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Support motorway highway labels for lower zooms

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This commit is contained in:
lukasmartinelli
2016-10-25 17:46:20 +02:00
parent c85f60ff50
commit eecb853a60
3 changed files with 45 additions and 10 deletions
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24
layers/highway_name/layer.sql
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@@ -1,15 +1,27 @@
CREATE OR REPLACE FUNCTION layer_highway_name(bbox geometry, zoom_level integer)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, class highway_class, subclass text) AS $$
SELECT osm_id, geometry, name, to_highway_class(highway) AS class, highway AS subclass FROM (
SELECT * FROM osm_highway_name_linestring
WHERE zoom_level = 12 AND to_highway_class(highway) < 'minor_road'::highway_class AND NOT highway_is_link(highway)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, ref text, class highway_class, subclass text) AS $$
SELECT osm_id, geometry, name, ref, to_highway_class(highway) AS class, highway AS subclass FROM (
SELECT * FROM osm_highway_name_linestring_gen3
WHERE zoom_level = 8
UNION ALL
SELECT * FROM osm_highway_name_linestring_gen2
WHERE zoom_level = 9
UNION ALL
SELECT * FROM osm_highway_name_linestring_gen1
WHERE zoom_level BETWEEN 10 AND 11
UNION ALL
SELECT * FROM osm_highway_name_linestring
WHERE zoom_level = 13 AND to_highway_class(highway) < 'path'::highway_class
WHERE zoom_level = 12
AND to_highway_class(highway) < 'minor_road'::highway_class
AND NOT highway_is_link(highway)
UNION ALL
SELECT * FROM osm_highway_name_linestring
WHERE zoom_level = 13
AND to_highway_class(highway) < 'path'::highway_class
UNION ALL
SELECT * FROM osm_highway_name_linestring
WHERE zoom_level >= 14
) AS zoom_levels
WHERE geometry && bbox
WHERE geometry && bbox AND LineLabel(zoom_level, COALESCE(NULLIF(name, ''), ref), geometry)
ORDER BY z_order ASC;
$$ LANGUAGE SQL IMMUTABLE;