debug pixel: x = 400; y = 100
cast ray: end = 0 1 6; dir = 0.166131 -0.439026 -0.882982
intersection with obj[0] part 0; dist = 4.55554
closest intersection: obj = obj[0]; part = 0; dist = 4.55554
call Shade_Surface with: location = 0.756815 -1 1.97754; normal = 0 1 0
ambient = 0 0 0
shading for light 0: diffuse = 0.336691 0.336691 0.336691; specular = 0 0 0
final color 0.336691 0.336691 0.336691