/usr/share/doc/libghc-glut-doc/examples/RedBook/Teapots.hs is in libghc-glut-doc 2.1.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Teapots.hs (adapted from teapots.c which is (c) Silicon Graphics, Inc.)
Copyright (c) Sven Panne 2002-2005 <sven.panne@aedion.de>
This file is part of HOpenGL and distributed under a BSD-style license
See the file libraries/GLUT/LICENSE
This program demonstrates lots of material properties. A single light
source illuminates the objects.
-}
import System.Exit ( exitWith, ExitCode(ExitSuccess) )
import Graphics.UI.GLUT
-- Initialize depth buffer, projection matrix, light source, and lighting
-- model. Do not specify a material property here.
myInit :: IO DisplayList
myInit = do
ambient (Light 0) $= Color4 0 0 0 1
diffuse (Light 0) $= Color4 1 1 1 1
position (Light 0) $= Vertex4 0 3 3 0
lightModelAmbient $= Color4 0.2 0.2 0.2 1
lightModelLocalViewer $= Disabled
frontFace $= CW
lighting $= Enabled
light (Light 0) $= Enabled
autoNormal $= Enabled
normalize $= Enabled
depthFunc $= Just Less
-- be efficient--make teapot display list
defineNewList Compile $
renderObject Solid (Teapot 1)
-- Move object into position, specify the material properties, draw a teapot.
renderTeapot :: DisplayList -> Vector3 GLfloat -> Color4 GLfloat
-> Color4 GLfloat -> Color4 GLfloat -> GLfloat -> IO ()
renderTeapot teapotList pos amb dif spec shine = do
preservingMatrix $ do
translate pos
materialAmbient Front $= amb
materialDiffuse Front $= dif
materialSpecular Front $= spec
materialShininess Front $= shine * 128
callList teapotList
-- 1st column: emerald, jade, obsidian, pearl, ruby, turquoise
-- 2nd column: brass, bronze, chrome, copper, gold, silver
-- 3rd column: black, cyan, green, red, white, yellow plastic
-- 4th column: black, cyan, green, red, white, yellow rubber
display :: DisplayList -> DisplayCallback
display teapotList = do
clear [ ColorBuffer, DepthBuffer ]
renderTeapot teapotList
(Vector3 2 17 0)
(Color4 0.0215 0.1745 0.0215 1)
(Color4 0.07568 0.61424 0.07568 1)
(Color4 0.633 0.727811 0.633 1)
0.6
renderTeapot teapotList
(Vector3 2 14 0)
(Color4 0.135 0.2225 0.1575 1)
(Color4 0.54 0.89 0.63 1)
(Color4 0.316228 0.316228 0.316228 1)
0.1
renderTeapot teapotList
(Vector3 2 11 0)
(Color4 0.05375 0.05 0.06625 1)
(Color4 0.18275 0.17 0.22525 1)
(Color4 0.332741 0.328634 0.346435 1)
0.3
renderTeapot teapotList
(Vector3 2 8 0)
(Color4 0.25 0.20725 0.20725 1)
(Color4 1 0.829 0.829 1)
(Color4 0.296648 0.296648 0.296648 1)
0.088
renderTeapot teapotList
(Vector3 2 5 0)
(Color4 0.1745 0.01175 0.01175 1)
(Color4 0.61424 0.04136 0.04136 1)
(Color4 0.727811 0.626959 0.626959 1)
0.6
renderTeapot teapotList
(Vector3 2 2 0)
(Color4 0.1 0.18725 0.1745 1)
(Color4 0.396 0.74151 0.69102 1)
(Color4 0.297254 0.30829 0.306678 1)
0.1
renderTeapot teapotList
(Vector3 6 17 0)
(Color4 0.329412 0.223529 0.027451 1)
(Color4 0.780392 0.568627 0.113725 1)
(Color4 0.992157 0.941176 0.807843 1)
0.21794872
renderTeapot teapotList
