= ChimeraX Developer Meeting =

Attendance: Zach, Tom, Eric

April 1, 2024

= Agenda =

* Work in progress reports
* Update prereqs - most done.
* What ChimeraX 1.8 work/tickets should we prioritize for January?
* Worm ribbon implementation, ticket #9942
* Log slow to update when it gets long, Tristan ticket #9909
* Create Grafana dashboards to monitor web services.
* Make Chimera end-of-life bug report and registration changes for 1.18 release in Spring 2024.
* Back up the Chimera build machine to a solid state drive, Windows 7.
* ChimeraX Ideas milestone clean-up.

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= Discussion =

* ChimeraX builds
  - Build email is saying "Host key verification failed. fatal: Could not read from remote repository."
  - Not clear if this is fetching chimerax source or build tools from github or something the Linux singularity build is doing.
  - Greg can investigate later this week.

* Recap of last week's NIAID meeting
  - GLTF hierarchy
  - Lights in GLTF, bad colors when embedded in PowerPoint or Microsoft Word.
  - AlphaFold models in NIH 3D, what styles to output.
  - Vision Pro avatar demo from Andi, creepy.

* Alphafold prediction broke
  - Google Colab web page change broke sequence being sent by ChimeraX to Colab virtual machine.
  - Fixed but requires ChimeraX daily build.

* python_instances_of_class crashes
  - New ChimeraX crash resulting from garbage collection crash fix.
  - Eric has 200 line command script that reproduces it.
  - Involves sequences and sequence viewer must be shown.

* Volume raytracing
  - Zach says initial volume raytracing attempt too slow for interactive use.
  - Investigating how to speed it up.
  - Loic Royer wrote fast volume raytracer years ago, possibly called ClearVolume.  Might also be in Napari.

* Mac Intel build failure
  - Fails creating Info.plist because of new PDB-Redo fetch.
  - Error says mtz file format does not exist.
  - Fetch of mtz needs Clipper bundle from toolshed but during build the toolshed cache has not been loaded.
  - Eric looking into solutions.

* measure contactArea command
  - Chimera measure contactArea command not in ChimeraX and needed to make Chimera image gallery binding site image.
  - Krishnan from Biocryst asked about this in ChimeraX.
  - Tom may port the contact area command to ChimeraX.


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= Action Items =