static double new_solid_old_solid (FttCell * cell, FttDirection d1,
GfsVariable * old_solid,
GfsVariable ** sold2)
{
FttDirection d;
FttCellNeighbors neighbors;
double s1, s2;
g_assert(cell);
s1 = GFS_STATE (cell)->solid->s[d1];
ftt_cell_neighbors (cell,&neighbors);
for (d = 0; d < 2*FTT_DIMENSION;d++)
if (d != 2*(d1/2) && d != 2*(d1/2)+1)
if (neighbors.c[d] &&
!cell_is_corner(neighbors.c[d]) &&
!cell_was_corner(neighbors.c[d], old_solid, sold2)) {
if ((GFS_IS_MIXED(neighbors.c[d]) && GFS_STATE(neighbors.c[d])->solid->s[d1] == 1.) ||
!GFS_IS_MIXED(neighbors.c[d])) {
if (SOLD2 (neighbors.c[d], d1) != 1.){
s2 = 1.-SOLD2 (neighbors.c[d], d1);
return s1/(s1+s2);
}
}
else if ((GFS_STATE(cell)->solid->s[d1] == 0. && GFS_IS_MIXED(neighbors.c[d])) ) {
s1 = SOLD2 (cell, d1);
s2 = 1.-GFS_STATE(neighbors.c[d])->solid->s[d1];
return s2/(s1+s2);
}
}
return -1.;
}
static void poisson_mixed_coeff_por (FttCell * cell, PoissonCoeff_por * p)
{
if (GFS_IS_MIXED (cell)) {
gdouble alpha = p->alpha ? (gfs_function_value (p->alpha, cell)*gfs_function_value (p->phi , cell)) : gfs_function_value (p->phi, cell);
if (((cell)->flags & GFS_FLAG_DIRICHLET) == 0)
/* Neumann condition (prescribed flux) */
GFS_STATE (cell)->solid->v.x += alpha;
else {
/* Dirichlet */
GfsSolidVector * s = GFS_STATE (cell)->solid;
FttVector m = {1.,1.,1.};
gfs_domain_solid_metric (p->domain, cell, &m);
FttComponent c;
for (c = 0; c < FTT_DIMENSION; c++)
(&s->v.x)[c] += alpha*(&m.x)[c]*(s->s[2*c + 1] - s->s[2*c]);
}
if (alpha <= 0. && p->positive) {
FttVector p;
ftt_cell_pos (cell, &p);
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR,
"alpha is negative (%g) at cell (%g,%g,%g).\n"
"Please check your definition.",
alpha, p.x, p.y, p.z);
}
}
}
static void poisson_coeff_por (FttCellFace * face,
PoissonCoeff_por * p)
{
gdouble alpha = p->alpha ? (gfs_function_face_value (p->alpha, face)*gfs_function_face_value (p->phi, face)) : gfs_function_face_value (p->phi, face);
gdouble v = p->lambda2[face->d/2]*alpha*gfs_domain_face_fraction (p->domain, face)/
gfs_domain_face_scale_metric (p->domain, face, face->d/2);
if (alpha <= 0. && p->positive) {
FttVector p;
ftt_face_pos (face, &p);
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR,
"alpha is negative (%g) at face (%g,%g,%g).\n"
"Please check your definition.",
alpha, p.x, p.y, p.z);
}
GFS_STATE (face->cell)->f[face->d].v += v;
switch (ftt_face_type (face)) {
case FTT_FINE_FINE:
GFS_STATE (face->neighbor)->f[FTT_OPPOSITE_DIRECTION (face->d)].v += v;
break;
case FTT_FINE_COARSE:
GFS_STATE (face->neighbor)->f[FTT_OPPOSITE_DIRECTION (face->d)].v +=
v/FTT_CELLS_DIRECTION (face->d);
break;
default:
g_assert_not_reached ();
}
}
static void face_coeff_from_below_por (FttCell * cell)
