime_error( "digit not set" );
  }
  return *m_digit;
}

const pool_tutorial::Digit&
pool_tutorial::Hit::digit() const
{
  if ( ! m_digit ) {
    throw std::runtime_error( "digit not set" );
  }
  return *m_digit;
}

void
pool_tutorial::Hit::setDigit( const pool::Ref< pool_tutorial::Digit >& digit )
{
  m_digit = digit;
  m_upToDate = false;
}

void
pool_tutorial::Hit::setTransformation( pool_tutorial::Transformation* transformation )
{
  m_transformation = transformation;
}

void
pool_tutorial::Hit::updateValues()
{
  pool_tutorial::Digit& digit = this->digit();
  m_value = m_transformation->value( digit.value() );
  const pool_tutorial::Transformation::Point3d& point = m_transformation->position( digit.index() );
  m_x = point.x;
  m_y = point.y;
  m_z = point.z;
  m_upToDate = true;
}