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38 #ifndef GMX_TOPOLOGY_IDEF_H
39 #define GMX_TOPOLOGY_IDEF_H
46 #include "gromacs/math/vectypes.h"
47 #include "gromacs/topology/ifunc.h"
48 #include "gromacs/utility/basedefinitions.h"
49 #include "gromacs/utility/real.h"
51 struct gmx_ffparams_t
;
53 typedef union t_iparams
{
54 /* Some parameters have A and B values for free energy calculations.
55 * The B values are not used for regular simulations of course.
56 * Free Energy for nonbondeds can be computed by changing the atom type.
57 * The harmonic type is used for all harmonic potentials:
58 * bonds, angles and improper dihedrals
66 real rA
, krA
, rB
, krB
;
70 real klinA
, aA
, klinB
, aB
;
74 real lowA
, up1A
, up2A
, kA
, lowB
, up1B
, up2B
, kB
;
76 /* No free energy supported for cubic bonds, FENE, WPOL or cross terms */
91 real r1e
, r2e
, r3e
, krt
;
95 real thetaA
, kthetaA
, r13A
, kUBA
, thetaB
, kthetaB
, r13B
, kUBB
;
107 real alpha
, drcut
, khyp
;
111 real al_x
, al_y
, al_z
, rOH
, rHH
, rOD
;
115 real a
, alpha1
, alpha2
, rfac
;
123 real c6A
, c12A
, c6B
, c12B
;
127 real fqq
, qi
, qj
, c6
, c12
;
131 real qi
, qj
, c6
, c12
;
133 /* Proper dihedrals can not have different multiplicity when
134 * doing free energy calculations, because the potential would not
135 * be periodic anymore.
147 /* Settle can not be used for Free energy calculations of water bond geometry.
148 * Use shake (or lincs) instead if you have to change the water bonds.
156 real b0A
, cbA
, betaA
, b0B
, cbB
, betaB
;
160 real pos0A
[DIM
], fcA
[DIM
], pos0B
[DIM
], fcB
[DIM
];
164 real pos0
[DIM
], r
, k
;
169 real rbcA
[NR_RBDIHS
], rbcB
[NR_RBDIHS
];
173 real cbtcA
[NR_CBTDIHS
], cbtcB
[NR_CBTDIHS
];
177 real a
, b
, c
, d
, e
, f
;
184 /* NOTE: npair is only set after reading the tpx file */
187 real low
, up1
, up2
, kfac
;
188 int type
, label
, npair
;
192 real phiA
, dphiA
, kfacA
, phiB
, dphiB
, kfacB
;
196 int ex
, power
, label
;
211 real buf
[MAXFORCEPARAM
];
212 } generic
; /* Conversion */
215 typedef int t_functype
;
217 /* List of listed interactions, see description further down.
219 * TODO: Consider storing the function type as well.
220 * TODO: Consider providing per interaction access.
222 struct InteractionList
224 /* Returns the total number of elements in iatoms */
225 int size() const { return static_cast<int>(iatoms
.size()); }
227 /* Returns whether the list is empty */
228 bool empty() const { return iatoms
.empty(); }
230 /* Adds one interaction to the list */
231 template<std::size_t numAtoms
>
232 void push_back(const int parameterType
, const std::array
<int, numAtoms
>& atoms
)
234 const std::size_t oldSize
= iatoms
.size();
235 iatoms
.resize(iatoms
.size() + 1 + numAtoms
);
236 iatoms
[oldSize
] = parameterType
;
237 for (std::size_t i
= 0; i
< numAtoms
; i
++)
239 iatoms
[oldSize
+ 1 + i
] = atoms
[i
];
243 /* Adds one interaction to the list */
244 void push_back(const int parameterType
, const int numAtoms
, const int* atoms
)
246 const std::size_t oldSize
= iatoms
.size();
247 iatoms
.resize(iatoms
.size() + 1 + numAtoms
);
248 iatoms
[oldSize
] = parameterType
;
249 for (int i
= 0; i
< numAtoms
; i
++)
251 iatoms
[oldSize
+ 1 + i
] = atoms
[i
];
255 /* Appends \p ilist at the back of the list */
256 void append(const InteractionList
& ilist
)
258 iatoms
.insert(iatoms
.end(), ilist
.iatoms
.begin(), ilist
.iatoms
.end());
261 /* Clears the list */
262 void clear() { iatoms
.clear(); }
264 /* List of interactions, see explanation further down */
265 std::vector
<int> iatoms
;
268 /* List of interaction lists, one list for each interaction type
270 * TODO: Consider only including entries in use instead of all F_NRE
272 using InteractionLists
= std::array
<InteractionList
, F_NRE
>;
274 /* Deprecated list of listed interactions */
277 /* Returns the total number of elements in iatoms */
278 int size() const { return nr
; }
280 /* Returns whether the list is empty */
281 bool empty() const { return nr
== 0; }
288 /* TODO: Remove t_ilist and remove templating on list type in mshift.cpp */
291 * The structs InteractionList and t_ilist defines a list of atoms with their interactions.
292 * General field description:
294 * the size (nr elements) of the interactions array (iatoms[]).
296 * specifies which atoms are involved in an interaction of a certain
297 * type. The layout of this array is as follows:
299 * +-----+---+---+---+-----+---+---+-----+---+---+---+-----+---+---+...
300 * |type1|at1|at2|at3|type2|at1|at2|type1|at1|at2|at3|type3|at1|at2|
301 * +-----+---+---+---+-----+---+---+-----+---+---+---+-----+---+---+...
