Tileset's polygon editor paint/pick UX improvement

[miv391]

The usability of the tileset's polygon editor is currently quite bad. For me it took a long time to learn that it is, infact, possible to select (pick) existing polygon of some tile instead of just pasting the current polygon to the tiles. When I modified an existing polygon, I just redraw it from scratch.

The polygon editor has two modes:

• Paint mode, where clicking a tile applies the current polygon to the tile.
• Pick mode, where clicking a tile changes the current polygon to the one currently applied to the cliked tile.

The default mode is the paint mode. The pick mode can be selected by clicking this icon:

After clicking the icon you can pick the polygon from one tile by clicking the tile. After that the mode changes automatically back to the paint mode.

So how do I known which mode, paint or pick, is currently active? By looking the pick icon, of course. You just need to learn whether the icon color or the selection rectangle tells whether the pick mode is active.

I propose that something is done to make it more clear which mode is selected. Also making it easier to find the pick feature would be great.

Proposal 1: When the pick mode is activated, clear the polygon view. That will tell the user that as there is no current polygon, I cannot be in the paint mode, so I must in the pick mode. If the user cancels the pick mode, previously used polygon comes back to the polygon view.

Proposal 2: Add dropdown menu to the tileset view. Dropdown menu would contain one item: "[pick icon] Pick polygon from tile". This is how I expected that selecting existing polygons would work.