[Qgis-psc] QGIS Grant Report: QEP #236

[Loïc Bartoletti]

Dear PSC,

I am writing to provide an update on the current status of our work 
regarding QEP #236 implementation. As per our discussions and the 
proposed timeline, I'd like to outline our progress and the steps taken 
so far.

Time Allocation:
The allocated time funded by QGIS has been effectively utilized, and we 
are continuing with our allocated resources.

Overall Progress:
I am pleased to report that we have made significant strides in 
advancing the objectives outlined in the QEP. Our efforts are primarily 
focused on two main aspects of the proposal.

1. Unification of Algorithms:
This component entails both refactoring existing algorithms and 
introducing new ones. While the refactoring phase did not reach the 
level of ambition initially envisioned, considerable cleanup has been 
achieved, particularly in eliminating code duplications, as evidenced by 
the PR submitted [1] [2] [3]. Other deduplications could be considered, 
but the main issue is not to break the small optimizations or 
adaptations to the logic of the existing code.

2. Integration of Geometry Checker Algorithms:
Following the discussions within the QEP framework, we have decided to 
transition algorithms to those already present in the geometry checker. 
These algorithms encompass topological considerations. Unfortunately, 
due to timing constraints with the year-end and the feature freeze 
period, this integration was not yet completed.

Processing Integration:
Efforts have been made to incorporate the geometry checker's algorithms 
into the processing framework [6] [7] [8]. Regrettably, these efforts 
have not yet been fully realized. We encountered challenges in aligning 
processing with the logic of the geometry checker. However, the ongoing 
PR by Jacky shows promising progress in overcoming these obstacles. We 
are optimistic about achieving the integration of geometry (and 
topology) checker algorithms into processing for the upcoming version. 
This integration aims to streamline ETL processes for verification and 
correction tasks, thereby enhancing codebase cleanliness.

While there have been challenges and delays along the way, we remain 
committed to delivering the proposed enhancements outlined in the QEP.

Best regards,

[1] https://github.com/qgis/QGIS/pull/55000
[2] https://github.com/qgis/QGIS/pull/56130
[3] https://github.com/qgis/QGIS/pull/55619
[4] https://github.com/qgis/QGIS/pull/55625
[5] https://github.com/qgis/QGIS/pull/55648
[6] https://github.com/qgis/QGIS/pull/55552
[7] https://github.com/qgis/QGIS/pull/55590
[8] https://github.com/qgis/QGIS/pull/55939