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//
// $Id$
//
//
// Original author: Witold Wolski <wewolski@gmail.com>
//
// Copyright : ETH Zurich
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef MASSCOMPAREFUNCTORS_H
#define MASSCOMPAREFUNCTORS_H
#include <stdlib.h>
#include <cstdio>
#include <complex>
/*! \file MassCompareFunctors.h
Defines function objects which are used by SortedMatcher and UnsortedMatcher.
*/
namespace ralab
{
namespace base
{
namespace resample
{
inline double resolution2ppm(double resolution){
return 1/resolution * 1e6;
}
///TODO Do checking on TReal thats a real
template<typename TReal>
struct PPMCompFunctor
{
typedef TReal value_type;
value_type window_;
value_type ppm_;
PPMCompFunctor(value_type window //!< in ppm
):window_(window),ppm_(1e-6)
{}
/// returns window at mass
inline value_type operator()(value_type val)
{
return((window_ * val)*ppm_);
}
/// if dist pval cval smaller then window returns true
inline bool operator()(value_type pval, value_type cval)
{
return( std::abs(pval - cval) < operator()(pval) );
}
};
/// Da Comparator - constant mass error
template<typename TReal>
struct DaCompFunctor
{
typedef TReal value_type;
value_type window_;
DaCompFunctor(value_type window) : window_(window)
{
}
/// window at mass
inline value_type operator()(value_type /*val*/)
{
return( window_ );
}
/** if dist pval cval smaller then window returns true */
inline bool operator()(value_type pval, value_type cval)
{
return( std::abs(pval - cval) < operator()(pval) );
}
};
/// FTMS Comparator
template<typename TReal>
struct FTMSCompFunctor
{
typedef TReal value_type;
value_type window_;
value_type mass_;
value_type invR_;//FTMS resolution
/// brief window at mass, i.e. 0.1 Da at 400Da
FTMSCompFunctor( value_type window , value_type mass ) : window_(window) , mass_(mass)
{
invR_ = sqrt(window_)/mass_;
}
/// brief returns size of windows for this mass
inline value_type operator()(value_type val)
{
value_type pR = (val*invR_);
return( pR*pR );
}
/// brief compares two masses, returns true if they match false otherwise
inline bool operator()(value_type pval, value_type cval)
{
return( std::abs( pval - cval ) < operator()(pval) );
}
};
}//end resample
}//end MSALGO
}//end ralab
#endif // MASSCOMPAREFUNCTORS_H
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