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better estimation

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Motiejus Jakštys 2021-04-16 08:05:17 +03:00
parent 5f6a997e29
commit 79952c09c9
2 changed files with 9 additions and 2 deletions
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2
IV/tests-integration.sql
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@ -10,7 +10,7 @@ declare
begin begin
select * from ST_SimplifyWM_Estimate((select st_union(way) from agg_rivers)) into npoints, secs; select * from ST_SimplifyWM_Estimate((select st_union(way) from agg_rivers)) into npoints, secs;
raise notice 'Total points: %', npoints; raise notice 'Total points: %', npoints;
raise notice 'Expected duration: %s (+-%s), depending on bend complexity', ceil(secs), floor(secs*.5); raise notice 'Expected duration: %s (+-%s)', ceil(secs), floor(secs*.5);
end $$ language plpgsql; end $$ language plpgsql;
drop table if exists wm_demo; drop table if exists wm_demo;

9
IV/wm.sql
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@ -19,6 +19,7 @@ declare
prev_sign int4; prev_sign int4;
cur_sign int4; cur_sign int4;
l_type text; l_type text;
dbgpolygon geometry;
begin begin
l_type = st_geometrytype(line); l_type = st_geometrytype(line);
if l_type != 'ST_LineString' then if l_type != 'ST_LineString' then
@ -82,12 +83,18 @@ begin
i, i,
bends[i] bends[i]
); );
dbgpolygon = null;
if st_npoints(bends[i]) >= 3 then
dbgpolygon = st_makepolygon(st_addpoint(bends[i], st_startpoint(bends[i])));
end if;
insert into wm_debug(stage, name, gen, nbend, way) values( insert into wm_debug(stage, name, gen, nbend, way) values(
'bbends-polygon', 'bbends-polygon',
dbgname, dbgname,
dbgstagenum, dbgstagenum,
i, i,
st_makepolygon(st_addpoint(bends[i], st_startpoint(bends[i]))) dbgpolygon
); );
end loop; end loop;
end if; end if;