(Vector3 6 14 0)
(Color4 0.2125 0.1275 0.054 1)
(Color4 0.714 0.4284 0.18144 1)
(Color4 0.393548 0.271906 0.166721 1)
0.2
renderTeapot teapotList
(Vector3 6 11 0)
(Color4 0.25 0.25 0.25 1)
(Color4 0.4 0.4 0.4 1)
(Color4 0.774597 0.774597 0.774597 1)
0.6
renderTeapot teapotList
(Vector3 6 8 0)
(Color4 0.19125 0.0735 0.0225 1)
(Color4 0.7038 0.27048 0.0828 1)
(Color4 0.256777 0.137622 0.086014 1)
0.1
renderTeapot teapotList
(Vector3 6 5 0)
(Color4 0.24725 0.1995 0.0745 1)
(Color4 0.75164 0.60648 0.22648 1)
(Color4 0.628281 0.555802 0.366065 1)
0.4
renderTeapot teapotList
(Vector3 6 2 0)
(Color4 0.19225 0.19225 0.19225 1)
(Color4 0.50754 0.50754 0.50754 1)
(Color4 0.508273 0.508273 0.508273 1)
0.4
renderTeapot teapotList
(Vector3 10 17 0)
(Color4 0 0 0 1)
(Color4 0.01 0.01 0.01 1)
(Color4 0.50 0.50 0.50 1)
0.25
renderTeapot teapotList
(Vector3 10 14 0)
(Color4 0 0.1 0.06 1)
(Color4 0 0.50980392 0.50980392 1)
(Color4 0.50196078 0.50196078 0.50196078 1)
0.25
renderTeapot teapotList
(Vector3 10 11 0)
(Color4 0 0 0 1)
(Color4 0.1 0.35 0.1 1)
(Color4 0.45 0.55 0.45 1)
0.25
renderTeapot teapotList
(Vector3 10 8 0)
(Color4 0 0 0 1)
(Color4 0.5 0 0 1)
(Color4 0.7 0.6 0.6 1)
0.25
renderTeapot teapotList
(Vector3 10 5 0)
(Color4 0 0 0 1)
(Color4 0.55 0.55 0.55 1)
(Color4 0.70 0.70 0.70 1)
0.25
renderTeapot teapotList
(Vector3 10 2 0)
(Color4 0 0 0 1)
(Color4 0.5 0.5 0 1)
(Color4 0.60 0.60 0.50 1)
0.25
renderTeapot teapotList
(Vector3 14 17 0)
(Color4 0.02 0.02 0.02 1)
(Color4 0.01 0.01 0.01 1)
(Color4 0.4 0.4 0.4 1)
0.078125
renderTeapot teapotList
(Vector3 14 14 0)
(Color4 0 0.05 0.05 1)
(Color4 0.4 0.5 0.5 1)
(Color4 0.04 0.7 0.7 1)
0.078125
renderTeapot teapotList
(Vector3 14 11 0)
(Color4 0 0.05 0 1)
(Color4 0.4 0.5 0.4 1)
(Color4 0.04 0.7 0.04 1)
0.078125
renderTeapot teapotList
(Vector3 14 8 0)
(Color4 0.05 0 0 1)
(Color4 0.5 0.4 0.4 1)
(Color4 0.7 0.04 0.04 1)
0.078125
renderTeapot teapotList
(Vector3 14 5 0)
(Color4 0.05 0.05 0.05 1)
(Color4 0.5 0.5 0.5 1)
(Color4 0.7 0.7 0.7 1)
0.078125
renderTeapot teapotList
(Vector3 14 2 0)
(Color4 0.05 0.05 0 1)
(Color4 0.5 0.5 0.4 1)
(Color4 0.7 0.7 0.04 1)
0.078125
flush
reshape :: ReshapeCallback
reshape size@(Size w h) = do
viewport $= (Position 0 0, size)
matrixMode $= Projection
loadIdentity
let wf = fromIntegral w
hf = fromIntegral h
if w <= h
then ortho 0 16 0 (16 * hf/wf) (-10) 10
else ortho 0 (16 * wf/hf) 0 16 (-10) 10
matrixMode $= Modelview 0
keyboard :: KeyboardMouseCallback
keyboard (Char '\27') Down _ _ = exitWith ExitSuccess
keyboard _ _ _ _ = return ()
main :: IO ()
main = do
(progName, _args) <- getArgsAndInitialize
initialDisplayMode $= [ SingleBuffered, RGBMode, WithDepthBuffer ]
initialWindowSize $= Size 500 600
initialWindowPosition $= Position 50 50
createWindow progName
teapotList <- myInit
reshapeCallback $= Just reshape
displayCallback $= display teapotList
keyboardMouseCallback $= Just keyboard
mainLoop
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