Improve interactions with bounding boxes

[nathanielrindlaub]

Currently only clicking and dragging from left to right and top to bottom works. Make bottom to top and right to left work as well.

[nathanielrindlaub]

• [ ] Support clicking and dragging in all directions when drawing new bounding box
• [x] Make dragging to & around edges of image more bullet proof
• [ ] make grabbing small objects and moving them easier
• [ ] whole ux can get a little laggy (including cross hairs catching up to mouse when creating a bbox, the drawing of the bbox itself). Try to figure out a fix.

[nathanielrindlaub]

Also related, Roboflow has a "hand" tool for making these kinds of adjustments. I think the hand cursor is nice but don't think it needs to be it's own tool/mode, but might be worth taking another look at how they display corner handles and manage selecting objects etc.

They do a kind of nice thing in which, when in hand tool mode, a dark transparent overlay is applied to all background that's not a object rectangle, and an additional one gets applied when you hover over a specific object, making the other objects appear a little darker too and making it very clear which one you're selecting. I like that quite a bit.

[nathanielrindlaub]

• [ ] making validate/invalidate buttons easier to click to the labels.

[nathanielrindlaub]

• [ ] make it easier to select objects that sit below other objects. One idea for a fix: add "send to back / send to front" items to bounding-box context menus, the same way Google Slides and vector editing programs do it.

[nathanielrindlaub]

• [ ] single button to remove object (rather than having to invalidate whole stack of labels)?

[nathanielrindlaub]

• [ ] click-and-drag to select multiple objects?

[nathanielrindlaub]

We have also gotten feedback from a few users that it's not obvious that you can click the label on the bounding box to change (add) a new one, Folks were validating megadetctor objects then adding new objects around them for the species labels.

[nathanielrindlaub]

Also the unlock/lock button could use a hard look. One user was editing labels then unlocking the objects because he thought the unlock button was the lock button.

[nathanielrindlaub]

• [ ] button to hide all the bounding boxes to make it easier to see the image (Nat Geo user suggestion)

[nathanielrindlaub]

• [ ] make currently focused bounding box more clear

[nathanielrindlaub]

Received some feedback from users that the UX makes it seem like users are editing a current label, rather than adding an new one on top of it. Fair point.