/*------------------------------------------------------------------------------------------------------    File        : Globals.h   (GCM Library)  Authors      : Emmanuel Prados (UCLA/INRIA), Christophe Lenglet (INRIA), Jean-Philippe Pons (INRIA)    --------------  License     : This software is governed by the CeCILL-C license under French law and abiding by the   rules of distribution of free software.   Users can use, modify and/ or redistribute the software under the terms of the CeCILL-C. In particular,   the exercising of this right is conditional upon the obligation to make available to the community the   modifications made to the source code of the software so as to contribute to its evolution (e.g. by the   mean of the web; i.e. by publishing a web page).    In this respect, the risks associated with loading, using, modifying and/or developing or reproducing   the software by the user are brought to the user's attention, given its Free Software status, which may   make it complicated to use, with the result that its use is reserved for developers and experienced   professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the   suitability of the software as regards their requirements in conditions enabling the security of their  systems and/or data to be ensured and, more generally, to use and operate it in the same conditions of   security. This Agreement may be freely reproduced and published, provided it is not altered, and that   no provisions are either added or removed herefrom.     CeCILL-C FREE SOFTWARE LICENSE AGREEMENT is available in the file                           Licence_CeCILL-C_V1-en.txt   or at                            http://www.cecill.info/index.en.html.  This Agreement may apply to any or all software for which the holder of the economic rights decides to   submit the use thereof to its provisions.    --------------  Associated publications  : This C++ code corresponds to the implementation of the algorithm presented   in the following articles:    - E. Prados, C. Lenglet, J.P. Pons, N. Wotawa, R. Deriche, O. Faugeras, S. Soatto;     Control Theory and Fast Marching Methods for Brain Connectivity Mapping; INRIA Research Report 5845     UCLA Computer Science Department Technical Report 060004, February 2006.  - E. Prados, C. Lenglet, J.P. Pons, N. Wotawa, R. Deriche, O. Faugeras, S. Soatto;     Control Theory and Fast Marching Methods for Brain Connectivity Mapping;     Proc. IEEE Computer Society Conference on Computer Vision and Pattern Recognition, New York, NY,     I: 1076-1083, June 17-22, 2006.    - For more references, we refer to the official web page of the GCM Library and to authors' web pages.  Please, if you use the GCM library in you work, make sure you will include the reference to the work   of the authors in your publications.    ----------------------------------------------------------------------------------------------------*/#ifndef FASTLEVELSETGLOBALS_H#define FASTLEVELSETGLOBALS_H#include <list>#ifndef sqr#define sqr(x) ((x)*(x))#endifnamespace FastLevelSet {    ////////////////////////////////////////////////////////////////////////////////////////////////////////////    // Constants    const float DELTA = 1.0f;    const float EPS = 1e-6f;        ////////////////////////////////////////////////////////////////////////////////////////////////////////////    // Types    struct stCoord {        public:        int x,y,z,n;        stCoord(int _x, int _y, int _z, int _n) : x(_x), y(_y), z(_z), n(_n) {}    };    typedef std::list<stCoord> CoordList;    typedef CoordList::iterator CoordListIterator;    typedef CoordList::const_iterator const_CoordListIterator;}#endif