HDRUtils-1.0.2: Utilities for reading, manipulating, and writing HDR images Source code Contents Index

Graphics.Image.PixelMap

Synopsis

type Channel = StorableArray (Int, Int) CFloat data PixelMap = PixelMap { tags :: [(String, String)] pixels :: Map String (StorableArray (Int, Int) CFloat) width :: Int height :: Int colorspace :: ColourSpace } class ImageData a where toPixelMap :: a -> PixelMap fromPixelMap :: PixelMap -> a data ColourSpace = Ciea | Rgba (RGBSpace CFloat) | Srgba | SrgbaLinear (!!) :: PixelMap -> (Int, Int) -> IO (AlphaColour CFloat) (!/) :: PixelMap -> (Int, Int, String) -> IO CFloat (!/=) :: (CFloat -> IO ()) -> CFloat -> IO () refChan :: PixelMap -> (Int, Int) -> String -> CFloat -> IO () (!=) :: (AlphaColour CFloat -> IO ()) -> AlphaColour CFloat -> IO () refPixel :: PixelMap -> (Int, Int) -> AlphaColour CFloat -> IO ()

Documentation

type Channel = StorableArray (Int, Int) CFloat Source

type of channels

data PixelMap Source

A pixel map, stored as separate 2D mutable, C-compatible arrays for each channel in w,h order Constructors PixelMap tags :: [(String, String)] tags for TIFF files pixels :: Map String (StorableArray (Int, Int) CFloat) the actual pixels. if the image is an CIE one then channels will be "X", "Y", "Z" (and possibly more). If it's RGB, then it's "R" "G" "B" (and possibly more) width :: Int the width of the image height :: Int the height of the image colorspace :: ColourSpace the color space of the image (see Data.Colour for more details)

class ImageData a where Source

Converting to and from this portable PixelMap format Methods toPixelMap Source :: a -> PixelMap Go to a pixel map from an arbitrary type. fromPixelMap Source :: PixelMap -> a Go from a pixel map to an arbitrary type. Instances ImageData FPFrame

data ColourSpace Source

Colourspace monikers representing different spaces in Data.Colour Constructors Ciea CIE XYZa format. Don't worry if you don't have an alpha channel, it will be filled in if you don't. Rgba (RGBSpace CFloat) RGBa with a defined colourspace Srgba SRGBa SrgbaLinear Linear SRGBa colourspace

(!!) :: PixelMap -> (Int, Int) -> IO (AlphaColour CFloat) Source

Read an arbitrary pixel

(!/) :: PixelMap -> (Int, Int, String) -> IO CFloat Source

Read one channel from an arbitrary pixel

(!/=) :: (CFloat -> IO ()) -> CFloat -> IO () Source

Write one channel of an arbitrary pixel

refChan :: PixelMap -> (Int, Int) -> String -> CFloat -> IO () Source

Usage: refChan image (0,0) "R" !/= 1.0

(!=) :: (AlphaColour CFloat -> IO ()) -> AlphaColour CFloat -> IO () Source

Write a colour to an arbitrary pixel

refPixel :: PixelMap -> (Int, Int) -> AlphaColour CFloat -> IO () Source

Usage: refPixel image (0,0) != opaque black

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