LOCAL void set_oned_state_from_interface(
float *coords,
Locstate s,
COMP_TYPE *ct,
ONED_OVERLAY *olay)
{
HYPER_SURF *hs;
HYPER_SURF_ELEMENT *hse;
POINT *p;
float coords_on[MAXD];
if (nearest_interface_point(coords,ct->comp,olay->intfc1d,
INCLUDE_BOUNDARIES,NULL,
coords_on,NULL,&hse,&hs) != YES)
{
screen("ERROR in set_oned_state_from_interface(), "
"nearest_interface_point() failed\n");
clean_up(ERROR);
}
coords[0] = coords_on[0];
p = Point_of_hs(hs);
if (ct->comp == positive_component(hs))
ft_assign(s,right_state(p),ct->params->sizest);
else if (ct->comp == negative_component(hs))
ft_assign(s,left_state(p),ct->params->sizest);
else
{
screen("ERROR in set_oned_state_from_interface(), "
"ct->comp not on interface\n");
clean_up(ERROR);
}
Init_params(s,ct->params);
} /*end set_oned_state_from_interface*/
EXPORT bool FrontStateAtGridCrossing(
Front *front,
int *icoords,
GRID_DIRECTION dir,
COMPONENT comp,
float (*state_func)(Locstate),
float *ans,
float *crx_coords)
{
Locstate state;
HYPER_SURF *hs;
INTERFACE *grid_intfc = front->grid_intfc;
static CRXING *crxs[MAX_NUM_CRX];
int i,nc,dim = grid_intfc->dim;
nc = GridSegCrossing(crxs,icoords,dir,grid_intfc);
if (nc == 0) return NO;
hs = crxs[0]->hs;
if (comp == negative_component(hs))
{
state = left_state(crxs[0]->pt);
for (i = 0; i < dim; ++i)
crx_coords[i] = Coords(crxs[0]->pt)[i];
}
else if (comp == positive_component(hs))
{
state = right_state(crxs[0]->pt);
for (i = 0; i < dim; ++i)
crx_coords[i] = Coords(crxs[0]->pt)[i];
}
else
{
screen("ERROR: In FrontStateAtGridCrossing(),"
"component does not match\n");
return NO;
}
*ans = (*state_func)(state);
return YES;
} /* end FrontStateAtGridCrossing */
/* ARGSUSED */
EXPORT void f_tan_curve_propagate(
Front *fr,
Front *newfr,
INTERFACE *tempintfc,
CURVE *tempc,
CURVE *newc,
double dt)
{
BOND *tempb, *newb;
Locstate ansl, ansr;
boolean curveIsClosed;
double *h = fr->rect_grid->h;
double tngt[MAXD], ds, sbl;
int i, dim = fr->rect_grid->dim;
static int nrad = 0;
static Tan_stencil *sten = NULL;
debug_print("f_tan_prop","Entered f_tan_curve_propagate()\n");
if (debugging("f_tan_prop"))
{
(void) printf("tempc %llu newc %llu\n",(long long unsigned int)curve_number(tempc),
(long long unsigned int)curve_number(newc));
(void) printf("tempc\n"); print_curve(tempc);
(void) printf("\nnewc\n"); print_curve(newc);
}
if (sten == NULL)
{
nrad = fr->npts_tan_sten/2;
sten = alloc_tan_stencil(fr,nrad);
}
switch (wave_type(tempc))
{
case PASSIVE_BOUNDARY:
case SUBDOMAIN_BOUNDARY:
return;
default:
break;
}
curveIsClosed = (is_closed_node(newc->end)) ? YES : NO;
tempb = tempc->first; newb = newc->first;
/* Check if zero length curve */
if (tempc->first == tempc->last)
{
sbl = scaled_bond_length(tempc->first,h,dim);
if (sbl < MIN_SC_SEP(tempintfc))
{
debug_print("f_tan_prop","Left f_tan_curve_propagate()\n");
return;
}
}
for (; newb; tempb = tempb->next, newb = newb->next)
{
if (t_pt_propagated(newb->end))
continue;
/* stop at tempc->last if no continuation */
if ((tempb == tempc->last) &&
!curveIsClosed && !is_fixed_node(newc->end))
{
break;
}
/* calculate tangential displacement */
/*
* TODO: the upgrade of this function
* to 3 dimensions is non-trivial.
