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Fix weights and annotations for phantom points on one segment

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This commit is contained in:
Michael Krasnyk
2017-03-11 14:46:22 +01:00
parent fe5d1a6e74
commit 6586737835
2 changed files with 21 additions and 8 deletions
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include/engine/routing_algorithms/routing_base_mld.hpp
+7 -3
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@@ -35,12 +35,16 @@ void routingStep(const datafacade::ContiguousInternalMemoryDataFacade<algorithm:
const auto weight = forward_heap.GetKey(node);
auto update_upper_bounds = [&](NodeID to, EdgeWeight forward_weight, EdgeWeight edge_weight) {
if (reverse_heap.WasInserted(to) && reverse_heap.WasRemoved(to))
// Upper bound for the path source -> target with
// weight(source -> node) = forward_weight, weight(node -> to) = edge_weight and
// weight(to -> target) ≤ reverse_weight is forward_weight + edge_weight + reverse_weight
// More tighter upper bound requires additional condition reverse_heap.WasRemoved(to)
// with weight(to -> target) = reverse_weight and all weights ≥ 0
if (reverse_heap.WasInserted(to))
{
auto reverse_weight = reverse_heap.GetKey(to);
auto path_weight = forward_weight + edge_weight + reverse_weight;
BOOST_ASSERT(path_weight >= 0);
if (path_weight < path_upper_bound)
if (path_weight >= 0 && path_weight < path_upper_bound)
{
middle_node = to;
path_upper_bound = path_weight;