[Freeciv-Dev] (PR#8602) hex tilesets and cell drawing

["Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=8602 >

Hex tilesets don't work well with cell-based drawing.  The drawing used
by iso-view tilesets for oceans puts 4 cells, one in each "corner".  But
in hex there are 6 corners.

In rectangular view there are 4 * 2^3 = 32 cells required.

In hex view there are 6 * 2^2 = 24 cells required for a proper
implementation.

jason