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1. mixWith :: Pixel a => (Int -> PixelBaseComponent a -> PixelBaseComponent a -> PixelBaseComponent a) -> a -> a -> a

   JuicyPixels	Codec.Picture.Types

   Call the function for every component of the pixels. For example for RGB pixels mixWith is declared like this:

   mixWith f (PixelRGB8 ra ga ba) (PixelRGB8 rb gb bb) =
   PixelRGB8 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb)
   

2. mixWithAlpha :: Pixel a => (Int -> PixelBaseComponent a -> PixelBaseComponent a -> PixelBaseComponent a) -> (PixelBaseComponent a -> PixelBaseComponent a -> PixelBaseComponent a) -> a -> a -> a

   JuicyPixels	Codec.Picture.Types

   Extension of the mixWith which separate the treatment of the color components of the alpha value (transparency component). For pixel without alpha components, it is equivalent to mixWith.

   mixWithAlpha f fa (PixelRGBA8 ra ga ba aa) (PixelRGB8 rb gb bb ab) =
   PixelRGBA8 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb) (fa aa ab)
   

3. mutablePixelBaseIndex :: Pixel a => MutableImage s a -> Int -> Int -> Int

   JuicyPixels	Codec.Picture.Types

   Calculate theindex for the begining of the pixel at position x y

4. packPixel :: PackeablePixel a => a -> PackedRepresentation a

   JuicyPixels	Codec.Picture.Types

   The packing function, allowing to transform to a primitive.

5. pixelAt :: Pixel a => Image a -> Int -> Int -> a

   JuicyPixels	Codec.Picture.Types

   Extract a pixel at a given position, (x, y), the origin is assumed to be at the corner top left, positive y to the bottom of the image

6. pixelBaseIndex :: Pixel a => Image a -> Int -> Int -> Int

   JuicyPixels	Codec.Picture.Types

   Calculate the index for the begining of the pixel

7. pixelFold :: forall acc pixel . Pixel pixel => (acc -> Int -> Int -> pixel -> acc) -> acc -> Image pixel -> acc

   JuicyPixels	Codec.Picture.Types

   Fold over the pixel of an image with a raster scan order: from top to bottom, left to right

8. pixelFoldM :: (Pixel pixel, Monad m) => (acc -> Int -> Int -> pixel -> m acc) -> acc -> Image pixel -> m acc

   JuicyPixels	Codec.Picture.Types

   Fold over the pixel of an image with a raster scan order: from top to bottom, left to right, carrying out a state

9. pixelFoldMap :: forall m px . (Pixel px, Monoid m) => (px -> m) -> Image px -> m

   JuicyPixels	Codec.Picture.Types

   Fold over the pixel of an image with a raster scan order: from top to bottom, left to right. This functions is analog to the foldMap from the Foldable typeclass, but due to the Pixel constraint, Image cannot be made an instance of it.

10. pixelMap :: (Pixel a, Pixel b) => (a -> b) -> Image a -> Image b

    JuicyPixels	Codec.Picture.Types

    map equivalent for an image, working at the pixel level. Little example : a brightness function for an rgb image

    brightnessRGB8 :: Int -> Image PixelRGB8 -> Image PixelRGB8
    brightnessRGB8 add = pixelMap brightFunction
    where up v = fromIntegral (fromIntegral v + add)
    brightFunction (PixelRGB8 r g b) =
    PixelRGB8 (up r) (up g) (up b)
    

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