siscone/spherical/vicinity.h

// -*- C++ -*-
// File: vicinity.h                                                          //
// Description: header file for particle vicinity (Cvicinity class)          //
// This file is part of the SISCone project.                                 //
// WARNING: this is not the main SISCone trunk but                           //
//          an adaptation to spherical coordinates                           //
// For more details, see http://projects.hepforge.org/siscone                //
//                                                                           //
// Copyright (c) 2006-2008 Gavin Salam and Gregory Soyez                          //
//                                                                           //
// 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.                                       //
//                                                                           //
// This program is distributed in the hope that it will be useful,           //
// but WITHOUT ANY WARRANTY; without even the implied warranty of            //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
// GNU General Public License for more details.                              //
//                                                                           //
// You should have received a copy of the GNU General Public License         //
// along with this program; if not, write to the Free Software               //
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA //
//                                                                           //
// $Revision:: 255                                                          $//
// $Date:: 2008-07-12 17:40:35 +0200 (Sat, 12 Jul 2008)                     $//

#ifndef __SPH_VICINITY_H__
#define __SPH_VICINITY_H__

#include <siscone/vicinity.h>
#include <vector>
#include <list>
#include "momentum.h"
#include <siscone/defines.h>
#ifdef USE_QUADTREE_FOR_STABILITY_TEST
#include <siscone/quadtree.h>
#endif

namespace siscone_spherical{

  
class CSphvicinity_elm{
 public:
  CSphmomentum *v;

  siscone::Cvicinity_inclusion *is_inside;   

  // centre variables
  CSph3vector centre;         
  double angle;            
  bool side;               
  double cocircular_range; 


  std::list<CSphvicinity_elm * > cocircular;                                          
};

bool ve_less(CSphvicinity_elm *ve1, CSphvicinity_elm *ve2);


class CSphvicinity{
 public:
  CSphvicinity();

  CSphvicinity(std::vector<CSphmomentum> &_particle_list);

  ~CSphvicinity();

  void set_particle_list(std::vector<CSphmomentum> &_particle_list);

  void build(CSphmomentum *_parent, double _VR);

  // cone kinematical information
  CSphmomentum *parent;      
  double VR;                 
  double VR2;                
  double cosVR;              
  double R;                  
  double R2;                 
  double tan2R;              
  double D2_R;               
  double inv_R_EPS_COCIRC;   
  double inv_R_2EPS_COCIRC;  

  // particle list information
  int n_part;                                 
  std::vector<CSphmomentum> plist;            

  std::vector<siscone::Cvicinity_inclusion> pincluded; 
  CSphvicinity_elm *ve_list;                  
#ifdef USE_QUADTREE_FOR_STABILITY_TEST
  siscone::Cquadtree *quadtree;               
#endif

  // vicinity information
  std::vector<CSphvicinity_elm*> vicinity;    
  unsigned int vicinity_size;                 

 protected:
  void append_to_vicinity(CSphmomentum *v);

  // internal variables
  CSph3vector parent_centre;    
  CSph3vector angular_dir1;     
  CSph3vector angular_dir2;     
};

}

#endif