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Externalizing polygon shard detection (#146)

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* Start of externalizing polygon shard detection

* Completely untested external quicksort

* Add unit test for external quicksort

* Remember to clean up temporary files

* Sort and scan the vertices

* Bring over more vertex logic

* Make nodes from vertices

* Checkpoint on switching over to global shared nodes

* Do the thing

* Revert unintended change to coalesced linestring behavior

* Take shared nodes into account in early simplification

* Let it do more sorting in memory

* Fix overnoding of collinear linestrings

* Remove duplicate nodes, since only duplicate vertices now matter

* Remember to delete temporary files

* Fix out of bounds memory access below, apparently

* Fix the actual undefined behavior

* Still running out of memory in one case. Find out where.

* Forgot the conditional

* Try again to make it not run out of memory

* Update version and changelog
This commit is contained in:
Erica Fischer
2023-10-03 10:53:12 -07:00
committed by GitHub
parent dcc3a11915
commit 26bf08deb2
18 changed files with 713 additions and 230 deletions
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CHANGELOG.md
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# 2.33.0
* Further reduce memory usage of --no-simplification-of-shared-nodes by calculating the list of shared nodes globally using temporary files rather than in memory for each individual tile
* Make --no-simplification-of-shared-nodes behave for LineStrings as it does for Polygons, preventing simplification only at crossings, convergences, and divergences, not at every point along collinear segments
# 2.32.1
* Reduce memory usage of --no-simplification-of-shared-nodes for polygons