    {-# LANGUAGE DeriveDataTypeable #-}
    {-# OPTIONS_HADDOCK hide #-}

    -- | Data type for representing colors.
    module Graphics.Gloss.Internals.Data.Color
            ( Color (..)
            , makeColor
            , makeColorI
            , makeRawColor
            , makeRawColorI
            , rgbaOfColor
            , clampColor)

    where
    import Data.Data

    -- | An abstract color value.
    --      We keep the type abstract so we can be sure that the components
    --      are in the required range. To make a custom color use 'makeColor'.
    data Color
            -- | Holds the color components. All components lie in the range [0..1.
            = RGBA  !Float !Float !Float !Float
            deriving (Int -> Color -> ShowS
    [Color] -> ShowS
    Color -> String
    (Int -> Color -> ShowS)
    -> (Color -> String) -> ([Color] -> ShowS) -> Show Color
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    $cshowsPrec :: Int -> Color -> ShowS
    showsPrec :: Int -> Color -> ShowS
    $cshow :: Color -> String
    show :: Color -> String
    $cshowList :: [Color] -> ShowS
    showList :: [Color] -> ShowS
    Show, Color -> Color -> Bool
    (Color -> Color -> Bool) -> (Color -> Color -> Bool) -> Eq Color
    forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
    $c== :: Color -> Color -> Bool
    == :: Color -> Color -> Bool
    $c/= :: Color -> Color -> Bool
    /= :: Color -> Color -> Bool
    Eq, Typeable Color
    Typeable Color =>
    (forall (c :: * -> *).
     (forall d b. Data d => c (d -> b) -> d -> c b)
     -> (forall g. g -> c g) -> Color -> c Color)
    -> (forall (c :: * -> *).
        (forall b r. Data b => c (b -> r) -> c r)
        -> (forall r. r -> c r) -> Constr -> c Color)
    -> (Color -> Constr)
    -> (Color -> DataType)
    -> (forall (t :: * -> *) (c :: * -> *).
        Typeable t =>
        (forall d. Data d => c (t d)) -> Maybe (c Color))
    -> (forall (t :: * -> * -> *) (c :: * -> *).
        Typeable t =>
        (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Color))
    -> ((forall b. Data b => b -> b) -> Color -> Color)
    -> (forall r r'.
        (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r)
    -> (forall r r'.
        (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r)
    -> (forall u. (forall d. Data d => d -> u) -> Color -> [u])
    -> (forall u. Int -> (forall d. Data d => d -> u) -> Color -> u)
    -> (forall (m :: * -> *).
        Monad m =>
        (forall d. Data d => d -> m d) -> Color -> m Color)
    -> (forall (m :: * -> *).
        MonadPlus m =>
        (forall d. Data d => d -> m d) -> Color -> m Color)
    -> (forall (m :: * -> *).
        MonadPlus m =>
        (forall d. Data d => d -> m d) -> Color -> m Color)
    -> Data Color
    Color -> Constr
    Color -> DataType
    (forall b. Data b => b -> b) -> Color -> Color
    forall a.
    Typeable a =>
    (forall (c :: * -> *).
     (forall d b. Data d => c (d -> b) -> d -> c b)
     -> (forall g. g -> c g) -> a -> c a)
    -> (forall (c :: * -> *).
        (forall b r. Data b => c (b -> r) -> c r)
        -> (forall r. r -> c r) -> Constr -> c a)
    -> (a -> Constr)
    -> (a -> DataType)
    -> (forall (t :: * -> *) (c :: * -> *).
        Typeable t =>
        (forall d. Data d => c (t d)) -> Maybe (c a))
    -> (forall (t :: * -> * -> *) (c :: * -> *).
        Typeable t =>
        (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c a))
    -> ((forall b. Data b => b -> b) -> a -> a)
    -> (forall r r'.
        (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> a -> r)
    -> (forall r r'.
        (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> a -> r)
    -> (forall u. (forall d. Data d => d -> u) -> a -> [u])
    -> (forall u. Int -> (forall d. Data d => d -> u) -> a -> u)
    -> (forall (m :: * -> *).
        Monad m =>
        (forall d. Data d => d -> m d) -> a -> m a)
    -> (forall (m :: * -> *).
        MonadPlus m =>
        (forall d. Data d => d -> m d) -> a -> m a)
    -> (forall (m :: * -> *).
        MonadPlus m =>
        (forall d. Data d => d -> m d) -> a -> m a)
    -> Data a
    forall u. Int -> (forall d. Data d => d -> u) -> Color -> u
    forall u. (forall d. Data d => d -> u) -> Color -> [u]
    forall r r'.
    (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r
    forall r r'.
    (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r
    forall (m :: * -> *).
    Monad m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    forall (c :: * -> *).
    (forall b r. Data b => c (b -> r) -> c r)
    -> (forall r. r -> c r) -> Constr -> c Color
    forall (c :: * -> *).
    (forall d b. Data d => c (d -> b) -> d -> c b)
    -> (forall g. g -> c g) -> Color -> c Color
    forall (t :: * -> *) (c :: * -> *).
    Typeable t =>
    (forall d. Data d => c (t d)) -> Maybe (c Color)
    forall (t :: * -> * -> *) (c :: * -> *).
    Typeable t =>
    (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Color)
    $cgfoldl :: forall (c :: * -> *).
    (forall d b. Data d => c (d -> b) -> d -> c b)
    -> (forall g. g -> c g) -> Color -> c Color
    gfoldl :: forall (c :: * -> *).
    (forall d b. Data d => c (d -> b) -> d -> c b)
    -> (forall g. g -> c g) -> Color -> c Color
    $cgunfold :: forall (c :: * -> *).
    (forall b r. Data b => c (b -> r) -> c r)
    -> (forall r. r -> c r) -> Constr -> c Color
    gunfold :: forall (c :: * -> *).
    (forall b r. Data b => c (b -> r) -> c r)
    -> (forall r. r -> c r) -> Constr -> c Color
    $ctoConstr :: Color -> Constr
    toConstr :: Color -> Constr
    $cdataTypeOf :: Color -> DataType
    dataTypeOf :: Color -> DataType
    $cdataCast1 :: forall (t :: * -> *) (c :: * -> *).
    Typeable t =>
    (forall d. Data d => c (t d)) -> Maybe (c Color)
    dataCast1 :: forall (t :: * -> *) (c :: * -> *).
    Typeable t =>
    (forall d. Data d => c (t d)) -> Maybe (c Color)
    $cdataCast2 :: forall (t :: * -> * -> *) (c :: * -> *).
    Typeable t =>
    (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Color)
    dataCast2 :: forall (t :: * -> * -> *) (c :: * -> *).
    Typeable t =>
    (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Color)
    $cgmapT :: (forall b. Data b => b -> b) -> Color -> Color
    gmapT :: (forall b. Data b => b -> b) -> Color -> Color
    $cgmapQl :: forall r r'.
    (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r
    gmapQl :: forall r r'.
    (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r
    $cgmapQr :: forall r r'.
    (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r
    gmapQr :: forall r r'.
    (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Color -> r
    $cgmapQ :: forall u. (forall d. Data d => d -> u) -> Color -> [u]
    gmapQ :: forall u. (forall d. Data d => d -> u) -> Color -> [u]
    $cgmapQi :: forall u. Int -> (forall d. Data d => d -> u) -> Color -> u
    gmapQi :: forall u. Int -> (forall d. Data d => d -> u) -> Color -> u
    $cgmapM :: forall (m :: * -> *).
    Monad m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    gmapM :: forall (m :: * -> *).
    Monad m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    $cgmapMp :: forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    gmapMp :: forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    $cgmapMo :: forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    gmapMo :: forall (m :: * -> *).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> Color -> m Color
    Data, Typeable)

