stud

commit 3286890f52b4c48e35064201fe6683e2382624fa (tree)
parent c2c883335cc5cb94cb7269a0af7f97e5647a4fc5
Author: Motiejus Jakštys <motiejus@uber.com>
Date:   Fri, 26 Feb 2021 16:12:45 +0200

add safety check

Diffstat:
M
IV/wm.sql
 | 
3
+++

1 file changed, 3 insertions(+), 0 deletions(-)
diff --git a/IV/wm.sql b/IV/wm.sql
@@ -117,6 +117,9 @@ begin
         select geom from st_dumppoints(bends[i]) order by path[1] asc limit 3
       ) into phead;
 
+      -- if the bend got too short, stop processing it
+      exit when array_length(phead, 1) < 3;
+
       -- if inflection angle between ptail[1:3] "large", stop processing this bend
       exit when abs(st_angle(phead[1], phead[2], phead[3]) - pi) > small_angle;