##RenderMan RIB-Structure 1.0
version 3.03

############################################################################
#
# This RIB file describes the famous "Cornell Box", which is a test scene
# commonly used to demonstrate radiosity.
#
############################################################################

# Set up the camera position and field of view for the usual view of the
# box.  No rendering resolution is specified, but you should choose a
# 1.0 aspect ratio to get the usual view (i.e. same horizontal and vertical
# resolutions, such as 256x256 or 512x512.
#
Option "searchpath" "shader" [".:../shaders:&"]
Display "cornell.tif" "file" "rgba"
FrameAspectRatio 1
Format 400 400 1
PixelSamples 2 2
Projection "perspective" "fov" [37] 
Scale -1 1 1
Orientation "rh"
##CameraOrientation 278 273 -800 278 273 0 0 1 0
ConcatTransform [1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1]
Translate -278 -273 800 

#Declare "steps" "integer"
Option "radiosity" "steps" [100]

WorldBegin

#
# Hint to the radiosity renderer: specify a good dicing size
#
Declare "patchsize" "float"
Declare "elemsize" "float"
Declare "minsize" "float"
Attribute "radiosity" "patchsize" [200] "elemsize" [100] "minsize" [10]



############################################################################
# Light Source Definitions
############################################################################

#
# Set up a single area light source in the center of the ceiling.
#

AttributeBegin
Surface "constant" 
Attribute "light" "shadows" "on"
Attribute "light" "nsamples" [4]
Translate 278 548.8 279.5
Translate 0 -.1 0
#AreaLightSource "arealight" 1 "intensity" [150000] "lightcolor" [1 .9 .7]
AreaLightSource "arealight" 1 "intensity" [250000] "lightcolor" [1 .9 .7]
Patch "bilinear" "P" [65 0 -52.5 65 0 52.5 -65 0 -52.5 -65 0 52.5]
#Polygon "P" [343.0 548.8 227.0 
# 343.0 548.8 332.0
# 213.0 548.8 332.0
# 213.0 548.8 227.0]
AttributeEnd
Illuminate 1 1


############################################################################
# Wall Definitions
############################################################################

AttributeBegin
Attribute "identifier" "name" "Cornell Box Walls"

# All surfaces are 1 sided (so we can see through the closest wall)
#Sides 1
Attribute "render" "casts_shadows" "none"

# All surfaces are diffuse reflectors
Surface "matte" "Kd" [0.75]
Color [ 1 1 1 ] 


Attribute "identifier" "name" "floor"
Polygon "P" [550 0 0 0 0 0 0 0 560 550 0 560]

Attribute "identifier" "name" "ceiling"
Polygon "P" [560 550 0 560 550 560 0 550 560 0 550 0.0]

Attribute "identifier" "name" "back_wall"
Polygon "P" [550 0 560 0 0 560 0 550 560 560 550 560]

Attribute "identifier" "name" "right_wall"
Color [0.15 0.5 0.15]
Polygon "P" [0.0 0 560 0 0 0 0.0 550 0 0.0 550 560]

Attribute "identifier" "name" "left_wall"
Color [0.64 0.15 0.1]
Polygon "P" [550 0 0 550 0 560 560 550 560 560 550 0.0]


AttributeEnd



############################################################################
# Short Box Definition
############################################################################
AttributeBegin
Attribute "identifier" "name" "Cornell Box -- short box"
Surface "matte" "Kd" [0.75]
Color [ 1 1 1 ] 
Polygon "P" [130.0 165.0 65.0 82.0 165.0 225.0 240.0 165.0 272.0 290.0 165.0 114.0]
Polygon "P" [290.0 0 114.0 290.0 165.0 114.0 240.0 165.0 272.0 240.0 0 272.0]
Polygon "P" [130.0 0 65.0 130.0 165.0 65.0 290.0 165.0 114.0 290.0 0 114.0]
Polygon "P" [ 82.0 0 225.0 82.0 165.0 225.0 130.0 165.0 65.0 130.0 0 65.0]
Polygon "P" [240.0 0 272.0 240.0 165.0 272.0 82.0 165.0 225.0 82.0 0 225.0]
AttributeEnd


############################################################################
# Tall Box Definition
############################################################################
AttributeBegin
Attribute "identifier" "name" "Cornell Box -- tall box"
Surface "matte" "Kd" [0.75]
Color [ 1 1 1 ] 
Polygon "P" [423.0 330.0 247.0 265.0 330.0 296.0 314.0 330.0 456.0 472.0 330.0 406.0]
Polygon "P" [423.0 0 247.0 423.0 330.0 247.0 472.0 330.0 406.0 472.0 0 406.0]
Polygon "P" [472.0 0 406.0 472.0 330.0 406.0 314.0 330.0 456.0 314.0 0 456.0]
Polygon "P" [314.0 0 456.0 314.0 330.0 456.0 265.0 330.0 296.0 265.0 0 296.0]
Polygon "P" [265.0 0 296.0 265.0 330.0 296.0 423.0 330.0 247.0 423.0 0 247.0]
AttributeEnd
WorldEnd