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better overflow for RGBA creation

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nek0 2016-03-26 08:49:24 +01:00
parent 89fc700dfe
commit 693215792b
1 changed files with 2 additions and 2 deletions
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4
src/Affection/Types.hs
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@ -13,8 +13,8 @@ newRGBA :: Int -> Int -> Int -> Int -> RGBA
newRGBA r g b a = RGBA (overflow r) (overflow g) (overflow b) (overflow a)
where
overflow x
| x < 0 = 255 + (x `mod` 255)
| otherwise = x `mod` 255
| x < 0 = x - (x `div` 256) * 255 + 1
| otherwise = x - (x `div` 256) * 255
getR :: RGBA -> Int
getR (RGBA r _ _ _) = r