here a triangle works -.-

This commit is contained in:
Nicole Dresselhaus 2014-01-04 03:14:44 +01:00
parent 42e7bd65ac
commit 47de89ca39
2 changed files with 696 additions and 36 deletions

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@ -88,47 +88,47 @@ prettyMap _ = []
generateCube :: [GLfloat] generateCube :: [GLfloat]
generateCube = [ -- lower plane generateCube = [ -- lower plane
-0.3,-0.3,-0.3, -3.0,-3.0,-3.0,
0.3,-0.3,0.3, 3.0,-3.0,3.0,
0.3,-0.3,-0.3, 3.0,-3.0,-3.0,
-0.3,-0.3,-0.3, -3.0,-3.0,-3.0,
-0.3,-0.3,0.3, -3.0,-3.0,3.0,
0.3,-0.3,0.3, 3.0,-3.0,3.0,
-- upper plane -- upper plane
-0.3,0.3,-0.3, -3.0,3.0,-3.0,
0.3,0.3,0.3, 3.0,3.0,3.0,
0.3,0.3,-0.3, 3.0,3.0,-3.0,
-0.3,0.3,-0.3, -3.0,3.0,-3.0,
-0.3,0.3,0.3, -3.0,3.0,3.0,
0.3,0.3,0.3, 3.0,3.0,3.0,
-- left plane -- left plane
-0.3,-0.3,-0.3, -3.0,-3.0,-3.0,
-0.3,0.3,0.3, -3.0,3.0,3.0,
-0.3,-0.3,0.3, -3.0,-3.0,3.0,
-0.3,-0.3,-0.3, -3.0,-3.0,-3.0,
-0.3,0.3,0.3, -3.0,3.0,3.0,
-0.3,0.3,-0.3, -3.0,3.0,-3.0,
-- right plane -- right plane
0.3,-0.3,-0.3, 3.0,-3.0,-3.0,
0.3,0.3,0.3, 3.0,3.0,3.0,
0.3,-0.3,0.3, 3.0,-3.0,3.0,
0.3,-0.3,-0.3, 3.0,-3.0,-3.0,
0.3,0.3,0.3, 3.0,3.0,3.0,
0.3,0.3,-0.3, 3.0,3.0,-3.0,
-- front plane -- front plane
-0.3,-0.3,-0.3, -3.0,-3.0,-3.0,
0.3,0.3,-0.3, 3.0,3.0,-3.0,
0.3,-0.3,-0.3, 3.0,-3.0,-3.0,
-0.3,-0.3,-0.3, -3.0,-3.0,-3.0,
0.3,0.3,-0.3, 3.0,3.0,-3.0,
-0.3,0.3,-0.3, -3.0,3.0,-3.0,
-- back plane -- back plane
-0.3,-0.3,0.3, -3.0,-3.0,3.0,
0.3,0.3,0.3, 3.0,3.0,3.0,
0.3,-0.3,0.3, 3.0,-3.0,3.0,
-0.3,-0.3,0.3, -3.0,-3.0,3.0,
0.3,0.3,0.3, 3.0,3.0,3.0,
-0.3,0.3,0.3 -3.0,3.0,3.0
] ]
generateTriangles :: PlayMap -> [GLfloat] generateTriangles :: PlayMap -> [GLfloat]

660
test2.hs Normal file
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@ -0,0 +1,660 @@
module Main (main) where
--------------------------------------------------------------------------------
import Control.Concurrent.STM (TQueue, atomically, newTQueueIO, tryReadTQueue, writeTQueue)
import Control.Monad (unless, when, void)
import Control.Monad.RWS.Strict (RWST, ask, asks, evalRWST, get, liftIO, modify, put)
import Control.Monad.Trans.Maybe (MaybeT(..), runMaybeT)
import Data.List (intercalate)
import Data.Maybe (catMaybes)
import Text.PrettyPrint
import Control.Applicative
import Control.Lens
import Control.Monad (forever)
import Data.Distributive (distribute)
import Foreign (Ptr, castPtr, nullPtr, sizeOf, with)
import Foreign.C (CFloat)
import Graphics.Rendering.OpenGL (($=))
import qualified Graphics.Rendering.OpenGL as GL
import qualified Graphics.Rendering.OpenGL.Raw as GL
import qualified Graphics.UI.GLFW as GLFW
import qualified Data.Text as Text
import qualified Data.Text.Encoding as Text
import qualified Data.Vector.Storable as V
import Linear as L
import Linear ((!*!))
