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#include <getopt.h>
#include <stdio.h>
#ifdef HAVE_GLUT
#include <GL/glut.h>
#endif
#include <vector.h>
#include <orthogonal.h>
#include <wolff.h>
#include <correlation.h>
#include <measure.h>
#include <colors.h>
#include <rand.h>
typedef orthogonal_t <N_COMP, double> orthogonal_R_t;
typedef vector_t <N_COMP, double> vector_R_t;
typedef state_t <orthogonal_R_t, vector_R_t> On_t;
// angle from the x-axis of a two-vector
double theta(vector_R_t v) {
double x = v.x[0];
double y = v.x[1];
double val = atan(y / x);
if (x < 0.0 && y > 0.0) {
return M_PI + val;
} else if ( x < 0.0 && y < 0.0 ) {
return - M_PI + val;
} else {
return val;
}
}
double H_modulated(vector_R_t v, int order, double mag) {
return mag * cos(order * theta(v));
}
int main(int argc, char *argv[]) {
count_t N = (count_t)1e7;
D_t D = 2;
L_t L = 128;
double T = 2.26918531421;
double *H_vec = (double *)calloc(MAX_Q, sizeof(double));
bool silent = false;
bool use_pert = false;
bool N_is_sweeps = false;
bool draw = false;
unsigned int window_size = 512;
bool modulated_field = false;
unsigned int order = 1;
int opt;
q_t H_ind = 0;
double epsilon = 1;
// unsigned char measurement_flags = measurement_energy | measurement_clusterSize;
unsigned char measurement_flags = 0;
while ((opt = getopt(argc, argv, "N:D:L:T:H:spe:mo:M:Sdw:")) != -1) {
switch (opt) {
case 'N': // number of steps
N = (count_t)atof(optarg);
break;
case 'D': // dimension
D = atoi(optarg);
break;
case 'L': // linear size
L = atoi(optarg);
break;
case 'T': // temperature
T = atof(optarg);
break;
case 'H': // external field. nth call couples to state n
H_vec[H_ind] = atof(optarg);
H_ind++;
break;
case 's': // don't print anything during simulation. speeds up slightly
silent = true;
break;
case 'p':
use_pert = true;
break;
case 'e':
epsilon = atof(optarg);
break;
case 'm':
modulated_field = true;
break;
case 'M':
measurement_flags ^= 1 << atoi(optarg);
break;
case 'o':
order = atoi(optarg);
break;
case 'S':
N_is_sweeps = true;
break;
case 'd':
#ifdef HAVE_GLUT
draw = true;
break;
#else
printf("You didn't compile this with the glut library installed!\n");
exit(EXIT_FAILURE);
#endif
case 'w':
window_size = atoi(optarg);
break;
default:
exit(EXIT_FAILURE);
}
}
unsigned long timestamp;
{
struct timespec spec;
clock_gettime(CLOCK_REALTIME, &spec);
timestamp = spec.tv_sec*1000000000LL + spec.tv_nsec;
}
const char *pert_type;
std::function <orthogonal_R_t(gsl_rng *, vector_R_t)> gen_R;
if (use_pert) {
gen_R = std::bind(generate_rotation_perturbation <N_COMP>, std::placeholders::_1, std::placeholders::_2, epsilon, order);
pert_type = "PERTURB";
} else {
gen_R = generate_rotation_uniform <N_COMP>;
pert_type = "UNIFORM";
}
FILE *outfile_info = fopen("wolff_metadata.txt", "a");
fprintf(outfile_info, "<| \"ID\" -> %lu, \"MODEL\" -> \"%s\", \"q\" -> %d, \"D\" -> %" PRID ", \"L\" -> %" PRIL ", \"NV\" -> %" PRIv ", \"NE\" -> %" PRIv ", \"T\" -> %.15f, \"FIELD_TYPE\" -> ", timestamp, ON_strings[N_COMP], N_COMP, D, L, (v_t)pow(L, D), D * (v_t)pow(L, D), T);
