/usr/include/odinseq/seqgrad.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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seqgrad.h - description
-------------------
begin : Wed Aug 8 2001
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 SEQGRAD_H
#define SEQGRAD_H
#include <odinseq/seqclass.h>
class RotMatrix; // forward declaration
/**
* @addtogroup odinseq_internals
* @{
*/
/**
* This is the abstract base class for all objects that represent
* gradient fields
*/
class SeqGradInterface : public virtual SeqClass {
public:
/**
* Changes the strength of the gradient object
*/
virtual SeqGradInterface& set_strength(float gradstrength) = 0;
/**
* Changes the polarity of the gradient, i.e. inverts the sign of the gradient strength
*/
virtual SeqGradInterface& invert_strength() = 0;
/**
* Returns the strength of the gradient object
*/
virtual float get_strength() const = 0;
/**
* Returns the integral vector of the gradient course
*/
virtual fvector get_gradintegral() const = 0;
/**
* Returns the norm of the integral vector of the gradient course
*/
float get_gradintegral_norm() const;
/**
* Returns the duration of the gradient object. This function returns
* only the effective duration during whichthe gradient is active,
* any delays before and after the gradient are omitted.
*/
virtual double get_gradduration() const = 0;
/**
* This function can be used to specify a rotation of the gradient object
* in the spatial domain, the rotation will be applied to this object only
* rather than to the whole sequence.
*/
virtual SeqGradInterface& set_gradrotmatrix(const RotMatrix& matrix) = 0;
protected:
SeqGradInterface() {}
virtual ~SeqGradInterface() {}
};
/** @}
*/
#endif
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