wgd(g) = 0; wgd(scenes)(cur)(instances) = {}; wgd(scenes)(cur)(instances)(left) = { (type, polygon), (mass, infinity), (vertices, { (0, {(x, 0), (y, 0)}), (1, {(x, 0), (y, 600)}), (count, 2) }) }; wgd(scenes)(cur)(instances)(right) = { (type, polygon), (mass, infinity), (vertices, { (0, {(x, 800), (y, 0)}), (1, {(x, 800), (y, 600)}), (count, 2) }) }; wgd(scenes)(cur)(instances)(bottom) = { (type, polygon), (mass, infinity), (vertices, { (0, {(x, 0), (y, 0)}), (1, {(x, 800), (y, 0)}), (count, 2) }) }; wgd(scenes)(cur)(instances)(top) = { (type, polygon), (mass, infinity), (vertices, { (0, {(x, 0), (y, 600)}), (1, {(x, 800), (y, 600)}), (count, 2) }) };