cells touched in grid on move between cells

*To*: mathgroup at smc.vnet.net*Subject*: [mg115833] cells touched in grid on move between cells*From*: Larz <wbsurfver at gmail.com>*Date*: Sat, 22 Jan 2011 03:21:38 -0500 (EST)

What is the basic calculation or formula to calculate what cells are passed through in a grid in a move between cells. Say I am at x1,y2 and I want to move to x2,y2. I want to calculate all the cell coordinates I have to pass through in that move. Sorry if my math is a bit rusty, but offhand I am not sure what the formula is ..