siscone/vicinity.h

// -*- C++ -*-
// File: vicinity.h                                                          //
// Description: header file for particle vicinity (Cvicinity class)          //
// This file is part of the SISCone project.                                 //
// For more details, see http://projects.hepforge.org/siscone                //
//                                                                           //
// Copyright (c) 2006 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:: 123                                                          $//
// $Date:: 2007-03-01 02:52:16 +0100 (Thu, 01 Mar 2007)                     $//

#ifndef __VICINITY_H__
#define __VICINITY_H__

#include <vector>
#include <list>
#include "momentum.h"
#include "defines.h"
#include "quadtree.h"

namespace siscone{

  

class Cvicinity_inclusion {
public:
  Cvicinity_inclusion() : cone(false), cocirc(false) {}

  bool cone;    
  bool cocirc;  
};


class Cvicinity_elm{
 public:
  Cmomentum *v;

  Cvicinity_inclusion *is_inside;   

  // centre variables
  double eta;              
  double phi;              
  double angle;            
  bool side;               
  double cocircular_range; 


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

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


class Cvicinity{
 public:
  Cvicinity();

  Cvicinity(std::vector<Cmomentum> &_particle_list);

  ~Cvicinity();

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

  void build(Cmomentum *_parent, double _VR);

  // cone kinematical information
  Cmomentum *parent;         
  double VR;                 
  double VR2;                
  double R;                  
  double R2;                 
  double inv_R_EPS_COCIRC;   
  double inv_R_2EPS_COCIRC;  

  // particle list information
  int n_part;                                 
  std::vector<Cmomentum> plist;               
  std::vector<Cvicinity_inclusion> pincluded; 
  Cvicinity_elm *ve_list;                     
#ifdef USE_QUADTREE_FOR_STABILITY_TEST
  Cquadtree *quadtree;                        
#endif

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

 protected:
  void append_to_vicinity(Cmomentum *v);

  // internal variables
  double pcx;    
  double pcy;    
};

}

#endif