WIP: Making colorize mask work with animation
On my todo list for this:
Basics:
- move coloringProjection keyframeChannel creation to mask constructor
- manage strokes keyframes with timeline
- new stroke should populate required keyframes
- have coloringProjection keyframes update to be union of src & strokes keyframes
Concerns:
- needs to work with save files
- needs to work with timeline refresh/caching
- needs to work with animation playback
- needs to convert to animated paint layer (any other layer types?)
- needs to work with copying, pasting, moving keyframes
Polish:
- When multiple frames are selected, colorize update should step through them