Isolate space from transformations

[ffreyer]

Description

Closes #3796

This pr removes space from transformations and adds more convenience inputs to the transformation attribute, as suggested in #4750.

The goal of this is to give space a clear and well defined scope - that of "projections", i.e. coordinate spaces that could be handled by a camera. "Transformations", i.e. the model matrix and transform function (or scale in Axis) are completely cut off from space here. They would instead be handled through the transformation attribute which now accepts:

• automatic, :auto, :automatic: inherit transformations from parent based on space compatibility
• :inherit: inherit transformations regardless of space compatibility
• :inherit_model: inherit just the model matrix (i.e. rotate!(), scale!(), translate!()) regardless of space compatibility
• :inherit_transform_func, :inherit_transform_function: inherit just transform function regardless of space compatibility
• nothing, identity, :nothing, :identity: no inheritance, create new identity transformation

Previous options such as an explicit Transformation() and arguments for transform() (e.g. :xy, (translate = (1,2,3),)) continue to work. The latter assumes automatic for the inheritance setting. (inheritance_option, transform_arg) is currently also allowed.

TODO:

• test transformation inheritance options
• rename space = :data to :world currently vetod by Simon
• check/update/add space related tests
• document/update space documentation
• update conversion/transform/projection pipeline docs
  • clean up TODO in those docs
  • fix nested list
• document transformation attribute
• document transform!() functions
• document spaces()
• check/update other space related docstrings (e.g. boundingbox, project, ...?)
• consider updating interface for functions other than plots (e.g. project(), mouseposition(), boundingbox(), position_on_plot(), ...) (this may be a lot of not strictly required work better suited for other prs)

Tangential changes:

• added convenience methods for is_..._space() to work with Observable and plot inputs
• cleaned up space handling to rely on is_..._space() more and assume plot.space exists when it should (i.e. for primitive plots mostly in backends)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• Added an entry in CHANGELOG.md (for new features and breaking changes)
• Added or changed relevant sections in the documentation
• Added unit tests for new algorithms, conversion methods, etc.
• Added reference image tests for new plotting functions, recipes, visual options, etc.

[MakieBot]

Benchmark Results

SHA: e1b45fa1352c31dc0978cca2ec1e20f1217f6652

Warning

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