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module SimpleGraphics where
import Graphics.SOE
main0 = runGraphics $
do w <- openWindow "My First Graphics Program" (300,300)
drawInWindow w (text (100,200) "HelloGraphicsWolrd")
spaceClose w
spaceClose :: Window -> IO ()
spaceClose w = do k <- getKey w
if k == ' ' then closeWindow w
else spaceClose w
getLine :: IO String
getLine = do c <- getChar
if c == '\n' then return ""
else do v <- SimpleGraphics.getLine
return (c:v)
putStr :: String -> IO ()
putStr [] = return ()
putStr (x:xs) = do putChar x
SimpleGraphics.putStr xs
pic1 = withColor Red
(ellipse (150, 150) (300, 200))
pic2 = withColor Blue
(polyline [(100, 50), (200, 50),
(200, 250), (100, 250), (100, 50)])
main2 = runGraphics $
do w <- openWindow "Some Graphics Figures" (300, 300)
drawInWindow w pic1
drawInWindow w pic2
spaceClose w
fillTri :: Window -> Int -> Int -> Int -> IO ()
fillTri w x y size =
drawInWindow w (withColor Blue
(polygon [(x,y), (x + size, y), (x, y - size), (x, y)]))
minSize :: Int
minSize = 8
sierpinskiTri :: Window -> Int -> Int -> Int -> IO ()
sierpinskiTri w x y size =
if size <= minSize
then fillTri w x y size
else let size2 = size `div` 2
in do sierpinskiTri w x y size2
sierpinskiTri w x (y-size2) size2
sierpinskiTri w (x+size2) y size2
main3 = runGraphics $
do w <- openWindow "Sierpinski's Triangle" (400, 400)
sierpinskiTri w 50 300 256
spaceClose w
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