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grain3d.cpp
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grain3d.cpp
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//#define DEBUG
#include "cbody.h"
#include "cnode.h"
#include "functions.h"
#include "globals.h"
#include <cstdio>
#include <ostream>
#include <iostream>
#include <fstream>
#include <cmath>
#include <omp.h>
#include <iomanip>
#include <vector>
#include <algorithm>
/////////////////////////////////////////////////////////////////
// THE MAIN PROGRAM
int main(int argc, char *argv[])
{
read_in_data(argc, argv);
initialize_variables();
determine_neighbors();
determine_node_topologies();
fit_nodes_in_cube();
// TIME EVOLUTION UNTIL FEW GRAINS REMAIN
int start_body = count_bodies();
int num_bodies = start_body;
while (num_bodies > end_body || step_count < min_steps)
{
update_variables();
if (step_count % refine_edges_number == 0)
{
refine_edges();
}
if (step_count % remove_system_edge_nodes_number == 0)
{
remove_system_edge_nodes();
}
calc_motions();
if (count_bodies() > end_body)
{
remove_small_edges();
remove_small_faces();
remove_small_bodies();
}
move_nodes();
if (output_during_run)
{
if (step_count % output_whole_system_number == 0)
{
surface_evolver_system();
}
if (step_count % output_specific_neigh == 0)
{
for (int c = 1; c <= start_body; c++)
{
cluster_evolver_out(c);
}
}
if (step_count % output_specific == 0)
{
for (int c = 1; c <= start_body; c++)
{
evolver_out(c);
}
}
}
total_time += time_scale;
step_count++;
num_bodies = count_bodies();
// output key statistics about the system
if (step_count % output_summary_number == 0)
{
compactify();
calc_volumes();
calc_areas();
calc_avg_face_area();
calc_and_print_stats();
}
}
if (!output_during_run)
{
for (int c = 1; c <= start_body; c++)
{
evolver_out(c);
}
// for (int c = 0; c < count_bodies(); c++)
// {
// evolver_out(c);
// }
}
}
// THE MAIN PROGRAM
/////////////////////////////////////////////////////////////////
void update_variables()
{
time_scale = 1. / (double)count_bodies() / 2500.;
smallest_edge = 0.015 * pow(1. / (double)count_bodies(), 1. / 3.); // C=0.15 gives on average 310 triangles per shape
}
void initialize_variables()
{
#pragma omp parallel
nthreads = omp_get_num_threads();
omp_set_num_threads(nthreads);
offcounter1 = 0;
offcounter2 = 0;
offcounter3 = 0;
toffcounter2 = 0;
toffcounter3 = 0;
time_scale = 1. / (double)count_bodies() / 2500.;
smallest_edge = 0.015 * pow(1. / (double)count_bodies(), 1. / 3.); // this gives on average 310 triangles per shape
}