import Data.IORef
--------------------------------------------------------------------------------
data Env = Env
{ envEventsChan :: TQueue Event
, envWindow :: !GLFW.Window
, envGear1 :: !GL.DisplayList
, envGear2 :: !GL.DisplayList
, envGear3 :: !GL.DisplayList
, envZDistClosest :: !Double
, envZDistFarthest :: !Double
}
data State = State
{ stateWindowWidth :: !Int
, stateWindowHeight :: !Int
, stateXAngle :: !Double
, stateYAngle :: !Double
, stateZAngle :: !Double
, stateGearZAngle :: !Double
, stateZDist :: !Double
, stateMouseDown :: !Bool
, stateDragging :: !Bool
, stateDragStartX :: !Double
, stateDragStartY :: !Double
, stateDragStartXAngle :: !Double
, stateDragStartYAngle :: !Double
}
type Demo = RWST Env () State IO
--------------------------------------------------------------------------------
data Event =
EventError !GLFW.Error !String
| EventWindowPos !GLFW.Window !Int !Int
| EventWindowSize !GLFW.Window !Int !Int
| EventWindowClose !GLFW.Window
| EventWindowRefresh !GLFW.Window
| EventWindowFocus !GLFW.Window !GLFW.FocusState
| EventWindowIconify !GLFW.Window !GLFW.IconifyState
| EventFramebufferSize !GLFW.Window !Int !Int
| EventMouseButton !GLFW.Window !GLFW.MouseButton !GLFW.MouseButtonState !GLFW.ModifierKeys
| EventCursorPos !GLFW.Window !Double !Double
| EventCursorEnter !GLFW.Window !GLFW.CursorState
| EventScroll !GLFW.Window !Double !Double
| EventKey !GLFW.Window !GLFW.Key !Int !GLFW.KeyState !GLFW.ModifierKeys
| EventChar !GLFW.Window !Char
deriving Show
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
triangleTransformation :: (Epsilon a, Floating a) => a -> M44 a
triangleTransformation =
liftA2 (!*!) triangleTranslation triangleRotation
--------------------------------------------------------------------------------
triangleRotation :: (Epsilon a, Floating a) => a -> M44 a
triangleRotation t =
m33_to_m44 $
fromQuaternion $
axisAngle (V3 0 1 0) (t * 2)
triangleTranslation :: Floating a => a -> M44 a
triangleTranslation t =
eye4 & translation .~ V3 (sin t * 2) 0 (-5)
--------------------------------------------------------------------------------
main :: IO ()
main = do
let width = 640
height = 480
eventsChan <- newTQueueIO :: IO (TQueue Event)
withWindow width height "GLFW-b-demo" $ \win -> do
let z = 0
let vertices = V.fromList [ 0, 1, 0
, -1, -1, z
, 1, -1, z ] :: V.Vector Float
vertexAttribute = GL.AttribLocation 0
cubeVbo <- GL.genObjectName
GL.bindBuffer GL.ArrayBuffer $= Just cubeVbo
V.unsafeWith vertices $ \v -> GL.bufferData GL.ArrayBuffer $=
(fromIntegral $ V.length vertices * sizeOf (0 :: Float), v, GL.StaticDraw)
GL.vertexAttribPointer vertexAttribute $=
