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authorpants <jaron@kent-dobias.com>2016-09-08 12:46:49 -0400
committerpants <jaron@kent-dobias.com>2016-09-08 12:46:49 -0400
commit9c6505dace488032dc4f5e3bbb8c5a4cb154b429 (patch)
tree7d2323a5bb0d01a1675905dcdf7289bf33d03e4f /src/randfuncs.c
parent2b7e4f906d8595994c36f9254574caff13c172a4 (diff)
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more refactoring
Diffstat (limited to 'src/randfuncs.c')
-rw-r--r--src/randfuncs.c93
1 files changed, 0 insertions, 93 deletions
diff --git a/src/randfuncs.c b/src/randfuncs.c
deleted file mode 100644
index 137c7ff..0000000
--- a/src/randfuncs.c
+++ /dev/null
@@ -1,93 +0,0 @@
-
-#include "fracture.h"
-
-double *genfunc_uniform(unsigned int L, bound_t boundary, gsl_rng *r, unsigned int *num) {
- *num = pow(L / 2 + 1, 2) + pow((L + 1) / 2, 2);
-
- double *lattice = (double *)malloc(2 * (*num) * sizeof(double));
- for (unsigned int i = 0; i < (*num); i++) {
- lattice[2*i] = gsl_ran_flat(r, 0, 1);
- lattice[2*i+1] = gsl_ran_flat(r, 0, 1);
- }
-
- return lattice;
-}
-
-double *genfunc_hyperuniform(unsigned int L, bound_t boundary, gsl_rng *r, unsigned int *num) {
- *num = pow(L / 2 + 1, 2) + pow((L + 1) / 2, 2);
-
- // necessary to prevent crashing when underflow occurs
- gsl_set_error_handler_off();
-
- double *lattice = (double *)malloc(2 * (*num) * sizeof(double));
- double rho = *num;
- unsigned int to_gen = *num;
- unsigned int start = 0;
-
- if (boundary == EMBEDDED_BOUND) {
- for (unsigned int i = 0; i < L / 2; i++) {
- lattice[2 * i + 1] = 0;
- lattice[2 * i] = (2. * i + 1.) / L;
-
- lattice[L + 2 * i + 1] = 1;
- lattice[L + 2 * i] = (2. * i + 1.) / L;
-
- lattice[2 * L + 2 * i + 1] = (2. * i + 1.) / L;
- lattice[2 * L + 2 * i] = 0;
-
- lattice[3 * L + 2 * i + 1] = (2. * i + 1.) / L;
- lattice[3 * L + 2 * i] = 1;
- }
-
- to_gen -= 2 * L;
- start = 2 * L;
- }
-
- for (unsigned int i = 0; i < to_gen; i++) {
- bool reject = true;
- double x, y;
- while(reject) {
- x = gsl_ran_flat(r, 0, 1);
- y = gsl_ran_flat(r, 0, 1);
- reject = false;
- for (unsigned int j = 0; j < i; j++) {
- double *ds = (double *)malloc(5 * sizeof(double));
- ds[0] = pow(x-lattice[2*j],2)+pow(y-lattice[2*j+1],2);
- ds[1] = pow(x-lattice[2*j] + 1,2)+pow(y-lattice[2*j+1],2);
- ds[2] = pow(x-lattice[2*j] - 1,2)+pow(y-lattice[2*j+1],2);
- ds[3] = pow(x-lattice[2*j],2)+pow(y-lattice[2*j+1] + 1,2);
- ds[4] = pow(x-lattice[2*j],2)+pow(y-lattice[2*j+1] - 1,2);
- double min_val = 100;
- for (unsigned int k = 0; k < 5; k++) {
- if (min_val > ds[k]) {
- min_val = ds[k];
- }
- }
- if (1-gsl_sf_exp(-M_PI * rho * min_val) < gsl_ran_flat(r, 0, 1)) {
- reject = true;
- break;
- }
- }
- }
- lattice[2*start + 2 * i] = x;
- lattice[2*start + 2 * i + 1] = y;
- }
-
- return lattice;
-}
-
-void randfunc_flat(gsl_rng *r, double *x, double *y) {
- *x = gsl_ran_flat(r, 0, 1);
- *y = gsl_ran_flat(r, 0, 1);
-}
-
-void randfunc_gaus(gsl_rng *r, double *x, double *y) {
- *x = 100;
- *y = 100;
- double sigma = 0.25;
- while (fabs(*x) > 0.5 || fabs(*y) > 0.5) {
- gsl_ran_bivariate_gaussian(r, sigma, sigma, 0, x, y);
- }
- *x += 0.5;
- *y += 0.5;
-}