{
FttDirection d;
GfsFaceStateVector * f = GFS_STATE (cell)->f;
guint neighbors = 0;
for (d = 0; d < FTT_NEIGHBORS; d++) {
FttCellChildren child;
guint i, n;
f[d].v = 0.;
n = ftt_cell_children_direction (cell, d, &child);
for (i = 0; i < n; i++)
if (child.c[i])
f[d].v += GFS_STATE (child.c[i])->f[d].v;
f[d].v /= n;
/* fixme: this stuff may not be necessary anymore? The 'dumbell'
test case seems to work fine without this */
FttCell * neighbor;
if (f[d].v != 0. &&
(neighbor = ftt_cell_neighbor (cell, d)) && !GFS_CELL_IS_BOUNDARY (neighbor))
neighbors++;
}
if (neighbors == 1)
for (d = 0; d < FTT_NEIGHBORS; d++)
f[d].v = 0.;
}
static void reset_coeff_por (FttCell * cell, PoissonCoeff_por * p)
{
FttDirection d;
GfsFaceStateVector * f = GFS_STATE (cell)->f;
if (GFS_IS_MIXED (cell)) {
FttVector v = {0.,0.,0.};
GFS_STATE (cell)->solid->v = v;
}
for (d = 0; d < FTT_NEIGHBORS; d++)
f[d].v = 0.;
}
static void get_velfaces (FttCell * cell, FaceData * fd)
{
GfsStateVector * s = GFS_STATE (cell);
FttDirection d;
for (d = 0; d < FTT_NEIGHBORS; d++) {
GFS_VALUE (cell, fd->velfaces[d]) = s->f[d].un;
s->f[d].un = ( fd->beta + 0.5 ) * s->f[d].un - ( fd->beta - 0.5 ) * GFS_VALUE (cell, fd->velold[d]);
}
}
static void correct_face_velocity (FttCell * cell)
{
FttDirection d;
for (d = 0; d < FTT_NEIGHBORS; d++) {
FttCellFace face = gfs_cell_face(cell, d);
if (GFS_FACE_FRACTION_RIGHT (&face) != 0. && face.neighbor) {
switch (ftt_face_type (&face)) {
case FTT_FINE_FINE:
GFS_STATE (face.neighbor)->f[FTT_OPPOSITE_DIRECTION(face.d)].un = GFS_STATE (cell)->f[face.d].un;
break;
case FTT_FINE_COARSE:
GFS_STATE (cell)->f[face.d].un = GFS_STATE (face.neighbor)->f[FTT_OPPOSITE_DIRECTION(face.d)].un;
break;
default:
g_assert_not_reached ();
}
}
}
}
static void diffusion_term (FttCell * cell, DataDif * data)
{
/* fixme: I need to account for the metric */
gdouble size, sizenext, size_ratio;
gdouble un, unext, unprev;
FttDirection d0;
for (d0 = 0; d0 < FTT_NEIGHBORS; d0++) {
FttCellFace face = gfs_cell_face(cell, d0);
gdouble flux = 0.;
gdouble invdens = data->alpha ? gfs_function_face_value (data->alpha, &face) : 1.;
gdouble visc = gfs_diffusion_cell (data->d->D, cell);
GfsStateVector * s = GFS_STATE (cell);
FttDirection od = FTT_OPPOSITE_DIRECTION(d0);
un = interpolate_value_skew (cell, d0, NULL, data->fd);
if ((d0 % 2) != 0) {
unext = interpolate_value_skew (cell, od , NULL, data->fd);
unprev = interpolate_value_skew (cell, d0 , &(d0) , data->fd);
sizenext = ftt_cell_size (cell);
size = get_size_next (cell, d0);
}
else {
unext = interpolate_value_skew (cell, d0, &(d0), data->fd);
unprev = interpolate_value_skew (cell, od, NULL, data->fd);
size = ftt_cell_size (cell);
sizenext = get_size_next (cell, d0);
}
