We need to discuss the current state of the API, what is likely or unlikely to change. As of March 2025, fastplotlib is in the late-alpha state.

We think these will change little before a beta release, new features may be added but breaking changes will be rare:

• PlotArea and all its subclasses. - some things may change a bit after pygfx viewports/update modes refactor
  • includes subplots and docks
• Figure, except for the toolbars - some things may change a bit after pygfx viewports/update modes refactor
• Graphics and graphic properties, except for Graphic collections (such as LineCollection and LineStack)
• events on graphics
• ImageWidget

Not as solid:

• LineCollection still needs some tidying up, ex. cmaps and transforms

Moderate to heavy change:

• Selector tools
• Axes & Legends