FreeGame.Data.Bitmap

Manipulating bitmaps

Basic types and functions

data Bitmap

Bitmap data with unique hashes.

Constructors

BitmapData (Array F DIM3 Word8) (Maybe Int)

This value is used to ensure that two bitmaps are equivalent.

Instances

Eq Bitmap

Ord Bitmap

Show Bitmap

_BitmapArray :: Functor f => (Array F DIM3 Word8 -> f (Array F DIM3 Word8)) -> Bitmap -> f Bitmap

_BitmapArray :: Lens' Bitmap (Array F DIM3 Word8) The concrete data is stored as a repa array (y * x * ABGR).

_BitmapHash :: Functor f => (Maybe Int -> f (Maybe Int)) -> Bitmap -> f Bitmap

_BitmapHash :: Lens' Bitmap (Maybe Int)

bitmapSize :: Bitmap -> (Int, Int)

Get the size of the Bitmap.

Load and Save

readBitmap :: MonadIO m => FilePath -> m Bitmap

Load an image file.

writeBitmap :: MonadIO m => FilePath -> Bitmap -> m ()

Save Bitmap into a file.

loadBitmapFromFile :: MonadIO m => FilePath -> m Bitmap

Deprecated: use readBitmap instead

Constructing bitmaps

toBitmap :: Array F DIM3 Word8 -> Bitmap

Create unstable Bitmap from the given array.

toStableBitmap :: Array F DIM3 Word8 -> Bitmap

Create stable Bitmap from the given array and compute the hash.

makeStableBitmap :: Array F DIM3 Word8 -> IO Bitmap

Create stable Bitmap with unique hash from the given array.

Bitmap operations

onBitmapWithHashable :: Hashable h => h -> (Array F DIM3 Word8 -> Array F DIM3 Word8) -> Bitmap -> Bitmap

Convert the Bitmap uniformalized by the Hashable value by the given function.

cropBitmap

Arguments

:: Bitmap

original bitmap

-> (Int, Int)

width and height

-> (Int, Int)

x and y

-> Bitmap

result

Extract a Bitmap from the specified range.