size_ratio = ( 1. + sizenext / size ) / 2;
flux = ( (unext - un)/sizenext - (un - unprev)/size );
FttComponent c = d0/2;
#if FTT_2D
FttComponent oc = FTT_ORTHOGONAL_COMPONENT (c);
flux += size_ratio * transverse_diffusion(cell, oc, d0, un, data->fd);
#else
static FttComponent orthogonal[FTT_DIMENSION][2] = {
{FTT_Y, FTT_Z}, {FTT_X, FTT_Z}, {FTT_X, FTT_Y}
};
flux += size_ratio * transverse_diffusion(cell, orthogonal[c][0], d0, un, data->fd);
flux += size_ratio * transverse_diffusion(cell, orthogonal[c][1], d0, un, data->fd);
#endif
s->f[d0].v -= invdens*visc*flux;
}
}
static void get_face_values (FttCell * cell, FaceData * fd)
{
GfsStateVector * s = GFS_STATE (cell);
FttDirection d;
for (d = 0; d < FTT_NEIGHBORS; d++) {
FttComponent c = d/2;
s->f[d].un = GFS_VALUE (cell, fd->u[c])/2.;
if (ftt_cell_neighbor (cell, d))
s->f[d].un += GFS_VALUE (ftt_cell_neighbor (cell, d), fd->u[c])/2.;
else
s->f[d].un = 0;
}
}
static void obtain_face_fluxes (const FttCell * cell)
{
FttCellChildren child;
GfsStateVector * s = GFS_STATE (cell);
FttDirection d;
for (d = 0; d < FTT_NEIGHBORS; d++) {
FttCell * neighbor = ftt_cell_neighbor (cell, d);
if (neighbor) {
if (!FTT_CELL_IS_LEAF (neighbor)) {
gint i, n = ftt_cell_children_direction (neighbor, FTT_OPPOSITE_DIRECTION(d), &child);
s->f[d].v = 0;
for (i = 0; i < n; i++)
if (child.c[i])
s->f[d].v += GFS_STATE (child.c[i])->f[FTT_OPPOSITE_DIRECTION(d)].v;
s->f[d].v /= n;
}
else if ((d % 2) > 0 && ftt_cell_level(cell) == ftt_cell_level(neighbor))
s->f[d].v = GFS_STATE (neighbor)->f[FTT_OPPOSITE_DIRECTION(d)].v;
}
else
s->f[d].v = 0;
}
}
static void update_vel (FttCell * cell, FaceData * fd)
{
GfsStateVector * s = GFS_STATE (cell);
gdouble size;
FttDirection d;
for (d = 0; d < FTT_NEIGHBORS; d++) {
size = ( ftt_cell_size (cell) + get_size_next (cell, d) ) / 2;
GFS_VALUE (cell, fd->velfaces[d]) = (GFS_VALUE (cell, fd->velfaces[d]) +
fd->beta*GFS_VALUE (cell, fd->velold[d]))/(1.+fd->beta);
s->f[d].un = (2*fd->beta*GFS_VALUE (cell, fd->velfaces[d]) +
(0.5-fd->beta)*GFS_VALUE (cell, fd->velold[d]) -
s->f[d].v*(*fd->dt)/size)/(0.5+fd->beta);
GFS_VALUE (cell, fd->velold[d]) = GFS_VALUE (cell, fd->velfaces[d]);
s->f[d].v = s->f[d].un;
}
}
static void swap_fractions_back (FttCell * cell, GfsVariable * old_solid_v)
{
if (OLD_SOLID (cell))
if (GFS_STATE(cell)->solid) {
GfsSolidVector * tmp = OLD_SOLID (cell);
OLD_SOLID (cell) = GFS_STATE(cell)->solid;
GFS_STATE(cell)->solid = tmp;
tmp = NULL;
}
else {
GFS_STATE(cell)->solid = OLD_SOLID (cell);
OLD_SOLID (cell) = NULL;
}
else
if (GFS_STATE(cell)->solid) {
OLD_SOLID (cell) = GFS_STATE(cell)->solid;
GFS_STATE(cell)->solid = NULL;
}
}
static void advection_term (FttCell * cell, FaceData * fd)
{
gdouble un, unext, unprev;
