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/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2006-2012 Gabor Csardi <csardi.gabor@gmail.com>
334 Harvard st, Cambridge MA, 02139 USA
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <igraph/igraph.h>
#include <math.h>
void print_vector(igraph_vector_t *v, FILE *f) {
long int i;
for (i=0; i<igraph_vector_size(v); i++) {
fprintf(f, " %li", (long int) VECTOR(*v)[i]);
}
fprintf(f, "\n");
}
int main() {
igraph_t g;
igraph_matrix_t coords;
long int i, n;
igraph_vector_t v;
int ret;
int c;
printf("[-] create graph\n");
/*VECTOR(v)[0]=0; VECTOR(v)[1]=1;
VECTOR(v)[2]=1; VECTOR(v)[3]=2;
VECTOR(v)[4]=2; VECTOR(v)[5]=3;
VECTOR(v)[6]=2; VECTOR(v)[7]=3;
igraph_create(&g, &v, 0, 0);*/ /* Creates a graph with the specified edges */
igraph_empty(&g, 0, 0);
printf("[-] add edges\n");
igraph_add_vertices(&g, 1, 0);
igraph_add_vertices(&g, 1, 0);
igraph_add_edge(&g, 0, 1);
igraph_add_vertices(&g, 1, 0);
igraph_add_edge(&g, 0, 2);
igraph_add_vertices(&g, 1, 0);
igraph_add_edge(&g, 0, 3);
igraph_add_vertices(&g, 1, 0);
igraph_add_edge(&g, 0, 4);
igraph_add_vertices(&g, 1, 0);
igraph_add_edge(&g, 4, 5);
printf("[-] entering loop\n");
for (c=0; c<=2; c++) {
printf("[*] === loop %d ===\n", c);
printf("[-] add one edges\n");
igraph_add_vertices(&g, 1, 0);
igraph_add_edge(&g, 4, 6 + c);
printf("[-] check edges\n");
printf("edge count: %d\n", igraph_ecount(&g));
igraph_vector_init(&v, igraph_ecount(&g));
igraph_get_edgelist(&g, &v, 0);
print_vector(&v, stdout);
printf("[-] apply layout\n");
igraph_matrix_init(&coords, 0, 0);
igraph_layout_reingold_tilford(&g, &coords, IGRAPH_IN, 0, 0);
printf("[-] show vertices\n");
n=igraph_vcount(&g);
for (i=0; i<n; i++) {
printf("%d: %6.3f %6.3f\n", i, MATRIX(coords, i, 0), MATRIX(coords, i, 1));
}
}
printf("[*] destroying graph\n");
//igraph_vector_destroy(&v);
igraph_matrix_destroy(&coords);
igraph_destroy(&g);
return 0;
}
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