CollisionInfo
BoundingBox::collisionCheck(const PhysicsObject *object) const
{
PhysicsObjectType otherType = object->getType();
switch(otherType) {
default:
return PhysicsObject::collisionCheck(object);
case PHYSICS_OBJECT_TYPE_POINT:
return pointInBox(object->getPosition(), m_position, m_bounds);
case PHYSICS_OBJECT_TYPE_BOUNDING_BOX:
return collisionCheck((const BoundingBox *)object);
}
}
//---------------------------------------------------------------------------//
// Redistribute a set of range entity centroid coordinates with their owner
// ranks to the owning domain process.
void CoarseGlobalSearch::search( const EntityIterator& range_iterator,
const Teuchos::RCP<EntityLocalMap>& range_local_map,
const Teuchos::ParameterList& parameters,
Teuchos::Array<EntityId>& range_entity_ids,
Teuchos::Array<int>& range_owner_ranks,
Teuchos::Array<double>& range_centroids ) const
{
// Assemble the local range bounding box.
Teuchos::Tuple<double,6> range_box;
assembleBoundingBox( range_iterator, range_box );
// Find the domain boxes it intersects with.
Teuchos::Array<int> neighbor_ranks;
Teuchos::Array<Teuchos::Tuple<double,6> > neighbor_boxes;
int num_domains = d_domain_boxes.size();
for ( int n = 0; n < num_domains; ++n )
{
if ( boxesIntersect(range_box,d_domain_boxes[n],d_inclusion_tol) )
{
neighbor_ranks.push_back(n);
neighbor_boxes.push_back( d_domain_boxes[n] );
}
}
// For each local range entity, find the neighbors we should send it to.
int num_neighbors = neighbor_boxes.size();
EntityIterator range_begin = range_iterator.begin();
EntityIterator range_end = range_iterator.end();
EntityIterator range_it;
Teuchos::Array<EntityId> send_ids;
Teuchos::Array<int> send_ranks;
Teuchos::Array<double> send_centroids;
Teuchos::Array<double> centroid(d_space_dim);
bool found_entity = false;
for ( range_it = range_begin; range_it != range_end; ++range_it )
{
// Get the centroid.
range_local_map->centroid( *range_it, centroid() );
// Check the neighbors.
found_entity = false;
for ( int n = 0; n < num_neighbors; ++n )
{
// If the centroid is in the box, add it to the send list.
if ( pointInBox(centroid(),neighbor_boxes[n],d_inclusion_tol) )
{
found_entity = true;
send_ids.push_back( range_it->id() );
send_ranks.push_back( neighbor_ranks[n] );
for ( int d = 0; d < d_space_dim; ++d )
{
send_centroids.push_back( centroid[d] );
}
}
}
// If we are tracking missed range entities, add the entity to the
// list.
if ( d_track_missed_range_entities && !found_entity )
{
d_missed_range_entity_ids.push_back( range_it->id() );
}
}
int num_send = send_ranks.size();
Teuchos::Array<int> range_ranks( num_send, d_comm->getRank() );
// Create a distributor.
Tpetra::Distributor distributor(d_comm);
int num_range_import = distributor.createFromSends( send_ranks() );
// Redistribute the range entity ids.
Teuchos::ArrayView<const EntityId> send_ids_view = send_ids();
range_entity_ids.resize( num_range_import );
distributor.doPostsAndWaits( send_ids_view, 1, range_entity_ids() );
// Redistribute the range entity owner ranks.
Teuchos::ArrayView<const int> range_ranks_view = range_ranks();
range_owner_ranks.resize( num_range_import );
distributor.doPostsAndWaits( range_ranks_view, 1, range_owner_ranks() );
// Redistribute the range entity centroids.
range_centroids.resize( d_space_dim*num_range_import );
Teuchos::ArrayView<const double> send_centroids_view = send_centroids();
distributor.doPostsAndWaits(
send_centroids_view, d_space_dim, range_centroids() );
}
