Turns out, it's more efficient to just use the bbox logic for empty mask calculations. We already track if if the bbox needs updating, so this calculation does minimal work.
The dedicated calculation wasn't able to use the bbox tracking so it ran far more often than the bbox calculation.
Removed the "fast" bbox calculation logic, bc the new logic means we are continually updating the bbox in the background - not only when the user switches to the move tool and/or selects a layer.
The bbox calculation logic is split out from the bbox rendering logic to support this.
Result - better perf overall, with the empty mask handling retained.
Mask vector data includes additive (brush, rect) shapes and subtractive (eraser) shapes. A different composite operation is used to draw a shape, depending on whether it is additive or subtractive.
This means that a mask may have vector objects, but once rendered, is _visually_ empty (fully transparent). The only way determine if a mask is visually empty is to render it and check every pixel.
When we generate and save layer metadata, these fully erased masks are still used. Generating with an empty mask is a no-op in the backend, so we want to avoid this and not pollute graphs/metadata.
Previously, we did that pixel-based when calculating the bbox, which we only did when using the move tool, and only for the selected layer.
This change introduces a simpler function to check if a mask is transparent, and if so, deletes all its objects to reset it. This allows us skip these no-op layers entirely.
This check is debounced to 300 ms, trailing edge only.
When layer metadata is stored, the layer IDs are included. When recalling the metadata, we need to assign fresh IDs, else we can end up with multiple layers with the same ID, which of course causes all sorts of issues.
- Viewer only exists on Generation tab
- Viewer defaults to open
- When clicking the Control Layers tab on the left panel, close the viewer (i.e. open the CL editor)
- Do not switch to editor when adding layers (this is handled by clicking the Control Layers tab)
- Do not open viewer when single-clicking images in gallery
- _Do_ open viewer when _double_-clicking images in gallery
- Do not change viewer state when switching between app tabs (this no longer makes sense; the viewer only exists on generation tab)
- Change the button to a drop down menu that states what you are currently doing, e.g. Viewing vs Editing
There are unresolved platform-specific issues with this component, and its utility is debatable.
Should be easy to just revert this commit to add it back in the future if desired.
There are a number of bugs with `framer-motion` that can result in sync issues with AnimatePresence and the conditionally rendered component.
You can see this if you rapidly click an accordion, occasionally it gets out of sync and is closed when it should be open.
This is a bigger problem with the viewer where the user may hold down the `z` key. It's trivial to get it to lock up.
For now, just remove the animation entirely.
Upstream issues for reference:
https://github.com/framer/motion/issues/2023https://github.com/framer/motion/issues/2618https://github.com/framer/motion/issues/2554