    instance Num Color where
     + :: Color -> Color -> Color
    (+) (RGBA Float
    r1 Float
    g1 Float
    b1 Float
    _) (RGBA Float
    r2 Float
    g2 Float
    b2 Float
    _)
            = Float -> Float -> Float -> Float -> Color
    RGBA (Float
    r1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    + Float
    r2) (Float
    g1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    + Float
    g2) (Float
    b1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    + Float
    b2) Float
    1
     {-# INLINE (+) #-}

     (-) (RGBA Float
    r1 Float
    g1 Float
    b1 Float
    _) (RGBA Float
    r2 Float
    g2 Float
    b2 Float
    _)
            = Float -> Float -> Float -> Float -> Color
    RGBA (Float
    r1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    - Float
    r2) (Float
    g1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    - Float
    g2) (Float
    b1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    - Float
    b2) Float
    1
     {-# INLINE (-) #-}

     * :: Color -> Color -> Color
    (*) (RGBA Float
    r1 Float
    g1 Float
    b1 Float
    _) (RGBA Float
    r2 Float
    g2 Float
    b2 Float
    _)
            = Float -> Float -> Float -> Float -> Color
    RGBA (Float
    r1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    * Float
    r2) (Float
    g1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    * Float
    g2) (Float
    b1 Float -> Float -> Float
    forall a. Num a => a -> a -> a
    * Float
    b2) Float
    1
     {-# INLINE (*) #-}

     abs :: Color -> Color
    abs (RGBA Float
    r1 Float
    g1 Float
    b1 Float
    _)
            = Float -> Float -> Float -> Float -> Color
    RGBA (Float -> Float
    forall a. Num a => a -> a
    abs Float
    r1) (Float -> Float
    forall a. Num a => a -> a
    abs Float
    g1) (Float -> Float
    forall a. Num a => a -> a
    abs Float
    b1) Float
    1
     {-# INLINE abs #-}

     signum :: Color -> Color
    signum (RGBA Float
    r1 Float
    g1 Float
    b1 Float
    _)
            = Float -> Float -> Float -> Float -> Color
    RGBA (Float -> Float
    forall a. Num a => a -> a
    signum Float
    r1) (Float -> Float
    forall a. Num a => a -> a
    signum Float
    g1) (Float -> Float
    forall a. Num a => a -> a
    signum Float
    b1) Float
    1
     {-# INLINE signum #-}

     fromInteger :: Integer -> Color
    fromInteger Integer
    i
      = let f :: Float
    f = Integer -> Float
    forall a. Num a => Integer -> a
    fromInteger Integer
    i
        in  Float -> Float -> Float -> Float -> Color
    RGBA Float
    f Float
    f Float
    f Float
    1
     {-# INLINE fromInteger #-}