(GL.ToFloat, GL.VertexArrayDescriptor 3 GL.Float 0 nullPtr)
GL.vertexAttribArray vertexAttribute $= GL.Enabled
GL.bindBuffer GL.ArrayBuffer $= Just cubeVbo
vertexShader <- GL.createShader GL.VertexShader
fragmentShader <- GL.createShader GL.FragmentShader
GL.shaderSourceBS vertexShader $= Text.encodeUtf8
(Text.pack $ unlines
[ "#version 130"
, "uniform mat4 projection;"
, "uniform mat4 model;"
, "in vec3 in_Position;"
, "void main(void) {"
, " gl_Position = projection * model * vec4(in_Position, 1.0);"
, "}"
])
GL.shaderSourceBS fragmentShader $= Text.encodeUtf8
(Text.pack $ unlines
[ "#version 130"
, "out vec4 fragColor;"
, "void main(void) {"
, " fragColor = vec4(1.0,1.0,1.0,1.0);"
, "}"
])
GL.compileShader vertexShader
GL.compileShader fragmentShader
shaderProg <- GL.createProgram
GL.attachShader shaderProg vertexShader
GL.attachShader shaderProg fragmentShader
GL.attribLocation shaderProg "in_Position" $= vertexAttribute
GL.linkProgram shaderProg
GL.currentProgram $= Just shaderProg
let fov = 90
s = recip (tan $ fov * 0.5 * pi / 180)
f = 1000
n = 1
let perspective = V.fromList [ s, 0, 0, 0
, 0, s, 0, 0
, 0, 0, -(f/(f - n)), -1
, 0, 0, -((f*n)/(f-n)), 0
]
GL.UniformLocation loc <- GL.get (GL.uniformLocation shaderProg "projection")
V.unsafeWith perspective $ \ptr -> GL.glUniformMatrix4fv loc 1 0 ptr
tr <- newIORef 0
forever $ do
t <- readIORef tr
GL.clearColor $= GL.Color4 0.5 0.2 1 1
GL.clear [GL.ColorBuffer]
GL.UniformLocation loc <- GL.get (GL.uniformLocation shaderProg "model")
with (distribute $ triangleTransformation t) $ \ptr ->
GL.glUniformMatrix4fv loc 1 0 (castPtr (ptr :: Ptr (M44 CFloat)))
GL.drawArrays GL.Triangles 0 3
GLFW.swapBuffers win
writeIORef tr (t + 0.1)
--------------------------------------------------------------------------------
-- GLFW-b is made to be very close to the C API, so creating a window is pretty
-- clunky by Haskell standards. A higher-level API would have some function
-- like withWindow.
withWindow :: Int -> Int -> String -> (GLFW.Window -> IO ()) -> IO ()
withWindow width height title f = do
GLFW.setErrorCallback $ Just simpleErrorCallback
r <- GLFW.init
when r $ do
m <- GLFW.createWindow width height title Nothing Nothing
case m of
(Just win) -> do
GLFW.makeContextCurrent m
f win
GLFW.setErrorCallback $ Just simpleErrorCallback
GLFW.destroyWindow win
Nothing -> return ()
GLFW.terminate
where
simpleErrorCallback e s =
putStrLn $ unwords [show e, show s]
--------------------------------------------------------------------------------
-- Each callback does just one thing: write an appropriate Event to the events
-- TQueue.
