From 6cefc87b19824fe132faf88c1ae3eefd15a0b8de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Motiejus=20Jak=C5=A1tys?= <motiejus@jakstys.lt>
Date: Wed, 19 May 2021 22:57:48 +0300
Subject: [PATCH] selfcrossing-1-rev does not overlap

---
 mj-msc.tex | 2 +-
 tests.sql  | 4 ++--
 wm.sql     | 1 -
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/mj-msc.tex b/mj-msc.tex
index 164ddde..4c1affe 100644
--- a/mj-msc.tex
+++ b/mj-msc.tex
@@ -115,7 +115,7 @@ Given the discussed complexities, a fine line between under-generalization
 found. Therein lies the complexity of generalization algorithms: all have
 different trade-offs.
 
-\section{Literature review}
+\section{Literature review and problematic}
 \label{sec:literature-review}
 
 A number of cartographic line generalization algorithms have been researched.
diff --git a/tests.sql b/tests.sql
index 520c229..042e3b1 100644
--- a/tests.sql
+++ b/tests.sql
@@ -54,7 +54,7 @@ insert into wm_figures (name, way) values ('multi-island',ST_GeomFromText('MULTI
 
 -- TODO: there is a bug and it does not go through `self_crossing` function.
 insert into wm_figures (name, way) values ('selfcrossing-1',ST_GeomFromText('LINESTRING(-27 180,-20 166,-21 142,-18 136,55 136,55 136,71 145,44 165,37 146,22 145,14 164,11 164,3 146,-12 146,-13 176,-18 184)'));
-insert into wm_figures (name, way) values ('selfcrossing-1-rev',ST_Reverse(ST_Translate((select way from wm_figures where name='selfcrossing-1'), 60, 0)));
+insert into wm_figures (name, way) values ('selfcrossing-1-rev',ST_Reverse(ST_Translate((select way from wm_figures where name='selfcrossing-1'), 0, 60)));
 
 
 -- Run ST_SimplifyWM in debug mode, so `wm_debug` is populated. That table
@@ -170,7 +170,7 @@ begin
   perform assert_equals(
     selfcrossing1,
     (select st_astext(
-        st_translate(st_reverse(st_linemerge(st_union(way))), -60, 0)
+        st_translate(st_reverse(st_linemerge(st_union(way))), 0, -60)
     ) from (select unnest(vcrossings) way) a)
   );
 
diff --git a/wm.sql b/wm.sql
index ecb163a..871ee6a 100644
--- a/wm.sql
+++ b/wm.sql
@@ -475,7 +475,6 @@ begin
         );
       end if;
 
-
       bends = detect_bends(lines[i], dbgname, stagenum);
       bends = fix_gentle_inflections(bends, dbgname, stagenum);