egradman

# copyright 2010 Eric Gradman
# free to use for any purpose, with or without attribution
# from an algorithm by James McNeill at
# http://playtechs.blogspot.com/2007/04/hex-grids.html

# the center of hex (0,0) is located at cartesian coordinates (0,0)

import numpy as np

# R ~ center of hex to edge