- Layout changes
- Use panels instead of boxes resulting in a more compact UI,
more suitable to the drag-and-drop UI.
- Make all enum options to drop-down menus.
- Rename the title of `Position` box to `Transform`.
- Remove sub-headers `Plane dimensions`,
`Orientation` under Transform box.
- Move offset related options to the bottom. Importing a single
plane would be more common use case.
- Rename "Animate Image Sequences" to "Detect Image Sequences".
- Rename several labels and option names. Since drop-down allows more
space, make some option names verbose.
- Remove the warning `'Opaque' does not support alpha`. It should be
obvious from usual Blender usage, and doesn't need a special warning
from the add-on.
- Disable Alpha Mode options instead of hiding it when use alpha is
unchecked.
- Hide Track Camera option instead of disabling it when supported
align modes are selected.
- Fix or rewrite several tool-tips.
Original PR by Sun Kim: blender/blender-addons!104936
Ref: !122345
Co-authored-by: Sun Kim <perplexing.sun@gmail.com>
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