inline bool is_air (const chunk_coordinates& pos)
{
if (!is_coarse_height_available(pos))
return false;
return is_air_chunk(pos, get_coarse_height(pos));
}
void on_update_height(map_coordinates pos, chunk_height z)
{
// The coarse height map has been changed. Cancel all occlusion
// queries above this limit.
boost::mutex::scoped_lock l (lock);
for (auto& d : occlusion_queries)
{
for (auto& qry : d)
{
if ( //qry.second.state() == occlusion_query::visible
map_coordinates(qry.first) == pos
&& is_air_chunk(qry.first, z))
{
//trace("OQ %1% is above height limit, canceling", world_rel_coordinates(qry.first - world_chunk_center));
qry.second.set_state(occlusion_query::air);
}
}
}
}