errorCallback :: TQueue Event -> GLFW.Error -> String -> IO ()
windowPosCallback :: TQueue Event -> GLFW.Window -> Int -> Int -> IO ()
windowSizeCallback :: TQueue Event -> GLFW.Window -> Int -> Int -> IO ()
windowCloseCallback :: TQueue Event -> GLFW.Window -> IO ()
windowRefreshCallback :: TQueue Event -> GLFW.Window -> IO ()
windowFocusCallback :: TQueue Event -> GLFW.Window -> GLFW.FocusState -> IO ()
windowIconifyCallback :: TQueue Event -> GLFW.Window -> GLFW.IconifyState -> IO ()
framebufferSizeCallback :: TQueue Event -> GLFW.Window -> Int -> Int -> IO ()
mouseButtonCallback :: TQueue Event -> GLFW.Window -> GLFW.MouseButton -> GLFW.MouseButtonState -> GLFW.ModifierKeys -> IO ()
cursorPosCallback :: TQueue Event -> GLFW.Window -> Double -> Double -> IO ()
cursorEnterCallback :: TQueue Event -> GLFW.Window -> GLFW.CursorState -> IO ()
scrollCallback :: TQueue Event -> GLFW.Window -> Double -> Double -> IO ()
keyCallback :: TQueue Event -> GLFW.Window -> GLFW.Key -> Int -> GLFW.KeyState -> GLFW.ModifierKeys -> IO ()
charCallback :: TQueue Event -> GLFW.Window -> Char -> IO ()
errorCallback tc e s = atomically $ writeTQueue tc $ EventError e s
windowPosCallback tc win x y = atomically $ writeTQueue tc $ EventWindowPos win x y
windowSizeCallback tc win w h = atomically $ writeTQueue tc $ EventWindowSize win w h
windowCloseCallback tc win = atomically $ writeTQueue tc $ EventWindowClose win
windowRefreshCallback tc win = atomically $ writeTQueue tc $ EventWindowRefresh win
windowFocusCallback tc win fa = atomically $ writeTQueue tc $ EventWindowFocus win fa
windowIconifyCallback tc win ia = atomically $ writeTQueue tc $ EventWindowIconify win ia
framebufferSizeCallback tc win w h = atomically $ writeTQueue tc $ EventFramebufferSize win w h
mouseButtonCallback tc win mb mba mk = atomically $ writeTQueue tc $ EventMouseButton win mb mba mk
cursorPosCallback tc win x y = atomically $ writeTQueue tc $ EventCursorPos win x y
cursorEnterCallback tc win ca = atomically $ writeTQueue tc $ EventCursorEnter win ca
scrollCallback tc win x y = atomically $ writeTQueue tc $ EventScroll win x y
keyCallback tc win k sc ka mk = atomically $ writeTQueue tc $ EventKey win k sc ka mk
charCallback tc win c = atomically $ writeTQueue tc $ EventChar win c
--------------------------------------------------------------------------------
runDemo :: Env -> State -> IO ()
runDemo env state = do
printInstructions
void $ evalRWST (adjustWindow >> run) env state
run :: Demo ()
run = do
win <- asks envWindow
draw
liftIO $ do
GLFW.swapBuffers win
GL.flush -- not necessary, but someone recommended it
GLFW.pollEvents
processEvents
state <- get
if stateDragging state
then do
let sodx = stateDragStartX state
sody = stateDragStartY state
sodxa = stateDragStartXAngle state
sodya = stateDragStartYAngle state
(x, y) <- liftIO $ GLFW.getCursorPos win
let myrot = (x - sodx) / 2
mxrot = (y - sody) / 2
put $ state
{ stateXAngle = sodxa + mxrot
, stateYAngle = sodya + myrot
}
else do
(kxrot, kyrot) <- liftIO $ getCursorKeyDirections win
(jxrot, jyrot) <- liftIO $ getJoystickDirections GLFW.Joystick'1
put $ state
{ stateXAngle = stateXAngle state + (2 * kxrot) + (2 * jxrot)
, stateYAngle = stateYAngle state + (2 * kyrot) + (2 * jyrot)
}
mt <- liftIO GLFW.getTime
modify $ \s -> s
{ stateGearZAngle = maybe 0 (realToFrac . (100*)) mt
