/*************************************************************************
add_trigger_output:
In: counter of thing that just happened (trigger of some sort)
request structure saying who wanted to know that it happened
number of times that thing happened
Out: The event is added to the buffer of the requester, and the
buffer is written and flushed if the buffer is full.
Note: Hits are assumed to happen with only one molecule; positive
means the front face was hit, negative means the back was hit.
This is reported as orientation instead.
*************************************************************************/
void add_trigger_output(struct volume *world, struct counter *c,
struct output_request *ear, int n, short flags,
u_long id) {
struct output_column *first_column;
first_column = ear->requester->column->set->column_head;
int idx = (int)first_column->initial_value;
struct output_trigger_data *otd;
otd = first_column->buffer[idx].val.tval;
if (first_column->set->block->timer_type == OUTPUT_BY_ITERATION_LIST)
otd->t_iteration = world->current_iterations;
else
otd->t_iteration = world->current_iterations * world->time_unit;
otd->event_time = c->data.trig.t_event * world->time_unit;
otd->loc.x = c->data.trig.loc.x * world->length_unit;
otd->loc.y = c->data.trig.loc.y * world->length_unit;
otd->loc.z = c->data.trig.loc.z * world->length_unit;
if (flags & TRIG_IS_HIT) {
otd->how_many = 1;
if (n > 0)
otd->orient = 1;
else
otd->orient = -1;
} else {
otd->how_many = n;
otd->orient = c->data.trig.orient;
}
otd->flags = flags;
otd->name = ear->requester->column->expr->title;
otd->id = id;
first_column->initial_value += 1.0;
idx = (int)first_column->initial_value;
if (idx >= (int)first_column->set->block->trig_bufsize) {
if (write_reaction_output(world, first_column->set))
mcell_error("Failed to write triggered count output to file '%s'.",
first_column->set->outfile_name);
first_column->initial_value = 0;
}
}
/*************************************************************************
*
* function for computing the probability factor (pb_factor) used to
* convert reaction rate constants into probabilities
*
* in: mcell state
* rx to compute pb_factor for
* maximum number of expected surface products for this reaction
*
* out: pb_factor
*
************************************************************************/
double compute_pb_factor(double time_unit,
double length_unit,
double grid_density,
double rx_radius_3d,
struct reaction_flags *rxn_flags,
int *create_shared_walls_info_flag,
struct rxn *rx,
int max_num_surf_products) {
/* determine the number of volume and surface reactants as well
* as the number of surfaces */
int num_vol_reactants = 0;
int num_surf_reactants = 0;
int num_surfaces = 0;
for (unsigned int n_reactant = 0; n_reactant < rx->n_reactants;
n_reactant++) {
if ((rx->players[n_reactant]->flags & ON_GRID) != 0) {
num_surf_reactants++;
} else if ((rx->players[n_reactant]->flags & NOT_FREE) == 0) {
num_vol_reactants++;
} else if (rx->players[n_reactant]->flags & IS_SURFACE) {
num_surfaces++;
}
}
/* probability for this reaction */
double pb_factor = 0.0;
/* determine reaction probability by proper conversion of the reaction
* rate constant */
if (rx->n_reactants == 1) {
pb_factor = time_unit;
if (max_num_surf_products > 0)
