##############################################################################
##                                                                          ##
## This scene defines a modified Cornell Box, where both walls use the      ##
##      Ashikhmin-Shirley BRDF instead of a standard Lambertian BRDF.       ##
##                                                                          ##
## Because I put this example together quickly, the BRDF assumes that the   ##
##      "u" vector is (0,0,1) and the "v" vector is (0,1,0).  If your code  ##
##      uses different vectors, you may have to change the BRDF's n_u and   ##
##      n_v coefficients.                                                   ##
##                                                                          ##
## Chris Wyman (3/30/2007)                                                  ##
##############################################################################

epsilon 0.001

# Setup a camera to view the scene
camera pinhole
        eye 278 273 -800
   	up 0 1 0
        at 278 273 -799
	fovy 38.5
	res 512 512
end

light area
	primitive parallelogram
		pt0    213.0 548.7 227.0
		edge1  130.0 0.0 0.0
		edge2  0.0 0.0 105.0
		material simpleEmitter
			color 18.4 15.6 8.0
		end
	end
	# The following two lines describe (for my code) how to
        #     handle this light in ray-tracing mode (where I use
	#     only point light sources).
	pos    278 548.7 279.5
	color  18.4 15.6 8.0	
end


# Defines a Lambertian White BRDF material for the floor, ceiling and
#   the blocks in the Cornell Box.  Note the 'explicit' means I used 
#   explicit direct lighting (though you need not).
material brdf white
	lambertian
		color 0.76 0.75 0.5
	end
	explicit
end

# Defines a red BRDF using the Ashikhmin-Shirley model.  I also used
#   explicit direct lighting for this material.
material brdf red
	ashikhmin
		Rd 0.2 0.0 0.0
		Rs 0.8 0.2 0.2
		nu 10
		nv 1000	
	end
	explicit
end

# Defines a green BRDF using the Ashikhmin-Shirley model.  I also used
#   explicit direct lighting for this material.
material brdf green
	ashikhmin
		Rd 0.0 0.2 0.0
		Rs 0.1 0.5 0.1
		nu 10
		nv 1000	
	end
	explicit
end
     
# The floor (2 triangles)
object tri floor1
	v0 556 0 0
	v1 0 0 0
	v2 0 0 559.2
	material white
end
object tri floor2
	v0 556 0 0
	v1 0 0 559.2
	v2 556 0 559.2
	material white
end

# The ceiling (2 triangles)
object tri ceiling1
	v0 556 548.8 0
	v1 556 548.8 559.2
	v2 0 548.8 559.2
	material white
end
object tri ceiling2
	v0 556 548.8 0
	v1 0 548.8 559.2
	v2 0 548.8 0
	material white
end

# The back wall (2 triangles)
object tri backWall1
	v0 556 0 559.2
    	v1 0 0 559.2
    	v2 0 548.8 559.2
	material white
end
object tri backWall2
	v0 556 0 559.2
    	v1 0 548.8 559.2
	v2 556 548.8 559.2
	material white
end

# The left wall (2 triangles)
object tri leftWall1
	v0 556 0 0
    	v1 556 0 559.2
    	v2 556 548.8 559.2
	material red
end
object tri leftWall2
	v0 556 0 0
    	v1 556 548.8 559.2
	v2 556 548.8 0
	material red
end

# The right wall (2 triangles)
object tri rightWall1
 	v0 0 0 559.2
    	v1 0 0 0
    	v2 0 548.8 0
	material green
end
object tri rightWall2
	v0 0 0 559.2
    	v1 0 548.8 0
	v2 0 548.8 559.2
	material green
end


# The small block (10 triangles)
object tri smallBlock1
	v0 130 165 65
    	v1 82 165 225
    	v2 240 165 272
	material white
end
object tri smallBlock2
	v0 130 165 65
    	v1 240 165 272
	v2 290 165 114
	material white
end
object tri smallBlock3
	v0 290 0 114
    	v1 290 165 114
    	v2 240 165 272
	material white
end
object tri smallBlock4
	v0 290 0 114
    	v1 240 165 272
	v2 240 0 272
	material white
end
object tri smallBlock5
	v0 130 0 65
    	v1 130 165 65
    	v2 290 165 114
	material white
end
object tri smallBlock6
	v0 130 0 65
    	v1 290 165 114
	v2 290 0 114
	material white
end
object tri smallBlock7
	v0 82 0 225
    	v1 82 165 225
    	v2 130 165 65
	material white
end
object tri smallBlock8
	v0 82 0 225
    	v1 130 165 65
	v2 130 0 65
	material white
end
object tri smallBlock9
 	v0 240 0 272
    	v1 240 165 272
    	v2 82 165 225
	material white
end
object tri smallBlock10
	v0 240 0 272
    	v1 82 165 225
	v2 82 0 225
	material white
end


# The large block (10 triangles)
object tri largeBlock1
	v0 423 330 247
    	v1 265 330 296
    	v2 314 330 456
	material white
end
object tri largeBlock2
	v0 423 330 247
    	v1 314 330 456
	v2 472 330 406
	material white
end
object tri largeBlock3
	v0 423 0 247
    	v1 423 330 247
    	v2 472 330 406
	material white
end
object tri largeBlock4
	v0 423 0 247
    	v1 472 330 406
	v2 472 0 406
	material white
end
object tri largeBlock5
	v0 472 0 406
    	v1 472 330 406
    	v2 314 330 456
	material white
end
object tri largeBlock6
	v0 472 0 406
    	v1 314 330 456
	v2 314 0 456
	material white
end
object tri largeBlock7
	v0 314 0 456
    	v1 314 330 456
    	v2 265 330 296
	material white
end
object tri largeBlock8
	v0 314 0 456
    	v1 265 330 296
	v2 265 0 296
	material white
end
object tri largeBlock9
 	v0 265 0 296
    	v1 265 330 296
    	v2 423 330 247
	material white
end
object tri largeBlock10
	v0 265 0 296
    	v1 423 330 247
	v2 423 0 247
	material white
end