}
q <- liftIO $ GLFW.windowShouldClose win
unless q run
processEvents :: Demo ()
processEvents = do
tc <- asks envEventsChan
me <- liftIO $ atomically $ tryReadTQueue tc
case me of
Just e -> do
processEvent e
processEvents
Nothing -> return ()
processEvent :: Event -> Demo ()
processEvent ev =
case ev of
(EventError e s) -> do
printEvent "error" [show e, show s]
win <- asks envWindow
liftIO $ GLFW.setWindowShouldClose win True
(EventWindowPos _ x y) ->
printEvent "window pos" [show x, show y]
(EventWindowSize _ width height) ->
printEvent "window size" [show width, show height]
(EventWindowClose _) ->
printEvent "window close" []
(EventWindowRefresh _) ->
printEvent "window refresh" []
(EventWindowFocus _ fs) ->
printEvent "window focus" [show fs]
(EventWindowIconify _ is) ->
printEvent "window iconify" [show is]
(EventFramebufferSize _ width height) -> do
printEvent "framebuffer size" [show width, show height]
modify $ \s -> s
{ stateWindowWidth = width
, stateWindowHeight = height
}
adjustWindow
(EventMouseButton _ mb mbs mk) -> do
printEvent "mouse button" [show mb, show mbs, showModifierKeys mk]
when (mb == GLFW.MouseButton'1) $ do
let pressed = mbs == GLFW.MouseButtonState'Pressed
modify $ \s -> s
{ stateMouseDown = pressed
}
unless pressed $
modify $ \s -> s
{ stateDragging = False
}
(EventCursorPos _ x y) -> do
let x' = round x :: Int
y' = round y :: Int
printEvent "cursor pos" [show x', show y']
state <- get
when (stateMouseDown state && not (stateDragging state)) $
put $ state
{ stateDragging = True
, stateDragStartX = x
, stateDragStartY = y
, stateDragStartXAngle = stateXAngle state
, stateDragStartYAngle = stateYAngle state
}
(EventCursorEnter _ cs) ->
printEvent "cursor enter" [show cs]
(EventScroll _ x y) -> do
let x' = round x :: Int
y' = round y :: Int
printEvent "scroll" [show x', show y']
env <- ask
modify $ \s -> s
{ stateZDist =
let zDist' = stateZDist s + realToFrac (negate $ y / 2)
in curb (envZDistClosest env) (envZDistFarthest env) zDist'
}
adjustWindow
(EventKey win k scancode ks mk) -> do
printEvent "key" [show k, show scancode, show ks, showModifierKeys mk]
when (ks == GLFW.KeyState'Pressed) $ do
-- Q, Esc: exit
when (k == GLFW.Key'Q || k == GLFW.Key'Escape) $
liftIO $ GLFW.setWindowShouldClose win True
-- ?: print instructions
when (k == GLFW.Key'Slash && GLFW.modifierKeysShift mk) $
liftIO printInstructions
-- i: print GLFW information
when (k == GLFW.Key'I) $
liftIO $ printInformation win
(EventChar _ c) ->
printEvent "char" [show c]
adjustWindow :: Demo ()
adjustWindow = do
state <- get
let width = stateWindowWidth state
height = stateWindowHeight state
zDist = stateZDist state
let pos = GL.Position 0 0
size = GL.Size (fromIntegral width) (fromIntegral height)
h = fromIntegral height / fromIntegral width :: Double
znear = 1 :: Double
zfar = 40 :: Double
xmax = znear * 0.5 :: Double
liftIO $ do
GL.viewport GL.$= (pos, size)
GL.matrixMode GL.$= GL.Projection
GL.loadIdentity
GL.frustum (realToFrac $ -xmax)
(realToFrac xmax)
(realToFrac $ -xmax * realToFrac h)
(realToFrac $ xmax * realToFrac h)
(realToFrac znear)
(realToFrac zfar)
GL.matrixMode GL.$= GL.Modelview 0
GL.loadIdentity
GL.translate (GL.Vector3 0 0 (negate $ realToFrac zDist) :: GL.Vector3 GL.GLfloat)
draw :: Demo ()
draw = do
env <- ask
state <- get
let gear1 = envGear1 env
gear2 = envGear2 env