    -- | Make a custom color. All components are clamped to the range  [0..1].
    makeColor
            :: Float        -- ^ Red component.
            -> Float        -- ^ Green component.
            -> Float        -- ^ Blue component.
            -> Float        -- ^ Alpha component.
            -> Color

    makeColor :: Float -> Float -> Float -> Float -> Color
    makeColor Float
    r Float
    g Float
    b Float
    a
            = Color -> Color
    clampColor
            (Color -> Color) -> Color -> Color
    forall a b. (a -> b) -> a -> b
    $ Float -> Float -> Float -> Float -> Color
    RGBA Float
    r Float
    g Float
    b Float
    a
    {-# INLINE makeColor #-}

    -- | Make a custom color. All components are clamped to the range [0..255].
    makeColorI :: Int -> Int -> Int -> Int -> Color
    makeColorI :: Int -> Int -> Int -> Int -> Color
    makeColorI Int
    r Int
    g Int
    b Int
    a
            = Color -> Color
    clampColor
            (Color -> Color) -> Color -> Color
    forall a b. (a -> b) -> a -> b
    $ Float -> Float -> Float -> Float -> Color
    RGBA  (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    r Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
                    (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    g Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
                    (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    b Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
                    (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    a Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
    {-# INLINE makeColorI #-}

    -- | Make a custom color.
    --
    --   Using this function over `makeColor` avoids clamping the components,
    --   which saves time. However, if the components are out of range then
    --   this will result in integer overflow at rendering time, and the actual
    --   picture you get will be implementation dependent.
    --
    --   You'll only need to use this function when using the @gloss-raster@
    --   package that builds a new color for every pixel. If you're just working
    --   with the Picture data type then it there is no need for raw colors.
    --
    makeRawColor :: Float -> Float -> Float -> Float -> Color
    makeRawColor :: Float -> Float -> Float -> Float -> Color
    makeRawColor Float
    r Float
    g Float
    b Float
    a
            = Float -> Float -> Float -> Float -> Color
    RGBA Float
    r Float
    g Float
    b Float
    a
    {-# INLINE makeRawColor #-}

    -- | Make a custom color, taking pre-clamped components.
    makeRawColorI :: Int -> Int -> Int -> Int -> Color
    makeRawColorI :: Int -> Int -> Int -> Int -> Color
    makeRawColorI Int
    r Int
    g Int
    b Int
    a
            = Float -> Float -> Float -> Float -> Color
    RGBA  (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    r Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
                    (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    g Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
                    (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    b Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
                    (Int -> Float
    forall a b. (Integral a, Num b) => a -> b
    fromIntegral Int
    a Float -> Float -> Float
    forall a. Fractional a => a -> a -> a
    / Float
    255)
    {-# INLINE makeRawColorI #-}

    -- | Take the RGBA components of a color.
    rgbaOfColor :: Color -> (Float, Float, Float, Float)
    rgbaOfColor :: Color -> (Float, Float, Float, Float)
    rgbaOfColor (RGBA Float
    r Float
    g Float
    b Float
    a)      = (Float
    r, Float
    g, Float
    b, Float
    a)
    {-# INLINE rgbaOfColor #-}

    -- | Clamp components of a raw color into the required range.
    clampColor :: Color -> Color
    clampColor :: Color -> Color
    clampColor Color
    cc
     = let  (Float
    r, Float
    g, Float
    b, Float
    a)    = Color -> (Float, Float, Float, Float)
    rgbaOfColor Color
    cc
            clamp :: a -> a
    clamp a
    x         = (a -> a -> a
    forall a. Ord a => a -> a -> a
    min (a -> a -> a
    forall a. Ord a => a -> a -> a
    max a
    x a
    0.0) a
    1.0)
       in   Float -> Float -> Float -> Float -> Color
    RGBA (Float -> Float
    forall {a}. (Ord a, Fractional a) => a -> a
    clamp Float
    r) (Float -> Float
    forall {a}. (Ord a, Fractional a) => a -> a
    clamp Float
    g) (Float -> Float
    forall {a}. (Ord a, Fractional a) => a -> a
    clamp Float
    b) (Float -> Float
    forall {a}. (Ord a, Fractional a) => a -> a
    clamp Float
    a)