[Tile-serving] [openstreetmap/osm2pgsql] Refactor expire by geometry code (PR #1809)

[Jochen Topf]

@joto commented on this pull request.



> -            }
+void expire_tiles::from_geometry(geom::polygon_t const &geom)
+{
+    geom::box_t const box = geom::envelope(geom);
+    if (from_bbox(box)) {
+        /* Bounding box too big - just expire tiles on the boundary */
+        from_polygon_boundary(geom);
+    }
+}
+
+void expire_tiles::from_geometry(geom::multipolygon_t const &geom)
+{
+    geom::box_t box;
+    for (auto const &sgeom : geom) {
+        box.extend(sgeom.outer());
+    }

Yes, I missed that one. Changed.

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