How are the Tower's attack ranges calculated?

[Sameopet]

Is it a circle around them, distance away on the closest path, or some other method?

 

[toropov]

A cube around the tower.

 

[Ellie Williams]

A cube around the tower.

If range is 3:

0000000
0000000
0000000
000X000
0000000
0000000
0000000

Where "0" is the tower's range and "X" is the tower.

 

[Livid]

If range is 3:


Where "0" is the tower's range and "X" is the tower.

I don't speak robot ._.

 

[Sameopet]

If range is 3:


Where "0" is the tower's range and "X" is the tower.

Is this from the center block of the tower?