vlink duplicateList(vlink head) {
vlink nhead = NULL, ncurr = NULL, curr = head;
while (curr != NULL) {
if (nhead == NULL) {
nhead = duplicateNode(curr);
ncurr = nhead;
} else {
ncurr->next = duplicateNode(curr);
ncurr = ncurr->next;
}
curr = curr->next;
}
return nhead;
}
void PertyDuplicatePoiOp::apply(shared_ptr<OsmMap>& map)
{
MapProjector::projectToPlanar(map);
boost::uniform_real<> uni(0.0, 1.0);
boost::normal_distribution<> nd;
boost::variate_generator<boost::minstd_rand&, boost::normal_distribution<> > N(*_rng, nd);
// make a copy since we'll be modifying the map as we go.
NodeMap nm = map->getNodeMap();
for (NodeMap::const_iterator it = nm.begin(); it != nm.end(); ++it)
{
if (uni(*_rng) < _p)
{
const NodePtr& n = it->second;
int copies = round(fabs(N() * _duplicateSigma)) + 1;
for (int i = 0; i < copies; i++)
{
duplicateNode(n, map);
}
}
}
}
