Opened 10 years ago

Closed 8 years ago

#2321 closed defect (fixed)

Bridges over bridges

Reported by: David Earl Owned by: mapnik-team@…
Priority: minor Milestone:
Component: mapnik Version:
Keywords: Cc:

Description

A bridge crossing another bridge does not render correctly.

Two example cases (which may be different problems):

  1. http://www.openstreetmap.org/?lat=52.329616&lon=-0.192356&zoom=17&layers=B000FTFTTTT&mlat=52.32974&mlon=-0.19236

The A14 is layer 2 (both parts), the B road is layer 1 and the railway is implicitly layer 0. The casement on the A14 forms a cross with the B road (both times), rather than continuing across the bridge cutting across the B road (for reference, osmarender does this correctly)

  1. http://www.openstreetmap.org/?lat=52.2201435&lon=0.156417&zoom=18&layers=B000FTFTTTT&mlat=52.22002&mlon=0.15641

The river(bank) is layer 0 implicitly, the cycleway is a bridge out over the river on layer 1 and the railway crosses the cycleway and the river on layer 2. But the cycleway is rendered *over* the railway. (The tagging is correct - here's a picture of the situation: http://cambridge.cyclestreets.net/location/10368/).

Change History (2)

comment:1 Changed 10 years ago by Ldp

Yep, plenty of examples in previous tickets.

It's known, it's being worked on, but it's tricky and requires a good overall solution.

comment:2 Changed 8 years ago by Ldp

Resolution: fixed
Status: newclosed

(In r26009)

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