Not finalized and missing some icons, but here's a peek! Using it is sooo nice! :sogood:
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The graph is populated similar to how the dopesheet works, with the addition of visibility dots that allow you to control which items are visible in the graph.
When sync is enabled the dopesheet automatically shows the keys for the curves that the graph is showing. Also if the dopesheet and graph are above/below each other then sync zooms the dopesheet to match the graph and vice versa, so the keys match up vertically.
The "retime" options are about how the Bezier handles are adjusted when keys are moved. The Frame
button zooms the graph so the curves are visible and Auto
does that automatically, which is usually what you want.