FttDirection d0;
for (d0 = 0; d0 < FTT_NEIGHBORS; d0++) {
GfsStateVector * s = GFS_STATE (cell);
FttComponent c = d0/2;
FttDirection d;
gboolean cond;
un = GFS_VALUE (cell,fd->velfaces[d0]);
if ((d0 % 2 ) != 0 ) {
cond = TRUE;
d = FTT_OPPOSITE_DIRECTION (d0);
unext = interpolate_value_skew (cell, d, NULL , fd);
unprev = interpolate_value_skew (cell, d0, &d0, fd);
}
else {
cond = FALSE;
d = d0;
unext = interpolate_value_skew (cell, d, &d, fd);
unprev = interpolate_value_skew (cell, FTT_OPPOSITE_DIRECTION(d), NULL, fd);
}
s->f[d0].v = ((un + unext)*unext - (un + unprev)*unprev) / 4.;
#if FTT_2D
s->f[d0].v += transverse_advection (cell,
FTT_ORTHOGONAL_COMPONENT (c), d, un, fd, cond);
#else /* FTT_3D */
static FttComponent orthogonal[FTT_DIMENSION][2] = {
{FTT_Y, FTT_Z}, {FTT_X, FTT_Z}, {FTT_X, FTT_Y}
};
s->f[d0].v += transverse_advection (cell, orthogonal[c][0], d, un, fd, cond);
s->f[d0].v += transverse_advection (cell, orthogonal[c][1], d, un, fd, cond);
#endif
}
}
static void swap_fractions (FttCell * cell, GfsVariable * old_solid_v) {
FttDirection c;
g_assert (cell);
if (FTT_CELL_IS_LEAF(cell)) {
if (OLD_SOLID (cell)) {
GfsSolidVector * solid_old = OLD_SOLID (cell);
if (GFS_STATE (cell)->solid) {
GfsSolidVector * solid = GFS_STATE (cell)->solid;
OLD_SOLID (cell)->merged = GFS_STATE (cell)->solid->merged;
for (c = 0; c < 2*FTT_DIMENSION; c++)
if (solid->s[c] == 0.)
solid_old->s[c] = 0;
else
solid_old->s[c] = (solid_old->s[c]+solid->s[c])/2. ;
}
else {
OLD_SOLID (cell)->merged = NULL;
for (c = 0; c < 2*FTT_DIMENSION; c++)
solid_old->s[c] = (solid_old->s[c]+1.)/2. ;
}
}
else if (GFS_STATE (cell)->solid) {
GfsSolidVector * solid = GFS_STATE (cell)->solid;
GfsSolidVector * solid_old = OLD_SOLID (cell) = g_malloc0 (sizeof (GfsSolidVector));
OLD_SOLID (cell)->a= 1.;
OLD_SOLID (cell)->merged = GFS_STATE (cell)->solid->merged;
for (c = 0; c < 2*FTT_DIMENSION; c++)
solid_old->s[c] = 1.;
for (c = 0; c < 2*FTT_DIMENSION; c++)
if (solid->s[c] == 0.)
solid_old->s[c] = 0;
else
solid_old->s[c] = (solid_old->s[c]+solid->s[c])/2. ;
}
}
if (OLD_SOLID (cell)) {
if (GFS_STATE(cell)->solid) {
GfsSolidVector * tmp = OLD_SOLID (cell);
OLD_SOLID (cell)->merged = GFS_STATE (cell)->solid->merged;
OLD_SOLID (cell) = GFS_STATE(cell)->solid;
GFS_STATE(cell)->solid = tmp;
tmp = NULL;
}
else {
OLD_SOLID (cell)->merged = NULL;
GFS_STATE(cell)->solid = OLD_SOLID (cell);
OLD_SOLID (cell) = NULL;
}
}
else if (GFS_STATE(cell)->solid) {
OLD_SOLID (cell) = GFS_STATE(cell)->solid;
GFS_STATE(cell)->solid = NULL;
}
/* Check for negative fractions and fix */
if (GFS_STATE(cell)->solid)
for (c = 0; c < 2*FTT_DIMENSION; c++)
if (GFS_STATE(cell)->solid->s[c] < 0.) {
if (OLD_SOLID (cell))
if (OLD_SOLID (cell)->s[c] >= 0.)