*create_shared_walls_info_flag = 1;
} /* end if (rx->reactants == 1) */
else if (((rx->n_reactants == 2) &&
(num_surf_reactants >= 1 || num_surfaces == 1)) ||
((rx->n_reactants == 3) && (num_surfaces == 1))) {
if ((num_surf_reactants == 2) && (num_vol_reactants == 0) &&
(num_surfaces < 2)) {
/* this is a reaction between two surface molecules */
/* with an optional SURFACE */
rxn_flags->surf_surf_reaction_flag = 1;
*create_shared_walls_info_flag = 1;
if (rx->players[0]->flags & rx->players[1]->flags & CANT_INITIATE)
mcell_error("Reaction between %s and %s listed, but both are marked "
"TARGET_ONLY.",
rx->players[0]->sym->name, rx->players[1]->sym->name);
else if ((rx->players[0]->flags | rx->players[1]->flags) &
CANT_INITIATE) {
pb_factor =
time_unit * grid_density / 3; /* 3 neighbors */
} else {
pb_factor = time_unit * grid_density /
6; /* 2 molecules, 3 neighbors each */
}
} else if ((((rx->players[0]->flags & IS_SURFACE) != 0 &&
(rx->players[1]->flags & ON_GRID) != 0) ||
((rx->players[1]->flags & IS_SURFACE) != 0 &&
(rx->players[0]->flags & ON_GRID) != 0)) &&
(rx->n_reactants == 2)) {
/* This is actually a unimolecular reaction in disguise! */
pb_factor = time_unit;
if (max_num_surf_products > 0)
*create_shared_walls_info_flag = 1;
} else if (((rx->n_reactants == 2) && (num_vol_reactants == 1) &&
(num_surfaces == 1)) ||
((rx->n_reactants == 2) && (num_vol_reactants == 1) &&
(num_surf_reactants == 1)) ||
((rx->n_reactants == 3) && (num_vol_reactants == 1) &&
(num_surf_reactants == 1) && (num_surfaces == 1))) {
/* this is a reaction between "vol_mol" and "surf_mol" */
/* with an optional SURFACE */
/* or reaction between "vol_mol" and SURFACE */
if (max_num_surf_products > 0)
*create_shared_walls_info_flag = 1;
if (((rx->n_reactants == 2) && (num_vol_reactants == 1) &&
(num_surfaces == 1))) {
/* do not take into acccount SPECIAL reactions */
if (rx->n_pathways > RX_SPECIAL) {
rxn_flags->vol_wall_reaction_flag = 1;
}
} else {
rxn_flags->vol_surf_reaction_flag = 1;
}
double D_tot = 0.0;
double t_step = 0.0;
if ((rx->players[0]->flags & NOT_FREE) == 0) {
D_tot = rx->players[0]->D;
t_step = rx->players[0]->time_step * time_unit;
} else if ((rx->players[1]->flags & NOT_FREE) == 0) {
D_tot = rx->players[1]->D;
t_step = rx->players[1]->time_step * time_unit;
} else {
/* Should never happen. */
D_tot = 1.0;
t_step = 1.0;
}
if (D_tot <= 0.0)
pb_factor = 0; /* Reaction can't happen! */
else
pb_factor = 1.0e11 * grid_density / (2.0 * N_AV) *
sqrt(MY_PI * t_step / D_tot);
if ((rx->geometries[0] + rx->geometries[1]) *
(rx->geometries[0] - rx->geometries[1]) ==
0 &&
rx->geometries[0] * rx->geometries[1] != 0) {
pb_factor *= 2.0;
}
} /* end else */
} else if ((rx->n_reactants == 2) && (num_vol_reactants == 2)) {
/* This is the reaction between two "vol_mols" */
rxn_flags->vol_vol_reaction_flag = 1;
double eff_vel_a = rx->players[0]->space_step / rx->players[0]->time_step;
double eff_vel_b = rx->players[1]->space_step / rx->players[1]->time_step;
double eff_vel;
if (rx->is_complex) {
if (rx->is_complex[0])
eff_vel_a = 0;
if (rx->is_complex[1])
eff_vel_b = 0;
}
if (rx->players[0]->flags & rx->players[1]->flags & CANT_INITIATE)
mcell_error(
"Reaction between %s and %s listed, but both are marked TARGET_ONLY.",
rx->players[0]->sym->name, rx->players[1]->sym->name);
