How to tell if a plot is outside of the player's current scroll range?

[Vicevirtuoso]

In the early game, the player is not allowed to scroll the map much further than the fog of war around the starting position. Is there a way to determine if a given plot is outside of the user's viewable scroll radius? I am trying to center the map on a plot regardless of whether or not it's revealed, but if it is outside of the map scroll radius, nothing happens.

 

[whoward69]

Short of calculating the distance from the plot-in-the-fog to the nearest revealed plot and seeing if it is less than X (where X probably has to be best guess hard-coded), probably none.