GFS_STATE(cell)->solid->s[c] = OLD_SOLID (cell)->s[c];
else
GFS_STATE(cell)->solid->s[c] = 1.;
else
GFS_STATE(cell)->solid->s[c] = 0.;
}
if (OLD_SOLID (cell))
for (c = 0; c < 2*FTT_DIMENSION; c++)
if (OLD_SOLID (cell)->s[c] < 0.){
if (GFS_STATE(cell)->solid)
if (GFS_STATE(cell)->solid->s[c] >= 0.)
OLD_SOLID (cell)->s[c] = GFS_STATE(cell)->solid->s[c];
else
OLD_SOLID (cell)->s[c] = 1.;
else
OLD_SOLID (cell)->s[c] = 0.;
}
}
static int cell_is_corner (FttCell * cell)
{
FttDirection d, d1, d2;
gdouble norm;
FttCellNeighbors neighbors;
FttVector n1, n2;
g_assert (cell);
ftt_cell_neighbors (cell,&neighbors);
d1 = d2 = -1;
if (!GFS_IS_MIXED(cell))
return 0;
for (d = 0; d < FTT_NEIGHBORS; d ++)
if (GFS_STATE(cell)->solid->s[d] != 1. && GFS_STATE(cell)->solid->s[d] != 0. && d1 == -1 && d2 == -1)
d1 = d;
else if (GFS_STATE(cell)->solid->s[d] != 1. && GFS_STATE(cell)->solid->s[d] != 0 && d2 == -1)
d2 = d;
else if (GFS_STATE(cell)->solid->s[d] != 1. && GFS_STATE(cell)->solid->s[d] != 0.)
g_assert_not_reached ();
if ( d1 == -1 || d2 == -1) {
FttVector pos;
ftt_cell_pos (cell,&pos);
g_warning ("REA: %f, %f \n", pos.x, pos.y);
g_warning ("d1: %i d2: %i \n", d1,d2);
g_assert_not_reached ();
}
gfs_solid_normal (neighbors.c[d1], &n1);
norm = sqrt (n1.x*n1.x + n1.y*n1.y);
if (norm != 0.) {
n1.x /= norm;
n1.y /= norm;
}
gfs_solid_normal (neighbors.c[d2], &n2);
norm = sqrt (n2.x*n2.x + n2.y*n2.y);
if (norm != 0.) {
n2.x /= norm;
n2.y /= norm;
}
if (d1/2 == d2/2)
return 0;
else {
if (neighbors.c[d2])
if ( neighbors.c[d1])
if (GFS_IS_MIXED (neighbors.c[d2]) && GFS_IS_MIXED (neighbors.c[d1]))
if (fabs(n1.x*n2.x+n1.y*n2.y) < 0.70) {
if (GFS_STATE(neighbors.c[d1])->solid->s[d1] > 0 && GFS_STATE(neighbors.c[d1])->solid->s[d1] < 1)
return 1;
if (GFS_STATE(neighbors.c[d2])->solid->s[d2] > 0 && GFS_STATE(neighbors.c[d2])->solid->s[d2] < 1)
return 1;
}
return 0;
}
}
static void second_order_face_fractions (FttCell * cell, GfsSimulationMoving * sim)
{
#ifndef FTT_2D /* 3D */
g_assert_not_implemented ();
#endif
GfsVariable * old_solid_v = sim->old_solid;
GfsVariable ** sold2 = sim->sold2;
gdouble dt1, dt2, dto1, dto2, s1, s2;
gint d1, d2, d, do1, do2;
FttCellNeighbors neighbors;
dt1 = dt2 = dto1 = dto2 = -2;
d1 = d2 = do1 = do2 = -1;
s1 = s2 = -1;
g_assert(cell);
ftt_cell_neighbors (cell,&neighbors);
if (!OLD_SOLID (cell) && !GFS_IS_MIXED(cell))
return;
if (!OLD_SOLID (cell)) {
FttDirection c;
OLD_SOLID (cell) = g_malloc0 (sizeof (GfsSolidVector));
OLD_SOLID (cell)->a = 1.;
for (c = 0; c < FTT_NEIGHBORS; c++)
OLD_SOLID (cell)->s[c] = 1.;
}
/* Find directions of intersection */
if (GFS_IS_MIXED(cell))
for (d = 0; d < FTT_NEIGHBORS; d ++) {
if (GFS_STATE(cell)->solid->s[d] != 1. && GFS_STATE(cell)->solid->s[d] != 0. &&
d1 == -1 && d2 == -1)
d1 = d;
else if (GFS_STATE(cell)->solid->s[d] != 1. && GFS_STATE(cell)->solid->s[d] != 0 && d2 == -1)
d2 = d;
else if (GFS_STATE(cell)->solid->s[d] != 1. && GFS_STATE(cell)->solid->s[d] != 0.)
