166 lines
5 KiB
Haskell
166 lines
5 KiB
Haskell
{-# LANGUAGE RecordWildCards #-}
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import Affection
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import qualified SDL
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import qualified SDL.Raw as Raw
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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 Foreign.Storable (peek)
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import Foreign.C.Types
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import Debug.Trace
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-- main :: IO ()
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-- main = withAllAffection $
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-- withDefaultWindow "test" $ do
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-- changeColor $ RGBA 255 255 255 255
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-- clear
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-- present
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-- liftIO $ delaySec 2
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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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, drawLoop = draw
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, updateLoop = update
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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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, elapsedTime :: 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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[ G.Property "color1" $ G.PropertyColor $ G.RGBA 0.4 0.4 0.4 1
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, G.Property "color2" $ G.PropertyColor $ G.RGBA 0.6 0.6 0.6 1
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]
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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 (G.GeglRectangle 0 0 800 600) =<<
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B.babl_format (B.PixelFormat B.RGBA B.CFfloat)
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bufsrc <- G.gegl_node_new_child root $ G.bufferSourceOperation
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[ G.Property "buffer" $ G.PropertyBuffer buffer
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]
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traceM "buffer-source"
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G.gegl_node_link checkerboard over
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G.gegl_node_connect_to bufsrc "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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, ("foreground" , bufsrc)
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]
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let roi = G.GeglRectangle 0 0 20 20
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-- G.iterateOver
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-- buffer
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-- roi
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-- (B.PixelFormat B.RGBA B.CFfloat)
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-- G.GeglAccessReadWrite
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-- G.GeglAbyssNone
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-- (\(G.Pixel px py pc) ->
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-- let dsqr = (((10 - px) ^ 2) + ((10 - py) ^ 2))
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-- (G.CVfloat (CFloat pr), G.CVfloat (CFloat pg), G.CVfloat (CFloat pb), G.CVfloat (CFloat pa)) = pc
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-- dist = (sqrt (fromIntegral dsqr :: Float))
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-- in if dsqr < 100
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-- then
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-- if dist < fromIntegral 9
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-- then
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-- G.Pixel px py
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-- ( G.CVfloat $ CFloat 0
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-- , G.CVfloat $ CFloat 0
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-- , G.CVfloat $ CFloat 0
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-- , G.CVfloat $ CFloat $ if pa < 1 then 1 else pa
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-- )
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-- else
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-- let alpha = fromIntegral 10 - dist
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-- dst_a = pa
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-- a = alpha + dst_a * (1 - alpha)
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-- a_term = dst_a * (1 - alpha)
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-- red = 0 * alpha + pr * a_term
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-- gre = 0 * alpha + pg * a_term
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-- blu = 0 * alpha + pb * a_term
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-- in
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-- G.Pixel px py
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-- ( G.CVfloat $ CFloat $ red / a
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-- , G.CVfloat $ CFloat $ gre / a
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-- , G.CVfloat $ CFloat $ blu / a
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-- , G.CVfloat $ CFloat $ if pa < alpha then alpha else pa
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-- )
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-- else
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-- G.Pixel px py pc
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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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, elapsedTime = 0
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}
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draw :: Affection UserData ()
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draw = do
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traceM "drawing"
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AffectionData{..} <- get
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let UserData{..} = userState
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liftIO $ SDL.lockSurface drawSurface
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pixels <- liftIO $ SDL.surfacePixels drawSurface
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let SDL.Surface rawSurfacePtr _ = drawSurface
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rawSurface <- liftIO $ peek rawSurfacePtr
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pixelFormat <- liftIO $ peek $ Raw.surfaceFormat rawSurface
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format <- liftIO $ (B.babl_format $ B.PixelFormat B.RGBA B.CFu8)
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SDL.V2 (CInt rw) (CInt rh) <- SDL.surfaceDimensions drawSurface
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let (w, h) = (fromIntegral rw, fromIntegral rh)
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drawRect foreground (nodeGraph M.! "over") (G.RGB 1 0 0) (Line 2) (G.GeglRectangle 10 10 500 500)
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-- liftIO $ G.gegl_node_blit
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-- (nodeGraph M.! "over" :: G.GeglNode)
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-- 1
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-- (G.GeglRectangle 0 0 w h)
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-- format
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-- pixels
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-- (fromIntegral (Raw.pixelFormatBytesPerPixel pixelFormat) * w)
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-- [G.GeglBlitDefault]
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liftIO $ SDL.unlockSurface drawSurface
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liftIO $ SDL.updateWindowSurface drawWindow
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update :: Double -> AffectionState (AffectionData UserData) IO ()
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update sec = do
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traceM "updating"
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-- liftIO $ delaySec 5
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ad@AffectionData{..} <- get
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let ud@UserData{..} = userState
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traceM $ (show $ 1 / sec) ++ " FPS"
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if elapsedTime < 20
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then do
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fg <- liftIO $ G.gegl_buffer_get_extent foreground
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_ <- liftIO $ G.gegl_buffer_set_extent foreground $ fg
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{ G.rectangleX = G.rectangleX fg + 1
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, G.rectangleY = G.rectangleY fg + 1
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}
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put $ ad
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{ userState = ud
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{ elapsedTime = elapsedTime + sec
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}
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}
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else
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put $ ad
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{ quitEvent = True
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}
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clean :: UserData -> IO ()
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clean _ = return ()
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