if (modulated_field) {
fprintf(outfile_info, "\"MODULATED\", \"ORDER\" -> %d, \"H\" -> %.15f, ", order, H_vec[0]);
} else {
fprintf(outfile_info, "\"VECTOR\", \"H\" -> {");
for (q_t i = 0; i < N_COMP; i++) {
fprintf(outfile_info, "%.15f", H_vec[i]);
if (i < N_COMP - 1) {
fprintf(outfile_info, ", ");
}
}
fprintf(outfile_info, "}, ");
}
fprintf(outfile_info, "\"GENERATOR\" -> \"%s\"", pert_type);
if (use_pert) {
fprintf(outfile_info, ", \"EPS\" -> %g", epsilon);
}
fprintf(outfile_info, " |>\n");
fclose(outfile_info);
FILE **outfiles = measure_setup_files(measurement_flags, timestamp);
std::function <void(const On_t *)> other_f;
uint64_t sum_of_clusterSize = 0;
if (N_is_sweeps) {
other_f = [&] (const On_t *s) {
sum_of_clusterSize += s->last_cluster_size;
};
} else if (draw) {
#ifdef HAVE_GLUT
// initialize glut
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(window_size, window_size);
glutCreateWindow("wolff");
glClearColor(0.0,0.0,0.0,0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0, L, 0.0, L);
other_f = [&] (const On_t *s) {
glClear(GL_COLOR_BUFFER_BIT);
for (v_t i = 0; i < pow(L, 2); i++) {
vector_R_t v_tmp = act_inverse(s->R, s->spins[i]);
double thetai = fmod(2 * M_PI + theta(v_tmp), 2 * M_PI);
free_spin(v_tmp);
double saturation = 0.7;
double value = 0.9;
double chroma = saturation * value;
glColor3f(chroma * hue_to_R(thetai) + (value - chroma), chroma * hue_to_G(thetai) + (value - chroma), chroma * hue_to_B(thetai) + (value - chroma));
glRecti(i / L, i % L, (i / L) + 1, (i % L) + 1);
}
glFlush();
};
#endif
} else {
other_f = [] (const On_t *s) {};
}
std::function <void(const On_t *)> measurements = measure_function_write_files(measurement_flags, outfiles, other_f);
std::function <double(vector_R_t)> H;
if (modulated_field) {
H = std::bind(H_modulated, std::placeholders::_1, order, H_vec[0]);
} else {
H = std::bind(H_vector <N_COMP, double>, std::placeholders::_1, H_vec);
}
// initialize random number generator
gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937);
gsl_rng_set(r, rand_seed());
state_t <orthogonal_R_t, vector_R_t> s(D, L, T, dot <N_COMP, double>, H);
if (N_is_sweeps) {
count_t N_rounds = 0;
printf("\n");
while (sum_of_clusterSize < N * s.nv) {
printf("\033[F\033[J\033[F\033[JWOLFF: sweep %" PRIu64 " / %" PRIu64 ": E = %.2f, S = %" PRIv "\n", (count_t)((double)sum_of_clusterSize / (double)s.nv), N, s.E, s.last_cluster_size);
wolff <orthogonal_R_t, vector_R_t> (N, &s, gen_R, measurements, r, silent);
N_rounds++;
}
printf("\033[F\033[J\033[F\033[JWOLFF: sweep %" PRIu64 " / %" PRIu64 ": E = %.2f, S = %" PRIv "\n\n", (count_t)((double)sum_of_clusterSize / (double)s.nv), N, s.E, s.last_cluster_size);
} else {
wolff <orthogonal_R_t, vector_R_t> (N, &s, gen_R, measurements, r, silent);
}
measure_free_files(measurement_flags, outfiles);
free(H_vec);
gsl_rng_free(r);
return 0;
}
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