gear3 = envGear3 env
xa = stateXAngle state
ya = stateYAngle state
za = stateZAngle state
ga = stateGearZAngle state
liftIO $ do
GL.clear [GL.ColorBuffer, GL.DepthBuffer]
GL.preservingMatrix $ do
GL.rotate (realToFrac xa) xunit
GL.rotate (realToFrac ya) yunit
GL.rotate (realToFrac za) zunit
GL.preservingMatrix $ do
GL.translate gear1vec
GL.rotate (realToFrac ga) zunit
GL.callList gear1
GL.preservingMatrix $ do
GL.translate gear2vec
GL.rotate (-2 * realToFrac ga - 9) zunit
GL.callList gear2
GL.preservingMatrix $ do
GL.translate gear3vec
GL.rotate (-2 * realToFrac ga - 25) zunit
GL.callList gear3
where
gear1vec = GL.Vector3 (-3) (-2) 0 :: GL.Vector3 GL.GLfloat
gear2vec = GL.Vector3 3.1 (-2) 0 :: GL.Vector3 GL.GLfloat
gear3vec = GL.Vector3 (-3.1) 4.2 0 :: GL.Vector3 GL.GLfloat
xunit = GL.Vector3 1 0 0 :: GL.Vector3 GL.GLfloat
yunit = GL.Vector3 0 1 0 :: GL.Vector3 GL.GLfloat
zunit = GL.Vector3 0 0 1 :: GL.Vector3 GL.GLfloat
getCursorKeyDirections :: GLFW.Window -> IO (Double, Double)
getCursorKeyDirections win = do
x0 <- isPress `fmap` GLFW.getKey win GLFW.Key'Up
x1 <- isPress `fmap` GLFW.getKey win GLFW.Key'Down
y0 <- isPress `fmap` GLFW.getKey win GLFW.Key'Left
y1 <- isPress `fmap` GLFW.getKey win GLFW.Key'Right
let x0n = if x0 then (-1) else 0
x1n = if x1 then 1 else 0
y0n = if y0 then (-1) else 0
y1n = if y1 then 1 else 0
return (x0n + x1n, y0n + y1n)
getJoystickDirections :: GLFW.Joystick -> IO (Double, Double)
getJoystickDirections js = do
maxes <- GLFW.getJoystickAxes js
return $ case maxes of
(Just (x:y:_)) -> (-y, x)
_ -> ( 0, 0)
isPress :: GLFW.KeyState -> Bool
isPress GLFW.KeyState'Pressed = True
isPress GLFW.KeyState'Repeating = True
isPress _ = False
--------------------------------------------------------------------------------
printInstructions :: IO ()
printInstructions =
putStrLn $ render $
nest 4 (
text "------------------------------------------------------------" $+$
text "'?': Print these instructions" $+$
text "'i': Print GLFW information" $+$
text "" $+$
text "* Mouse cursor, keyboard cursor keys, and/or joystick" $+$
text " control rotation." $+$
text "* Mouse scroll wheel controls distance from scene." $+$
text "------------------------------------------------------------"
)
printInformation :: GLFW.Window -> IO ()
printInformation win = do
version <- GLFW.getVersion
versionString <- GLFW.getVersionString
monitorInfos <- runMaybeT getMonitorInfos
joystickNames <- getJoystickNames
clientAPI <- GLFW.getWindowClientAPI win
cv0 <- GLFW.getWindowContextVersionMajor win
cv1 <- GLFW.getWindowContextVersionMinor win
cv2 <- GLFW.getWindowContextVersionRevision win
robustness <- GLFW.getWindowContextRobustness win
forwardCompat <- GLFW.getWindowOpenGLForwardCompat win
debug <- GLFW.getWindowOpenGLDebugContext win
profile <- GLFW.getWindowOpenGLProfile win
putStrLn $ render $
nest 4 (
text "------------------------------------------------------------" $+$
text "GLFW C library:" $+$
nest 4 (
text "Version:" <+> renderVersion version $+$
text "Version string:" <+> renderVersionString versionString
) $+$
text "Monitors:" $+$
nest 4 (
renderMonitorInfos monitorInfos
) $+$
text "Joysticks:" $+$
nest 4 (
renderJoystickNames joystickNames
) $+$
text "OpenGL context:" $+$
nest 4 (
text "Client API:" <+> renderClientAPI clientAPI $+$
text "Version:" <+> renderContextVersion cv0 cv1 cv2 $+$