else if (rx->players[0]->flags & CANT_INITIATE)
eff_vel_a = 0;
else if (rx->players[1]->flags & CANT_INITIATE)
eff_vel_b = 0;
if (eff_vel_a + eff_vel_b > 0) {
eff_vel = (eff_vel_a + eff_vel_b) * length_unit /
time_unit; /* Units=um/sec */
pb_factor = 1.0 / (2.0 * sqrt(MY_PI) * rx_radius_3d *
rx_radius_3d * eff_vel);
pb_factor *= 1.0e15 / N_AV; /* Convert L/mol.s to um^3/number.s */
} else
pb_factor = 0.0; /* No rxn possible */
} else if ((rx->n_reactants == 3) && (num_vol_reactants == 3)) {
/* This is the reaction between three "vol_mols" */
rxn_flags->vol_vol_vol_reaction_flag = 1;
double eff_dif_a, eff_dif_b, eff_dif_c,
eff_dif; /* effective diffusion constants*/
eff_dif_a = rx->players[0]->D;
eff_dif_b = rx->players[1]->D;
eff_dif_c = rx->players[2]->D;
if (rx->players[0]->flags & rx->players[1]->flags & rx->players[2]->flags &
CANT_INITIATE)
mcell_error("Reaction between %s and %s and %s listed, but all marked "
"TARGET_ONLY.",
rx->players[0]->sym->name, rx->players[1]->sym->name,
rx->players[2]->sym->name);
if (rx->players[0]->flags & CANT_INITIATE)
eff_dif_a = 0;
if (rx->players[1]->flags & CANT_INITIATE)
eff_dif_b = 0;
if (rx->players[2]->flags & CANT_INITIATE)
eff_dif_c = 0;
if (eff_dif_a + eff_dif_b + eff_dif_c > 0) {
eff_dif = (eff_dif_a + eff_dif_b + eff_dif_c) *
1.0e8; /* convert from cm^2/sec to um^2/sec */
pb_factor =
1.0 / (6.0 * (MY_PI) * rx_radius_3d * rx_radius_3d *
(MY_PI) * rx_radius_3d * rx_radius_3d * eff_dif);
pb_factor *=
1.0e30 / (N_AV * N_AV); /* Convert (L/mol)^2/s to (um^3/number)^2/s */
} else
pb_factor = 0.0; /* No rxn possible */
} else if ((rx->n_reactants == 3) && (num_vol_reactants == 2) &&
(num_surf_reactants == 1)) {
/* This is a reaction between 2 volume_molecules and */
/* one surface_molecule */
rxn_flags->vol_vol_surf_reaction_flag = 1;
if (max_num_surf_products > 0)
*create_shared_walls_info_flag = 1;
/* find out what reactants are volume_molecules */
/* and what is surface_molecule */
struct species *vol_reactant1 = NULL, *vol_reactant2 = NULL;
struct species *surf_reactant = NULL;
/* geometries of the reactants */
int vol_react1_geom = 0, vol_react2_geom = 0, surf_react_geom = 0;
if ((rx->players[0]->flags & NOT_FREE) == 0) {
vol_reactant1 = rx->players[0];
vol_react1_geom = rx->geometries[0];
if ((rx->players[1]->flags & NOT_FREE) == 0) {
vol_reactant2 = rx->players[1];
vol_react2_geom = rx->geometries[1];
surf_reactant = rx->players[2];
surf_react_geom = rx->geometries[2];
} else if ((rx->players[2]->flags & NOT_FREE) == 0) {
vol_reactant2 = rx->players[2];
vol_react2_geom = rx->geometries[2];
surf_reactant = rx->players[1];
surf_react_geom = rx->geometries[1];
}
} else if ((rx->players[1]->flags & NOT_FREE) == 0) {
vol_reactant1 = rx->players[1];
vol_react1_geom = rx->geometries[1];
if ((rx->players[0]->flags & NOT_FREE) == 0) {
vol_reactant2 = rx->players[0];
vol_react2_geom = rx->geometries[0];
surf_reactant = rx->players[2];
surf_react_geom = rx->geometries[2];
} else if ((rx->players[2]->flags & NOT_FREE) == 0) {
vol_reactant2 = rx->players[2];
vol_react2_geom = rx->geometries[2];
surf_reactant = rx->players[0];
surf_react_geom = rx->geometries[0];
}
}
/* volume reactants should be aligned - it means that
they should be in the same orientation class and have
the same sign */
