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#include <cassert>
#include <sstream>
#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
#include "carpet.hh"
#include "evolution_mask.hh"
namespace CarpetEvolutionMask {
using namespace std;
using namespace Carpet;
void
CarpetEvolutionMaskSetup (CCTK_ARGUMENTS)
{
DECLARE_CCTK_PARAMETERS;
// ask the flesh what the value of carpet::buffer_width is...
// this should be fixed at some point...
CCTK_INT use_outer_buffer_zones = *(CCTK_INT*) CCTK_ParameterGet
("use_outer_buffer_zones","Carpet",0);
CCTK_INT buffer_width;
if (use_outer_buffer_zones) {
buffer_width = 0;
} else {
buffer_width = *(CCTK_INT*) CCTK_ParameterGet
("buffer_width","Carpet",0);
}
// cout << "buffer width: " << buffer_width << endl;
if (! is_singlemap_mode()) {
CCTK_WARN (0, "This routine may only be called in singlemap mode");
}
if (reflevel > 0) {
ivect const izero = ivect(0);
ivect const ione = ivect(1);
gh const & hh = *vhh.at(Carpet::map);
dh const & dd = *vdd.at(Carpet::map);
ibbox const & base = hh.bases().at(mglevel).at(reflevel).expand(100,100);
ibbox const & coarsebase = hh.bases().at(mglevel).at(reflevel-1).expand(100,100);
ivect const reffact
= spacereffacts.at(reflevel) / spacereffacts.at(reflevel-1);
assert (all (reffact == 2));
// cout << "base: " << base << endl;
// cout << "coarsebase: " << coarsebase << endl;
// Calculate the union of all refined regions
ibset refined;
for (int c=0; c<hh.components(reflevel); ++c) {
ibbox refcomp = hh.extents().at(mglevel).at(reflevel).at(c);
bbvect outer_boundary = hh.outer_boundary(reflevel,c);
ivect expand_right, expand_left;
for (int d=0;d<dim;d++) {
if (outer_boundary[d][0]) {
expand_left[d] = 50;
} else {
expand_left[d] = 0;
}
if (outer_boundary[d][1]) {
expand_right[d] = 50;
} else {
expand_right[d] = 0;
}
}
// cout << "rl,c,expand_left,expand_right" << " " << reflevel << " " << c
// << " " << expand_left << " " << expand_right << endl;
refcomp = refcomp.expand(expand_left,expand_right);
refined |= refcomp;
}
refined.normalize();
// cout << "refined: " << refined << endl;
// calculate inverse set of refined regions on the current level
ibset antirefined = base - refined;
// cout << "antirefined: " << antirefined << endl;
// now make antibase larger
// make refined regions SMALLER
ivect antishrinkby;
for (int d=0; d<dim;d++) {
antishrinkby[d] = cctkGH->cctk_nghostzones[d] + buffer_width;
}
ibset antishrunk;
for (ibset::const_iterator bi = antirefined.begin();
bi != antirefined.end();
++bi)
{
antishrunk |= (*bi).expand(antishrinkby, antishrinkby).expanded_for(coarsebase);
}
antishrunk.normalize();
// cout << "antishrunk1: " << antishrunk << endl;
// now cut away dangling edges
antishrunk &= coarsebase;
// cout << "antishrunk2: " << antishrunk << endl;
// cut holes into coarsebase
ibset shrunk = coarsebase - antishrunk;
// cout << "shrunk: " << shrunk << endl;
// Calculate the union of all coarse regions
ibset parent;
for (int c=0; c<hh.components(reflevel-1); ++c) {
parent |= hh.extents().at(mglevel).at(reflevel-1).at(c);
}
parent.normalize();
// cout << "parent: " << parent << endl;
// Subtract the refined region
ibset notrefined = parent - shrunk;
notrefined.normalize();
// cout << "notrefined: " << notrefined << endl;
ivect enlargeby;
int stencil_size = dd.prolongation_stencil_size();
for (int d=0; d<dim;d++) {
enlargeby[d] = cctkGH->cctk_nghostzones[d] + buffer_width +
stencil_size;
}
ibset enlarged;
for (ibset::const_iterator bi = notrefined.begin();
bi != notrefined.end();
++bi)
{
enlarged |= (*bi).expand(enlargeby, enlargeby);
}
enlarged.normalize();
// cout << "enlarged: " << enlarged << endl;
// Intersect with the original union
ibset evolveon = parent & enlarged;
evolveon.normalize();
ibset notevolveon = parent - evolveon;
notevolveon.normalize();
// cout << "notevolveon: " << notevolveon << endl;
// Set not evolved region on next coarser level
{
int const oldreflevel = reflevel;
int const oldgrouptype = mc_grouptype;
int const oldmap = Carpet::map;
leave_singlemap_mode (cctkGH);
leave_level_mode (cctkGH);
enter_level_mode (cctkGH, oldreflevel-1);
enter_singlemap_mode (cctkGH, oldmap, oldgrouptype);
BEGIN_LOCAL_COMPONENT_LOOP (cctkGH, CCTK_GF) {
DECLARE_CCTK_ARGUMENTS;
ibbox const & ext
= dd.boxes.at(mglevel).at(reflevel).at(component).exterior;
for (ibset::const_iterator bi = notevolveon.begin();
bi != notevolveon.end();
++bi)
{
ibbox const & box = (*bi) & ext;
if (! box.empty()) {
assert (all ((box.lower() - ext.lower() ) >= 0));
assert (all ((box.upper() - ext.lower() + ext.stride()) >= 0));
assert (all ((box.lower() - ext.lower() ) % ext.stride() == 0));
assert (all ((box.upper() - ext.lower() + ext.stride()) % ext.stride() == 0));
ivect const imin = (box.lower() - ext.lower() ) / ext.stride();
ivect const imax = (box.upper() - ext.lower() + ext.stride()) / ext.stride();
assert (all (izero <= imin));
assert (box.empty() || all (imin <= imax));
assert (all (imax <= ivect::ref(cctk_lsh)));
if (verbose) {
ostringstream buf;
buf << "Setting restricted region on level " << reflevel << " to weight 0: " << imin << ":" << imax-ione;
CCTK_INFO (buf.str().c_str());
}
// Set mask in the restricted region to 0
assert (dim == 3);
for (int k=imin[2]; k<imax[2]; ++k) {
for (int j=imin[1]; j<imax[1]; ++j) {
for (int i=imin[0]; i<imax[0]; ++i) {
int const ind = CCTK_GFINDEX3D (cctkGH, i, j, k);
evolution_mask[ind] = 0;
}
}
}
} // if box not empty
} // for box
} END_LOCAL_COMPONENT_LOOP;
leave_singlemap_mode (cctkGH);
leave_level_mode (cctkGH);
enter_level_mode (cctkGH, oldreflevel);
enter_singlemap_mode (cctkGH, oldmap, oldgrouptype);
}
} // if reflevel>0
}
} // namespace CarpetEvolutionMask
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