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Add building heights (#56)

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* Add better support for 3d buildings

Change key from "levels" to "building:levels" as the "levels" key is non-standard and sees much less use than "building:levels"

* Fix typo in sql definition and missing render_min_height

* Add render_height and min_height to building.yaml

* Simplify the render, switch numeric to int.

Assume min_height cannot be negative. There are a few examples in overpass, but can't show below ground anyways in mapbox (https://github.com/mapbox/mapbox-gl-js/issues/3456). Also don't attempt to fix min_height>height

* Remove colour as it is not currently used
This commit is contained in:
stirringhalo
2016-11-26 14:26:27 -05:00
committed by Lukas Martinelli
parent c769577c56
commit 373a28e7ad
3 changed files with 18 additions and 7 deletions
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6
layers/building/building.yaml
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@@ -5,10 +5,12 @@ layer:
this is welcomed.
buffer_size: 4
datasource:
query: (SELECT geom FROM layer_building(!bbox!, z(!scale_denominator!))) AS t
query: (SELECT geom, render_height, render_min_height FROM layer_building(!bbox!, z(!scale_denominator!))) AS t
fields:
render_height: |
An approximated height from levels and height of building after the method of Paul Norman in [OSM Clear](https://github.com/ClearTables/osm-clear). For future 3D rendering of buildings.
An approximated height from levels and height of the building or building:part after the method of Paul Norman in [OSM Clear](https://github.com/ClearTables/osm-clear). For future 3D rendering of buildings.
render_min_height: |
An approximated height from levels and height of the bottom of the building or building:part after the method of Paul Norman in [OSM Clear](https://github.com/ClearTables/osm-clear). For future 3D rendering of buildings.
schema:
- ./building.sql
datasources: