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When we can't detect which roads a crosswalk covers, assume there's no

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marked crossing most of the time. #795
This commit is contained in:
Dustin Carlino 2021-11-18 13:31:30 -08:00
parent fa5e1e4e95
commit 244e965427
1 changed files with 11 additions and 0 deletions
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11
map_model/src/make/walking_turns.rs
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@ -198,6 +198,17 @@ pub fn filter_turns(mut input: Vec<Turn>, map: &Map, i: &Intersection) -> Vec<Tu
if !keep {
turn.turn_type = TurnType::UnmarkedCrossing;
}
} else if turn.turn_type.pedestrian_crossing() {
// We have a crosswalk over multiple roads (or sometimes, just one road that only has a
// walkable lane on one side of it). We can't yet detect all the roads crossed. So for
// now, it's more often correct to assume that if any nearby roads don't have a
// crossing snapped to both ends, then there's probably no crosswalk here.
for l in [turn.id.src, turn.id.dst] {
let road = map.get_parent(l);
if !road.crosswalk_forward || !road.crosswalk_backward {
turn.turn_type = TurnType::UnmarkedCrossing;
}
}
}
}