text "Robustness:" <+> renderContextRobustness robustness $+$
text "Forward compatibility:" <+> renderForwardCompat forwardCompat $+$
text "Debug:" <+> renderDebug debug $+$
text "Profile:" <+> renderProfile profile
) $+$
text "------------------------------------------------------------"
)
where
renderVersion (GLFW.Version v0 v1 v2) =
text $ intercalate "." $ map show [v0, v1, v2]
renderVersionString =
text . show
renderMonitorInfos =
maybe (text "(error)") (vcat . map renderMonitorInfo)
renderMonitorInfo (name, (x,y), (w,h), vms) =
text (show name) $+$
nest 4 (
location <+> size $+$
fsep (map renderVideoMode vms)
)
where
location = int x <> text "," <> int y
size = int w <> text "x" <> int h <> text "mm"
renderVideoMode (GLFW.VideoMode w h r g b rr) =
brackets $ res <+> rgb <+> hz
where
res = int w <> text "x" <> int h
rgb = int r <> text "x" <> int g <> text "x" <> int b
hz = int rr <> text "Hz"
renderJoystickNames pairs =
vcat $ map (\(js, name) -> text (show js) <+> text (show name)) pairs
renderContextVersion v0 v1 v2 =
hcat [int v0, text ".", int v1, text ".", int v2]
renderClientAPI = text . show
renderContextRobustness = text . show
renderForwardCompat = text . show
renderDebug = text . show
renderProfile = text . show
type MonitorInfo = (String, (Int,Int), (Int,Int), [GLFW.VideoMode])
getMonitorInfos :: MaybeT IO [MonitorInfo]
getMonitorInfos =
getMonitors >>= mapM getMonitorInfo
where
getMonitors :: MaybeT IO [GLFW.Monitor]
getMonitors = MaybeT GLFW.getMonitors
getMonitorInfo :: GLFW.Monitor -> MaybeT IO MonitorInfo
getMonitorInfo mon = do
name <- getMonitorName mon
vms <- getVideoModes mon
MaybeT $ do
pos <- liftIO $ GLFW.getMonitorPos mon
size <- liftIO $ GLFW.getMonitorPhysicalSize mon
return $ Just (name, pos, size, vms)
getMonitorName :: GLFW.Monitor -> MaybeT IO String
getMonitorName mon = MaybeT $ GLFW.getMonitorName mon
getVideoModes :: GLFW.Monitor -> MaybeT IO [GLFW.VideoMode]
getVideoModes mon = MaybeT $ GLFW.getVideoModes mon
getJoystickNames :: IO [(GLFW.Joystick, String)]
getJoystickNames =
catMaybes `fmap` mapM getJoystick joysticks
where
getJoystick js =
fmap (maybe Nothing (\name -> Just (js, name)))
(GLFW.getJoystickName js)
--------------------------------------------------------------------------------
printEvent :: String -> [String] -> Demo ()
printEvent cbname fields =
liftIO $ putStrLn $ cbname ++ ": " ++ unwords fields
showModifierKeys :: GLFW.ModifierKeys -> String
showModifierKeys mk =
"[mod keys: " ++ keys ++ "]"
where
keys = if null xs then "none" else unwords xs
xs = catMaybes ys
ys = [ if GLFW.modifierKeysShift mk then Just "shift" else Nothing
, if GLFW.modifierKeysControl mk then Just "control" else Nothing
, if GLFW.modifierKeysAlt mk then Just "alt" else Nothing
, if GLFW.modifierKeysSuper mk then Just "super" else Nothing
]
curb :: Ord a => a -> a -> a -> a
curb l h x
| x < l = l
| x > h = h
| otherwise = x
--------------------------------------------------------------------------------
joysticks :: [GLFW.Joystick]
joysticks =
[ GLFW.Joystick'1
, GLFW.Joystick'2
, GLFW.Joystick'3
, GLFW.Joystick'4
, GLFW.Joystick'5
, GLFW.Joystick'6
, GLFW.Joystick'7
, GLFW.Joystick'8
, GLFW.Joystick'9
, GLFW.Joystick'10
, GLFW.Joystick'11
, GLFW.Joystick'12
, GLFW.Joystick'13
, GLFW.Joystick'14
, GLFW.Joystick'15
, GLFW.Joystick'16
]