First render of CLPC

[Phyks]

To be improved, this is a very draft first version to fix #4. This is only considering full relations (including all from, to and via members). Incomplete relations are unusable.

Examples:

https://www.openstreetmap.org/relation/10780842

https://www.openstreetmap.org/relation/7506921

I could not yet test it with a left turn.

TODO (any help welcomed! :):

• Draw better icons, these "M12 signs" are barely readable at tiny scale.
• Improve positionning strategy of the sign.

[brainwad]

I have 2 suggestions on the readability of the icon: make the contents black instead of yellow, for better contrast; and remove the bicycle and enlarge the arrow to fill the whole triangle (this is already a bicycle-map, it should be obvious the sign applies to bicycles, unlike in the real world where all bicycle-specific signs need a bicycle drawn on them to not confuse car drivers).

[Phyks]

Here is an improved version, much more readable.

@Florimondable If you think this render is good enough, I would be in favor of merging it and iterating from there, based on users' feedback.

[Florimondable]

Grey board instead of its red outline. Like trafic light.

The arrow in the first picture seems not aligned with the triangle (not parallèle with one side of the triangle).

I'm now in favor of tagging the board itself (without relation), but that's an other story.

[Phyks]

[Phyks]

@Florimondable I've just realized we have multiple grey tones. Note that the healthcare icon grey (#444) is different from the traffic light grey (#545454).

[Florimondable]

@Florimondable I've just realized we have multiple grey tones. Note that the healthcare icon grey (#444) is different from the traffic light grey (#545454).

Yes, that's ok.

[Florimondable]

It's broken on my PC :
Postgis Plugin: ERROR: relation "planet_osm_rels" does not exist LINE 21: JOIN planet_osm_rels r ON ( ^ in executeQuery Full sql was: 'SELECT * FROM ( SELECT ST_Centroid( ST_Intersection( ST_Union(h1.way, h2.way), ST_Difference( ST_Buffer(ST_Intersection(h1.way, h2.way), 20), ST_Buffer(ST_Intersection(h1.way, h2.way), 10) ) ) ) AS way, CASE WHEN members[array_position(members, CONCAT('w', h1.osm_id)) + 1] = 'from' THEN cast(degrees(ST_Angle(h1.way, h2.way)) AS integer) ELSE cast(degrees(ST_Angle(h2.way, h1.way)) AS integer) END AS angle FROM planet_osm_line h1 JOIN planet_osm_line h2 ON ST_Intersects(h1.way, h2.way) JOIN planet_osm_rels r ON ( parts @> array[h1.osm_id, h2.osm_id] AND r.tags @> array['type','restriction','restriction:bicycle','give_way'] ) WHERE h1.way && ST_SetSRID('BOX3D(-3.402823466385289e+38 -3.402823466385289e+38,3.402823466385289e+38 3.402823466385289e+38)'::box3d, 3857) AND h2.way && ST_SetSRID('BOX3D(-3.402823466385289e+38 -3.402823466385289e+38,3.402823466385289e+38 3.402823466385289e+38)'::box3d, 3857) AND h1.highway IS NOT NULL AND h2.highway IS NOT NULL AND h1.osm_id > h2.osm_id ) AS data LIMIT 0' encountered during parsing of layer 'clpc' in Layer [httpserver] /cyclosm-cartocss-style/tile/16/34088/23903.png?t=1606678022451 500 Trace at ProjectServer.raise (/home/florimond/node_modules/kosmtik/src/back/ProjectServer.js:261:13) at /home/florimond/node_modules/kosmtik/src/back/ProjectServer.js:75:30 at /home/florimond/node_modules/generic-pool/lib/generic-pool.js:283:11 at loaded (/home/florimond/node_modules/mapnik-pool/index.js:23:37) Postgis Plugin: ERROR: relation "planet_osm_rels" does not exist LINE 21: JOIN planet_osm_rels r ON ( ^ in executeQuery Full sql was: 'SELECT * FROM ( SELECT ST_Centroid( ST_Intersection( ST_Union(h1.way, h2.way), ST_Difference( ST_Buffer(ST_Intersection(h1.way, h2.way), 20), ST_Buffer(ST_Intersection(h1.way, h2.way), 10) ) ) ) AS way, CASE WHEN members[array_position(members, CONCAT('w', h1.osm_id)) + 1] = 'from' THEN cast(degrees(ST_Angle(h1.way, h2.way)) AS integer) ELSE cast(degrees(ST_Angle(h2.way, h1.way)) AS integer) END AS angle FROM planet_osm_line h1 JOIN planet_osm_line h2 ON ST_Intersects(h1.way, h2.way) JOIN planet_osm_rels r ON ( parts @> array[h1.osm_id, h2.osm_id] AND r.tags @> array['type','restriction','restriction:bicycle','give_way'] ) WHERE h1.way && ST_SetSRID('BOX3D(-3.402823466385289e+38 -3.402823466385289e+38,3.402823466385289e+38 3.402823466385289e+38)'::box3d, 3857) AND h2.way && ST_SetSRID('BOX3D(-3.402823466385289e+38 -3.402823466385289e+38,3.402823466385289e+38 3.402823466385289e+38)'::box3d, 3857) AND h1.highway IS NOT NULL AND h2.highway IS NOT NULL AND h1.osm_id > h2.osm_id ) AS data LIMIT 0' encountered during parsing of layer 'clpc' in Layer

[Phyks]

I disabled the layer by default fbc1ef8. It should work now.

I make use of the planet_osm_rels table, which is created by osm2pgsql but is supposed to be somehow a temporary one, storing raw relations. This one might be deleted by users after db creation. (did you delete it?)

[Florimondable]

Thanks.
I just use : osm2pgsql -c -G --hstore -d osm $1

[Phyks]

Indeed, these tables are only created when --slim argument is passed. This argument makes osm2pgsql store data in temporary tables in the database, to ease updating (and is pretty standard if you have a live database). I added it in the docs eee7974.