%antialias
{ /v /u /face 0.8 0.8 0.8 point
  0.6 0.6 100.0 } cube
-0.5 -0.5 -0.5 translate
0.0 0.5 0.0 scale            /white_side

{ /v /u /face 0.2 0.2 0.2 point
  0.6 0.6 100.0 } cube
-0.5 -0.5 -0.5 translate
0.0 0.5 0.0 scale            /black_side

{ /v /u /face 0.7 0.5 0.3 point
  0.6 0.0 2.0 } cube
8.0 0.5 0.5 scale            /board_edge




white_side black_side 0.0 0.0 1.0 translate union /board_segment
board_segment
board_segment 0.0 0.0 2.0 translate union /lower_board_column
board_segment 0.0 0.0 4.0 translate 
board_segment 0.0 0.0 6.0 translate union /upper_board_column

lower_board_column upper_board_column union /board_column

upper_board_column
board_column -2.0 0.0 0.0 translate union
board_column -4.0 0.0 0.0 translate union
upper_board_column 2.0 0.0 0.0 translate union

lower_board_column -1.0 0.0 0.0 translate
              180.0 rotatex
              0.0 0.0 7.0 translate union
board_column -3.0 0.0 0.0 translate
              180.0 rotatex
              0.0 0.0 7.0 translate union
lower_board_column  1.0 0.0 0.0 translate
              180.0 rotatex
              0.0 0.0 7.0 translate union
lower_board_column  3.0 0.0 0.0 translate
              180.0 rotatex
              0.0 0.0 7.0 translate union
board_segment 180.0 rotatex
              1.0 0.0 3.0 translate union
board_segment -35.0 rotatex
              0.0 -0.75 2.0 translate union
board_segment 180.0 rotatex
              45.0 rotatey
              30.0 rotatez
              -1.0 -2.0 3.0 translate union
black_side    -1.0 0.0 0.0 translate union
white_side    3.0 0.0 3.0 translate union
board_segment -40.0 rotatey
              75.0 rotatez
              3.5 -3.4 0.5 translate union

board_edge   -4.5 -0.2 -1.0 translate
              75.0 rotatez union
board_edge   -4.5 -0.2 7.5 translate union
board_edge    1.125 0.0 0.0 scale
              90.0 rotatey
             -5.0 -0.2 8.0 translate union
board_edge    1.125 0.0 0.0 scale
              125.0 rotatey
              35.0 rotatex
              3.5 -0.2 8.0 translate union

/board

board
-55.0 rotatex
0.75 -1.5 5.5 translate /scene

1.0 1.0 1.0 point
1.0 1.0 1.0 point pointlight /l1

0.4 0.4 0.4 point % ambient light
[ l1 ]            % light source array
scene             % scene to render
3                 % tracing depth
90.0              % field of view
1024 768           % image width and height
"board.ppm"     % output file
render