wm

commit 1224fddcecf8359ff559cd9f5fcb6e7d698ae1ea (tree)
parent 671a680277b33fa84b64f6a985893f5d084b609b
Author: Motiejus Jakštys <motiejus@jakstys.lt>
Date:   Wed, 19 May 2021 22:57:45 +0300

add fig5

Diffstat:
M
tests.sql
 | 
1
+
M
wm.sql
 | 
12
++++++++----

2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/tests.sql b/tests.sql
@@ -15,6 +15,7 @@ drop table if exists figures;
 create table figures (name text, way geometry);
 insert into figures (name, way) values ('fig3', ST_GeomFromText('LINESTRING(0 0, 12 0, 13 4, 20 2, 20 0, 32 0, 33 10, 38 16, 43 15, 44 10, 44 0, 60 0)'));
 insert into figures (name, way) values ('fig3-1', ST_GeomFromText('LINESTRING(0 0, 12 0, 13 4, 20 2, 20 0, 32 0, 33 10, 38 16, 43 15, 44 10, 44 0)'));
+insert into figures (name, way) values ('fig5', ST_GeomFromText('LINESTRING(0 39,19 52,27 77,26 104,41 115,49 115,65 103,65 75,53 45,63 15,91 0,91 0)'));
 
 do $$
 begin
diff --git a/wm.sql b/wm.sql
@@ -1,11 +1,8 @@
 \set ON_ERROR_STOP on
 SET plpgsql.extra_errors TO 'all';
 
+-- detect_bends detects bends using the inflection angles. It does not do corrections.
 create or replace function detect_bends(line geometry) returns table(bend geometry) as $$
-/* for each bend, should return:
-   - size (area)
-   - shape (cmp, compactness index)
-*/
 declare
   pi real;
   p geometry;
@@ -45,3 +42,10 @@ begin
   end if;
 end
 $$ language plpgsql;
+
+
+-- fix_gentle_inflections moves bend endpoints in case of gentle inflections
+create or replace function fix_gentle_inflections(line geometry) returns table(bend geometry) as $$
+begin
+end
+$$ language plpgsql;