%% Used to generate grids to write to images
function[grid] = blockGeneration(current, next, zoomFactor)

%% grid - Output to write to image
%% current - Current stop
%% next - Next Stop
%% ZoomFactor - 7*zoomFactor is size of image side

grid = zeros(7);
grid(9:13) = decode('TOP') - 48;
grid(16:20) = decode(current) - 48;
grid(23:27) = decode(next) - 48;
grid(30:34) = bitxor(grid(16:20), grid(23:27));
grid(37:41) = decode('BOT') - 48;

grid = transpose(grid);
grid = imresize(grid, zoomFactor, 'nearest');

imwrite(grid, strcat('blockImages/', current, next, '.png'));

% A = 00001 ... Z = 11010, TOP = 11011, BOTTOM = 11100, END = 11101
function [binRep] = decode(charRep)

if (charRep == 'END')
    binRep = '11101';
elseif (charRep == 'TOP')
    binRep = '11011';
elseif (charRep == 'BOT')
    binRep = '11100';
else
    val = double(charRep) - 64;
    binRep = dec2bin(val, 5);
end