[Performance] List of issues and optimizations

[jfranmatheu]

There are several issues in performance that can be improved. This issue will be a major task with different sub-tasks on what actions over what issues can be taken to improve performance of RF.

Changes and tests are uploaded to the v3-performance branch: https://github.com/CGCookie/retopoflow/tree/v3-performance

Performance Issues

1. Inefficient Tool Initialization - #1424

Commits:

• [Skip tools compute on RF startup] f43b9cb

2. Event System and Redundant Callback Executions - #1429

Commits:

• None

3. Slow visible geometry compute - #1427

Commits:

• [Minor changes] 2721ab8
• [Cython & Alt method] 2b95058

4. Accel2D initialization bottleneck - #1428

Commits:

• [Remove Accel2D initialization bottlenecks] 0d08568

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Notes

• Points 3 and 4 may not present a big issue for Linux users as performance might be better.

[jlampel]

Wow, thank you for digging into this! Even small improvements here would be very welcome for v3 users. I'm looking forward to testing these changes as you tackle each section.