motiejus/wm
1
Fork 0
Code Releases Activity

more visual inflection-1

Browse Source
This commit is contained in:
Motiejus Jakštys 2021-05-19 22:57:47 +03:00 committed by Motiejus Jakštys
parent ff1860da87
commit ef94a601c4
2 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
mj-msc.tex
View File

@ -312,7 +312,8 @@ and the distance is decreasing, the algorithm should keep going; practically
not having an upper bound on the number of iterations. not having an upper bound on the number of iterations.
Additional example, not found in the original paper, is illustrated in Additional example, not found in the original paper, is illustrated in
figure~\onpage{fig:inflection-1-gentle-inflection}: it moves a few vertices. figure~\ref{fig:inflection-1-gentle-inflection}, which moves two vertices
instead of one.
\begin{figure}[h] \begin{figure}[h]
\centering \centering

6
tests.sql
View File

@ -44,7 +44,7 @@ insert into wm_figures (name, way) values ('fig6-combi',
) )
); );
insert into wm_figures (name, way) values('fig8', ST_GeomFromText('LINESTRING(173 12,174 10,180 8,186 8,186 13,191 11,189 6,201 5,203 11,216 16,216 6,222 7,229 3,236 2,239 6,243 8,248 6)')); insert into wm_figures (name, way) values('fig8', ST_GeomFromText('LINESTRING(173 12,174 10,180 8,186 8,186 13,191 11,189 6,201 5,203 11,216 16,216 6,222 7,229 3,236 2,239 6,243 8,248 6)'));
insert into wm_figures (name, way) values ('inflection-1',ST_GeomFromText('LINESTRING(110 24,114 20,133 20,145 15,145 0,136 5,123 7,114 7,111 2)')); insert into wm_figures (name, way) values ('inflection-1',ST_GeomFromText('LINESTRING(110 24,114 20,133 20,145 15,145 0,136 8,123 10,114 10,111 2)'));
insert into wm_figures (name, way) values ('multi-island',ST_GeomFromText('MULTILINESTRING((-15 10,-10 10,-5 11,0 11,5 11,10 10,11 9,13 10,15 9),(-5 11,-2 15,0 16,2 15,5 11))')); insert into wm_figures (name, way) values ('multi-island',ST_GeomFromText('MULTILINESTRING((-15 10,-10 10,-5 11,0 11,5 11,10 10,11 9,13 10,15 9),(-5 11,-2 15,0 16,2 15,5 11))'));
-- Run ST_SimplifyWM in debug mode, so `wm_debug` is populated. That table -- Run ST_SimplifyWM in debug mode, so `wm_debug` is populated. That table
@ -82,8 +82,8 @@ begin
select array((select way from wm_debug where name='inflection-1' and stage='bbends')) into vbends; select array((select way from wm_debug where name='inflection-1' and stage='bbends')) into vbends;
select array((select way from wm_debug where name='inflection-1' and stage='cinflections')) into vinflections; select array((select way from wm_debug where name='inflection-1' and stage='cinflections')) into vinflections;
perform assert_equals(vbends[1], vinflections[1]); -- unchanged perform assert_equals(vbends[1], vinflections[1]); -- unchanged
perform assert_equals('LINESTRING(114 20,133 20,145 15,145 0,136 5,123 7,114 7)', st_astext(vinflections[2])); perform assert_equals('LINESTRING(114 20,133 20,145 15,145 0,136 8,123 10,114 10)', st_astext(vinflections[2]));
perform assert_equals('LINESTRING(123 7,114 7,111 2)', st_astext(vinflections[3])); perform assert_equals('LINESTRING(123 10,114 10,111 2)', st_astext(vinflections[3]));
end $$ language plpgsql; end $$ language plpgsql;
do $$ do $$