Opened 13 years ago
Closed 13 years ago
#982 closed defect (fixed)
ST_ChangeEdgeGeom doesn't let you change geometry of a closed edge
| Reported by: | strk | Owned by: | strk |
|---|---|---|---|
| Priority: | high | Milestone: | PostGIS 2.0.0 |
| Component: | topology | Version: | master |
| Keywords: | Cc: |
Description
Closed edges can't be changed by current ST_ChangeEdgeGeom as it'll find them always cross a node (the self-node). This is due to the DE-IM9 considering closed edges as having no boundary.
Attachments (2)
Change History (8)
comment:1 by , 13 years ago
comment:2 by , 13 years ago
| Priority: | medium → high |
|---|
comment:3 by , 13 years ago
It is even worst than I thought in that updating face linking and edge linking may also be needed for non-closed edges, when the new edge ends up in a different face. Funny enough, the SQL/MM specification do not consider that case at all !
by , 13 years ago
| Attachment: | before.png added |
|---|
by , 13 years ago
comment:5 by , 13 years ago
r9063 adds the possibility to change a closed edge.
Checking for correct linking (ring and faces) isn't implemented yet.
comment:6 by , 13 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
I've filed #1571 for the topology breaking issue. This specific issue (changing geom of closed edge) is fixed.
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This is harder than it looks as if direction of a closed edge is reversed then all linking informations should be updated: left_face/right_face of the edge itself and next_left_edge, next_right_edge of self _and_ adiacent edges !