119 lines
3.1 KiB
Haskell
119 lines
3.1 KiB
Haskell
{-# LANGUAGE RecordWildCards #-}
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import Affection
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import qualified SDL
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import qualified GEGL as G
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import qualified BABL as B
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import qualified Data.Map.Strict as M
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import Debug.Trace
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main :: IO ()
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main = do
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conf <- return $ AffectionConfig
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{ initComponents = All
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, windowTitle = "Affection: example00"
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, windowConfig = SDL.defaultWindow
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, preLoop = return ()
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, eventLoop = handle
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, updateLoop = update
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, drawLoop = draw
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, loadState = load
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, cleanUp = clean
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}
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withAffection conf
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data UserData = UserData
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{ nodeGraph :: M.Map String G.GeglNode
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, foreground :: G.GeglBuffer
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, lastTick :: Double
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}
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load :: SDL.Surface -> IO UserData
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load _ = do
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traceM "loading"
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root <- G.gegl_node_new
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traceM "new root node"
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checkerboard <- G.gegl_node_new_child root $ G.checkerboardOperation $
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props $ do
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prop "color1" $ G.RGBA 0.4 0.4 0.4 1
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prop "color2" $ G.RGBA 0.6 0.6 0.6 1
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traceM "checkerboard"
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over <- G.gegl_node_new_child root G.defaultOverOperation
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traceM "over"
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buffer <- G.gegl_buffer_new (Just $ G.GeglRectangle 0 0 800 600) =<<
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B.babl_format (B.PixelFormat B.RGBA B.CFfloat)
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sink <- G.gegl_node_new_child root $ G.Operation "gegl:copy-buffer" $
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props $
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prop "buffer" buffer
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traceM "buffer-sink"
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rect <- G.gegl_node_new_child root $ G.Operation "gegl:rectangle" $
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props $ do
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prop "x" (0::Double)
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prop "y" (0::Double)
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prop "width" (20::Double)
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prop "height" (20::Double)
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prop "color" $ G.RGBA 1 0 0 0.5
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traceM "rect"
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crop <- G.gegl_node_new_child root $ G.Operation "gegl:crop" $
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props $ do
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prop "width" (800::Double)
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prop "height" (600::Double)
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G.gegl_node_link_many [checkerboard, over, crop, sink]
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_ <- G.gegl_node_connect_to rect "output" over "aux"
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traceM "connections made"
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myMap <- return $ M.fromList
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[ ("root" , root)
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, ("over" , over)
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, ("background" , checkerboard)
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, ("sink" , sink)
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, ("rect" , rect)
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, ("crop" , crop)
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]
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traceM "loading complete"
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return $ UserData
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{ nodeGraph = myMap
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, foreground = buffer
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, lastTick = 0
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}
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-- drawInit :: Affection UserData ()
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-- drawInit = do
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-- UserData{..} <- getAffection
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-- present (GeglRectangle 0 0 800 600) foreground True
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draw :: Affection UserData ()
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draw = do
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UserData{..} <- getAffection
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process (nodeGraph M.! "sink")
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present (GeglRectangle 0 0 800 600) foreground True
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update :: Affection UserData ()
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update = do
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traceM "updating"
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tick <- getTick
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ud <- getAffection
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putAffection $ ud { lastTick = tick }
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let dt = tick - lastTick ud
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return ()
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traceM $ (show $ 1 / dt) ++ " FPS"
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handle (SDL.MouseMotionEvent dat) = do
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let (SDL.P (SDL.V2 x y)) = SDL.mouseMotionEventPos dat
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ud <- getAffection
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liftIO $ G.gegl_node_set (nodeGraph ud M.! "rect") $ G.Operation "" $
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props $ do
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prop "x" (fromIntegral (x - 10) :: Double)
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prop "y" $ (fromIntegral (y - 10) :: Double)
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handle (SDL.WindowClosedEvent _) = do
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traceM "seeya!"
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quit
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handle _ =
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return ()
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clean :: UserData -> IO ()
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clean _ = return ()
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