g_assert_not_reached ();
}
for (d = 0; d < FTT_NEIGHBORS; d ++) {
if (SOLD2 (cell, d) != 1. && SOLD2 (cell, d) != 0. && do1 == -1 && do2 == -1)
do1 = d;
else if (SOLD2 (cell, d) != 1. && SOLD2 (cell, d) != 0 && do2 == -1)
do2 = d;
else if (SOLD2 (cell, d) != 1. && SOLD2 (cell, d) != 0.)
g_assert_not_reached ();
}
/* Treats easy cases */
if (d1 != -1 && d1 == do1)
OLD_SOLID (cell)->s[d1] = SOLD2 (cell, d1);
if (d2 != -1 && d2 == do2)
OLD_SOLID (cell)->s[d2] = SOLD2 (cell, d2);
if (d1 == do1 && d2 == do2)
return;
/* Finds timescale for d1/do1 */
if (d1 != -1) {
if (SOLD2 (cell, d1) == 1.) {
dt1 = new_solid_old_fluid (cell, d1, old_solid_v, sold2);
if (dt1 == -1)
if (neighbors.c[d1]){
FttDirection dop = ftt_opposite_direction[d1];
dt1 = new_solid_old_fluid (neighbors.c[d1], dop, old_solid_v, sold2);
}
}
else if (SOLD2 (cell, d1) == 0.){
dt1 = new_solid_old_solid (cell, d1, old_solid_v, sold2);
}
}
if (do1 != -1 && do1 != d1 && do1 != d2) {
if (GFS_IS_MIXED(cell) && GFS_STATE(cell)->solid->s[do1] == 0.)
dto1 = new_solid_old_solid (cell, do1, old_solid_v, sold2);
else
dto1 = new_fluid_old_solid (cell, do1, old_solid_v, sold2);
}
/* Finds timescale for d2/do2 */
if (d2 != -1) {
if (SOLD2 (cell, d2) == 1.) {
dt2 = new_solid_old_fluid (cell, d2, old_solid_v, sold2);
if (dt2 == -1 && neighbors.c[d2]) {
FttDirection dop = ftt_opposite_direction[d2];
dt2 = new_solid_old_fluid (neighbors.c[d2], dop, old_solid_v, sold2);
}
}
else if (SOLD2 (cell, d2) == 0.)
dt2 = new_solid_old_solid (cell, d2, old_solid_v, sold2);
}
if (do2 != -1 && do2 != d1 && do2 != d2) {
if (GFS_IS_MIXED(cell) && GFS_STATE(cell)->solid->s[do2] == 0.)
