Proof of concept of ocean from static file

project.yaml

@@ -27,7 +27,7 @@ _parts:
   extents84: &extents84
     extent: *world
     srs-name: "WGS84"
-    srs: "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"
+    srs: "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +over"
   osm2pgsql: &osm2pgsql
     type: "postgis"
     dbname: "gis"
@@ -101,6 +101,18 @@ Layer:
       minzoom: 1
       maxzoom: 3
     advanced: {}
+  - id: "ocean-text"
+    name: "ocean-text"
+    class: ""
+    geometry: "linestring"
+    <<: *extents84
+    Datasource:
+      file: "static/ocean.geojson"
+      type: "geojson"
+    properties:
+      minzoom: 1
+      maxzoom: 8
+    advanced: {}
   - id: "landcover-low-zoom"
     name: "landcover-low-zoom"
     class: ""

static/README.md

@@ -0,0 +1,11 @@
+# Static data
+
+This directory is for static data that is part of OpenStreetMap Carto
+
+## sea.geojson
+
+Hand-placed labels for oceans and major seas. Some data is derived from OpenStreetMap `place=sea` data and other is hand-placed.
+
+Features crossing 180 degrees need to be repeated for each the west and east side of the map.
+
+Data is licensed under the [ODbL](http://opendatacommons.org/licenses/odbl/). Copyright Paul Norman and [OpenStreetMap contributors](http://www.openstreetmap.org/copyright).

static/ocean.geojson

@@ -0,0 +1,151 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "geometry": {
+        "coordinates": [-150, 0],
+        "type": "Point"
+      },
+      "properties": {
+        "maxzoom": 3,
+        "minzoom": 1,
+        "name": "Pacific\nOcean",
+        "size": "bigger"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [-40, 25],
+        "type": "Point"
+      },
+      "properties": {
+        "maxzoom": 3,
+        "minzoom": 1,
+        "name": "Atlantic\nOcean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [75, -20],
+        "type": "Point"
+      },
+      "properties": {
+        "minzoom": 1,
+        "maxzoom": 4,
+        "name": "Indian\nOcean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [-180, 80],
+        "type": "Point"
+      },
+      "properties": {
+        "minzoom": 1,
+        "maxzoom": 2,
+        "name": "Arctic Ocean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [180, 80],
+        "type": "Point"
+      },
+      "properties": {
+        "minzoom": 1,
+        "maxzoom": 2,
+        "name": "Arctic Ocean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [
+          [160, 77],
+          [190, 75],
+          [220, 77]
+        ],
+        "type": "LineString"
+      },
+      "properties": {
+        "minzoom": 2,
+        "maxzoom": 3,
+        "name": "Arctic Ocean",
+        "size": "big"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [
+          [-200, 77],
+          [-170, 75],
+          [-140, 77]
+        ],
+        "type": "LineString"
+      },
+      "properties": {
+        "minzoom": 2,
+        "maxzoom": 3,
+        "name": "Arctic Ocean",
+        "size": "big"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [
+          [5, 81],
+          [65, 83]
+        ],
+        "type": "LineString"
+      },
+      "properties": {
+        "minzoom": 2,
+        "maxzoom": 3,
+        "name": "Arctic Ocean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [-5, -60],
+        "type": "Point"
+      },
+      "properties": {
+        "maxzoom": 3,
+        "minzoom": 1,
+        "name": "Southern Ocean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [-160, -65],
+        "type": "Point"
+      },
+      "properties": {
+        "maxzoom": 3,
+        "minzoom": 2,
+        "name": "Southern Ocean"
+      },
+      "type": "Feature"
+    },
+    {
+      "geometry": {
+        "coordinates": [200, -65],
+        "type": "Point"
+      },
+      "properties": {
+        "maxzoom": 3,
+        "minzoom": 2,
+        "name": "Southern Ocean"
+      },
+      "type": "Feature"
+    }
+  ]
+}

water.mss

@@ -295,3 +295,51 @@
     }
   }
 }
+
+#ocean-text {
+  [zoom >= 1][minzoom = 1],
+  [zoom >= 2][minzoom = 2],
+  [zoom >= 3][minzoom = 3],
+  [zoom >= 4][minzoom = 4],
+  [minzoom=null] {
+    [zoom < 1][maxzoom = 1],
+    [zoom < 2][maxzoom = 2],
+    [zoom < 3][maxzoom = 3],
+    [zoom < 4][maxzoom = 4],
+    [maxzoom=null] {
+      text-name: "[name]";
+      // These are all large areas, so they get labeled with larger than normal labels
+      text-size: 15;
+      [size = 'big'] {
+        text-size: 18;
+      }
+      [size = 'bigger'] {
+        text-size: 24;
+      }
+      [zoom >= 2]{
+        text-size: 18;
+        [size = 'big'] {
+          text-size: 24;
+        }
+        [size = 'bigger'] {
+          text-size: 28;
+        }
+      }
+      text-fill: @water-text;
+      text-face-name: @landcover-face-name;
+      text-halo-radius: @standard-halo-radius;
+      text-halo-fill: @standard-halo-fill;
+      text-placement: interior;
+      ['mapnik::geometry_type'=2] {
+        text-placement: line;
+        text-smooth: 1;
+        // Debugging code
+        /*
+        line-color: red;
+        line-width: 1;
+        line-smooth: 1;
+        */
+      }
+    }
+  }
+}