[WIP] Add Overture land rendering

app/src/examples.json

@@ -55,6 +55,34 @@
     "center": [-122.2713, 37.8043],
     "zoom": 11
   },
+  {
+    "name": "oakland-hills-z14",
+    "description": "Area around Oakland hills",
+    "tags": ["oakland", "oakland-hills"],
+    "center": [-122.2119, 37.9001],
+    "zoom": 14
+  },
+  {
+    "name": "oakland-hills-z13",
+    "description": "Area around Oakland hills",
+    "tags": ["oakland", "oakland-hills"],
+    "center": [-122.2119, 37.9001],
+    "zoom": 13
+  },
+  {
+    "name": "oakland-hills-z12",
+    "description": "Area around Oakland hills",
+    "tags": ["oakland", "oakland-hills"],
+    "center": [-122.2119, 37.9001],
+    "zoom": 12
+  },
+  {
+    "name": "oakland-hills-z11",
+    "description": "Area around Oakland hills",
+    "tags": ["oakland", "oakland-hills"],
+    "center": [-122.2119, 37.9001],
+    "zoom": 11
+  },
   {
     "name": "oakland-airport-z15",
     "description": "Area around Oakland Airport terminals",

tiles/src/main/java/com/protomaps/basemap/layers/Earth.java

@@ -78,8 +78,9 @@ public void processOsm(SourceFeature sf, FeatureCollector features) {
   public void processOverture(SourceFeature sf, FeatureCollector features) {
     String type = sf.getString("type");
 
-    // Filter by type field - Overture base theme land
-    if (!"land".equals(type)) {
+    // Filter by type field - Overture base theme land, subtype land only
+    // Other subtypes (forest, grass, shrub, wetland, rock, sand, ice) go to Landuse
+    if (!"land".equals(type) || !"land".equals(sf.getString("subtype"))) {
       return;
     }
 

tiles/src/main/java/com/protomaps/basemap/layers/Landuse.java

@@ -262,6 +262,28 @@ public void processOverture(SourceFeature sf, FeatureCollector features) {
       return;
     }
 
+    if ("land".equals(sf.getString("type"))) {
+      String landClass = sf.getString("class");
+      String kind = switch (landClass) {
+        case "wood", "forest" -> "wood";
+        case "grassland", "grass", "meadow", "fell" -> "grassland";
+        case "scrub", "heath", "shrub", "shrubbery" -> "scrub";
+        case "wetland" -> "wetland";
+        case "bare_rock", "scree", "stone", "rock", "shingle" -> "bare_rock";
+        case "beach" -> "beach";
+        case "sand" -> "sand";
+        default -> null;
+      };
+      if (kind != null && sf.canBePolygon()) {
+        features.polygon(LAYER_NAME)
+          .setAttr("kind", kind)
+          .setAttr("sort_rank", 189)
+          .setZoomRange(7, 15)
+          .setMinPixelSize(2.0);
+      }
+      return;
+    }
+
     if (/* !"land_cover".equals(sf.getString("type")) && */ !"land_use".equals(sf.getString("type"))) {
       return;
     }

tiles/src/test/java/com/protomaps/basemap/layers/LanduseTest.java

@@ -255,6 +255,69 @@ void testFromTagNatural() {
     );
   }
 
+  @Test
+  void testOvertureLand() {
+    // forest subtype, wood class → wood kind
+    // d3377708-0909-3bad-93a0-bccf36a3da6b
+    assertFeatures(15,
+      List.of(Map.of("kind", "wood")),
+      process(SimpleFeature.create(
+        newPolygon(0, 0, 0, 1, 1, 1, 0, 0),
+        new HashMap<>(Map.of("id", "d3377708-0909-3bad-93a0-bccf36a3da6b",
+          "theme", "base", "type", "land", "subtype", "forest", "class", "wood")),
+        "pm:overture", null, 0)));
+
+    // grass subtype, grassland class → grassland kind
+    // 553b0479-ef8d-3e61-8160-193422ebc844
+    assertFeatures(15,
+      List.of(Map.of("kind", "grassland")),
+      process(SimpleFeature.create(
+        newPolygon(0, 0, 0, 1, 1, 1, 0, 0),
+        new HashMap<>(Map.of("id", "553b0479-ef8d-3e61-8160-193422ebc844",
+          "theme", "base", "type", "land", "subtype", "grass", "class", "grassland")),
+        "pm:overture", null, 0)));
+
+    // shrub subtype, scrub class → scrub kind
+    // f7254ef8-2649-31e4-9906-1a775dbde15b
+    assertFeatures(15,
+      List.of(Map.of("kind", "scrub")),
+      process(SimpleFeature.create(
+        newPolygon(0, 0, 0, 1, 1, 1, 0, 0),
+        new HashMap<>(Map.of("id", "f7254ef8-2649-31e4-9906-1a775dbde15b",
+          "theme", "base", "type", "land", "subtype", "shrub", "class", "scrub")),
+        "pm:overture", null, 0)));
+
+    // wetland subtype → wetland kind
+    // 4d48560e-025b-39fd-b8f3-cd063b166121
+    assertFeatures(15,
+      List.of(Map.of("kind", "wetland")),
+      process(SimpleFeature.create(
+        newPolygon(0, 0, 0, 1, 1, 1, 0, 0),
+        new HashMap<>(Map.of("id", "4d48560e-025b-39fd-b8f3-cd063b166121",
+          "theme", "base", "type", "land", "subtype", "wetland", "class", "wetland")),
+        "pm:overture", null, 0)));
+
+    // rock subtype, bare_rock class → bare_rock kind
+    // e3d2b715-397f-34c3-b534-380dbb732b7b
+    assertFeatures(15,
+      List.of(Map.of("kind", "bare_rock")),
+      process(SimpleFeature.create(
+        newPolygon(0, 0, 0, 1, 1, 1, 0, 0),
+        new HashMap<>(Map.of("id", "e3d2b715-397f-34c3-b534-380dbb732b7b",
+          "theme", "base", "type", "land", "subtype", "rock", "class", "bare_rock")),
+        "pm:overture", null, 0)));
+
+    // sand subtype, beach class → beach kind
+    // 78640854-7fdf-36a8-b512-423f41814db8
+    assertFeatures(15,
+      List.of(Map.of("kind", "beach")),
+      process(SimpleFeature.create(
+        newPolygon(0, 0, 0, 1, 1, 1, 0, 0),
+        new HashMap<>(Map.of("id", "78640854-7fdf-36a8-b512-423f41814db8",
+          "theme", "base", "type", "land", "subtype", "sand", "class", "beach")),
+        "pm:overture", null, 0)));
+  }
+
   @Test
   void testFromTagHighway() {
     assertFeatures(15,