/usr/include/odinseq/seqgradwave.h is in libodin-dev 1.8.8-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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seqgradwave.h - description
-------------------
begin : Tue Aug 13 2002
copyright : (C) 2000-2014 by Thies H. Jochimsen
email : thies@jochimsen.de
***************************************************************************/
/***************************************************************************
* *
* This program 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. *
* *
***************************************************************************/
#ifndef SEQGRADWAVE_H
#define SEQGRADWAVE_H
#include <odinseq/seqgradchan.h>
/**
* @addtogroup odinseq
* @{
*/
/**
* \brief Gradient Waveform
*
* This class represents a gradient object with an arbitrarily shaped gradient field
* The physical gradient strengths of one data point is the product of the value
* of the waveform at that point and the gradient strength of this object
*/
class SeqGradWave : public SeqGradChan {
public:
/**
* Constructs a gradient waveform labeled 'object_label' with the following properties:
* - gradchannel: The channel this object should be played out
* - gradduration: The duration of this gradient object
* - maxgradstrength: The maximum gradient strength for this object
* - waveform: The waveform that will be played out
*/
SeqGradWave(const STD_string& object_label,direction gradchannel, double gradduration,
float maxgradstrength,const fvector& waveform);
/**
* Constructs a copy of 'sgw'
*/
SeqGradWave(const SeqGradWave& sgw);
/**
* Construct an empty gradient object with the given label
*/
SeqGradWave(const STD_string& object_label = "unnamedSeqGradWave");
/**
* Specifies the waveform that will be used
*/
SeqGradWave& set_wave(const fvector& waveform);
/**
* Returns the waveform that will be used
*/
const fvector& get_wave() const {return wave;}
/**
* Returns the integral of the waveform time tmin to time tmax (relative to the starting point of the ramp)
*/
float get_integral(double tmin, double tmax) const;
/**
* Returns the number of digitised points for the waveform
*/
unsigned int get_npts() const;
/**
* Returns the number of digitised points for the waveform
*/
unsigned int size() const {return get_npts();}
/**
* Returns the sampling rate of the waveform
*/
double get_timestep() const {return secureDivision(get_gradduration(),double(get_npts()));}
/**
* Returns the i'th element of the waveform
*/
float operator [] (unsigned int i) const {return wave[i];}
/**
* Assignment operator that makes this gradient channel object become a copy of 'sgw'
*/
SeqGradWave& operator = (const SeqGradWave& sgw);
protected:
fvector wave;
private:
// overwriting virtual functions from SeqClass
bool prep();
// overwriting virtual functions from SeqGradChan
int get_wavesize() const;
void resize(unsigned int newsize);
SeqGradChan& get_subchan(double starttime, double endtime) const;
STD_string get_grdpart(float matrixfactor) const;
float get_integral() const {return get_integral(0.0,get_gradduration());}
void check_wave();
};
/** @}
*/
#endif
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