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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.h>
#include <igraph_types_internal.h>
#include <stdlib.h>
#include <time.h>
int igraph_i_layout_merge_dla(igraph_i_layout_mergegrid_t *grid,
long int actg, igraph_real_t *x, igraph_real_t *y, igraph_real_t r,
igraph_real_t cx, igraph_real_t cy, igraph_real_t startr,
igraph_real_t killr);
int main() {
/*******************/
/* Testing the DLA */
/*******************/
long int nodes=10;
igraph_i_layout_mergegrid_t grid;
igraph_vector_t x, y, r;
long int i;
igraph_rng_seed(igraph_rng_default(), 42);
igraph_vector_init(&x, nodes);
igraph_vector_init(&y, nodes);
igraph_vector_init(&r, nodes);
igraph_i_layout_mergegrid_init(&grid, -5, 5, 100, -5, 5, 100);
/* radius */
for (i=0; i<nodes; i++) {
VECTOR(r)[i]=rand()/(double)RAND_MAX;
}
igraph_vector_sort(&r);
/* place */
VECTOR(x)[0]=0;
VECTOR(y)[0]=0;
igraph_i_layout_merge_place_sphere(&grid, 0, 0, VECTOR(r)[nodes-1], 0);
for (i=1; i<nodes; i++) {
/* fprintf(stderr, "%li ", i); */
igraph_i_layout_merge_dla(&grid, i,
igraph_vector_e_ptr(&x, i),
igraph_vector_e_ptr(&y, i),
VECTOR(r)[nodes-i-1], 0, 0, 4, 7);
igraph_i_layout_merge_place_sphere(&grid, VECTOR(x)[i], VECTOR(y)[i],
VECTOR(r)[nodes-i-1], i);
}
/* for (i=0; i<nodes; i++) { */
/* printf("%f %f\n", VECTOR(x)[i], VECTOR(y)[i]); */
/* } */
/* print_grid(&grid, stdout); */
igraph_vector_destroy(&x);
igraph_vector_destroy(&y);
igraph_vector_destroy(&r);
igraph_i_layout_mergegrid_destroy(&grid);
return 0;
}
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