303 * So for interaction type type1 3 atoms are needed, and for type2 and
304 * type3 only 2. The type identifier is used to select the function to
305 * calculate the interaction and its actual parameters. This type
306 * identifier is an index in a params[] and functype[] array.
309 /*! \brief Type for returning a list of InteractionList references
311 * TODO: Remove when the function type is made part of InteractionList
313 struct InteractionListHandle
315 const int functionType
; //!< The function type
316 const std::vector
<int>& iatoms
; //!< Reference to interaction list
319 /*! \brief Returns a list of all non-empty InteractionList entries with any of the interaction flags in \p flags set
321 * \param[in] ilists Set of interaction lists
322 * \param[in] flags Bit mask with one or more IF_... bits set
324 static inline std::vector
<InteractionListHandle
> extractILists(const InteractionLists
& ilists
, int flags
)
326 std::vector
<InteractionListHandle
> handles
;
327 for (size_t ftype
= 0; ftype
< ilists
.size(); ftype
++)
329 if ((interaction_function
[ftype
].flags
& flags
) && !ilists
[ftype
].empty())
331 handles
.push_back({ static_cast<int>(ftype
), ilists
[ftype
].iatoms
});
337 /*! \brief Returns the stride for the iatoms array in \p ilistHandle
339 * \param[in] ilistHandle The ilist to return the stride for
341 static inline int ilistStride(const InteractionListHandle
& ilistHandle
)
343 return 1 + NRAL(ilistHandle
.functionType
);
346 struct gmx_cmapdata_t
348 std::vector
<real
> cmap
; /* Has length 4*grid_spacing*grid_spacing, */
349 /* there are 4 entries for each cmap type (V,dVdx,dVdy,d2dVdxdy) */
354 int grid_spacing
= 0; /* Grid spacing */
355 std::vector
<gmx_cmapdata_t
> cmapdata
; /* Lists of grids with actual, pre-interpolated data */
367 /* Struct with list of interaction parameters and lists of interactions
369 * TODO: Convert to a proper class with private data members so we can
370 * ensure that the free-energy sorting and sorting setting is consistent.
372 class InteractionDefinitions
377 * \param[in] ffparams The interaction parameters, the lifetime of the created object should not exceed the lifetime of the passed parameters
379 InteractionDefinitions(const gmx_ffparams_t
& ffparams
);
381 // Clears data not read in from ffparams
384 // The interaction parameters
385 const std::vector
<t_iparams
>& iparams
;
386 // The function type per type
387 const std::vector
<int>& functype
;
388 // Position restraint interaction parameters
389 std::vector
<t_iparams
> iparams_posres
;
390 // Flat-bottomed position restraint parameters
391 std::vector
<t_iparams
> iparams_fbposres
;
392 // The list of interactions for each type. Note that some, such as LJ and COUL will have 0 entries.
393 std::array
<InteractionList
, F_NRE
> il
;
394 /* The number of non-perturbed interactions at the start of each entry in il */
395 std::array
<int, F_NRE
> numNonperturbedInteractions
;
396 // The sorting state of interaction in il
397 int ilsort
= ilsortUNKNOWN
;
398 // The dihedral correction maps
399 gmx_cmap_t cmap_grid
;
402 /* Deprecated interation definitions, used in t_topology */
407 t_functype
* functype
;
410 t_iparams
* iparams_posres
, *iparams_fbposres
;
417 * The struct t_idef defines all the interactions for the complete
418 * simulation. The structure is setup in such a way that the multinode
419 * version of the program can use it as easy as the single node version.
420 * General field description:
422 * defines the number of elements in functype[] and param[].
424 * the node id (if parallel machines)
426 * the number of atomtypes
427 * t_functype *functype
428 * array of length ntypes, defines for every force type what type of
429 * function to use. Every "bond" with the same function but different
430 * force parameters is a different force type. The type identifier in the
431 * forceatoms[] array is an index in this array.
433 * array of length ntypes, defines the parameters for every interaction
434 * type. The type identifier in the actual interaction list
435 * (ilist[ftype].iatoms[]) is an index in this array.
436 * gmx_cmap_t cmap_grid
437 * the grid for the dihedral pair correction maps.
438 * t_iparams *iparams_posres, *iparams_fbposres
439 * defines the parameters for position restraints only.
440 * Position restraints are the only interactions that have different
441 * parameters (reference positions) for different molecules
442 * of the same type. ilist[F_POSRES].iatoms[] is an index in this array.
444 * The list of interactions for each type. Note that some,
445 * such as LJ and COUL will have 0 entries.
447 * The state of the sorting of il, values are provided above.
455 void printInteractionParameters(gmx::TextWriter
* writer
, t_functype ftype
, const t_iparams
& iparams
);
456 void pr_iparams(FILE* fp
, t_functype ftype
, const t_iparams
& iparams
);
457 void pr_ilist(FILE* fp
,
460 const t_functype
* functype
,
461 const InteractionList
& ilist
,
462 gmx_bool bShowNumbers
,
463 gmx_bool bShowParameters
,
464 const t_iparams
* iparams
);
465 void pr_idef(FILE* fp
, int indent
, const char* title
, const t_idef
* idef
, gmx_bool bShowNumbers
, gmx_bool bShowParameters
);
468 * Properly initialize idef struct.
470 * \param[in] idef Pointer to idef struct to initialize.
472 void init_idef(t_idef
* idef
);
475 * Properly clean up idef struct.
477 * \param[in] idef Pointer to idef struct to clean up.
479 void done_idef(t_idef
* idef
);