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remove redundant commentary

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Motiejus Jakštys 2021-05-19 22:57:47 +03:00 committed by Motiejus Jakštys
parent b6b97852bb
commit 56c92b71d9
1 changed files with 0 additions and 10 deletions
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wm.sql
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@ -261,11 +261,6 @@ begin
-- self-crossing. now try to find another bend in this line that -- self-crossing. now try to find another bend in this line that
-- crosses an imaginary line of end-vertices -- crosses an imaginary line of end-vertices
-- To understand the block below, I suggest you take a pencil and paper,
-- draw a self-crossing bend (fig6 from the article works well), and
-- figure out what happens here, by hand. I know it's hard to follow.
-- Apologies.
-- go through each bend in the given line, and see if has a potential to -- go through each bend in the given line, and see if has a potential to
-- cross bends[i]. -- cross bends[i].
for j in 1..i-1 loop for j in 1..i-1 loop
@ -291,14 +286,9 @@ begin
continue when multi is null; continue when multi is null;
mutated = true; mutated = true;
-- To understand the block below, I suggest you take a pencil and paper,
-- draw a self-crossing bend (fig6 from the article works well), and
-- figure out what happens here, by hand. I know it's hard to follow.
-- Apologies.
-- remove last vertex of the previous bend, because the last -- remove last vertex of the previous bend, because the last
-- segment is duplicated with the i'th bend. -- segment is duplicated with the i'th bend.
bends[i-1] = st_removepoint(bends[i-1], st_npoints(bends[i-1])-1); bends[i-1] = st_removepoint(bends[i-1], st_npoints(bends[i-1])-1);
-- continue debugging the selfcrossing-1 here.
bends[i] = st_makeline( bends[i] = st_makeline(
st_pointn(bends[i], 1), st_pointn(bends[i], 1),
st_removepoint(st_geometryn(multi, st_numgeometries(multi)), 0) st_removepoint(st_geometryn(multi, st_numgeometries(multi)), 0)