{-# LANGUAGE ParallelListComp #-}
module Main where

import Graphics.Rendering.Diagrams
import Data.Colour.SRGB.Linear

colors = [ rgb r 0 0.5 | r <- [0.2, 0.4 .. 1.0] ]

circles = [ fc c $ circle r | c <- colors | r <- [5,4..1] ]

alignments = [ [ (ha,va) | ha <- [left, hcenter, right] ]
                         | va <- [top,  vcenter, bottom] ]

dia = vsep 2 .
      map (hsep 2) .
      map (map (\(h,v) -> unionA h v circles)) $
      alignments

main = do renderAs PNG "alignment.png" (Width 500) dia