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#include "fracture.h"
double *gen_fuse_thres(unsigned int num_edges, double *edge_coords, double beta,
double (*beta_scale)(double, double, double)) {
unsigned int size = num_edges;
assert(beta > 0);
double *fuse_thres = (double *)malloc(size * sizeof(double));
assert(fuse_thres != NULL);
gsl_set_error_handler_off();
gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937);
FILE *rf = fopen("/dev/urandom", "r");
unsigned long int seed;
fread(&seed, sizeof(unsigned long int), 1, rf);
fclose(rf);
gsl_rng_set(r, seed);
for (unsigned int i = 0; i < size; i++) {
double x = edge_coords[2 * i];
double y = edge_coords[2 * i + 1];
while ((fuse_thres[i] = gsl_sf_exp(gsl_sf_log(gsl_ran_flat(r, 0, 1)) /
beta_scale(beta, x, y))) == 0.0)
;
}
gsl_rng_free(r);
return fuse_thres;
}
void gen_voro_crack(net_t *instance, double crack_len, cholmod_common *c) {
for (uint_t i = 0; i < instance->graph->ne; i++) {
uint_t v1, v2;
double v1x, v1y, v2x, v2y, dx, dy;
v1 = instance->graph->ev[2 * i];
v2 = instance->graph->ev[2 * i + 1];
v1x = instance->graph->vert_coords[2 * v1];
v1y = instance->graph->vert_coords[2 * v1 + 1];
v2x = instance->graph->vert_coords[2 * v2];
v2y = instance->graph->vert_coords[2 * v2 + 1];
dx = v1x - v2x;
dy = v1y - v2y;
if (((v1y > 0.5 && v2y < 0.5) || (v1y < 0.5 && v2y > 0.5)) && fabs(dy) < 0.5) {
if (v1x + dx / dy * (v1y - 0.5) <= crack_len) {
break_edge(instance, i, c);
}
}
}
}
bool gen_crack(net_t *instance, double crack_len, double crack_width,
cholmod_common *c) {
assert(instance != NULL);
bool *fuses = instance->fuses;
assert(fuses != NULL);
const graph_t *network = instance->graph;
unsigned int num_edges = network->ne;
double *edge_coords = network->edge_coords;
for (unsigned int j = 0; j < num_edges; j++) {
if (edge_coords[2 * j + 1] < crack_len &&
fabs(edge_coords[2 * j] - network->L / 2) < crack_width) {
instance->fuses[j] = true;
instance->num_remaining_edges--;
} else
fuses[j] = false;
}
return true;
}
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