essence-of-live-coding-gloss-0.2.0.0: General purpose live coding framework - Gloss backend

Safe Haskell	None
Language	Haskell2010

LiveCoding.Gloss.PictureM

Synopsis

type PictureT m = ReaderT [Event] (WriterT Picture m)
type PictureM = PictureT IO
runPictureT :: Monad m => Cell (PictureT m) a b -> Cell m ([Event], a) (Picture, b)
addPicture :: Monad m => Cell (PictureT m) Picture ()

Documentation

type PictureT m = ReaderT [Event] (WriterT Picture m) Source #

The monad transformer that captures the effects of gloss, which are reading events and writing pictures.

You can call these effects for example by...

...using ask to read the events that occurred,
...composing a cell with addPicture to paint a picture.

type PictureM = PictureT IO Source #

PictureT specialised to the IO monad.

runPictureT :: Monad m => Cell (PictureT m) a b -> Cell m ([Event], a) (Picture, b) Source #

Run the effects of the gloss monad stack by explicitly passing events and pictures.

addPicture :: Monad m => Cell (PictureT m) Picture () Source #