add daylight landcover to tileset [#154]

* Use geopackage mirror of daylight dataset from https://daylightmap.org/2023/10/11/landcover.html
* remap daylight classes to tilezen-like kinds

Author: bdon

tiles/src/main/java/com/protomaps/basemap/Basemap.java

@@ -9,6 +9,7 @@
 import com.protomaps.basemap.layers.Buildings;
 import com.protomaps.basemap.layers.Earth;
 import com.protomaps.basemap.layers.Landuse;
+import com.protomaps.basemap.layers.Landcover;
 import com.protomaps.basemap.layers.Natural;
 import com.protomaps.basemap.layers.PhysicalLine;
 import com.protomaps.basemap.layers.PhysicalPoint;
@@ -37,6 +38,10 @@ public Basemap(NaturalEarthDb naturalEarthDb, QrankDb qrankDb) {
     registerHandler(landuse);
     registerSourceHandler("osm", landuse);
 
+    var landcover = new Landcover();
+    registerHandler(landcover);
+    registerSourceHandler("landcover", landcover::processLandcover);
+
     var natural = new Natural();
     registerHandler(natural);
     registerSourceHandler("osm", natural);
@@ -127,7 +132,8 @@ static void run(Arguments args) throws Exception {
       .addShapefileSource("osm_water", sourcesDir.resolve("water-polygons-split-3857.zip"),
         "https://osmdata.openstreetmap.de/download/water-polygons-split-3857.zip")
       .addShapefileSource("osm_land", sourcesDir.resolve("land-polygons-split-3857.zip"),
-        "https://osmdata.openstreetmap.de/download/land-polygons-split-3857.zip");
+        "https://osmdata.openstreetmap.de/download/land-polygons-split-3857.zip")
+      .addGeoPackageSource("landcover", sourcesDir.resolve("daylight-landcover.gpkg"), "https://r2-public.protomaps.com/datasets/daylight-landcover.gpkg");
 
     //    Downloader.create(planetiler.config()).add("ne", neUrl, nePath)
     //      .add("qrank", "https://qrank.wmcloud.org/download/qrank.csv.gz", sourcesDir.resolve("qrank.csv.gz")).run();

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

@@ -0,0 +1,40 @@
+package com.protomaps.basemap.layers;
+
+import com.onthegomap.planetiler.FeatureCollector;
+import com.onthegomap.planetiler.ForwardingProfile;
+import com.onthegomap.planetiler.VectorTile;
+import com.onthegomap.planetiler.geo.GeometryException;
+import com.onthegomap.planetiler.reader.SourceFeature;
+import com.protomaps.basemap.feature.FeatureId;
+
+import java.util.List;
+
+public class Landcover implements ForwardingProfile.FeaturePostProcessor {
+
+  public void processLandcover(SourceFeature sf, FeatureCollector features) {
+    String kind = sf.getString("class");
+    if (kind.equals("urban")) kind = "urban_area";
+    if (kind.equals("crop")) kind = "farmland";
+    if (kind.equals("grass")) kind = "grassland";
+    if (kind.equals("trees")) kind = "forest";
+    if (kind.equals("snow")) kind = "glacier";
+    if (kind.equals("shrub")) kind = "scrub";
+    // barren is passed through
+
+    features.polygon(this.name())
+      .setId(FeatureId.create(sf))
+      .setAttr("pmap:kind", kind)
+      .setZoomRange(0, 7)
+      .setMinPixelSize(0.0);
+  }
+
+  @Override
+  public String name() {
+    return "landcover";
+  }
+
+  @Override
+  public List<VectorTile.Feature> postProcess(int zoom, List<VectorTile.Feature> items) throws GeometryException {
+    return items;
+  }
+}