if (vol_react1_geom != vol_react2_geom)
mcell_error("In 3-way reaction %s + %s + %s ---> [...] volume reactants "
"%s and %s are either in different orientation classes or "
"have opposite orientation sign.",
rx->players[0]->sym->name, rx->players[1]->sym->name,
rx->players[2]->sym->name, vol_reactant1->sym->name,
vol_reactant2->sym->name);
double eff_dif_1, eff_dif_2, eff_dif; /* effective diffusion constants*/
eff_dif_1 = vol_reactant1->D;
eff_dif_2 = vol_reactant2->D;
if (vol_reactant1->flags & vol_reactant2->flags & surf_reactant->flags &
CANT_INITIATE) {
mcell_error("Reaction between %s and %s and %s listed, but all marked "
"TARGET_ONLY.",
vol_reactant1->sym->name, vol_reactant2->sym->name,
surf_reactant->sym->name);
} else if (vol_reactant1->flags & vol_reactant2->flags & CANT_INITIATE) {
mcell_error("Reaction between %s and %s and %s listed, but both volume "
"molecules %s and %s marked TARGET_ONLY.",
vol_reactant1->sym->name, vol_reactant2->sym->name,
surf_reactant->sym->name, vol_reactant1->sym->name,
vol_reactant2->sym->name);
} else {
if (vol_reactant1->flags & CANT_INITIATE)
eff_dif_1 = 0;
if (vol_reactant2->flags & CANT_INITIATE)
eff_dif_2 = 0;
}
if ((eff_dif_1 + eff_dif_2) > 0) {
eff_dif = (eff_dif_1 + eff_dif_2) *
1.0e8; /* convert from cm^2/sec to um^2/sec */
pb_factor =
2.0 * grid_density /
(3.0 * (MY_PI) * rx_radius_3d * rx_radius_3d * eff_dif);
pb_factor *=
1.0e30 / (N_AV * N_AV); /* Convert (L/mol)^2/s to (um^3/number)^2/s */
} else
pb_factor = 0.0; /* No rxn possible */
/* The value of pb_factor above is calculated for the case
when surface_molecule can be hit from either side Otherwise the
reaction_rate should be doubled. So we check whether both of the
volume_molecules are in the same orientation class as
surface_molecule.
*/
/* flags that show whether volume reactants are in the same
orientation classes as surface reactant */
int vol_react1_and_surf_react = 0, vol_react2_and_surf_react = 0;
if ((vol_react1_geom + surf_react_geom) *
(vol_react1_geom - surf_react_geom) ==
0 &&
vol_react1_geom * surf_react_geom != 0) {
vol_react1_and_surf_react = 1;
}
if ((vol_react2_geom + surf_react_geom) *
(vol_react2_geom - surf_react_geom) ==
0 &&
vol_react2_geom * surf_react_geom != 0) {
vol_react2_and_surf_react = 1;
}
if (vol_react1_and_surf_react && vol_react2_and_surf_react) {
pb_factor *= 2.0;
}
} else if ((rx->n_reactants == 3) && (num_vol_reactants == 1) &&
(num_surf_reactants == 2)) {
/* one volume reactant and two surface reactants */
rxn_flags->vol_surf_surf_reaction_flag = 1;
*create_shared_walls_info_flag = 1;
/* find out what reactants are volume_molecules
and what reactant is a surface_molecule */
struct species *surf_reactant1 = NULL, *surf_reactant2 = NULL;
struct species *vol_reactant = NULL;
/* geometries of the reactants */
int vol_react_geom = 0, surf_react1_geom = 0, surf_react2_geom = 0;
if ((rx->players[0]->flags & NOT_FREE) == 0) {
vol_reactant = rx->players[0];
vol_react_geom = rx->geometries[0];
surf_reactant1 = rx->players[1];
surf_react1_geom = rx->geometries[1];
surf_reactant2 = rx->players[2];
surf_react2_geom = rx->geometries[2];
} else if ((rx->players[1]->flags & NOT_FREE) == 0) {
vol_reactant = rx->players[1];
vol_react_geom = rx->geometries[1];
surf_reactant1 = rx->players[0];
