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// Voronoi calculation example code
//
// Author : Chris H. Rycroft (Harvard University / LBL)
// Email : chr@alum.mit.edu
// Date : August 30th 2011
#include "voro++.hh"
using namespace voro;
// Set up constants for the container geometry
const double x_min=-1,x_max=1;
const double y_min=-1,y_max=1;
const double z_min=-1,z_max=1;
const double cvol=(x_max-x_min)*(y_max-y_min)*(x_max-x_min);
// Set up the number of blocks that the container is divided into
const int n_x=6,n_y=6,n_z=6;
// Set the number of particles that are going to be randomly introduced
const int particles=20;
// This function returns a random double between 0 and 1
double rnd() {return double(rand())/RAND_MAX;}
int main() {
int i;
double x,y,z;
// Create a container with the geometry given above, and make it
// non-periodic in each of the three coordinates. Allocate space for
// eight particles within each computational block
container_periodic_poly con(2,0.5,2,0,0,2,n_x,n_y,n_z,8);
// Randomly add particles into the container
for(i=0;i<4;i++) {
x=x_min+rnd()*(x_max-x_min);
y=y_min+rnd()*(y_max-y_min);
z=z_min+rnd()*(z_max-z_min);
con.put(i,x,y,0,1);
}
// Output the particle positions in gnuplot format
con.draw_particles("ghost_test_p.gnu");
// Output the Voronoi cells in gnuplot format
con.draw_cells_gnuplot("ghost_test_v.gnu");
// Open file for test ghost cell
FILE *fp=safe_fopen("ghost_test_c.gnu","w");
voronoicell c;
// Compute a range of ghost cells
// for(y=-3.5;y<3.5;y+=0.05) if(con.compute_ghost_cell(c,1,y,0,1))
// c.draw_gnuplot(1,y,0,fp);
// Compute a single ghost cell
if(con.compute_ghost_cell(c,1.56,0.67,0,1)) c.draw_gnuplot(1.56,0.67,0,fp);
// Close ghost cell file
fclose(fp);
// Draw the domain
con.draw_domain_gnuplot("ghost_test_d.gnu");
}