dto2 = new_solid_old_solid (cell, do2, old_solid_v, sold2);
else
dto2 = new_fluid_old_solid (cell, do2, old_solid_v, sold2);
}
/* Uses time-scale from other faces if one is missing */
if (dt1 == -1) {
if (dto1 != -2)
dt1 = dto1;
else if (dt2 != -2)
dt1 = dt2;
else if (dto2 != -2)
dt1 = dto2;
}
if (dt2 == -1) {
if (dt1 != -2)
dt2 = dt1;
else if (dto2 != -2)
dt2 = dto2;
else if (dto1 != -2)
dt2 = dto1;
}
if (dto1 == -1) {
if (dt1 != -2)
dto1 = dt1;
else if (dt2 != -2)
dto1 = dt2;
else if (dto2 != -2)
dto1 = dto2;
}
if (dto2 == -1) {
if (dt1 != -2)
dto2 = dt1;
else if (dt2 != -2)
dto2 = dt2;
else if (dto1 != -2)
dto2 = dto1;
}
/* Treats cell is corner */
if (dt1 != -2 && dt2 != -2) {
if (dt1 != dt2 && d1/2 != d2/2) {
if (cell_is_corner (cell)) {
if (dt1 < dt2)
dt2 = dt1;
else
dt1 = dt2;
}}}
/* Treats cell was corner */
if (dto1 != -2 && dto2 != -2 &&
dto1 != dto2 && do1/2 != do2/2 &&
cell_was_corner (cell, old_solid_v, sold2)) {
if (dto1 < dto2)
dto2 = dto1;
else
dto1 = dto2;
}
/* Compute the t^n+1/2 contribution of the face */
if (do1 > -1)
if (do1 != d1 && do1 != d2) {
OLD_SOLID (cell)->s[do1]=SOLD2 (cell, do1)*(1-dto1)+dto1;
if (neighbors.c[do1])
if (!OLD_SOLID (neighbors.c[do1]) || !GFS_IS_MIXED(neighbors.c[do1])) {
if (!OLD_SOLID (neighbors.c[do1])) {
FttDirection c;
OLD_SOLID (neighbors.c[do1]) = g_malloc0 (sizeof (GfsSolidVector));
OLD_SOLID (neighbors.c[do1])->a = 1.;
for (c = 0; c < FTT_NEIGHBORS; c++)
OLD_SOLID (neighbors.c[do1])->s[c] = 1.;
}
OLD_SOLID (neighbors.c[do1])->s[ftt_opposite_direction[do1]] =
SOLD2 (cell, do1)*(1-dto1)+dto1;
}
}
if (do2 > -1)
if (do2 != d1 && do2 != d2) {
OLD_SOLID (cell)->s[do2]=SOLD2 (cell, do2)*(1-dto2)+dto2;
if (neighbors.c[do2])
if (!OLD_SOLID (neighbors.c[do2]) || !GFS_IS_MIXED(neighbors.c[do2])) {
if (!OLD_SOLID (neighbors.c[do2])) {
FttDirection c;
OLD_SOLID (neighbors.c[do2]) = g_malloc0 (sizeof (GfsSolidVector));
OLD_SOLID (neighbors.c[do2])->a = 1.;
for (c = 0; c < FTT_NEIGHBORS; c++)
OLD_SOLID (neighbors.c[do2])->s[c] = 1.;
}
OLD_SOLID (neighbors.c[do2])->s[ftt_opposite_direction[do2]] =
SOLD2 (cell, do2)*(1-dto2)+dto2;
}
}
if (d1 > -1) {
if (SOLD2 (cell, d1) == 0.)
OLD_SOLID (cell)->s[d1] = GFS_STATE(cell)->solid->s[d1]*(dt1-1.);
else if (SOLD2 (cell, d1) == 1.)
OLD_SOLID (cell)->s[d1] = (dt1-1.)*GFS_STATE(cell)->solid->s[d1]+2.-dt1;
}
if (d2 > -1) {
if (SOLD2 (cell, d2) == 0.)
OLD_SOLID (cell)->s[d2] = GFS_STATE(cell)->solid->s[d2]*(dt2-1.);
else if (SOLD2 (cell, d2) == 1.)
OLD_SOLID (cell)->s[d2] = (dt2-1.)*GFS_STATE(cell)->solid->s[d2]+2.-dt2;
}
if (d1/2 == d2/2 && do1 == -1 && do2 == -1) /* third face has to be treated for
the timescale determined on the other faces */
for (d = 0; d < FTT_NEIGHBORS; d ++)
if (d/2 != d1/2 && SOLD2 (cell, d) == 0.)
OLD_SOLID (cell)->s[d] = -1.+dt1+dt2;
if (do1/2 == do2/2 && d1 == -1 && d2 == -1)
for (d = 0; d < FTT_NEIGHBORS; d++)
if (d/2 != do1/2 && SOLD2 (cell, d) == 0.)
OLD_SOLID (cell)->s[d] = -1.+dto1+dto2;
}