feat: add native road center lines

blender/generate_scene.py

@@ -799,11 +799,11 @@ def build(args):
             target = source["material_layer"]
             layer = material_layers[target]
             source_path = os.path.join(native_road_dir, "layers", source["source"] + ".geojson")
+            if not os.path.isfile(source_path):
+                raise RuntimeError("Native road layer is missing: " + source_path)
             count = _roads.assemble_geojson_layer(
                 source_path, source["source"], projector, roads_c,
                 road_mats[target], layer["z"])
-            if count == 0:
-                raise RuntimeError("Native road layer has no usable geometry: " + source_path)
             road_counts[source["source"]] = count
     elif geojson_dir and os.path.isdir(geojson_dir):
         for problem in catalog.check_layers(geojson_dir):

blender/osmassets/catalog.py

@@ -55,6 +55,7 @@ NATIVE_ROAD_LAYERS = (
     {"source": "intersection_surface", "material_layer": "intersection_surface"},
     {"source": "sidewalk_surface", "material_layer": "sidewalks"},
     {"source": "lane_separators", "material_layer": "lane_separators"},
+    {"source": "center_lines", "material_layer": "center_lines"},
     {"source": "direction_arrows", "material_layer": "lane_arrows_webscale"},
     {"source": "turn_arrows", "material_layer": "lane_arrows_webscale"},
     {"source": "crosswalks", "material_layer": "crosswalks"},

blender/tests/test_pure.py

@@ -53,7 +53,13 @@ class RoadLayerCatalogTest(unittest.TestCase):
              for entry in NATIVE_ROAD_LAYERS],
             [("road_surface", "road_surface"),
              ("intersection_surface", "intersection_surface"),
-             ("sidewalk_surface", "sidewalks")])
+             ("sidewalk_surface", "sidewalks"),
+             ("lane_separators", "lane_separators"),
+             ("center_lines", "center_lines"),
+             ("direction_arrows", "lane_arrows_webscale"),
+             ("turn_arrows", "lane_arrows_webscale"),
+             ("crosswalks", "crosswalks"),
+             ("vehicle_stop_lines", "vehicle_stop_lines")])
         self.assertTrue(all(entry["material_layer"] in layers
                             for entry in NATIVE_ROAD_LAYERS))