started repo again without all the data files gunking the works

1 files changed, 53 insertions, 0 deletions

diff --git a/src/cracking_ini.c b/src/cracking_ini.c
new file mode 100644
index 0000000..9ab4a9d
--- /dev/null
+++ b/src/cracking_ini.c
@@ -0,0 +1,53 @@
+
+#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;
+}
+
+bool gen_crack(finst *instance, double crack_len, double crack_width,
+							 cholmod_common *c) {
+	assert(instance != NULL);
+	bool *fuses = instance->fuses;
+	assert(fuses != NULL);
+	const fnet *network = instance->network;
+	unsigned int num_edges = network->num_edges;
+	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;
+}