add wm_rivers_50 and wm_rivers_250 to wm_visuals

visuals.sql

@@ -66,18 +66,23 @@ begin
 end $$ language plpgsql;
 
 
-delete from wm_debug where name like 'salvis%';
-delete from wm_visuals where name like 'salvis%';
-insert into wm_visuals(name, way) values('salvis', (
+drop function if exists wm_salvisbbox;
+create function wm_salvisbbox(
+  geom geometry,
+  scaledwidth float
+) returns geometry as $$
+declare
+  ret geometry;
+begin
   with multismall as (
     select st_intersection(
-        (select st_union(way) from wm_rivers where name in ('Šalčia', 'Visinčia')),
+      st_union(geom),
       wm_bbox(
         st_closestpoint(
           (select way from wm_rivers where name='Šalčia'),
           (select way from wm_rivers where name='Visinčia')
         ),
-          :scaledwidth
+        scaledwidth
       )
     ) ways
   )
@@ -86,7 +91,32 @@ insert into wm_visuals(name, way) values('salvis', (
   select st_union(a.geom)
   from st_dump((select ways from multismall)) a
   where st_length(a.geom) >= 100
-));
+  into ret;
+
+  return ret;
+end $$ language plpgsql;
+
+delete from wm_debug where name like 'salvis%';
+delete from wm_visuals where name like 'salvis%';
+insert into wm_visuals(name, way) values
+  ('salvis', (
+    wm_salvisbbox(
+      (select st_union(way) from wm_rivers where name in ('Šalčia', 'Visinčia')),
+      :scaledwidth
+    )
+  )),
+  ('salvis-50', (
+    wm_salvisbbox(
+      (select st_union(way) from wm_rivers_50 where name in ('Šalčia', 'Visinčia')),
+      :scaledwidth
+    )
+  )),
+  ('salvis-250', (
+    wm_salvisbbox(
+      (select st_union(way) from wm_rivers_250 where name in ('Šalčia', 'Visinčia')),
+      :scaledwidth
+    )
+  ));
 
 do $$
 declare