1 /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2    Copyright (c) 2016-2021 The plumed team
3    (see the PEOPLE file at the root of the distribution for a list of names)
4 
5    See http://www.plumed.org for more information.
6 
7    This file is part of plumed, version 2.
8 
9    plumed is free software: you can redistribute it and/or modify
10    it under the terms of the GNU Lesser General Public License as published by
11    the Free Software Foundation, either version 3 of the License, or
12    (at your option) any later version.
13 
14    plumed is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU Lesser General Public License for more details.
18 
19    You should have received a copy of the GNU Lesser General Public License
20    along with plumed.  If not, see <http://www.gnu.org/licenses/>.
21 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
22 #ifndef __PLUMED_tools_ERMSD_h
23 #define __PLUMED_tools_ERMSD_h
24 
25 #include "Tensor.h"
26 #include "Vector.h"
27 #include <vector>
28 #include <limits>
29 #include <string>
30 #include <map>
31 #include <utility>
32 
33 namespace PLMD {
34 
35 class PDB;
36 class Pbc;
37 
38 /// A class that implements ERMSD calculations
39 class ERMSD {
40   //std::map< std::pair <unsigned,unsigned> , double> targets;
41   //unsigned natoms;
42   std::vector<Vector4d> reference_mat;
43   unsigned natoms;
44   unsigned nresidues;
45   std::vector<std::pair <unsigned,unsigned> > pairs;
46   double cutoff;
47 
48 public:
49 /// Constructor
ERMSD()50   ERMSD(): natoms(0),nresidues(0), cutoff(0.0) {}
51 
52 /// clear the structure
53   void clear();
54 
55   bool inPair(unsigned i, unsigned j);
56 
57 /// set reference coordinates
58   void setReference(const std::vector<Vector> & reference, const std::vector<unsigned> & pairs_vec,double mycutoff=0.24);
59 
60   void calcMat(const std::vector<Vector> & positions, const Pbc& pbc,std::vector<Vector4d> &mat,std::vector<TensorGeneric<4,3> > & Gderivatives);
61 
62 /// Compute ermsd ( no pbc )
63 //  double calculate(const std::vector<Vector> & positions,
64 //                   std::vector<Vector> &derivatives, Tensor& virial) const ;
65 /// Compute ermsd ( with pbc )
66   double calculate(const std::vector<Vector>& positions, const Pbc& pbc,std::vector<Vector> &derivatives, Tensor& virial);
67 };
68 
69 }
70 
71 #endif
72 
73