IssueTracker

Feature Request
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What would you like to see us add to this API?
Offer the ability to fill the outside of a polygon, as opposed to the inside.

Explain your use case for that feature:
I use a polygon to define a region of interest on a map. Because it is the region of interest, I want to highlight it to the user, and deemphasize the rest of the map, by filling the outside of the polygon with a semi-opaque color. Currently I can only make the region of interest itself more opaque, which is not useful.

I see two ways to work around the issue:
1. Define my own TileOverlay, defining and filling the outside of a polygon on my own bitmaps (hard)
2. Define 3 polygons covering the entire globe, one of which contains my region of interest as a hole. This is also non-trivial to pull off correctly due to various Maps bugs and special cases to cover.

This is similar to https://issuetracker.google.com/issues/35821403 but for Android.