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MultiGaussianState.icc
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MultiGaussianState.icc
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#include "TrackingTools/GsfTools/interface/MultiGaussianState.h"
#include "TrackingTools/GsfTools/interface/MultiGaussianStateCombiner.h"
// template <unsigned int N>
// MultiGaussianState<N>::MultiGaussianState
// (const std::vector< boost::shared_ptr<SingleState> >& stateV) :
// theCombinedStateUp2Date(false) {
// theComponents.reserve(stateV.size());
// for ( typename std::vector< boost::shared_ptr<SingleState> >::const_iterator ic=stateV.begin();
// ic!=stateV.end(); ++ic ) theComponents.push_back( boost::shared_ptr<const SingleState>(*ic) );
// }
template <unsigned int N>
double MultiGaussianState<N>::weight() const
{
if (theCombinedStateUp2Date) return theCombinedState->weight();
double result(0.);
for ( typename SingleStateContainer::const_iterator ic=theComponents.begin();
ic!=theComponents.end(); ic++ ) result += (**ic).weight();
return result;
}
template <unsigned int N>
const typename MultiGaussianState<N>::Vector &
MultiGaussianState<N>::mean() const
{
checkCombinedState();
return theCombinedState->mean();
}
template <unsigned int N>
const typename MultiGaussianState<N>::Matrix &
MultiGaussianState<N>::covariance() const
{
checkCombinedState();
return theCombinedState->covariance();
}
template <unsigned int N>
const typename MultiGaussianState<N>::Matrix &
MultiGaussianState<N>::weightMatrix() const
{
checkCombinedState();
return theCombinedState->weightMatrix();
}
template <unsigned int N>
void MultiGaussianState<N>::checkCombinedState() const
{
if (theCombinedStateUp2Date) return;
MultiGaussianStateCombiner<N> theCombiner;
theCombinedState = theCombiner.combine(theComponents);
theCombinedStateUp2Date = true;
// ++constructsCombinedState_;
}
template <unsigned int N> void
MultiGaussianState<N>::setWeight (double newWeight)
{
double wgt = weight();
if ( wgt>DBL_MIN ) rescaleWeight(newWeight/wgt);
}
template <unsigned int N> void
MultiGaussianState<N>::rescaleWeight (double scale)
{
for ( typename std::vector<SingleState>::const_iterator ic=theComponents.begin();
ic!=theComponents.end(); ic++ ) (**ic).rescaleWeight(scale);
if (theCombinedStateUp2Date) theCombinedState->rescaleWeight(scale);
}

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