self-hosted/postgis
self-hosted/postgis
1
0
Fork 0
mirror of https://git.osgeo.org/gitea/postgis/postgis synced 2024-10-24 09:02:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add notes and TODO items about the edge-adding functions [RT-SIGTA]

Browse source 
See ticket #1205

git-svn-id: http://svn.osgeo.org/postgis/trunk@7882 b70326c6-7e19-0410-871a-916f4a2858ee
This commit is contained in:
Sandro Santilli 2011-09-22 09:14:43 +00:00
parent bfcbd7726f
commit 58ad643b69
1 changed files with 17 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
topology/sql/sqlmm.sql
View file

@ -3114,7 +3114,15 @@ BEGIN
newedge.edge_id, newedge.left_face;
-- Call topology.AddFace for every face containing the new edge
--
-- The ORDER serves predictability of which face is added first
-- TODO: order so to have the face on the _right_ side created first,
-- see http://trac.osgeo.org/postgis/ticket/1205
--
-- TODO: in presence of holes every hole would share a boundary
-- with its shell, research on improving performance by avoiding
-- the multiple scans.
--
FOR rec IN SELECT geom FROM ST_Dump(fan.post)
WHERE ST_Contains(
ST_Boundary(geom),
@ -3748,6 +3756,11 @@ BEGIN
newedge.edge_id, newedge.left_face;
-- Call topology.AddFace for every face whose boundary contains the new edge
--
-- TODO: in presence of holes every hole would share a boundary
-- with its shell, research on improving performance by avoiding
-- the multiple scans.
--
p1 = ST_StartPoint(newedge.cleangeom);
p2 = ST_PointN(newedge.cleangeom, 2);
FOR rec IN SELECT geom FROM ST_Dump(fan.post)
@ -3755,6 +3768,10 @@ BEGIN
ST_Boundary(geom),
ST_MakeLine(p1, p2)
)
--
-- TODO: order so to have the face on the _right_ side created first,
-- see http://trac.osgeo.org/postgis/ticket/1205
--
LOOP -- {
-- NOTE: the only difference with ST_AddEdgeNewFace here is