* There will need to be either two
* operator splitting sweeps, or one
* unsplit solver. There is arbitrary
* choice of tangent directions and this
* will have to be resolved.
*/
tangent(newb->end,newb,newc,tngt,newfr);
ds = grid_size_in_direction(tngt,h,dim);
/* find the stencil states */
states_at_distance_along_curve(tempb->end,tempb,tempc,
NEGATIVE_ORIENTATION,ds,nrad,
sten->leftst-1,sten->rightst-1,
sten->hs-1,sten->hse-1,sten->t-1,
sten->p-1,newfr);
if (tempb->next != NULL)
{
ansl = left_state(newb->end);
ansr = right_state(newb->end);
}
else
{
ansl = left_end_state(newc);
ansr = right_end_state(newc);
}
states_at_distance_along_curve(tempb->end,tempb,tempc,
POSITIVE_ORIENTATION,ds,nrad,
sten->leftst+1,sten->rightst+1,
sten->hs+1,sten->hse+1,sten->t+1,
sten->p+1,newfr);
sten->p[0] = tempb->end;
sten->hse[0] = Hyper_surf_element(tempb);
sten->hs[0] = Hyper_surf(tempc);
sten->t[0] = 1.0;
sten->curvature = mean_curvature_at_point(sten->p[0],sten->hse[0],
sten->hs[0],fr);
if (debugging("f_tan_prop"))
{
int j;
static const char *xyz[3] = { "x", "y", "z" };
(void) printf("state locations\n");
(void) printf("%-8s"," ");
for (i = 0; i < dim; ++i)
(void) printf("%-14s",xyz[i]);
(void) printf("\n");
for (j = -nrad; j <= nrad; ++j)
{
for (i = 0; i < dim; ++i)
(void) printf("%-14g",Coords(sten->p[j])[i]);
(void) printf("\n");
}
(void) printf("\n");
(void) printf("State values\n");
for (j = -nrad; j <= nrad; ++j)
{
(void) printf("left state[%d] at ",j);
print_general_vector("",Coords(sten->p[j]),dim,"\n");
(*fr->print_state)(
left_state_at_point_on_curve(sten->p[j],
Bond_of_hse(sten->hse[j]),
Curve_of_hs(sten->hs[j])));
(void) printf("right state[%d] at ",j);
print_general_vector("",Coords(sten->p[j]),dim,"\n");
(*fr->print_state)(
right_state_at_point_on_curve(sten->p[j],
Bond_of_hse(sten->hse[j]),
Curve_of_hs(sten->hs[j])));
(void) printf("\n");
}
}
/* update using n-point stencil tangential op */
sten->newhs = Hyper_surf(newc);
sten->dir = tngt;
npt_tang_solver(ds,dt,sten,ansl,ansr,fr);
if (fr->parab == YES)
npt_parab_tan_solver2d(ds,dt,sten,ansl,ansr,fr);
t_pt_propagated(newb->end) = YES;
if (debugging("f_tan_prop"))
{
(void) printf("answers: left right\n");
(*newfr->print_state)(ansl);
(*newfr->print_state)(ansr);
(void) printf("\n");
}
}
if (curveIsClosed)
{
/* assign start states to end states */
ft_assign(left_start_state(newc),left_end_state(newc),fr->sizest);
ft_assign(right_start_state(newc),right_end_state(newc),fr->sizest);
}
debug_print("f_tan_prop","Left f_tan_curve_propagate()\n");
} /*end f_tan_curve_propagate*/