Hi Everyone, I managed to write up the line drawing function using the following links - http://www.cs.helsinki.fi/group/goa/mallinnus/lines/bresenh.html http://rosettacode.org/wiki/Bresenham%27s_line_algorithm#Haskell line :: Point -> Point -> [Point] line (xa,ya) (xb,yb) = line' (x1,y1) (x2,y2) deltax deltay ystep isSteep 0 where isSteep = abs (yb - ya) > abs (xb - xa) (xa',ya',xb',yb') = if isSteep then (ya,xa,yb,xb) else (xa,ya,xb,yb) (x1,y1,x2,y2) = if xa' > xb' then (xb',yb',xa',ya') else (xa',ya',xb',yb') deltax = x2 - x1 deltay = abs (y2 - y1) ystep = if y1 < y2 then 1 else -1 line' :: Point -> Point -> Integer -> Integer -> Integer -> Bool -> Integer -> [Point] line' (x1,y1) (x2,y2) deltax deltay ystep isSteep error = if x1 == x2 then if isSteep then [(y1,x1)] else [(x1,y1)] else if isSteep then [(y1,x1)] ++ line' (newX,newY) (x2,y2) deltax deltay ystep isSteep newError else [(x1,y1)] ++ line' (newX,newY) (x2,y2) deltax deltay ystep isSteep newError where newX = x1 + 1 tempError = error + deltay (newY, newError) = if (2*tempError) >= deltax then (y1+ystep,tempError-deltax) else (y1,tempError) Can someone please provide feedback on this? In terms of, how do I get more Haskell'ism into it. Regards, Kashyap