essence-of-live-coding-gloss-0.2.8: General purpose live coding framework - Gloss backend

Safe Haskell	None
Language	Haskell2010

LiveCoding.Gloss.PictureM

Synopsis

type PictureM = PictureT IO
type PictureT (m :: Type -> Type) = ReaderT [Event] (WriterT Picture m)
runPictureT :: forall (m :: Type -> Type) a b. Monad m => Cell (PictureT m) a b -> Cell m ([Event], a) (Picture, b)
addPicture :: forall (m :: Type -> Type). Monad m => Cell (PictureT m) Picture ()
module Control.Monad.Trans.Reader

Documentation

type PictureM = PictureT IO Source #

PictureT specialised to the IO monad.

type PictureT (m :: Type -> Type) = 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.

runPictureT :: forall (m :: Type -> Type) a b. 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 :: forall (m :: Type -> Type). Monad m => Cell (PictureT m) Picture () Source #

module Control.Monad.Trans.Reader