Graphics.OpenEXR

Library for writting OpenEXR images which support high dynamic range. These images are common in computer graphics, especially ray tracing, and can be used to delay quantization to the post-processing stage.

An example of writting 1x1 ZIP compressed image consisting of a red pixel.

module Main where

import qualified Data.Vector      as V
import qualified Graphics.OpenEXR as EXR


main :: IO ()
main = do
        let image = EXR.ImageRGBF 1 1 (V.fromList [EXR.PixelRGBF 1.0 0.0 0.0])
        EXR.writeFile "image.exr" image EXR.ZipCompression

Documentation

data Image

Constructors

ImageRGBF

Fields

• imageWidth :: !Int
• imageHeight :: !Int
• imageData :: Vector PixelRGBF

  Stored in row-major layout

Instances

Show Image

Methods

showsPrec :: Int -> Image -> ShowS

show :: Image -> String

showList :: [Image] -> ShowS

Generic Image

Associated Types

type Rep Image :: * -> *

Methods

from :: Image -> Rep Image x

to :: Rep Image x -> Image

NFData Image

Methods

rnf :: Image -> ()

type Rep Image

type Rep Image = D1 (MetaData "Image" "Graphics.OpenEXR" "openexr-write-0.1.0.0-37x8nY7RrDl4dWSvkqo55o" False) (C1 (MetaCons "ImageRGBF" PrefixI True) ((:*:) (S1 (MetaSel (Just Symbol "imageWidth") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Int)) ((:*:) (S1 (MetaSel (Just Symbol "imageHeight") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Int)) (S1 (MetaSel (Just Symbol "imageData") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (Vector PixelRGBF))))))

data PixelRGBF

Constructors

PixelRGBF !Float !Float !Float

Instances

Show PixelRGBF

Methods

showsPrec :: Int -> PixelRGBF -> ShowS

show :: PixelRGBF -> String

showList :: [PixelRGBF] -> ShowS

Generic PixelRGBF

Associated Types

type Rep PixelRGBF :: * -> *

Methods

from :: PixelRGBF -> Rep PixelRGBF x

to :: Rep PixelRGBF x -> PixelRGBF

NFData PixelRGBF

Methods

rnf :: PixelRGBF -> ()

type Rep PixelRGBF

type Rep PixelRGBF = D1 (MetaData "PixelRGBF" "Graphics.OpenEXR" "openexr-write-0.1.0.0-37x8nY7RrDl4dWSvkqo55o" False) (C1 (MetaCons "PixelRGBF" PrefixI False) ((:*:) (S1 (MetaSel (Nothing Symbol) NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Float)) ((:*:) (S1 (MetaSel (Nothing Symbol) NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Float)) (S1 (MetaSel (Nothing Symbol) NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Float)))))

data CompressionType

Constructors

NoCompression

No compression applied

ZipsCompression

DEFLATE lossless compression applied per scanline

ZipCompression

DEFLATE lossless compression applied per 16 scanlines

Instances

Enum CompressionType

Methods

succ :: CompressionType -> CompressionType

pred :: CompressionType -> CompressionType

toEnum :: Int -> CompressionType

fromEnum :: CompressionType -> Int

enumFrom :: CompressionType -> [CompressionType]

enumFromThen :: CompressionType -> CompressionType -> [CompressionType]

enumFromTo :: CompressionType -> CompressionType -> [CompressionType]

enumFromThenTo :: CompressionType -> CompressionType -> CompressionType -> [CompressionType]

Binary CompressionType

Methods

put :: CompressionType -> Put

get :: Get CompressionType

putList :: [CompressionType] -> Put

writeFile :: FilePath -> Image -> CompressionType -> IO ()

Write an Image using a CompressionType to an OpenEXR formatted file