surf_react1_geom = rx->geometries[0];
surf_reactant2 = rx->players[2];
surf_react2_geom = rx->geometries[2];
} else if ((rx->players[2]->flags & NOT_FREE) == 0) {
vol_reactant = rx->players[2];
vol_react_geom = rx->geometries[2];
surf_reactant1 = rx->players[0];
surf_react1_geom = rx->geometries[0];
surf_reactant2 = rx->players[1];
surf_react2_geom = rx->geometries[1];
}
if (vol_reactant->flags & CANT_INITIATE)
mcell_error("3-way reaction between %s and %s and %s listed, but the "
"only volume reactant %s is marked TARGET_ONLY",
vol_reactant->sym->name, surf_reactant1->sym->name,
surf_reactant2->sym->name, vol_reactant->sym->name);
double eff_vel = vol_reactant->space_step / vol_reactant->time_step;
if (eff_vel > 0) {
eff_vel =
eff_vel * length_unit / time_unit; /* Units=um/sec */
pb_factor = (sqrt(MY_PI) * grid_density * grid_density) /
(6.0 * eff_vel);
/* NOTE: the reaction rate should be in units of
volume * area * #^(-2) * s^(-1) that means
(um)^5 * #^(-2) * s^(-1),
otherwise if the reaction rate is in
(um^2/(M*#*s) units conversion is necessary
*/
} else
pb_factor = 0.0; /* No rxn possible */
/* The value of pb_factor above is calculated for the case
when surface_molecule can be hit from either side
Otherwise the reaction_rate should be doubled.
So we check whether the volume_molecule
is in the same orientation class as surface_molecules.
*/
/* flags that show whether volume reactant is in the same
orientation class as surface reactants */
int vol_react_and_surf_react1 = 0, vol_react_and_surf_react2 = 0;
if ((vol_react_geom + surf_react1_geom) *
(vol_react_geom - surf_react1_geom) ==
0 &&
vol_react_geom * surf_react1_geom != 0) {
vol_react_and_surf_react1 = 1;
}
if ((vol_react_geom + surf_react2_geom) *
(vol_react_geom - surf_react2_geom) ==
0 &&
vol_react_geom * surf_react2_geom != 0) {
vol_react_and_surf_react2 = 1;
}
if (vol_react_and_surf_react1 && vol_react_and_surf_react2) {
pb_factor *= 2.0;
}
} else if ((rx->n_reactants == 3) && (num_surf_reactants == 3)) {
rxn_flags->surf_surf_surf_reaction_flag = 1;
*create_shared_walls_info_flag = 1;
int num_active_reactants = 0;
for (int i = 0; i < 3; i++) {
if (rx->players[i]->flags & CANT_INITIATE)
continue;
else
num_active_reactants++;
}
/* Calculation of pb_factor below should
account for possible number of outcomes with TARGET_ONLY
specification. E.g. when mols A,B,C are all active there are 6
possible combinations = number of permutations out of 3. When e.g. C
mol is TARGET_ONLY there are only 4 combinations (ABC,ACB,BCA,BAC).
When both B and C mols are TARGET_ONLY there are two possible
combinations - (ABC, ACB). */
if (num_active_reactants == 0) {
mcell_error("Reaction between %s and %s and %s listed, but all marked "
"TARGET_ONLY.",
rx->players[0]->sym->name, rx->players[1]->sym->name,
rx->players[2]->sym->name);
} else if (num_active_reactants == 3) {
/* basic case */
pb_factor =
(grid_density * grid_density * time_unit) / 6.0;
} else if (num_active_reactants == 2) {
pb_factor =
(grid_density * grid_density * time_unit) / 4.0;
} else if (num_active_reactants == 1) {
pb_factor =
(grid_density * grid_density * time_unit) / 2.0;
}
/* NOTE: the reaction rate should be in units of
(um)^4 * #^(-2) * s^(-1),
otherwise the units conversion is necessary
*/
}
return pb_factor;
}
