/* applyAttr:
* Attractive force = weight*(d*d)/K
* or force = (d - L(e))*weight(e)
*/
static void
applyAttr (Agnode_t* p, Agnode_t* q, Agedge_t* e)
{
double xdelta, ydelta;
double force;
double dist;
double dist2;
xdelta = ND_pos(q)[0] - ND_pos(p)[0];
ydelta = ND_pos(q)[1] - ND_pos(p)[1];
dist2 = xdelta*xdelta + ydelta*ydelta;
while (dist2 == 0.0) {
xdelta = 5 - rand()%10;
ydelta = 5 - rand()%10;
dist2 = xdelta*xdelta + ydelta*ydelta;
}
dist = sqrt (dist2);
if (T_useNew)
force = (ED_factor(e) * (dist - ED_dist(e)))/dist;
else
force = (ED_factor(e) * dist)/ED_dist(e);
DISP(q)[0] -= xdelta * force;
DISP(q)[1] -= ydelta * force;
DISP(p)[0] += xdelta * force;
DISP(p)[1] += ydelta * force;
}
static void circular_init_edge(edge_t * e)
{
agbindrec(e, "Agedgeinfo_t", sizeof(Agedgeinfo_t), TRUE); //node custom data
common_init_edge(e);
ED_factor(e) = late_double(e, E_weight, 1.0, 0.0);
}
/* init_edge:
*/
static void init_edge(edge_t * e, attrsym_t * E_len)
{
ED_factor(e) = late_double(e, E_weight, 1.0, 0.0);
ED_dist(e) = late_double(e, E_len, fdp_parms.K, 0.0);
common_init_edge(e);
}
static void twopi_init_edge(edge_t * e)
{
#ifdef WITH_CGRAPH
agbindrec(e, "Agedgeinfo_t", sizeof(Agedgeinfo_t), TRUE); //edge custom data
#endif /* WITH_CGRAPH */
common_init_edge(e);
ED_factor(e) = late_double(e, E_weight, 1.0, 0.0);
}
void neato_init_edge(edge_t * e)
{
common_init_edge(e);
ED_factor(e) = late_double(e, E_weight, 1.0, 1.0);
}
static void twopi_init_edge(edge_t * e)
{
common_init_edge(e);
ED_factor(e) = late_double(e, E_weight, 1.0, 0.0);
}
